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Catheter assembly having a protective sheath and method of manufacture

A technology of protective sleeve and catheter, applied in the direction of catheter, connecting pipe, coating, etc., can solve the problem of not using PTA balloon and so on

Active Publication Date: 2014-08-20
ACOTEC SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Overmolding is a well known method in industrial applications, but not applied to PTA airbags

Method used

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  • Catheter assembly having a protective sheath and method of manufacture
  • Catheter assembly having a protective sheath and method of manufacture
  • Catheter assembly having a protective sheath and method of manufacture

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Embodiment Construction

[0017] Elements or parts of elements common to the embodiments described below will be denoted by the same reference numerals.

[0018] Referring to the preceding figures, the reference numeral 4 generally denotes a catheter, particularly but not exclusively a catheter for percutaneous transluminal angioplasty (PTA).

[0019] The catheter 4 comprises a connection 8 comprising a wire channel 12 and an inflation channel 16 .

[0020] In general, the catheter 4 according to the invention has a coaxial or double lumen structure. Anyway, the catheter can also have further lumens for different purposes.

[0021] The wire channel 12 is used for housing a wire for guiding and inserting the catheter 4 in a predetermined container. Additionally, an inflation channel 16 is useful in order to deliver pressurized fluid to the distal end of the shaft. For example, the fluid under pressure may be air or fluid. Furthermore, it is possible to use the inflation channel as, for example, a pe...

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PUM

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Abstract

A catheter (4) comprising a connector (8) with a guide wire channel (12) and an inflation channel (16), a shaft (20) extending from a proximal end (24) to a distal end (28) and having a guide wire lumen (32) and an inflation lumen (36), the shaft (20) being connected, at its proximal end (24), to the connector (8) so that said guide wire lumen (32) and inflation lumen (36) are mechanically and fluidically connected with said guide wire channel (12) and inflation channel (16) respectively. The connection is realised in correspondence of a kink portion (44). The catheter (4) comprises a protective sheath (52) placed around an external wall (56) of the shaft (20) and extending from a first sheath end (60), axially placed at a first distance (L1) from the proximal end (24) of the shaft (20) so as to allow a direct contact and a fixing between the external wall (56) of the shaft (20) and the internal wall (64) of the kink portion (44), to a second sheath end (68), axially extending at least in correspondence of a second kink end (42) of the kink portion (44), so as to avoid a direct contact and a fixing between the external wall (56) of the shaft (20) and the internal wall (64) of the kink portion (44).

Description

technical field [0001] The present invention relates to a catheter assembly, especially a percutaneous transluminal angioplasty (PTA) balloon catheter (balloon catheter) with a coaxial or double lumen structure. Background technique [0002] In particular, it is known in the art to enable a balloon catheter comprising a connection mechanically connected to the proximal end of the shaft to correspond to a kink. [0003] The connector is usually over-moulded (over-moulded) over the kink in order to obtain a strong connection between the connector and the shaft. [0004] Overmolding is a well known method in industrial applications, but has not been applied to PTA airbags. [0005] The main reasons are that the shaft must be very small in order to be inserted through a small introducer; and the shaft must resist high pressure in order to inflate the balloon at its distal end. [0006] This problem is exacerbated in the shaft of catheters with coaxial or dual lumen configurati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M25/00
CPCA61M25/0014A61M25/0045A61M25/0054A61M25/1025A61M25/104A61M39/10
Inventor 西尔维奥·沙夫纳
Owner ACOTEC SCI
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