Surgical drain

Patent metadata

Field	Value
Publication number	US-2018338714-A1
Application number	US-201815967981-A
Country	US
Kind code	A1
Filing date	May 1, 2018
Priority date	May 23, 2017
Publication date	Nov 29, 2018
Grant date	—

Abstract

A medical drain sensor is provided located in a region of a drain tube which has turbulent or re-circulatory exudate flow. Means are provided in some embodiments to promote or enhance such flow.

First claim

What is claimed is:

1 . A medical drain comprising a tube within which, in use, exudate flows from a surgical site, at least one sensor located in the drain to be exposed to exudate flow and located in a region of re-circulatory exudate flow.

2 . A medical drain as claimed in claim 1 wherein the sensor is located, at least in part, within a vertical limb of a “T” shaped section of the drain.

3 . A medical drain as claimed in claim 1 or 2 comprising flow modifying means located in the tube to provide or enhance a re-circulatory exudate flow over the sensor.

4 . A medical drain as claimed in claim 2 wherein the flow modifying means comprises at least one turbulator.

5 . A medical drain as claimed in claim 2 wherein the turbulator comprises a projection extending inwardly to a longitudinal axis of the drain from an internal face of the tube.

6 . A medical drain as claimed in claim 5 wherein the turbulator projects inwardly by a distance in the range of ⅕ to ⅓ of the diameter of the tube, preferably, ¼ of the diameter of the tube.

7 . A medical drain as claimed in any preceding claim when dependent on claim 4 wherein the turbulator comprises an inclined face.

8 . A medical drain as claimed in claim 7 wherein the turbulator extends in the direction of flow and forms a wedge shape in longitudinal section.

9 . A medical drain as claimed in claim 8 wherein the turbulator extends in the direction of flow by a distance in the range of 10 to 70%, but preferably equal to 50%, of the diameter of the tube.

10 . A medical drain as claimed in any one of claims 7 to 9 wherein the face is inclined at an angle to the inner wall of the tube by an angle in the range 14.5 to 45 degrees, preferably in the range of 14.5 to 30 degrees.

11 . A medical drain as claimed in any preceding claim wherein the sensor is located on the turbulator.

12 . A medical drain as claimed in claim 11 when dependent on claim 7 wherein the sensor is located on the inclined face.

13 . A medical drain as claimed in claim 12 wherein the sensor is located at an end of the inclined face proximal a longitudinal axis of the tube.

14 . A medical drain as claimed in any preceding claim wherein the sensor is a microelectrode sensor or an array of microelectrode sensors.

15 . A medical drain as claimed in claim 14 wherein the sensor is formed on a substrate positioned on the wall of the tube or turbulator.

16 . A medical drain as claimed in claim 14 wherein the sensor is integrally formed on the wall of the tube or the surface of the turbulator.

17 . A medical drain as claimed in any preceding claim when dependent on claim 2 wherein the sensor is mounted on a removable support located in the vertical limb of the T.

18 . A medical drain as claimed in claim 17 wherein the sensor is mounted to provide a sensor surface directed at an angle to the longitudinal axis of the drain.

19 . A medical drain as claimed in any preceding claim comprising a plurality of sensors located at regions of re-circulatory flow.

Assignees

• Sofradim Production
• Cea Commissariat A Lenergie Atomique Et Aux Energies Alternatives

Inventors

• Bayon Yves
• Guyader Dagmar
• Gougis Maxime
• Alias Mélanie
• Vignoud Séverine
• Bottausci Frederic
• Mailley Pascal

Classifications

• A61B5/150992 Primary

  Blood sampling from a fluid line external to a patient, such as a catheter line, combined with an infusion line; Blood sampling from indwelling needle sets, e.g. sealable ports, luer couplings or valves · CPC title

• A61M1/734 Primary

  Visual indicating means for flow · CPC title

• A61B5/742

  using visual displays (displays for heart-related electrical signals, e.g. ECG, A61B5/339) · CPC title

• A61B5/0022

  Monitoring a patient using a global network, e.g. telephone networks, internet · CPC title

• A61M27/00

  Drainage appliance for wounds or the like {, i.e. wound drains, implanted drains} ({negative pressure wound therapy devices A61M1/90;} implements for holding wound open A61B17/02 {; middle ear drainage A61F11/202}) · CPC title