GB2596357A - Total intravenous anaesthesia compatible surgical drape - Google Patents

Total intravenous anaesthesia compatible surgical drape Download PDF

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Publication number
GB2596357A
GB2596357A GB2009835.6A GB202009835A GB2596357A GB 2596357 A GB2596357 A GB 2596357A GB 202009835 A GB202009835 A GB 202009835A GB 2596357 A GB2596357 A GB 2596357A
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GB
United Kingdom
Prior art keywords
surgical drape
tiva
anaesthesia
patients
cannula
Prior art date
Legal status (The legal status 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 status listed.)
Pending
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GB2009835.6A
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GB202009835D0 (en
Inventor
James Howells Mark
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Individual
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Individual
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Publication date
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Priority to GB2009835.6A priority Critical patent/GB2596357A/en
Publication of GB202009835D0 publication Critical patent/GB202009835D0/en
Publication of GB2596357A publication Critical patent/GB2596357A/en
Pending legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B46/00—Surgical drapes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B46/00—Surgical drapes
    • A61B46/20—Surgical drapes specially adapted for patients
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B46/00—Surgical drapes
    • A61B46/20—Surgical drapes specially adapted for patients
    • A61B46/23—Surgical drapes specially adapted for patients with means to retain or hold surgical implements
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B46/00—Surgical drapes
    • A61B46/20—Surgical drapes specially adapted for patients
    • A61B46/27—Surgical drapes specially adapted for patients tubular, e.g. for arms or legs
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B46/00—Surgical drapes
    • A61B46/20—Surgical drapes specially adapted for patients
    • A61B2046/205—Adhesive drapes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B46/00—Surgical drapes
    • A61B46/20—Surgical drapes specially adapted for patients
    • A61B46/23—Surgical drapes specially adapted for patients with means to retain or hold surgical implements
    • A61B2046/234—Surgical drapes specially adapted for patients with means to retain or hold surgical implements with means for retaining a catheter

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  • Health & Medical Sciences (AREA)
  • Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Abstract

A TIVA (Total Intra-Venous Anaesthesia) compatible Surgical Drape comprising a viewing window (Label 2) made of a transparent medical grade polymer used to observe an anaesthetised patients IV (intravenous) cannula access, in order to visualise the on-going and uninterrupted infusion of anaesthetic drugs. The TIVA compatible Surgical drape incorporates a transparent strip of material that otherwise replaces an opaque section of surgical drape on either one or both sides. The viewing window allows the safer delivery of intravenous anaesthetic drugs as it likely to reduce to the incidence of inadvertent disconnection going un-noticed by the anaesthetist.

Description

Patent Application Title T1VA (Total Intravenous Anaesthesia) compatible Surgical Drape
Description
Currently Anaesthesia is maintained during theatre primarily by anaesthetic vapours being delivered to patients via an airway device. Anaesthetists measure the concentration of anaesthetic gases being delivered to the patient and measure the concentration of anaesthetic gas being exhaled by the patient using infa-red absorption techniques. This allows breath-by-breath analysis of the concentration of anaesthetic gas being present in the patient's lungs and therefore the depth of anaesthetic can be estimated by these measurements. The use of the MAC (Minimum Alveolar Concentration) is the cornerstone of determining depth of anaesthesia. Modern anaesthetic machines will alarm if the MAC value falls too low and anaesthetists therefore have a good warning system to intervene if the general anaesthetic being delivered isn't sufficient preventing anaesthetic awareness, which is a potential devastating complication of anaesthesia.
Recently there has been a huge surge in the use of T1VA (Total Intravenous Anaesthesia). This method of anaesthesia uses solely an Infusion of Propofol delivered to a patient to keep patients asleep. The rate of infusion is determined by an electronically controlled syringe pump that automatically adjusts the rate of infusion to try and target a mathematically derived 'imaginary' concentration level of Propofol in the patients blood; therefore keeping them asleep. There is currently no system that exists to measure the true concentration of Propofol in a patient's bloodstream on a 'live' basis unlike when anaesthesia is maintained with volatile gases. This makes awareness under anaesthesia more likely with a T1VA approach than with a gas approach. T1VA is safe providing that the infusion of Propofol is continuously being delivered to the patient.
One of the major fears with TIVA is the risk of inadvertent disconnection of the cannula that the infusion is connected to. There is also the risk that the cannula tissues or itself becomes dislodged leading to Propofol not being delivered directly into the patient's vein. During theatre the surgical drapes cover the patient's Intravenous access making monitoring of the site difficult leading to an increased risk of complications. Label 5 shows a diagrammatic representation of a patient's arm and shows the area that would be visible to anaesthetist as a result of the viewing window (Label 2). There is often a lot of activity around the theatre table and it is not uncommon for the cannula to be knocked and rendered unusable. There is no universal warning system that can detect disconnection of the infusion in practice currently.
During Surgery there is often an inability to view the patients cannula to see that is still working due to presence of surgical drapes, this presents a major safety hazard if T1VA is going to be used. Most infusion pumps cannot determine that a line has been disconnected and will continue to infuse the Propofol into the bed/sheets or subcutaneously with the anaesthetist unaware that the patient is not receiving the anaesthetic drug. The first sign that the cannula is disconnected can actually be the patient starting to move on the operating table.
Solution I propose that surgical drapes should come with a cannula-viewing window (Label 2) so that the anaesthetist can monitor the Patients Intravenous access.
The design would involve incorporating a strip on either side of surgical drapes made of a transparent medical grade Polymer creating a see through window that allows the Anaesthetist to view the Cannula during theatre. (Label 2) Figure 4 shows how the TIVA drape would be placed over the patient in a theatre scenario to allow visualisation of the patients arm; compared to the current set up; represented in Figure 2. By being able to see the patients arm and subsequently the patients Intravenous Cannula allows accidental dislodgement and blockage of the cannula can be identified more readily and at an earlier stage than it would otherwise have been detected.
The creation of two cannula viewing windows (As seen in Figure 3) allows visualisation of either the patients right or left arm, depending on which side the cannula is sited prior to theatre.
Current guidance regarding TIVA Currently the guidance regarding use of TIVA is that it is essential that the cannula site is monitored. Currently this is very difficult and presents a barrier that is stopping the more widespread adoption of TIVA anaesthesia. The AAGB1 (Association of Anaesthetists of Great Britain and Ireland) which set the standards for anaesthesia recommend that it is mandatory that the cannula is visualised during the use of TIVAl.Currently surgical drapes make this difficult and causes a lot of anaesthetists to abandon TIVA as an anaesthetic technique despite its inherent benefits. The TIVA Surgical drape provides a practical solution to this problem and can unlock the vast benefits of TIVA anaesthetic over the continued use of Volatile anaesthesia.

Claims (1)

  1. Claims Claim 1 A TIVA (Total Intravenous Anaesthesia) compatible surgical drape (figure 3) is a re-design of current surgical drapes that incorporates a transparent window into a Surgical Drape to allow the visualisation of a patients IV (Intra-Venous) Cannula; which is being used to infuse anaesthetic or analgesic agents during surgery.Claim 2 The TIVA (Total Intravenous Anaesthesia) compatible surgical drape according to claim 1, consists of two transparent windows (Label 2) to allow for the patients cannula to be viewed regardless of whether it is sited in a patients left or right limb. When the TIVA (Total Intravenous Anaesthesia) compatible Surgical Drape is draped over a patient it allows visualisation of the patients arm (Label 5) through two transparent window's (Label 2).
GB2009835.6A 2020-06-27 2020-06-27 Total intravenous anaesthesia compatible surgical drape Pending GB2596357A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2009835.6A GB2596357A (en) 2020-06-27 2020-06-27 Total intravenous anaesthesia compatible surgical drape

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2009835.6A GB2596357A (en) 2020-06-27 2020-06-27 Total intravenous anaesthesia compatible surgical drape

Publications (2)

Publication Number Publication Date
GB202009835D0 GB202009835D0 (en) 2020-08-12
GB2596357A true GB2596357A (en) 2021-12-29

Family

ID=71949707

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2009835.6A Pending GB2596357A (en) 2020-06-27 2020-06-27 Total intravenous anaesthesia compatible surgical drape

Country Status (1)

Country Link
GB (1) GB2596357A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5341821A (en) * 1991-12-30 1994-08-30 Boundary Healthcare Products Corporation Surgical drape and method of making a surgical drape
US5813407A (en) * 1997-05-27 1998-09-29 Busch; Michael C. Blanket with permeable window
US20160106511A1 (en) * 2014-10-16 2016-04-21 Barry university Surgical sterilization device and methods of use

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5341821A (en) * 1991-12-30 1994-08-30 Boundary Healthcare Products Corporation Surgical drape and method of making a surgical drape
US5813407A (en) * 1997-05-27 1998-09-29 Busch; Michael C. Blanket with permeable window
US20160106511A1 (en) * 2014-10-16 2016-04-21 Barry university Surgical sterilization device and methods of use

Also Published As

Publication number Publication date
GB202009835D0 (en) 2020-08-12

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