Septum housing

Patent metadata

Field	Value
Publication number	US-2018093085-A1
Application number	US-201615286278-A
Country	US
Kind code	A1
Filing date	Oct 5, 2016
Priority date	Oct 5, 2016
Publication date	Apr 5, 2018
Grant date	—

Abstract

A catheter assembly may include a catheter adapter, a septum housing, and a septum. The catheter adapter may include a distal end, a proximal end, an inner wall extending between the distal end and the proximal end, and a lumen formed by the inner wall. The septum housing may include one or more protrusions and may be secured to the inner wall by one or more of the following: an interference fit between the one or more protrusions and the inner wall, a snap fit between the one or more protrusions and the inner wall, and bonding between the one or more protrusions and the inner wall. The septum may be at least partially disposed within the septum housing and configured to at least substantially seal the lumen.

First claim

1 . A catheter assembly, comprising:
a catheter adapter, wherein the catheter adapter comprises a distal end, a proximal end, an inner wall extending between the distal end and the proximal end, and a lumen formed by the inner wall; a septum housing disposed within the lumen of the catheter adapter, wherein the septum housing comprises one or more protrusions, wherein the septum housing is secured to the inner wall by one or more of the following: an interference fit between the one or more protrusions and the inner wall, a snap fit between the one or more protrusions and the inner wall, and bonding between the one or more protrusions and the inner wall; and a septum at least partially disposed within the septum housing and configured to at least substantially seal the lumen.

2 . The catheter assembly of claim 1 , wherein the inner wall comprises a groove, wherein in response to the one or more protrusions aligning with the groove, the septum housing resiliently moves outwardly to retain the one or more protrusions within the groove in the snap fit.

3 . The catheter assembly of claim 1 , wherein the bonding between the one or more protrusions and the inner wall comprises adhesive bonding, wherein the catheter adapter further comprises a vent hole that provides a venting pathway between an exterior of the catheter assembly and the adhesive bonding.

4 . The catheter assembly of claim 1 , wherein the one or more protrusions comprise a lip that extends around an outer circumference of the septum housing.

5 . The catheter assembly of claim 4 , wherein the bonding between the one or more protrusions and the inner wall comprises adhesive bonding, wherein the adhesive bonding extends along an exterior of the septum housing proximal to the lip, wherein the inner wall comprises a ring that contacts the exterior of the septum housing proximal to the lip such that a cavity is formed between the ring and the lip, wherein the venting pathway provides access to the cavity.

6 . The catheter assembly of claim 5 , wherein the cavity comprises an angled proximal surface.

7 . The catheter assembly of claim 1 , wherein the bonding between the one or more protrusions and the inner wall comprises chemical bonding, wherein the chemical bonding is disposed where the inner wall contacts the septum and the septum housing.

8 . The catheter assembly of claim 1 , wherein the one or more protrusions comprise multiple resilient catch features, wherein the catch features are spaced apart about an outer circumference of the septum housing.

9 . The catheter assembly of claim 8 , wherein the catheter adapter comprises an opening, wherein in response to one or more of the catch features aligning with the opening, the one or more of the catch features move outwardly to retain the one or more of the catch features within the opening in the snap fit.

10 . The catheter assembly of claim 9 , wherein an exterior of the catheter adapter comprises a safety mechanism engagement feature spaced apart from the opening.

11 . The catheter assembly of claim 1 , wherein the one or more protrusions comprise threads disposed on a distal end of the septum housing, wherein the inner wall of the catheter adapter comprises corresponding threads to secure the septum housing to the inner wall.

12 . A catheter assembly, comprising:
a catheter adapter, wherein the catheter adapter comprises a distal end, a proximal end, an inner wall extending between the distal end and the proximal end, a lumen formed by the inner wall, and a side port, wherein the inner wall comprises a groove or opening; a septum housing disposed within the lumen of the catheter adapter, wherein the septum housing comprises one or more protrusions, wherein in response to the septum housing being inserted into the distal end of the catheter adapter, the one or more protrusions are biased inwardly, wherein in response to the one or more protrusions being further inserted into the distal end and aligning with the groove or opening, the one or more protrusions move resiliently outward such that the one or more protrusions are retained in the groove or opening; and a septum at least partially disposed within the septum housing and proximal to the side port, wherein the septum is configured to at least substantially seal the lumen.

13 . The catheter assembly of claim 12 , wherein the septum housing is secured to the inner wall by bonding between the one or more protrusions and the inner wall.

14 . The catheter assembly of claim 13 , wherein the bonding comprises laser or ultrasonic welding.

15 . The catheter assembly of claim 13 , wherein the bonding between the one or more protrusions and the inner wall comprises chemical bonding, wherein the chemical bonding is disposed where the inner wall contacts the septum and the septum housing.

16 . The catheter assembly of claim 13 , wherein the groove or opening is a groove, wherein the bonding between the one or more protrusions and the inner wall comprises adhesive bonding, wherein the adhesive bonding extends along an exterior of the septum housing proximal to the one or more protrusions, wherein the catheter adapter further comprises a vent hole that provides a venting pathway between an exterior of the catheter assembly and the adhesive bonding.

17 . The catheter assembly of claim 16 , wherein the one or more protrusions comprise a lip that extends around an outer circumference of the septum housing, wherein the vent hole is disposed proximate to a proximal edge of the lip.

18 . The catheter assembly of claim 12 , wherein the one or more protrusions comprise multiple resilient catch features, wherein the catch features are spaced apart about an outer circumference of the septum housing.

19 . The catheter assembly of claim 8 , wherein the groove or opening is an opening, wherein an exterior of the catheter adapter comprises a safety mechanism engagement feature, wherein the safety engagement feature includes a groove configured to selectively couple with a V-clip, wherein the groove is spaced apart from the opening.

20 . A catheter assembly, comprising:
a catheter adapter, wherein the catheter adapter comprises a proximal piece, a distal piece, and a lumen extending through the proximal piece and the distal piece, wherein the proximal piece and the distal piece are selectively coupled together at a coupling, wherein the distal piece comprises a side port, wherein the proximal piece is disposed proximal to the side port; and a septum configured to at least substantially seal the lumen, wherein the septum is disposed proximate the coupling, wherein a proximal end of the proximal piece abuts and extends over a portion of a surface area of a proximal face of the septum.

Assignees

• Becton Dickinson Co

Inventors

• Burkholz Jonathan Karl
• Hyer Daniel Kirk
• Wang Bin
• Warner Tyler
• Sonderegger Ralph L
• Davis Eric
• Ellis Carl

Classifications

• A61M2039/0072

  Means for increasing tightness of the septum, e.g. compression rings, special materials, special constructions · CPC title

• A61M39/04 Primary

  having pierceable self-sealing members · CPC title

• A61M39/00

  Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use (for respiratory devices, e.g. tracheal tubes A61M16/00; artificial heart valves A61F2/24) · CPC title

• A61M2039/062

  used with a catheter · CPC title

• A61M39/06

  Haemostasis valves, i.e. gaskets sealing around a needle, catheter or the like, closing on removal thereof · CPC title