WO2026024203A1 - Dispositif d'insertion d'éponge pour thérapie vac dans une zone d'intérêt - Google Patents

Dispositif d'insertion d'éponge pour thérapie vac dans une zone d'intérêt

Info

Publication number
WO2026024203A1
WO2026024203A1 PCT/RU2025/050119 RU2025050119W WO2026024203A1 WO 2026024203 A1 WO2026024203 A1 WO 2026024203A1 RU 2025050119 W RU2025050119 W RU 2025050119W WO 2026024203 A1 WO2026024203 A1 WO 2026024203A1
Authority
WO
WIPO (PCT)
Prior art keywords
sponge
thread
drainage tube
area
interest
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
Application number
PCT/RU2025/050119
Other languages
English (en)
Russian (ru)
Inventor
Егор Владимирович БЛИНОВ
Александр Александрович СМИРНОВ
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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
Priority claimed from RU2024120554A external-priority patent/RU2855637C1/ru
Application filed by Individual filed Critical Individual
Publication of WO2026024203A1 publication Critical patent/WO2026024203A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • A61M25/00—Catheters; Hollow probes

Definitions

  • the invention relates to medical equipment. It is designed for inserting a flexible device into the area of interest (where the defect is) during the treatment of digestive anastomosis leaks using a vacuum aspiration system.
  • VACs Vacuum aspiration systems
  • a VAC consists of a nasogastric tube (drainage tube) with a polyurethane sponge attached to the distal end.
  • the sponge's size corresponds to the size of the defect/cavity.
  • a sponge insertion device containing a porous bioinert sponge with pore sizes of 400-600 ⁇ m for aspirating pathological discharge through an organ cavity and a drainage tube.
  • the sponge is secured to the end of the drainage tube with a thread, the knots of which are formed at the proximal and distal ends of the sponge.
  • the sponge is placed in a container made in the form of a soft, sealed silicone sheath, the open end of which is tightly tied with a thread.
  • the free end of the drainage stub is connected to a vacuum pump with a negative pressure of -200 mmHg. Air is removed, and the sponge, moistened with saline, is frozen in the sealed silicone sheath at -18°C for 25 minutes.
  • the sponge is orally inserted into the digestive tube under endoscopic control, positioned on the defect, and connected to a pressure of -125 mmHg. Moreover, every 3 days, 4-9 times in total, the sponge is replaced with a similar one [1].
  • a vacuum system for endoscopic vacuum therapy includes a vacuum pump, a vacuum drainage system, an outer tube assembly which is connected to the vacuum pump of the vacuum system on the low-pressure side and which has a fluid collecting element, an endoscope adapted for insertion into the outer tube assembly, and a probe connected to a pressure regulation unit of the vacuum system for measuring negative pressure.
  • the presented vacuum and endoscopic systems provide the possibility of performing endoscopic vacuum therapy of internal wounds. Sponge drains are suctioned to the intestinal mucosa using a vacuum applied to the sponge and are fixed by negative pressure at the site of placement.
  • the sponge can be adapted to requirements by cutting according to length and volume.
  • the sponge element can be grasped using clamping forceps, polyp clamps or loops and introduced orthogradely during endoscopic guidance.
  • the sponge element has notches on its outer surface for inserting a probe, which can be inserted between the intestinal wall and the sponge element during endoscopic system operation.
  • This additional probe can be used for enteral feeding, gastric emptying, or lavage.
  • a vacuum can be applied to the sponge element while the additional probe is inserted.
  • a device for introducing a sponge for VAC therapy into an area of interest comprises a porous polyurethane sponge 1 intended for aspiration of pathological discharge through an organ cavity, a drainage tube 2.
  • the sponge 1 is fixed at the end of the drainage tube 2. It comprises a flexible metal conductor 3 installed in the drainage tube 2; a silicone tube 4 intended for enveloping the compressed sponge 1, a thread 5 compressing the sponge, a knot 6 is made on the thread 5 that self-dissolves when pulling on the end 7 of the thread.
  • the technical result consists in installing a sponge for VAC therapy in the area of interest during the treatment of digestive anastomosis failure using a vacuum aspiration system, ensuring compression of the sponge throughout its entire volume.
  • the technical challenge is to ensure that the VAC therapy sponge is positioned in the area of interest.
  • a device for introducing a sponge for VAC therapy into the area of interest contains a porous polyurethane sponge designed to aspirate pathological discharge through the organ cavity and a drainage tube, the sponge being fixed to the end of the drainage tube. It is distinguished by a silicone tube designed to encircle the compressed sponge, a thread that compresses the sponge, the thread having a knot that dissolves when the end of the thread is pulled, and a flexible metal guidewire inserted into the drainage tube.
  • the proposed invention allows a compressed (reduced in volume) sponge to be moved along a guide wire toward the area of interest. Its transverse diameter allows for unrestricted insertion into the organ cavity, allowing for the treatment of digestive anastomosis leaks using a vacuum aspiration system.
  • the use of a thread with a self-dissolving knot allows for the sponge's volume to be reduced and released with a simple movement, increasing the sponge's volume in the defect area, either independently or by combining the thread's compression with that of the silicone tube.
  • Device for introducing a sponge for VAC therapy into the area of interest contains a porous polyurethane sponge 1, intended for aspiration of pathological discharge through the cavity of the organ, a drainage tube 2, the sponge 1 is fixed on the end of the drainage tube 2. It is distinguished in that it contains a flexible metal conductor 3, installed in the drainage tube 2; a silicone tube 4, intended to cover the compressed sponge 1, a thread 5, compressing the sponge, on the thread 5 a knot 6 is made that self-dissolves when pulling on the end 7 of the thread.
  • FIG. 1 On A diagram of a device for installing a sponge for VAC therapy in the area of interest is shown, shown in section. shows a compressed sponge mounted on a drainage tube with a conductor. shows a sponge compressed by a thread with a self-dissolving knot. Shown is a sponge compressed in a silicone tube.
  • Device for introducing a sponge for VAC therapy into the area of interest contains a porous polyurethane sponge 1, intended for aspiration of pathological discharge through the cavity of the organ, a drainage tube 2 (nasogastric tube), the sponge 1 is fixed on the end of the drainage tube 2.
  • a flexible metal conductor 3 is installed in the drainage tube 2.
  • the sponge 1 is installed in a silicone tube 4, intended to cover the compressed sponge 1.
  • the sponge 1 is compressed by means of a thread 5, wrapped along the outer surface of the sponge 1 along its length.
  • a knot 6 is made on the thread 5, which self-unravels when pulling on the end 7 of the thread 5.
  • the device is used to treat leaks of digestive anastomoses by connecting it to a vacuum pump.
  • the dimensions of sponge 1 correspond to the dimensions of the defect/cavity, or exceed it in size.
  • Silicone tube 4 can be made in the form of an Overtube sleeve.
  • the sponge determines the size of the defect and shape the sponge 1 to the size and shape of the defect.
  • sponge 1 is compressed ( ) along the entire perimeter of the outer lateral surface using silicone tube 4 and thread 5.
  • Sponge 1 is tied with thread 5, on which a self-dissolving knot 6 is formed, which unravels when pulling on end 7 of thread.
  • Silicone tube 4 or Overtube is introduced to the defect location using an endoscope.
  • Sponge 1 is inserted into silicone tube 4, the transverse dimension of which is smaller than the size of sponge 1, and pushed through, a flexible metal guide 3 in the form of a string is passed into drainage tube 2, guiding guide 3, sponge 1 is introduced through the organ cavity to the defect area. Sponge 1 is placed on the defect. Sponge 1 is unclenched by pulling it out of silicone tube 4 and unraveling thread 5 by pulling on end 7 of thread. Drainage tube 2 is connected to a source of negative pressure (vacuum pump), ensuring aspiration of pathological discharge from the defect through the organ cavity, to the outside.
  • a source of negative pressure vacuum pump
  • sponge 1 compressed (reduced in volume) by silicone tube 4 and/or thread 5 with self-dissolving knot 6, moves along the guide wire and is delivered to the area of interest.
  • Its transverse size (diameter) allows for its insertion into the organ cavity without restrictions related to anatomical features, for the treatment of digestive anastomosis leaks using a vacuum aspiration system.
  • Use of silicone tube 4 allows for a decrease in the volume of sponge 1 and its release, increasing the volume (transverse size) of the sponge in the defect area.
  • thread 5 with self-dissolving knot 6 allows for a decrease in the volume of the sponge and its release (by traction on the end of thread 7), increasing the volume (transverse size) of the sponge in the defect area, both independently and by combining compression by the thread with compression in the silicone tube.
  • the pore size of polyurethane sponge 1 is preferably between 200 ⁇ m and 1000 ⁇ m, with a pore size of 400 ⁇ m to 600 ⁇ m being particularly preferred.
  • the sponge can be tailored to suit specific requirements by cutting it to length and volume.
  • the device is used for sponge vacuum therapy to endoscopically place one or more fluid-collecting devices, such as sponge drains, into the intestinal lumen and secure them in place using a vacuum.
  • the sponge drains are suctioned to the intestinal mucosa using a vacuum applied to the sponge and are secured by negative pressure at the insertion site.
  • Diagnosis rectal cancer cT3N0M0.
  • Primary surgery anterior rectal resection.
  • VAC system placement the anastomotic site is identified approximately 2 cm from the anus.
  • a defect of 1/2 of the anastomosis circumference is identified, with a cavity up to 3.0 cm in diameter and approximately 18-20 cm deep, filled with detritus and fibrin.
  • a guidewire is inserted into the cavity through the endoscope's instrument channel.
  • a VAC system is installed and positioned along the guidewire under endoscopic control.
  • a device is used to insert the sponge.
  • Sponge 1 sized to match the size and shape of the defect, is secured to the end of drainage tube 2 (nasogastric tube).
  • sponge 1 is compressed along the entire perimeter of its outer lateral surface: sponge 1 is tied with thread 5, on which a self-dissolving knot 6 is formed, which unravels when end 7 of the thread is pulled; sponge 1 is inserted into silicone tube 4 (Overtube sleeve). , the transverse dimension of which is smaller than the size of sponge 1, and pushed it through, passing a flexible metal guide 3 in the form of a string into drainage tube 2. Guide 3 was guided, introducing sponge 1 through the organ cavity to the defect area. Sponge 1 was placed on the defect. Sponge 1 was released by pulling it out of silicone tube 4 and unraveling thread 5 by pulling on end 7 of thread.
  • Drainage tube 2 was connected to a vacuum pump, ensuring aspiration of pathological discharge from the defect through the organ cavity and outward. Negative pressure in the defect allows for the removal of wound secretions, eliminates tissue edema, promotes blood flow, improves microcirculation, and facilitates wound healing.
  • the device significantly reduces the time required for the procedure, reduces trauma to the mucous membranes, and allows for the installation of a sponge of the required diameter, increasing the effectiveness of vacuum therapy and shortening the patient's recovery period.
  • the claimed technical solution can be implemented using industrially produced devices and materials; its elements can be manufactured and assembled both in a handicraft manner and at modern industrial enterprises.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biophysics (AREA)
  • Pulmonology (AREA)
  • Engineering & Computer Science (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Hematology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • External Artificial Organs (AREA)

Abstract

L'invention concerne un dispositif d'insertion d'éponge pour thérapie VAC dans une zone d'intérêt, comprenant une éponge poreuse en polyuréthane 1 destinée à aspirer les sécrétions pathologiques à travers la cavité de l'organe, un tube de drainage 2, l'éponge étant fixée à l'extrémité du tube de drainage. Le dispositif est caractérisé en ce qu'il comprend un conducteur métallique flexible 3 disposé dans le tube de drainage 2, un tube en silicone 4 servant à entourer l'éponge comprimée 1, un fil 5 comprimant l'éponge, lequel fil 5 comprend une unité 6 d'auto-déploiement lors d'une traction sur l'extrémité 7 du fil. Il est ainsi possible d'installer l'éponge de thérapie VAC dans la zone d'intérêt lors du traitement de carence d'anastomoses digestives en utilisant un système d'aspiration sous vide afin d'assurer la compression de l'éponge sur tout le volume.
PCT/RU2025/050119 2024-07-22 2025-04-28 Dispositif d'insertion d'éponge pour thérapie vac dans une zone d'intérêt Pending WO2026024203A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
RU2024120554A RU2855637C1 (ru) 2024-07-22 Устройство введения губки для vac-терапии в зону интереса
RU2024120554 2024-07-22

Publications (1)

Publication Number Publication Date
WO2026024203A1 true WO2026024203A1 (fr) 2026-01-29

Family

ID=98565958

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/RU2025/050119 Pending WO2026024203A1 (fr) 2024-07-22 2025-04-28 Dispositif d'insertion d'éponge pour thérapie vac dans une zone d'intérêt

Country Status (1)

Country Link
WO (1) WO2026024203A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4909796A (en) * 1985-01-11 1990-03-20 Mitsuyuki Hagio Medical guiding microtubes
RU2562680C2 (ru) * 2011-03-11 2015-09-10 Ломанн Унд Раушер Гмбх Унд Ко. Кг Вакуумная система и эндоскопическая система для эндоскопической вакуум-терапии
US20150306287A1 (en) * 2014-04-25 2015-10-29 Steven Burdick Vacuum Wound Device
DE102014224012A1 (de) * 2014-11-25 2016-05-25 Aesculap Ag Medizinisches Produkt sowie medizinisches Kit zur Ableitung von pathologischen Fluidansammlungen
US20210260335A1 (en) * 2020-02-26 2021-08-26 Boston Scientific Scimed, Inc. Medical therapy systems and methods of using the same
US20240197980A1 (en) * 2021-04-06 2024-06-20 Ezriel Kornel Deployable sponge system

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4909796A (en) * 1985-01-11 1990-03-20 Mitsuyuki Hagio Medical guiding microtubes
RU2562680C2 (ru) * 2011-03-11 2015-09-10 Ломанн Унд Раушер Гмбх Унд Ко. Кг Вакуумная система и эндоскопическая система для эндоскопической вакуум-терапии
US20150306287A1 (en) * 2014-04-25 2015-10-29 Steven Burdick Vacuum Wound Device
DE102014224012A1 (de) * 2014-11-25 2016-05-25 Aesculap Ag Medizinisches Produkt sowie medizinisches Kit zur Ableitung von pathologischen Fluidansammlungen
US20210260335A1 (en) * 2020-02-26 2021-08-26 Boston Scientific Scimed, Inc. Medical therapy systems and methods of using the same
US20240197980A1 (en) * 2021-04-06 2024-06-20 Ezriel Kornel Deployable sponge system

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