Medical device

• US 20060264904A1
• Filed: 05/09/2005
• Published: 11/23/2006
• Est. Priority Date: 05/09/2005
• Status: Abandoned Application

• Current Assignee: Boston Scientific Scimed, Inc. (Boston Scientific Corporation)
• Original Assignee: Boston Scientific Scimed, Inc. (Boston Scientific Corporation)
• Inventors: Webb, William, Kerby, Walter Lynn
• Application Number:
  US11/125,987
• Publication Number:
  US 20060264904A1
• Time in Patent Office: Days
• US Class Current: 604/523
• CPC Class Codes: A61M 2025/0098 having a strain relief at the proximal end, e.g. sleeve
• CPC Class Codes: A61M 25/0014 Connecting a tube to a hub
• CPC Class Codes: A61M 25/0021 characterised by the form of the tubing A61M25/0054 takes precedence
• CPC Class Codes: A61M 25/0043 characterised by structural features
• CPC Class Codes: A61M 25/005 with embedded materials for reinforcement, e.g. wires, coils, braids
• CPC Class Codes: A61M 25/0051 made from fenestrated or weakened tubing layer
• CPC Class Codes: A61M 25/0097 characterised by the hub connectors A61M39/10

Abstract

A medical device including an alternative shaft configuration, structure, assembly, and method for making. For example, some shaft configurations relate to the use of an inner and an outer tubular member. Additionally, some alternative distal tip structures, assemblies, and methods for elongated medical devices are disclosed. Additionally, some alternative structures, assemblies, and methods for proximal shaft constructions and for connecting manifolds to medical devices are disclosed. For example, the shaft of a medical device may be provided with a flared proximal portion that is adapted to mate with structure on a manifold assembly. Additionally, the manifold assembly may include structures, for example, protrusions and/or recessed portions, which are adapted to mate with the flared section of the shaft.

Claims

1. A medical catheter comprising:

an elongated shaft defining a lumen extending along a longitudinal axis, the shaft including a proximal portion having a proximal end and a distal portion having a distal end;

the proximal portion of the shaft including a flared section disposed adjacent the proximal end, the flared section being flared outwardly at an angle relative to the longitudinal axis of the shaft.

2. The medical catheter of claim 1, wherein the shaft defines an inner surface that defines the lumen, and the flared section is flared outwardly such that the inner surface of the shaft within the flared section extends proximally at an angle away from the longitudinal axis.

3. The medical catheter of claim 1, wherein the shaft defines an inner surface that defines the lumen, and wherein the proximal portion of the shaft includes a second section disposed distally of the flared section, wherein the inner surface of the shaft within the second section extends in a first direction relative to the longitudinal axis, and the inner surface of the shaft within the flared section extends outwardly at an angle relative to the first direction.

4. The medical catheter of claim 3, wherein the first direction extends parallel with the longitudinal axis of the shaft.

5. The medical catheter of claim 1, wherein the lumen has a greater diameter at the proximal end of the shaft than the diameter of the lumen at a point more distal along the shaft.

6. The medical catheter of claim 1, wherein the flared section includes a proximal end and a distal end, and due to the flaring of the flared section, the inner diameter of the lumen adjacent the proximal end of the flared section is greater than the inner diameter of the lumen adjacent the distal end of the flared section.

7. The medical catheter of claim 1, wherein the flared section is flared or tapered in a generally linear fashion proximally and outwardly.

8. The medical catheter of claim 1, wherein the flared section is flared in a curvilinear or step-wise fashion.

9. The catheter of claim 1, wherein the flared section defines a mouth having an inside diameter that is greater than an inside diameter of the lumen along the remainder of the shaft.

10. The medical catheter of claim 1, further comprising:

a hub connected to the proximal end of the shaft, the hub including a hub lumen in fluid communication with the lumen of the shaft, wherein the hub includes one or more protrusion extending there from that are disposed at least partially within the flared section of the shaft.

11. The medical device of claim 10, wherein the hub defines a distal opening in fluid communication with the hub lumen, and the one or more protrusions extend annularly about the distal opening.

12. The medical device of claim 10, wherein the hub includes one or more recessed portion defined therein, and the flared section of the shaft is disposed at least partially within the recessed portion.

13. The medical device of claim 12, wherein the hub defines a distal opening in fluid communication with the hub lumen, and the one or more recessed portions extend annularly about the distal opening.

14. The medical catheter of claim 10, wherein the hub is connected to the proximal end of the shaft using U.V. curable adhesive.

15. A hub for use in medical device applications, the hub comprising:

a body including a proximal portion having a proximal end and a distal portion having a distal end;

a lumen defined in the proximal portion, and a pocket defined in the distal portion, wherein the lumen and the pocket and are in fluid communication through an opening defined at a junction between the lumen and the pocket;

one or more protrusion defined in the body about the opening and extending into the pocket.

16. A hub for use in medical device applications, the hub comprising:

a body including a proximal portion having a proximal end and a distal portion having a distal end;

a lumen defined in the proximal portion, and a pocket defined in the distal portion, wherein the lumen and the pocket and are in fluid communication through an opening defined at a junction between the lumen and the pocket;

one or more recessed portion defined in the body about the opening.

17. A method of making a medical catheter, the method comprising:

providing an elongated shaft defining a lumen extending along a longitudinal axis, the shaft including a proximal portion having a proximal end and a distal portion having a distal end, the proximal portion of the shaft including a flared section disposed adjacent the proximal end, the flared section being flared outwardly at an angle relative to the longitudinal axis of the shaft;

providing a hub including a hub body defining a lumen having an opening, wherein the hub includes one or more protrusion defined in the body about the opening;

disposing the flared section of the shaft about at least a portion of the protrusions such that the lumen of the shaft and the lumen of the hub are in fluid communication; and

attaching the hub to the shaft.

18. The method of claim 17, wherein the hub is attached to the shaft using U.V. curable adhesive.

19. A method of making a medical catheter, the method comprising:

providing an elongated shaft defining a lumen extending along a longitudinal axis, the shaft including a proximal portion having a proximal end and a distal portion having a distal end, the proximal portion of the shaft including a flared section disposed adjacent the proximal end, the flared section being flared outwardly at an angle relative to the longitudinal axis of the shaft;

providing a hub including a hub body defining a lumen having an opening, wherein the hub includes one or more recessed portions defined in the body about the opening;

disposing the flared section of the shaft within at least a portion of the recessed portion such that the lumen of the shaft and the lumen of the hub are in fluid communication; and

attaching the hub to the shaft.

20. A medical catheter comprising:

an elongated shaft defining a lumen extending along a longitudinal axis, the shaft including a proximal portion having a proximal end and a distal portion having a distal end, the proximal portion of the shaft including means for mating with a hub.

21. A hub for use with a medical catheter, the hub comprising:

a body including a proximal portion having a proximal end and a distal portion having a distal end, and a lumen defined by the body having a distal opening;

means for mating with an elongated shaft of a catheter.

22. A medical catheter comprising:

an elongated inner tubular member including a proximal portion and a distal portion and defining an outer surface and a lumen, the inner tubular member including a first layer of polymer material and a reinforcing member; and

an elongated outer tubular member having an outer surface and an inner surface, and including a plurality of apertures defined in the outer surface thereof, the outer member being disposed about the inner tubular member such that at least a portion of the outer surface of the inner tubular member is spaced from the inner surface of the outer member.

23. The medical catheter of claim 22, wherein the inner tubular member further includes one or more layers of polymer material, and wherein the reinforcing member is disposed between two layers of polymer material.

24. The medical catheter of claim 22, wherein the outer tubular member is disposed about the proximal portion of the inner tubular member such that the distal portion of the inner tubular member is free of the reinforcing member.

26. The medical catheter of claim 22, wherein the tip structure includes one or more layers of material disposed on the distal portion of the inner tubular member.

25. A medical catheter comprising:

an elongated inner tubular member including a proximal portion and a distal portion and defining an outer surface and a lumen;

a elongated outer tubular member having an proximal end and a distal end, and defining an outer surface and an inner surface, and including a plurality of apertures defined in the outer surface, the distal end of the outer tubular member including a reduced diameter portion that has an outer diameter that is smaller than the outer diameter along at least one other portion of the outer tubular member adjacent thereto;

the outer tubular member being disposed about the inner tubular member such that the distal portion of the inner tubular member is free of the outer tubular member and such that a space is formed between the outer surface of the inner tubular member and the inner surface of the outer tubular member along a portion of the proximal portion; and

a distal tip structure coupled to the distal portion of the inner tubular member and the distal end of the outer tubular member, wherein at least a portion of the distal tip structure overlaps the reduced diameter portion of the outer tubular member.