WO2022241485A1 - Wound irrigation and/or aspiration device - Google Patents

Wound irrigation and/or aspiration device Download PDF

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Publication number
WO2022241485A1
WO2022241485A1 PCT/ZA2021/050032 ZA2021050032W WO2022241485A1 WO 2022241485 A1 WO2022241485 A1 WO 2022241485A1 ZA 2021050032 W ZA2021050032 W ZA 2021050032W WO 2022241485 A1 WO2022241485 A1 WO 2022241485A1
Authority
WO
WIPO (PCT)
Prior art keywords
perforations
wound
tubing
facing side
port
Prior art date
Application number
PCT/ZA2021/050032
Other languages
French (fr)
Inventor
Chrysis SOFIANOS
Original Assignee
Sofianos Chrysis
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sofianos Chrysis filed Critical Sofianos Chrysis
Priority to PCT/ZA2021/050032 priority Critical patent/WO2022241485A1/en
Publication of WO2022241485A1 publication Critical patent/WO2022241485A1/en

Links

Classifications

    • A61F13/05—
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/90—Negative pressure wound therapy devices, i.e. devices for applying suction to a wound to promote healing, e.g. including a vacuum dressing
    • A61M1/91—Suction aspects of the dressing
    • A61M1/915—Constructional details of the pressure distribution manifold
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/90—Negative pressure wound therapy devices, i.e. devices for applying suction to a wound to promote healing, e.g. including a vacuum dressing
    • A61M1/92—Negative pressure wound therapy devices, i.e. devices for applying suction to a wound to promote healing, e.g. including a vacuum dressing with liquid supply means

Definitions

  • the invention is in the field of medical devices.
  • the invention relates to a wound care device for the irrigation and/or aspiration of a wound.
  • Dressings are soaked in the fluid to be supplied and these wet dressings are applied to the wound.
  • a wound aspiration and/or irrigation device having a hollow body with at least a wound facing side and having one or more port for fluid flow into and out of the body, and one or more tubing connector for connection of the one or more port to a liquid supply or for connection to a removal means, wherein the hollow body has perforations directed towards the wound facing side thereof for fluid flow therethrough, wherein, in use, l fluid flows in either chosen direction through the one or more tubing connector and through the perforations and the hollow body.
  • the perforations may be micro perforations.
  • the body may be in the form of a double spiral coil of perforated tubing.
  • the port may be an inlet or an outlet.
  • two ports may be included allowing instillation via the one port and aspiration via the second port.
  • micro perforations may be directed towards one side of the double spiral coil.
  • micro perforations may be distributed over the surface of the body where fluid can flow through the perforation in any direction.
  • the device may be in the form of a moulded or cast unitary body having a double coil tube like channel therein with micro perforations on one or more of an upper and lower surface thereof.
  • double spiral coil may also be known by the description, pancake coil.
  • the body may be made of a plastics material, natural rubber, and a silicone material or the like.
  • the body may be made of polyethylene, polyvinyl chloride, Silicone, SilasticTM, or other similar material.
  • the connector may be a luer lock, for example, a female luer lock.
  • the perforations may be larger towards the periphery of the wound facing side and smaller towards the centre thereof.
  • the perforations may radiate from a central zone of the would facing side towards its periphery.
  • the perforations may be distributed over the wound facing side.
  • the perforations may be from 50 to 500 micrometers in diameter.
  • the tubing may have a nominal diameter of from 1 mm to 5mm.
  • the tubing may be 90cm in length.
  • the spiral coil may be from 2cm to 30cm in diameter.
  • a device including a means to irrigate a wound with fluid products via a perforated hollow body having a wound facing surface.
  • the hollow body of the device may be in the form of a coiled plastic delivery mechanism (forward flow).
  • the invention may allow for the same tubing to be used to aspirate fluid from the wound (reverse flow).
  • a dressing which includes a wound aspiration and/or irrigation device incorporated as described above.
  • the device may either be included during the manufacturing process of multi-layered dressings or alternately be placed as a separate layer as part of a dressing and sealed with a secondary dressing.
  • a syringe such as a standard medical syringe
  • fluid is infused into the wound. This may also be achieved by any administration device that fits the luer port. The same port is used to aspirate fluid back.
  • Luer lock fittings are securely joined by means of a tabbed hub on the female fitting which screws into threads in a sleeve on the male fitting.
  • the Luer lock fitting can be occluded with a standard male Luer lock cap.
  • Figure 1 shows a wound aspiration and/or irrigation device having a double spiral coil of perforated tubing having an inlet and an outlet and a tubing connector for connection to a liquid supply or removal means at a central zone thereof;
  • Figure 2 shows a wound aspiration and/or irrigation device having a double spiral coil of perforated tubing having an inlet and an outlet and a tubing connector for connection to a liquid supply or removal means at one end thereof;
  • FIG 3 is similar to Figure 1 except that two female Luer lock connectors are provided at each opening end of the tubing.
  • Figure 4 shows a wound aspiration and/or irrigation device having a perforated wound facing side of a wound aspiration and/or irrigation device having a hollow body with two Luer port fittings for fluid flow into and out of the body;
  • Figure 5 shows a wound aspiration and/or irrigation device having the hollow body of Figure 4 with one Luer port fitting for fluid flow into and out of the body;
  • Figure 6 shows a perforated wound facing side of a wound aspiration and/or irrigation device having a hollow body.
  • a wound aspiration and/or irrigation device 10 has a double spiral coil 12 of perforated plastic tubing 14 of 5cm diameter having an inlet 16 and an outlet 18 and a tubing connector 20 on the side at an open end of the tubing is shown.
  • the connector is for connection to a liquid supply or removal and is in the form of a Luer Lock.
  • the perforations 22 are micro perforations of 50 micrometers which allow irrigation or aspiration so that fluid may flow in either direction through the tubing connector 20 and through the double spiral coil 12 of perforated tubing 14 to or from the wound.
  • micro perforations are distributed over the surface of the tubing where fluid can flow through the perforation in any direction.
  • a syringe (not shown), such as a standard medical syringe, is attached to the female Luer lock of the tubing and fluid is infused into the wound.
  • the same Luer lock is used to aspirate fluid back.
  • the tubing has a nominal diameter of from 1mm to 5mm.
  • the tubing is 90cm in length.
  • the spiral coil is from 2cm to 30cm in diameter.
  • the tubing 14 may be made of polyethylene, polyvinyl chloride, silicone elastomer such as SilasticTM, or other similar material.
  • FIG. 3 is again similar to Figure 2 except that two female Luer lock connectors 24, 26 are provided at each opening end of the tubing 14.
  • a device 30 for aspiration and/or irrigation of a wound of a patient has a hollow body 32 made of polyethylene, polyvinyl chloride, or SilasticTM with at least a wound facing side 34 having perforations 36.
  • the device 30 has one or two ports 38, 40 for fluid flow into and out of the body i.e. to or from the wound. Each port has a tubing connector for connection to a liquid supply for irrigation or for connection to a suction or other removal means for aspiration.
  • the hollow body 32 of the device 30 has perforations 36 directed towards the wound facing side 34 for fluid flow therethrough, wherein, in use, fluid flows in either chosen direction through the tubing connector and through the perforations.
  • the device 30 as shown is in the form of a moulded or cast unitary body 32 having perforations 36 on the wound facing surface 34 thereof.
  • the perforations are distributed over the wound facing surface of the body where fluid can flow through the perforation in any direction.
  • the perforations are larger towards the periphery 44 of the wound facing side 34 and smaller towards the centre 46 thereof.
  • the perforations 36 radiate from the central zone 46 of the wound facing side 34 towards its periphery 44.
  • the connector may be a male luer lock.

Abstract

The invention provides a device (30) for aspiration and/or irrigation of a wound of a patient. The device has a hollow body (32) made of polyethylene, polyvinyl chloride, or Silastic™ with at least a wound facing side (34) having perforations (36). The device (30) has one or two ports (38), (40) for fluid flow into and out of the body i.e. to or from the wound. Each port has a tubing connector for connection to a liquid supply for irrigation or for connection to a suction or other removal means for aspiration. The perforations (36) are directed towards the wound facing side (34) for fluid flow therethrough, wherein, in use, fluid flows in either chosen direction through the tubing connector and through the perforations. In the embodiment shown the perforations are larger towards the periphery (44) of the wound facing side (34) and smaller towards the centre (46) thereof. In another embodiment the body is in the form of a double spiral coil (12) of perforated plastic tubing (14) of 5cm diameter having an inlet (16) and an outlet (18) and a tubing connector (20) on the side at an open end of the tubing is shown.

Description

WOUND IRRIGATION AND/OR ASPIRATION DEVICE
Field of the Invention
The invention is in the field of medical devices. In particular the invention relates to a wound care device for the irrigation and/or aspiration of a wound.
Background to the Invention
As far as the inventor is presently aware, the only methods for supplying fluid to a wound, are either instillation via a negative-pressure wound therapy system, or soaked dressings.
Dressings, are soaked in the fluid to be supplied and these wet dressings are applied to the wound.
Other methods are far more complex and use a vacuum-therapy system with an instillation function but this is dependent on a machine.
Summary of the Invention
According to the first aspect of the invention, there is provided a wound aspiration and/or irrigation device having a hollow body with at least a wound facing side and having one or more port for fluid flow into and out of the body, and one or more tubing connector for connection of the one or more port to a liquid supply or for connection to a removal means, wherein the hollow body has perforations directed towards the wound facing side thereof for fluid flow therethrough, wherein, in use, l fluid flows in either chosen direction through the one or more tubing connector and through the perforations and the hollow body.
The perforations may be micro perforations.
The body may be in the form of a double spiral coil of perforated tubing.
The port may be an inlet or an outlet.
Where the body is a double spiral coil, two ports may be included allowing instillation via the one port and aspiration via the second port.
The micro perforations may be directed towards one side of the double spiral coil.
The micro perforations may be distributed over the surface of the body where fluid can flow through the perforation in any direction.
The device may be in the form of a moulded or cast unitary body having a double coil tube like channel therein with micro perforations on one or more of an upper and lower surface thereof.
The type of double spiral coil may also be known by the description, pancake coil.
The body may be made of a plastics material, natural rubber, and a silicone material or the like.
2 The body may be made of polyethylene, polyvinyl chloride, Silicone, Silastic™, or other similar material.
The connector may be a luer lock, for example, a female luer lock.
The perforations may be larger towards the periphery of the wound facing side and smaller towards the centre thereof.
The perforations may radiate from a central zone of the would facing side towards its periphery.
The perforations may be distributed over the wound facing side.
The perforations may be from 50 to 500 micrometers in diameter.
The tubing may have a nominal diameter of from 1 mm to 5mm.
The tubing may be 90cm in length.
The spiral coil may be from 2cm to 30cm in diameter.
Thus, according to a further aspect of the invention, there is provided a device including a means to irrigate a wound with fluid products via a perforated hollow body having a wound facing surface.
3 The hollow body of the device may be in the form of a coiled plastic delivery mechanism (forward flow). The invention may allow for the same tubing to be used to aspirate fluid from the wound (reverse flow). According to yet a further aspect of the invention, there is provided a dressing which includes a wound aspiration and/or irrigation device incorporated as described above.
The device may either be included during the manufacturing process of multi-layered dressings or alternately be placed as a separate layer as part of a dressing and sealed with a secondary dressing.
In use, a syringe, such as a standard medical syringe, is attached to the port and fluid is infused into the wound. This may also be achieved by any administration device that fits the luer port. The same port is used to aspirate fluid back.
It is thus believed to an advantage of the invention that it provides the ability to add fluid products, such as cleaning solutions, antibiotics etc to a wound. A further advantage is being able to aspirate fluid that is already in the wound.
It should be borne in mind that Luer lock fittings are securely joined by means of a tabbed hub on the female fitting which screws into threads in a sleeve on the male fitting.
The Luer lock fitting can be occluded with a standard male Luer lock cap.
4 Description of Embodiments of the Invention
The invention may be described with reference to the accompanying drawings, however, the invention is not limited to these embodiments and there are and will be other embodiments thereof which differ in configuration but function substantially in accordance with what has been described above and which fall within the scope of this invention.
In the Figures,
Figure 1 shows a wound aspiration and/or irrigation device having a double spiral coil of perforated tubing having an inlet and an outlet and a tubing connector for connection to a liquid supply or removal means at a central zone thereof; Figure 2 shows a wound aspiration and/or irrigation device having a double spiral coil of perforated tubing having an inlet and an outlet and a tubing connector for connection to a liquid supply or removal means at one end thereof;
Figure 3 is similar to Figure 1 except that two female Luer lock connectors are provided at each opening end of the tubing.
Figure 4 shows a wound aspiration and/or irrigation device having a perforated wound facing side of a wound aspiration and/or irrigation device having a hollow body with two Luer port fittings for fluid flow into and out of the body;
Figure 5 shows a wound aspiration and/or irrigation device having the hollow body of Figure 4 with one Luer port fitting for fluid flow into and out of the body; and
5 Figure 6 shows a perforated wound facing side of a wound aspiration and/or irrigation device having a hollow body.
In Figure 2, a wound aspiration and/or irrigation device 10 has a double spiral coil 12 of perforated plastic tubing 14 of 5cm diameter having an inlet 16 and an outlet 18 and a tubing connector 20 on the side at an open end of the tubing is shown. The connector is for connection to a liquid supply or removal and is in the form of a Luer Lock.
The perforations 22 are micro perforations of 50 micrometers which allow irrigation or aspiration so that fluid may flow in either direction through the tubing connector 20 and through the double spiral coil 12 of perforated tubing 14 to or from the wound.
The micro perforations are distributed over the surface of the tubing where fluid can flow through the perforation in any direction.
In use, a syringe (not shown), such as a standard medical syringe, is attached to the female Luer lock of the tubing and fluid is infused into the wound. The same Luer lock is used to aspirate fluid back.
In the example shown, which is not intended to limit the scope of the invention, the tubing has a nominal diameter of from 1mm to 5mm. The tubing is 90cm in length. The spiral coil is from 2cm to 30cm in diameter.
The tubing 14 may be made of polyethylene, polyvinyl chloride, silicone elastomer such as Silastic™, or other similar material.
6 In Figure 1 the female Luer lock tubing connector 24 for connection to a liquid supply or removal means is located at a central zone thereof.
Figure 3 is again similar to Figure 2 except that two female Luer lock connectors 24, 26 are provided at each opening end of the tubing 14.
In Figures 4 to 6, there is shown a device 30 for aspiration and/or irrigation of a wound of a patient. The device has a hollow body 32 made of polyethylene, polyvinyl chloride, or Silastic™ with at least a wound facing side 34 having perforations 36. The device 30 has one or two ports 38, 40 for fluid flow into and out of the body i.e. to or from the wound. Each port has a tubing connector for connection to a liquid supply for irrigation or for connection to a suction or other removal means for aspiration. The hollow body 32 of the device 30 has perforations 36 directed towards the wound facing side 34 for fluid flow therethrough, wherein, in use, fluid flows in either chosen direction through the tubing connector and through the perforations.
The device 30 as shown is in the form of a moulded or cast unitary body 32 having perforations 36 on the wound facing surface 34 thereof. The perforations are distributed over the wound facing surface of the body where fluid can flow through the perforation in any direction. In the embodiment shown the perforations are larger towards the periphery 44 of the wound facing side 34 and smaller towards the centre 46 thereof. The perforations 36 radiate from the central zone 46 of the wound facing side 34 towards its periphery 44.
The connector may be a male luer lock.
7

Claims

Claims
1. A wound aspiration and/or irrigation device having a hollow body with at least a wound facing side and having one or more port for fluid flow into and out of the body, and one or more tubing connector for connection of the one or more port to a liquid supply or for connection to a removal means, wherein the hollow body has perforations directed towards the wound facing side thereof for fluid flow therethrough, wherein, in use, fluid flows in either chosen direction through the one or more tubing connector and through the perforations and the hollow body.
2. A device as claimed in claim 1, wherein the perforations are micro perforations.
3. A device as claimed in claim 1 or claim 2, wherein the body is in the form of a double spiral coil of perforated tubing.
4. A device as claimed in any one of the preceding claims, wherein the port is an inlet or an outlet.
5. A device as claimed in any one of the preceding claims, wherein where the body is a double spiral coil, two ports are included allowing irrigation via the one port and aspiration via the second port.
6. A device as claimed in claims 5, wherein the micro perforations are directed towards one side of the double spiral coil.
8
7. A device as claimed in claim 2, wherein the micro perforations are distributed over the surface of the body where fluid can flow through the perforation in any direction.
8. A device as claimed in claim 2, which is in the form of a moulded or cast unitary body having a double coil tube like channel therein with micro perforations on one or more of an upper and lower surfaces thereof.
9. A device as claimed in any one of the preceding claims, wherein the body is made of a material selected from plastics material, natural rubber, and a silicone material.
10. A device as claimed in claim 9, wherein the body is made of one or more materials selected from polyethylene, polyvinyl chloride, and Silicone.
11. A device as claimed in any one of the preceding claims, wherein the connector is a luer lock.
12. A device as claimed in any one of the preceding claims, wherein the perforations are larger towards the periphery of the wound facing side and smaller towards the centre thereof.
13. A device as claimed in any one of the preceding claims, wherein the perforations radiate from a central zone of the would facing side towards its periphery.
14. A device as claimed in any one of claims 1 to 11 , wherein the perforations are distributed over the wound facing side.
9
15. A device as claimed in any one of the preceding claims, wherein the perforations are from 50 to 500 micrometers in diameter.
16. A device as claimed in any one of claims 3 to 15, wherein the tubing has a nominal diameter of from 1 mm to 5mm.
17. A device as claimed in any one of claims 3 to 16, wherein the tubing is 90cm in length.
18. A device as claimed in any one of claims 3 to 17, wherein the spiral coil is from 2cm to 30cm in diameter.
19. A device as claimed in any one of the preceding claims, including a wound irrigation means with fluid products via a perforated hollow body having a wound facing surface.
20. A dressing which includes a device as claimed in any one of the preceding claims.
10
PCT/ZA2021/050032 2021-05-11 2021-05-11 Wound irrigation and/or aspiration device WO2022241485A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/ZA2021/050032 WO2022241485A1 (en) 2021-05-11 2021-05-11 Wound irrigation and/or aspiration device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/ZA2021/050032 WO2022241485A1 (en) 2021-05-11 2021-05-11 Wound irrigation and/or aspiration device

Publications (1)

Publication Number Publication Date
WO2022241485A1 true WO2022241485A1 (en) 2022-11-17

Family

ID=84029468

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/ZA2021/050032 WO2022241485A1 (en) 2021-05-11 2021-05-11 Wound irrigation and/or aspiration device

Country Status (1)

Country Link
WO (1) WO2022241485A1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2423019A (en) * 2005-02-09 2006-08-16 Ind Ltd Ak Wound dressing and wound treatment system including the wound dressing
WO2009070905A1 (en) * 2007-12-07 2009-06-11 Medela Holding Ag Wound cover connecting device
EP3056241A1 (en) * 2004-04-28 2016-08-17 Smith & Nephew PLC Apparatus for aspirating and irrigating the wounds

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3056241A1 (en) * 2004-04-28 2016-08-17 Smith & Nephew PLC Apparatus for aspirating and irrigating the wounds
GB2423019A (en) * 2005-02-09 2006-08-16 Ind Ltd Ak Wound dressing and wound treatment system including the wound dressing
WO2009070905A1 (en) * 2007-12-07 2009-06-11 Medela Holding Ag Wound cover connecting device

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