MEDICAL DEVICE INCLUDING A TUBE

Abstract

The tube has a first lumen with a proximal end and an open distal end to be placed inside a body cavity. An outer wall encloses the first lumen and a camera lumen. A camera module (10) is arranged in the camera lumen at a distal end thereof so that the camera module is positioned adjacent the distal end of the first lumen. An image transmission cable (13) attached to the camera module extends through the camera lumen to connect to an image display device. The camera module is fixed in the camera lumen by means of a camera housing (14) including a tubular housing part (17) surrounding the camera module and a distal end wall (18). The tubular housing part and the distal end wall are integrally moulded and form one single housing element (19). The tubular housing part fits tightly into the camera lumen of the tube.

Claims

1-40. (canceled)

41. A medical device including: a tube having an outer wall, a first lumen and a camera lumen, the first lumen having a proximal end and a distal end, the camera lumen having a proximal end and a distal end, and the outer wall enclosing the first lumen and the camera lumen; a camera housing including a proximal portion and a singular housing element affixed to the proximal portion, the singular housing element comprising a tubular housing part integrally moulded in one-piece with a distal end wall, the tubular housing part sized to fit tightly into the camera lumen of the tube, the tubular housing part having an inner face, a proximal end and a distal end; a support structure positioned in the camera housing and comprising a proximal end, a distal end, and a tubular end part at the proximal end of the support structure, the tubular end part having an outer face forming a gap with the inner face of the tubular housing part; an adhesive in the gap affixing the support structure to the singular housing element; and a camera module supported by the support structure inside the camera housing, the camera module including an image sensor and a light source positioned at the distal end of the camera lumen adjacent the distal end of the first lumen.

42. The medical device of claim 41, wherein the outer face of the tubular end part of the support structure and/or the inner face of the tubular housing part of the camera housing are/is tapered or conical so that the gap has a cross-section that decreases in the direction from the proximal end to the distal end of the support structure.

43. The medical device of claim 41, wherein the outer face of the tubular end part of the support structure and/or the inner face of the tubular housing part of the camera housing are/is provided with ribs.

44. The medical device of claim 43, wherein the ribs only extend at a distal end of the tubular end part of the support structure.

45. The medical device of claim 43, wherein the ribs include two pivot forming ribs arranged diametrically opposite of the tubular end part of the support structure and/or of the tubular part of the camera housing and together providing a relatively tight fit with the corresponding outer face or inner face, wherein the ribs further include two distance ribs distributed peripherally about the tubular end part of the support structure and/or of the tubular part of the camera housing and together providing a relatively loose fit with the corresponding outer face or inner face, and wherein the two pivot forming ribs extending further radially than the distance ribs.

46. The medical device of claim 43, wherein the ribs include two pivot forming ribs arranged diametrically opposite of the tubular end part of the support structure and/or of the tubular part of the camera housing and together providing a relatively tight fit with the corresponding outer face or inner face, wherein the ribs further include two distance ribs distributed peripherally about the tubular end part of the support structure and/or of the tubular part of the camera housing and together providing a relatively loose fit with the corresponding outer face or inner face.

47. The medical device of claim 46, wherein the distal end of the support structure is provided with two spaced tabs arranged generally symmetrically about a plane extending through the two pivot forming ribs, and wherein the two spaced tabs are adapted to abut the camera module.

48. The medical device of claim 47, wherein the support structure includes an elongated part having generally semi-circular cross-section, and wherein the elongated part connects the proximal end of the support structure with the two spaced tabs.

49. The medical device of claim 48, wherein the elongated part is provided with a peripherally extending recess facing the inner face of the tubular part of the camera housing next to the tubular end part of the support structure.

50. The medical device of claim 48, wherein the inner face of the tubular part of the camera housing is provided with a guide rib, wherein the elongated part is provided with the groove extending in the longitudinal direction of the camera housing, wherein the groove is arranged symmetrically about the plane extending through the two pivot forming ribs.

51. The medical device of claim 41, further comprising an image transmission cable having an outer face, wherein the inner face of the tubular end part of the support structure is adhesively bonded to the outer face of the image transmission cable.

52. The medical device of claim 41, wherein the support structure or the inner face of the tubular part of the camera housing has a guide rib extending in a longitudinal direction of the camera housing, wherein the corresponding support structure or inner face of the tubular part of the camera housing has a groove extending in the longitudinal direction of the camera housing, and wherein the guide rib is adapted to slide in the groove.

53. The medical device of claim 52, wherein the inner face of the tubular part of the camera housing is provided with the guide rib, and wherein the guide rib is wedge-formed at the distal end of the camera housing to guide the camera module during assembly.

54. The medical device of claim 41, further comprising guide tabs provided on the inner face of the tubular part and/or on the distal end wall, and wherein the guide tabs are arranged to guide the camera module during its insertion into the camera housing.

55. The medical device of claim 41, wherein the proximal portion of the camera housing comprises a proximal end, a distal end and a tapering part between the proximal end and the distal end, and wherein an outer diameter of the proximal end is smaller than an outer diameter of the distal end.

56. The medical device of claim 41, wherein the outer wall comprises an inner surface and an outer surface, wherein the camera lumen is formed in the outer wall between the inner surface and the outer surface of the outer wall.

57. A visualization system comprising a medical device according to claim 41 and a monitor or image display device, the medical device further comprising an image transmission cable, the monitor or image display device connected to the image transmission cable directly or via a wireless connection.

58. The visualization system of claim 57, wherein the outer wall further comprises an inner surface and an outer surface, the camera lumen formed in the outer wall between the inner surface and the outer surface.

59. The visualization system of claim 58, wherein the tube comprises a second lumen and a partition wall separating the first lumen and the second lumen, and wherein the camera lumen is formed an intersection of the outer wall and the partition wall.

60. The visualization system of claim 59, wherein the camera assembly includes a lens barrel having a central axis, and wherein the central axis is closer to the first lumen than to the second lumen.

61. A medical device including: a tube having an outer wall, a first lumen and a camera lumen, the first lumen having a proximal end and a distal end, the camera lumen having a proximal end and a distal end, and the outer wall enclosing the first lumen and the camera lumen; a camera housing including a proximal portion and a singular housing element affixed to the proximal portion, the singular housing element comprising a tubular housing part integrally moulded in one-piece with a distal end wall, the tubular housing part sized to fit tightly into the camera lumen of the tube, the tubular housing part having an inner face, a proximal end and a distal end; a support structure positioned in the camera housing and comprising a proximal end, a distal end, and a tubular end part at the proximal end of the support structure, the tubular end part having an outer face forming a gap with the inner face of the tubular housing part; an adhesive in the gap affixing the support structure to the singular housing element; and a camera module supported by the support structure inside the camera housing, the camera module including an image sensor and a light source positioned at the distal end of the camera lumen adjacent the distal end of the first lumen, wherein the outer wall further comprises an inner surface and an outer surface, the camera lumen formed in the outer wall between the inner surface and the outer surface, wherein the outer face of the tubular end part of the support structure and/or the inner face of the tubular housing part of the camera housing are/is tapered or conical so that the gap has a cross-section that decreases in the direction from the proximal end to the distal end of the support structure, and wherein the outer face of the tubular end part of the support structure and/or the inner face of the tubular housing part of the camera housing are/is provided with ribs including two pivot forming ribs and two distance ribs, the two pivot forming ribs arranged diametrically opposite of the tubular end part of the support structure and/or of the tubular part of the camera housing, the two distance ribs distributed peripherally about the tubular end part of the support structure and/or of the tubular part of the camera housing, the two pivot forming ribs extending radially further than the distance ribs.

Description

[0044] The disclosure will now be explained in more detail below by means of examples of embodiments with reference to the very schematic drawing, in which

[0045] FIG. 1 is a perspective view of a double lumen endotracheal tube according to the present disclosure;

[0046] FIG. 2 illustrates, on a larger scale, a detail of FIG. 1;

[0047] FIG. 3 illustrates a cross-section through a camera housing with camera module of the double lumen endotracheal tube of FIG. 1;

[0048] FIG. 4 is a perspective view of a single lumen endotracheal tube according to the present disclosure;

[0049] FIG. 5 is a perspective view of an assembled camera housing according to the present disclosure;

[0050] FIG. 6 is a partly exploded perspective view of the camera housing of FIG. 5;

[0051] FIG. 7 is a side view of the camera housing of FIG. 5, before insertion of the camera module into the camera housing;

[0052] FIG. 8 is a view corresponding to that of FIG. 7, show as a perspective view;

[0053] FIG. 9 is a view corresponding to that of FIG. 7, show as a top view;

[0054] FIG. 10 is an axial section through the assembled camera housing of FIG. 5, however without the image transmission cable and the tapering proximal part;

[0055] FIG. 11 is a side view of the assembled camera housing of FIG. 5, however without the image transmission cable and the tapering proximal part, with indications of sectional views;

[0056] FIG. 12 is a cross-sectional view though the assembled camera housing along the line XII-XII of FIG. 11;

[0057] FIG. 13 is a cross-sectional view though the assembled camera housing along the line XIII-XIII of FIG. 11;

[0058] FIG. 14 is a perspective view of a support structure for the camera module according to the present disclosure;

[0059] FIG. 15 is a perspective view of the support structure of FIG. 14 seen from another point of view;

[0060] FIG. 16 is an end view of the support structure of FIG. 14 seen from a distal end thereof;

[0061] FIG. 17 is a perspective view of the camera housing of FIG. 5 without internal components inserted, but with internal features illustrated by means of broken lines;

[0062] FIG. 18 is an end view of a distal end wall of the camera housing, seen from a distal end thereof, and with internal features illustrated by means of broken lines;

[0063] FIG. 19 illustrates a perspective view of a proximal portion of the camera housing illustrated in FIG. 5;

[0064] FIG. 20 is a perspective view of the camera housing corresponding to that of FIG. 5, but with the proximal portion thereof removed; and

[0065] FIG. 21 illustrates a perspective view of an alternative proximal portion of the camera housing according to the present disclosure.

[0066] FIG. 1 illustrates a medical device according to the present disclosure in the form of a double lumen endotracheal tube 2 having a first lumen 3 in the form of a tracheal lumen and a second lumen 52 in the form of a bronchial lumen. A double lumen endotracheal tube as such is a well-known medical device and the use thereof is well-known to the skilled person. The first lumen 3 and the second lumen 52 extend together from the proximal end 5 of the first lumen 3 to the distal end 6 of the first lumen 3, and the second lumen 52 extends beyond the distal end 6 of the first lumen 3 to a distal end 54 of the second lumen 52. The double lumen endotracheal tube has a first inflatable cuff 59 arranged proximally the open distal end 6 of the first lumen 3 and a second inflatable cuff 60 arranged proximally the open distal end 54 of the second lumen 52. The first and second inflatable cuffs 59, 60 may be inflated in a well-known manner via a pilot balloon 61 provided with a one-way valve.

[0067] In use, the first inflatable cuff 59 is arranged in the trachea and the second inflatable cuff 60 is arranged in the left or right bronchus. Thereby, each bronchus may be ventilated separately in a well-known manner. The endotracheal tube may for instance be made of plastic, rubbers, e.g. butyl rubber, natural rubber or nitrile rubber, latex, neoprene, isoprene, polymers or silicones. The endotracheal tube may be made of Poly vinyl chloride (PVC) (with plasticizer), Thermoplastic elastomer (TPE), e.g. Styrene ethylene butylene styrene (SEBS), Styrene butylene styrene (SBS), Thermoplastic Polyurethanes (TPU) or Thermoplastic vulcanizates (TPV). Most TPVs are binary blends of polyolefins and thermoplastic diene elastomers. Other elastomers sometimes used in TPVs include butyl rubber, natural rubber or nitrile rubber blended with iPP. Alternatively, blends of one or more of these materials may be used for producing the medical device, such as a catheter or endotracheal tube.

[0068] The endotracheal tube may be a single use product. The different lumens may be co-extruded in the tube 2.

[0069] As will be described in further detail below, the endotracheal tube 2 furthermore includes a camera module 10 arranged in a dedicated camera lumen 4 at a distal end 9 thereof. The camera module 10 is arranged in said lumen of the tube at the distal end of the tracheal lumen 3 in order to visualise the tracheal carina and the distal end of the bronchial lumen during its insertion into the left or right bronchus. Furthermore, by means of a flush connection 62, a distal end wall 18 of a camera housing 14 including the camera module 10 may be flushed via flush openings 63 formed in the tube 2, as best seen in FIG. 2. The flush connection 62 is connected to the flush openings 63 via a number of flush channels 64 co-extruded in the outer wall 7 of tube 2 as illustrated in FIG. 3.

[0070] FIG. 4 illustrates another embodiment of the disclosure in the form of a single lumen endotracheal tube 2. A single lumen endotracheal tube as such is a well-known medical device and the use thereof is well-known to the skilled person. When comparing the single lumen endotracheal tube 2 of FIG. 4 with the double lumen endotracheal tube 2 of FIG. 1, it is seen that the single lumen endotracheal tube 2 of FIG. 4 does not have a second lumen 52, and therefore, the distal end 6 of the first lumen 3 also forms the distal end of the single lumen endotracheal tube 2 itself. Therefore, in the embodiment illustrated in FIG. 4, the image captured by the camera module 10 does not include any parts of the single lumen endotracheal tube 2 itself.

[0071] In a further embodiment of the medical device 1 according to the disclosure, the medical device 1 has the form of a not shown catheter of similar construction to the single lumen endotracheal tube 2 illustrated in FIG. 4. Said catheter may optionally be provided with an inflatable cuff 59 in the same way as illustrated in FIG. 4.

[0072] The present disclosure generally relates to a medical device 1 in the form of a tube 2 as illustrated in FIGS. 1 and 2. The tube has a first lumen 3 and a dedicated camera lumen 4. The first lumen 3 has a proximal end 5 and an open distal end 6, and the distal end 6 is adapted to be placed inside a body cavity during use of the medical device 1. The tube 2 has an outer wall 7 enclosing the first lumen 3 and the camera lumen 4, and the camera lumen 4 has a proximal end 8 and a distal end 9. The camera module 10 includes an image sensor 11 and one or more light sources 12 in the form of one or more LED's or incandescent bulbs. Furthermore, the light sources may be provided in the form of one or more fibre optic cables transmitting light from outside the camera module 10 to the camera module 10. The camera module 10 is arranged in the camera lumen 4 at the distal end 9 thereof so that the camera module 10 is positioned adjacent the distal end 6 of the first lumen 3. An image transmission cable 13 is attached to the camera module 10 and extends through part of the camera lumen 4 formed in the tube 2 in order to, during use, connect to a monitor or image display device 68. The camera module 10 is fixed in the camera lumen 4 by means of a camera housing 14 extending in a longitudinal direction and having a proximal end 15 and a distal end 16. The camera housing 14 includes a tubular housing part 17 surrounding the camera module 10 and a distal end wall 18. The tubular housing part 17 is seen in FIGS. 5 to 11. The tubular housing part 17 and the distal end wall 18 are integrally moulded and form one single housing element 19. The tubular housing part 17 fits tightly into the camera lumen 4 of the tube 2. Thereby, precise mounting of the camera module 10 in the camera lumen 4 may be facilitated in that the tight fit between the tubular housing part 17 and the camera lumen 4 may ensure precise positioning of the camera module 10 in the lumen 4 without any adjustments being necessary. In particular, dilatation of the camera lumen 4 in order to mount the camera module 10 in the camera lumen may not be necessary. Thereby, production may be made easier and faster with less individual steps. Although it may be preferred that the tubular housing part 17 has a circular cross-section as illustrated in the figures, any tubular form is possible. For instance, the cross-section of the tubular housing part 17 may have any suitable rounded form, such as oval or elliptic. The cross-section of the tubular housing part 17 may also have other forms, such as a polygonal form, e.g. a triangular, square, pentagonal, hexagonal, heptagonal, octagonal form or any other suitable form.

[0073] As illustrated in FIGS. 6 to 10, the camera housing 14 includes a support structure 20 for the camera module 10. The support structure 20 has a proximal end 21 and a distal end 22, and the proximal end 21 of the support structure 20 has a tubular end part 23 arranged inside the tubular housing part 17 of the camera housing 14. The image transmission cable 13 extends through the tubular end part 23 of the support structure 20, and the distal end 22 of the support structure is engaged with the camera module. Thereby, precise mounting of the camera module 10 in the camera lumen 4 may be further facilitated.

[0074] The tubular end part 23 of the support structure 20 has an outer face 24 being glued to an inner face 25 of the tubular part 23 of the camera housing 14. As best seen in FIG. 10, the outer face 24 of the tubular end part 23 of the support structure 20 is conical so that a gap 26 for glue is formed which has a cross-section generally decreasing in the direction from the proximal end 21 to the distal end 22 of the support structure 20. Thereby, correct application of glue may be ensured. Capillary effects may ensure that glue enters the gap 26 and the decreasing cross-section of the gap may serve to avoid that glue enters too far inside of the camera housing 14. Furthermore, the outer face 24 of the tubular end part 23 of the support structure 20 is provided with a number of ribs 27, 28 distributed in the circumferential direction of the outer face 24 in order to centre the support structure inside the camera housing such that the two parts can be glued together by utilizing capillary effects. As seen, the ribs 27, 28 only extend at a distal end 30 of the tubular end part 23 of the support structure 20 in order to facilitate entrance of glue into the gap.

[0075] As illustrated in FIGS. 14 to 16, said ribs 27, 28 include two pivot forming ribs 27 arranged diametrically opposite of the tubular end part 23 of the support structure 20. Together the two pivot forming ribs 27 provides a relatively tight fit with the corresponding inner face 25 of the tubular part 23 of the camera housing 14. Furthermore, said ribs 27, 28 include a number of distance ribs 28 distributed peripherally about the tubular end part 23 of the support structure 20 and together they provide a relatively loose fit with the corresponding inner face 25. As seen in FIG. 16, the two pivot forming ribs 27 protrude longer in the radial direction of the tubular end part 23 than the distance ribs 28 protrude. By this arrangement of the ribs 27, 28, it may be ensured that the support structure 20 may pivot about an axis generally extending through said pivot forming ribs 27 during the insertion of the support structure 20 into the tubular part 17 of the camera housing 14. Thereby, the distal end of the support structure 20 may better engage the camera module 10 in a flexible way so that the camera module may be guided into its correct position in the camera housing.

[0076] Comparing FIGS. 14 and 16, it is seen that the distal end 22 of the support structure 20 is provided with two spaced tabs 31 arranged generally symmetrically about a plane 32 extending through said two pivot forming ribs 27, and the two spaced tabs 31 are adapted to abut the camera module 10 as seen in FIG. 7. Thereby, both spaced tabs 31 may tend to engage the camera module 10 during its insertion into the camera housing, thereby even better ensuring that the camera module may be guided into its correct position.

[0077] As seen in FIGS. 14 and 15, the support structure 20 includes an elongated part 33 having generally semi-circular cross-section, and the elongated part 33 connects the proximal end 21 of the support structure 20 with the two spaced tabs 31. The elongated part 33 is provided with a peripherally extending recess 34 facing the inner face 25 of the tubular part 17 of the camera housing 14 next to the tubular end part 23 of the support structure 20 in order to stop the glue from moving further into the camera housing during application.

[0078] The tubular end part 23 of the support structure 20 has an inner face 35 being glued to an outer face 36 of the image transmission cable 13. The image transmission cable 13 transmits the image data from the image sensor 11 of the camera module 10, but furthermore, the image transmission cable 13 may transmit electric energy to an electric circuit of the camera module 10 and the light source 12 of the camera module 10. Furthermore, the image transmission cable 13 may include one or more fibre optic cables transmitting light from outside the camera module 10 to the camera module 10. The inner face 35 of the tubular end part 23 of the support structure 20 is conical so that a gap for glue is formed which has a cross-section generally decreasing in the direction from the proximal end 21 to the distal end 22 of the support structure 20 in order to ensure correct application of glue. Capillary effects may ensure that glue enters the gap and the decreasing cross-section of the gap may serve to avoid that glue enters too far inside of the camera housing. In the illustrated embodiment, the inner face 35 of the tubular end part 23 of the support structure 20 is further provided with a number of ribs 37 distributed in the circumferential direction of the inner face 35 in order to ensure that image transmission cable is centred inside the tubular end part of the support structure.

[0079] Comparing FIGS. 14 and 17, it is seen that the inner face 35 of the tubular part 17 of the camera housing 14 has a guide rib 38 extending in the longitudinal direction of the camera housing 14, and the support structure 20 has a longitudinal groove 39, wherein the guide rib 38 is adapted to slide in the groove 39 in order to ensure that the camera module 10 is guided to the correct rotational orientation inside the camera housing 14. As seen in FIG. 16, the groove 39 is arranged symmetrically about the plane 32 extending through said two pivot forming ribs 27, and the guide rib 38 has a loose fit in the groove 39 in order to better ensure that the support structure 20 may pivot about an axis generally extending through said pivot forming ribs 27 during the insertion of the support structure into the tubular part of the camera housing. Thereby, the distal end of the support structure may better engage the camera module 10 in a flexible way so that the camera module may be guided into its correct position in the camera housing.

[0080] As seen in FIGS. 10 to 13, the camera module 10 is arranged extending from the distal end 22 of the support structure 20. The inner face 25 of the tubular part 17 of the camera housing 14 is provided with the guide rib 38, and the guide rib 38 is wedge-formed at the distal end 16 of the camera housing 14 in order to guide the camera module 10 into its correct position during the last part of the insertion procedure.

[0081] As illustrated in FIGS. 13 and 18, a number of guide tabs 40 are distributed in the circumferential direction of the inner face 25 of the tubular part 17 of the camera housing 14 at the distal end wall 18 of the camera housing 14. The guide tabs 40 are provided on the inner face 25 of the tubular part and on the distal end wall 18, and the guide tabs 40 are arranged to guide the camera module 10 during its insertion into the camera housing 14. As further seen in FIGS. 17 and 18, the distal end wall 18 of the camera housing 14 has a recess 41 in which at least a portion of a lens barrel 42 of the camera module 10 is inserted. At least the part of the distal end wall 18 forming the recess 41 is formed in a material which is transparent. Possibly, the transparent part of the end wall 18 may be co-moulded with material not being transparent which may form a remaining part of the end wall 18. The lens barrel 42 of the camera module 10 may for instance include a lens stack and a barrel housing carrying and/or enclosing the lens stack.

[0082] As an alternative to the recess 41, the distal end wall 18 may be provided with a through-hole wherein the lens barrel of the camera module is positioned. The camera module would then need to be glued and sealed towards the edge of the through-hole. Preferably, the thickness of the distal end wall 18 in the bottom of the recess 41 is less than 0.4 mm. Preferably around 0.25 mm. The thickness of the end wall 18 at the illustrated lens structures 66 is more than 1 mm. In a preferred embodiment the wall thickness of the wall of the tubular housing part 17 of camera housing is at least 0.4 mm.

[0083] Furthermore, as seen in FIG. 18, the distal end wall 18 of the camera housing comprises two opposed lens structures 66 which in the assembled state of the camera housing are positioned in front of the light sources 12 in the form of LEDs of the camera module 10, as seen in FIG. 6.

[0084] As seen in FIG. 5, the camera housing 14 includes a proximal portion 43 arranged at a proximal end 44 of the tubular housing part 17. The proximal portion 43 has a proximal end 46 and a distal end 47 and a tapering part 48 arranged between the proximal end 46 and the distal end 47. The tapering part 48 may for instance be conical. In the illustrated embodiment, the tapering part 48 is composed of a number of sections having varying configuration. An outer diameter of the proximal end 46 is smaller than an outer diameter of the distal end 47. Furthermore, the tubular housing part 17 has an outer cylindrical surface 49, and the outer diameter of the distal end 47 of the proximal portion 43 corresponds to an outer diameter of the outer cylindrical surface 49. Thereby, a smooth transition between the proximal portion 43 and the tubular housing part 17 may be ensured. The tapered part of the proximal portion 43 may make it much easier to push the camera housing into the camera lumen of the tube which may be made of a soft/flexible polymer material. Thereby, dilatation of the camera lumen 4 of the tube in order to mount the camera module 10 in the camera lumen may be even less necessary. It is noted that the outer surface of the tubular housing part 17 itself may also taper or may be slightly conical in order to facilitate insertion of the camera housing into the camera lumen of the tube 2.

[0085] The proximal portion 43 is formed as a separate element attached to the tubular housing part 17, usually by means of glue. As seen in FIG. 19, the distal end 47 of the proximal portion 43 may have a number of protrusions 50 distributed in its circumferential direction and adapted to abut the proximal end 44 of the tubular part 17.

[0086] As illustrated in FIG. 20, the image transmission cable 13 is retained inside of the proximal portion 43 by means of a crimp 51 fixed on the image transmission cable 13 inside the proximal portion 43. Alternatively, a knot is tied on the image transmission cable 13, which is fixed inside the proximal portion 43. FIG. 21 illustrates an alternative embodiment, in which the image transmission cable 13 may be retained inside of the proximal portion 43 by means of a labyrinth in which the image transmission cable 13 may be trapped and/or glued.

[0087] As seen in FIG. 3, the outer wall 7 of the tube 2 is generally ring-formed and surrounds the first lumen 3 and the second lumen 52, and the camera lumen 4 is formed in the material of the outer wall 7 between an inner surface and an outer surface of the outer wall. As seen, the camera lumen 4 has a substantially smaller cross-section than the first lumen 3 and the second lumen 52. For instance, when the camera housing 14 is inserted into the camera lumen 4, the camera lumen 4 may at that position have a cross-sectional area being less than ½ or less than ⅓ of a cross-sectional area of the first lumen 3 or of the second lumen 52. The first lumen 3 and the second lumen 52 are separated by means of a partition wall 55 in the dual lumen tracheal tube illustrated in FIGS. 1 and 2. As further seen, the camera lumen 4 is formed in the material of the outer wall 7 at a position where the partition wall 55 is connected to the outer wall 7. As also seen, the first lumen 3 and the second lumen 52 are generally symmetrically arranged about the partition wall 55 and in relation to the camera lumen 4.

[0088] In the single lumen tracheal tube 2 illustrated in FIG. 4, the outer wall 7 of the tube 2 is generally ring-formed and surrounds the first lumen 3, and the camera lumen 4 is formed in the material of the outer wall 7 between an inner surface and an outer surface of the outer wall.

[0089] As illustrated in FIG. 10, the tubular housing part 17 of the camera housing 14 has a cylindrical outer surface 56 having a central axis 57 of symmetry, and a lens barrel 42 of the camera module 10 is eccentrically arranged in relation to the cylindrical outer surface of the tubular housing part. When further comparing with FIG. 3, it is understood that a central axis 58 of the lens barrel 42 of the camera module is displaced in relation to the central axis 57 of symmetry of the cylindrical outer surface 56 of the tubular housing part 17 of the camera housing 14 in a direction 67 so that the lens barrel 42 is closer to the first lumen 3 than to the second lumen 52. Thereby, it may be ensured that the viewing angle of the camera module 10 covers relatively more of the surroundings of the tube 2 than it covers of the part of the tube enclosing the second lumen 52 distally of the first lumen 3. Thereby, it may be ensured that the image captured by the camera module 10 shows more of the anatomy and less of the tubing of the second bronchial lumen 52 provided with the second inflatable cuff 60 which is inserted into the bronchus.

LIST OF REFERENCE NUMBERS

[0090] 1 medical device [0091] 2 tube [0092] 3 first lumen of tube [0093] 4 camera lumen [0094] 5 proximal end of first lumen [0095] 6 distal end of first lumen [0096] 7 outer wall of tube [0097] 8 proximal end of camera lumen [0098] 9 distal end of camera lumen [0099] 10 camera module [0100] 11 image sensor [0101] 12 light source [0102] 13 image transmission cable [0103] 14 camera housing [0104] 15 proximal end of camera housing [0105] 16 distal end of camera housing [0106] 17 tubular housing part of camera housing [0107] 18 distal end wall of camera housing [0108] 19 single housing element formed by tubular housing part and distal end wall [0109] 20 support structure [0110] 21 proximal end of support structure [0111] 22 distal end of support structure [0112] 23 tubular end part of support structure [0113] 24 outer face of tubular end part [0114] 25 inner face of tubular housing part of camera housing [0115] 26 gap for glue [0116] 27 pivot forming rib [0117] 28 distance rib [0118] 29 proximal end of tubular end part [0119] 30 distal end of tubular end part [0120] 31 tab of support structure [0121] 32 plane of symmetry of support structure [0122] 33 elongated part of support structure [0123] 34 peripherally extending recess of elongated part [0124] 35 inner face of tubular end part of support structure [0125] 36 outer face of image transmission cable [0126] 37 ribs of inner face of tubular end part of support structure [0127] 38 longitudinal guide rib of tubular part of camera housing [0128] 39 longitudinal groove of support structure [0129] 40 guide tab of camera housing [0130] 41 recess of distal end wall of camera housing [0131] 42 lens barrel of camera module [0132] 43 proximal portion of camera housing [0133] 44 proximal end of tubular housing part [0134] 45 distal end of tubular housing part [0135] 46 proximal end of proximal portion [0136] 47 distal end of proximal portion [0137] 48 tapering part of proximal portion [0138] 49 outer cylindrical surface of tubular housing part [0139] 50 protrusion of distal end of proximal portion [0140] 51 crimp [0141] 52 second lumen of tube [0142] 53 proximal end of second lumen [0143] 54 distal end of second lumen [0144] 55 partition wall [0145] 56 cylindrical outer surface of tubular housing part [0146] 57 central axis of symmetry of cylindrical outer surface [0147] 58 central axis of lens barrel [0148] 59 first inflatable cuff [0149] 60 second inflatable cuff [0150] 61 pilot balloon with one-way valve [0151] 62 flush connection [0152] 63 flush opening [0153] 64 flush channel [0154] 65 printed circuit board of camera module [0155] 5 66 lens structure [0156] 67 direction [0157] 68 monitor or image display device