GB2141943A

GB2141943A - Mixing by entraining in flow

Info

Publication number: GB2141943A
Application number: GB08412551A
Authority: GB
Inventors: James Edward Burroughs
Original assignee: Kendall Co
Current assignee: Kendall Co
Priority date: 1983-05-19
Filing date: 1984-05-17
Publication date: 1985-01-09
Also published as: CA1238586A; FR2546056A1; ES532613A0; AU575321B2; AU2795684A; GB2141943B; ZA843592B; BE899704A; FR2546056B1; IT1178380B; JPS6045346A; ES8600920A1; IT8448213A0; GB8412551D0; DE3417071A1; BR8402356A

Abstract

A dosing device for mixing a material with a flow of liquid comprises a container 42 having a flow inlet and outlet 44, 46 and means for locating the dosing material 50 therein whereby the flow of liquid contacts the material and entrains a proportion as a mixture by the flow of the liquid. In the embodiments described the device is formed by concentric tubular members 42, 48 with a cavity 56 therebetween in which is located the dosing material which may be an antiseptic agent. <IMAGE>

Description

SPECIFICATION Adapter with antiseptic agent The present invention relates to adapters, and more particularly to adapters for liquid drainage systems.

Urine drainage systems have been known in the past. Such systems normally comprise a receptacle having a chamber, a drainage tube having a downstream end communicating with the chamber, and a catheter have a proximal end connected to an upstream end of the drainage tube. The catheter is passed through the urethra of a patient until a distal end of the catheter is located in the patient's bladder. In use, urine drains through the catheter and drainage tube into the receptacle chamber for retention therein.

The receptacles of such systems normally have a tubular section communicating with a lower portion of the chamber. In use, the tubular section is opened in order to periodically drain urine from the receptacle chamber.

However, it is believed that the tubular section is a source of entry of bacteria into the system, since the tubular section is periodically opened to the atmosphere, and is manipulated by the nonsterile hands of hospital personnel. Hence, it is desirable to eliminate this source of bacteria, since the bacteria by retrograde movement may pass into the bladder with possible deleterious results to the patient.

According to one aspect of the present invention an adapter for a liquid drainage system comprises, an outer tube, and an inner tube defining a cavity between the inner and outer tube with the inner tube having a plurality of openings extending therethrough.

A further aspect of the present invention is a solid antiseptic agent in the said cavity. As used herein, the term solid will include a semi-solid, such as a gel.

The antiseptic agent is desirably such as to be activated to kill bacteria when urine drains through the inner tube and through the openi#ngs onto the antiseptic agent.

The adapter may be connected to a tubular.

section which communicates with a lower portion of the receptacle.

Alternatively, the adapter may be connected to an upstream portion of a drainage tube which communicates with an upper portion of the receptacle.

The invention may be put into practice in various ways and a number of specific embodiments will be described by way of example to illustrate the invention with reference to the accompanying drawings, in which: Figure 1 is a fragmentary elevational view of a liquid drainage system containing an adapter in accordance with the present invention; Figure 2 is a longitudinal sectional view of an adapter in accordance with the present invention; and Figures 3 to 6 are sectional views illustrating four other embodiments of an adapter in accordance with the present invention.

Referring now to Figures 1 and 2, there is shown a liquid drainage system 10 comprising a receptacle 12, a drainage tube 14, a catheter 16, and an adapter 18. The recepta cle 12 has a front wall 20 of flexible plastic material, and a back wall 22 of flexible plastic material, with the front and back walls 20 and 22 being joined at their periphery in order to define a chamber 24 intermediate the front and back walls 20 and 22. The receptacle 12 may have a vent 26 having a bacteria filter of known type in order to filter bacteria from air passing from the atmosphere through the vent 26 into the chamber 24. The receptacle 12 has a connector 28 attached to the front wall 20, such that the connector 28 communicates with an upper portion of the chamber 24.The receptacle 12 has a tubular section 30 communicating with a lower portion of the chamber 24, and a clamp 32 of known type on the tubular section 30. When it is desired to drain urine from the chamber 24, the clamp 32 is opened in order to permit passage of the urine through the tubular section 30. As shown, the adapter 18 is connected to an outer end of the tubular section 30, and the adapter 18 may be placed in a pocket 34 on the front wall 20 in a storage position of the tubular section 30 and adapter 18 after the clamp 32 has been closed.

The drainage tube 14 has a downstream end 36 connected to the connector 28, such that the drainage tube 14 communicates with the chamber 24 through the connector 28.

The drainage tube 14 also has an upstream end 38, and the catheter 16 has a proximal end 40 located outside the patient's body.

Referring now to Figure 2 the adapter 18 has an outer cylindrical tube 42 having opposed hollow tapered ends 44 and 46. The adapter 18 has an inner cylindrical tube 48 which is spaced from the outer tube 42 in order to define a cavity 50 therebetween, with the inner tube 48 defining a channel 51. As shown, the inner tube 48 has a plurality of openings 52 extending therethrough which communicate between the channel 51 and the cavity 50. The adapter 18 has a solid antiseptic agent 54 received in the cavity 50.

Suitable antiseptic agents include the following: polyvinylpyrrolidone-iodine, hexachlorophene, chlorhexidine gluconate, paraformaldehyde, hypochlorous acid salts, metal peroxide, p-chlorometaxylenol, and phenylmercuric acetate.

As shown, the adapter 18 may be connected to the outer end of the tubular section 30. Also, the adapter 18 may be connected between the upstream end 38 of the drainage tube 14 and the proximal end 40 of the catheter 16. In both cases, the tapered outer ends 44 and 45 of the adapter 18 are received in the tubes or catheter.

In use, when urine drains through the adapter 18, the urine passes through the openings 52 and onto the antiseptic agent 54 which thus activates the agent 54 and kills bacteria in the urine. In this manner, the passage of bacteria through the tubular section 30 and into the chamber 24 is minimized. Also, the adapter 18 minimizes the passage of bacteria into the catheter 16.

A second embodiment of an adapter in accordance with the present invention is illustrated in Figure 3, in which like reference numerals designate like parts. In this embodiment, the adapter 18 also has an outer tube 42 defining a chamber 56. The adapter 18 has an elongated cylindrical solid antiseptic agent 58 of the type previously discussed, with the agent 58 having a bore 60 extending therethrough. In use, the urine passes through the bore 60 activating the agent 58 and killing bacteria in a manner as previously described.

A third embodiment of an adapter in accordance with the present invention is illustrated in Figure 4, in which like reference numerals designate like parts. In this embodiment, the adapter 18 also has an outer tube 42 defining a chamber 56. The adapter 18 has a sheet 62, such as paper, wound into a roll and defining a bore 64 extending therethrough.

The sheet 62 has a coating of an antiseptic agent as previously discussed on a surface of the sheet 62, such that urine passing through the sheet 62 activates the antiseptic agent on the sheet 62 in order to kill bacteria in a manner as previously discussed.

A fourth embodiment of an adapter in accordance with the present invention is illustrated in Figure 5, in which like reference numerals designate like parts. In this embodiment, the adapter 18 has an outer tube 42 defining a chamber 56. The adapter 18 has an elongated generally cylindrical solid antiseptic agent 66 of the type previously discussed received in the chamber 56, with at least a portion of the agent 66 being spaced from the tube 42. In use, urine drains around the agent 66 activating the agent 66 and killing bacteria in the urine in a manner as previously discussed.

A fifth embodiment of an adapter in accordance with the present invention is illustrated in Figure 6, in which like reference numerals designate like parts. In this embodiment, the adapter 18 also has an outer tube 42 defining a chamber 56. The adapter 18 has a vial 68 with walls of liquid previous material, such as cellulose paper. The vial has a cap or stopper 70 received in an open end of the vial 68 in order to close the vial 68. As shown, the vial 68 has a solid antiseptic agent 72, preferably in particulate form, received in the vial 68. In use, urine passes into the chamber 56 and through the walls of the vial 68, and the agent 72 leaches through the vial walls 68 in order to kill bacteria in the urine in a manner as previously discussed. In this embodiment, a suitable antiseptic agent 72 is. povidone iodine powder.

Claims

1. A dispenser for antiseptic material affording a container for antiseptic with antiseptic therein and an inlet to and an outlet from the said container, means being provided in the said container for locating the antiseptic therein in such a way as to afford a flow path for fluid between the inlet and the outlet, fluid flowing therebetween coming into contact with said antiseptic.

2. A dispenser as claimed in Claim 1 in which the cross-section of the flow path is at least as great as that of the inlet or outlet so as to avoid the dispenser producing any hold up of liquid.

3. A dispenser as claimed in Claim 1 or Claim 2 in which the flow path comprises a straight duct having a diameter substantially that of the inlet.

4. A dispenser as claimed in Claim 1, 2 or 3 which is cylindrical in form and has opposed spigots at each end which are inline and afford the inlet and outlet.

5. A dispenser as claimed in Claim 4 in which at least one of the spigots is in the form of a removable cap whereby the antiseptic can be renewed.

6. A dispenser as claimed in any one of Claims 1 to 5 comprising: an outer tube; an inner tube defining a cavity between the inner and outer tube and a flow path, the said inner tube having a plurality of openings extending therethrough placing the flow path in communication with the said cavity; and a solid antiseptic agent in said cavity.

7. A dispenser as claimed in any one of Claims 1 to 5 comprising: a tube defining a chamber; and an elongated solid antiseptic agent received in the chamber, the said agent having a bore extending therethrough as the said flow path.

8. A dispenser as claimed in Claim 7 in which the said agent is generally cylindrical.

9. A dispenser as claimed in any one of Claims 1 to 5 comprising: a tube defining a chamber; and a sheet wound into a roll and received in the chamber, the said sheet having a coating of an antiseptic agent.

10. A dispenser as claimed in Claim 9 in which the wound sheet defines a bore extending therethrough as the said flow path.

11. A dispenser as claimed in any one of Claims 1 to 5 comprising: a tube defining a chamber; and an elongated solid antiseptic agent received in the chamber, with at least a portion of the agent being spaced from the tube to permit passage of liquid therethrough, around the outside of the antiseptic agent the said space constituting the said flow path.

12. A dispenser as claimed in Claim 11 in which the said agent is generally cylindrical.

13. A dispenser as claimed in any one of Claims 1 to 5 comprising: a tube defining a chamber; a vial received in the chamber and having liquid pervious walls; a cap releasably closing the vial; and a solid antiseptic agent received in the vial, the space between the chamber and the vial constituting the said flow path.

14. A dispenser as claimed in Claim 13 in which the said agent is in particulate form.

15. A dispenser as claimed in Claim 13 or Claim 14 in which the vial wall is constructed from cellulose paper.

16. An adapter, comprising: an outer tube; an inner tube defining a cavity between the inner and outer tube, the said inner tube having a plurality of openings extending there- through; and a solid antiseptic agent in said cavity.

17. An adapter, comprising: a tube defining a chamber; and an elongated solid antiseptic agent received in the chamber, the said agent having a bore extending therethrough.

18. An adapter as claimed in Claim 17 in which the said agent is generally cylindrical.

19. An adapter, comprising: a tube defining a chamber; and a sheet wound into a roll and received in the chamber, said sheet having a coating of an antiseptic agent.

20. An adapter as claimed in Claim 19 in which the wound sheet defines a bore extending therethrough.

21. An adapter, comprising: a tube defining a chamber; and an elongated solid antiseptic agent received in the chamber, with at least a portion of the agent being spaced from the tube to permit passage of liquid therethrough.

22. An adapter as claimed in Claim 21 in which the said agent is generally cylindrical.

23. An adapter, comprising: a tube-defining a chamber; a vial received in the chamber ahd having liquid pervious walls; a cap releasably closing the vial; and a solid antiseptic agent received in the vial.

24. An adapter as claimed in Claim 23 in which the said agent is in a particulate form.

25. An adapter as claimed in Claim 23 or Claim 24 in which the vial wall is constructed from cellulose paper.

26. A dispenser or adapter as claimed in Claim 1 substantially as specifically described herein with reference to any one of Figures 2 to 6.

27. A receptacle having a chamber, ahd a drainage tube communicating with the chamber, a dispenser or adapter as claimed in any one of Claims 1 to 26 being connected to an upstream portion of the drainage tube.

28. A receptacle having a chamber, and a tubular section communicating with a lower portion of the chamber, a dispenser or adapter as claimed in any one of Claims 1 to 26 being connected to the tubular section.

29. A receptacle as claimed in Claim 27 or Claim 28 substantially as specifically described herein with reference to Figure 1 and any one of Figures 2 to 6.