WO2023287371A1 - Surgical instrument separating the tissues by preserving the nerves in spine surgery - Google Patents

Surgical instrument separating the tissues by preserving the nerves in spine surgery Download PDF

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Publication number
WO2023287371A1
WO2023287371A1 PCT/TR2021/050731 TR2021050731W WO2023287371A1 WO 2023287371 A1 WO2023287371 A1 WO 2023287371A1 TR 2021050731 W TR2021050731 W TR 2021050731W WO 2023287371 A1 WO2023287371 A1 WO 2023287371A1
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WO
WIPO (PCT)
Prior art keywords
nerve
connective tissue
foot
tissues
surgical instrument
Prior art date
Application number
PCT/TR2021/050731
Other languages
French (fr)
Inventor
İsmail BOZKURT
Original Assignee
Bozkurt Ismail
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 Bozkurt Ismail filed Critical Bozkurt Ismail
Publication of WO2023287371A1 publication Critical patent/WO2023287371A1/en

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/32—Surgical cutting instruments
    • A61B17/320016—Endoscopic cutting instruments, e.g. arthroscopes, resectoscopes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/32—Surgical cutting instruments
    • A61B2017/320044—Blunt dissectors
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/32—Surgical cutting instruments
    • A61B2017/320056—Tunnelers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/08—Accessories or related features not otherwise provided for
    • A61B2090/0801—Prevention of accidental cutting or pricking
    • A61B2090/08021—Prevention of accidental cutting or pricking of the patient or his organs

Definitions

  • the invention relates to, in general, a surgical instrument that separates the tissues preserving the nerves in spine surgery.
  • Tissues are currently being dissected by using the available surgical instruments such as the dissector (tissue separator), the nerve hook, etc.
  • the underlying nerve or dura may be damaged when lifting the ligamentum flavum.
  • using sharp instruments such as scalpel etc. may lead to complications.
  • Ligamentum flavum and the underlying nerve course very closely. They are generally adherent to each other.
  • this attached and generally thickened connective tissue is removed and both the entrapment of the below nerve is relaxed and, if required, the herniated tissue between two spines is reached and removed.
  • rupture of the dura membrane protecting the spine or the underlying nerve root may occur while removing the ligamentum flavum.
  • the present invention relates to a surgical instrument that meets the requirements mentioned above, eliminates all disadvantages and brings some additional advantages.
  • the main aim of the invention is to provide a surgical instrument that gets under the connective tissue over the nerve (lig. flavum) and dissects the adherences between the connective tissue and prevent the damages to the sensitive neural tissues by separating and dissecting the connective tissue on the nerve.
  • nerve lig. flavum
  • One aim of the invention is to provide a surgical instrument that is blunt on the bottom and sharp on the top.
  • Another aim of the invention is to provide a surgical instrument that will decrease the risk of complications during the surgery.
  • Figure 1 is the isometric view of the flavator of the invention.
  • the flavator (1) With the flavator (1), only one surgical instrument is used to get under the connective tissue on the nerve and the adherences between the nerve and the connective tissue are opened. As the bottom part (3.1) and the side part (3.2) on the foot (3) of the flavator (1) are blunt, the possibility of these to damage the sensitive tissues is low. Subsequently, the connective tissue is separated with the help of the cutter (4) on the foot (3) of the Flavator (1) that is moved caudally holding it from its handle (2). The ligamentum flavum is easily dissected by protecting the underlying nerve root and dura and accelerating the discectomy surgery, which is the most commonly implemented procedure in spine surgery, and reducing the complication risk is aimed.
  • the foot width (d) of the flavator (1) needs to be as small as to be able to enter between ligamentum flavum and the nerve root, preferably smaller than 10 mm, and the points that will contact the nerve need to be blunt.
  • the cutter (4) on the back of the foot (3) part of the instrument needs to be sharp enough to be able to open the callused connective tissue easily, rapidly and with one move.

Landscapes

  • Health & Medical Sciences (AREA)
  • Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biomedical Technology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Engineering & Computer Science (AREA)
  • Orthopedic Medicine & Surgery (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)
  • Surgical Instruments (AREA)

Abstract

The invention relates to a flavator (1) that helps to open the adherences between the nerve and the connective tissue by getting under the connective tissue on the nerve. The feature of the invention is that it comprises at least one foot (3) integrated with the handle (2) part and used to separate the connective tissue on the nerve, at least one bottom part (3.1) and at least one side part (3.2) located on the said foot (3) and designed in blunt form to prevent the damage to the sensitive tissues, at least one cutter (4) located on the back of the said foot (3) part and can cut the callused connective tissue easily.

Description

SURGICAL INSTRUMENT SEPARATING THE TISSUES BY PRESERVING THE
NERVES IN SPINE SURGERY
TECHNICAL FIELD
The invention relates to, in general, a surgical instrument that separates the tissues preserving the nerves in spine surgery.
PRIOR ART
Today, many surgical instruments are used in the surgeries. These are as of great importance for the surgeons as they are for the patient.
In the spine surgeries of the prior art, there is no specific surgical instrument that dissects the tissues (separating different tissues protecting the integrity of these) while preserving the underlying nerve. Tissues are currently being dissected by using the available surgical instruments such as the dissector (tissue separator), the nerve hook, etc.
As there is no specific instrument for this purpose in the state of the art, the underlying nerve or dura may be damaged when lifting the ligamentum flavum. As it is a risky area, using sharp instruments such as scalpel etc. may lead to complications. Ligamentum flavum and the underlying nerve course very closely. They are generally adherent to each other. However, in surgeries of herniated discs and spinal stenosis, this attached and generally thickened connective tissue is removed and both the entrapment of the below nerve is relaxed and, if required, the herniated tissue between two spines is reached and removed. Yet, due to this adherence and the thickening of the tissue, rupture of the dura membrane protecting the spine or the underlying nerve root may occur while removing the ligamentum flavum. Since there is no instrument developed to prevent this, the surgeon generally uses both hands while slightly lifting the ligamentum flavum from its end with the nerve hook with one hand, tries to place there a cotton pad with the other hand. If the nerve could have been separated from the connective tissue, the surgeon would try to pass the tissue with the other hand using either Kerrison Rongeur or with the help of a scalpel. This would not only increase complication rate, but would also occupy both hands of the surgeon.
As a result, improvements are made in surgical instruments, therefore, there is a need for new structures that will eliminate the mentioned disadvantages and bring solutions to existing systems.
THE AIM OF THE INVENTION
The present invention relates to a surgical instrument that meets the requirements mentioned above, eliminates all disadvantages and brings some additional advantages.
The main aim of the invention is to provide a surgical instrument that gets under the connective tissue over the nerve (lig. flavum) and dissects the adherences between the connective tissue and prevent the damages to the sensitive neural tissues by separating and dissecting the connective tissue on the nerve.
One aim of the invention is to provide a surgical instrument that is blunt on the bottom and sharp on the top.
Another aim of the invention is to provide a surgical instrument that will decrease the risk of complications during the surgery.
The structural and characteristic features and all the advantages of the invention will be understood more clearly with the help of the figures given below and the detailed description written with reference to these figures. Therefore, the assessment needs to be made considering these figures and the detailed description.
DESCRIPTION OF DRAWINGS
For the embodiment of the present invention and its advantages with the additional elements to be best understood, it should be assessed with the figures explained below. Figure 1 is the isometric view of the flavator of the invention.
REFERENCE NUMBERS
1. Flavator
2. Handle
3. Foot
3.1 Bottom part
3.2 Side part
4. Cutter
D: Foot width
DETAILED DESCRIPTION OF THE INVENTION
In this detailed description, the preferred embodiments of the flavator (1) of the invention is described with no limiting effect and in order for the subject to be better understood.
With the flavator (1), only one surgical instrument is used to get under the connective tissue on the nerve and the adherences between the nerve and the connective tissue are opened. As the bottom part (3.1) and the side part (3.2) on the foot (3) of the flavator (1) are blunt, the possibility of these to damage the sensitive tissues is low. Subsequently, the connective tissue is separated with the help of the cutter (4) on the foot (3) of the Flavator (1) that is moved caudally holding it from its handle (2). The ligamentum flavum is easily dissected by protecting the underlying nerve root and dura and accelerating the discectomy surgery, which is the most commonly implemented procedure in spine surgery, and reducing the complication risk is aimed.
To achieve this, the foot width (d) of the flavator (1) needs to be as small as to be able to enter between ligamentum flavum and the nerve root, preferably smaller than 10 mm, and the points that will contact the nerve need to be blunt. But the cutter (4) on the back of the foot (3) part of the instrument needs to be sharp enough to be able to open the callused connective tissue easily, rapidly and with one move.

Claims

1. A flavator (1) for opening the adherences between the nerve and the connective tissue by getting under the connective tissue on the nerve, characterized in that; it comprises: at least one foot (3) integrated with the handle (2) and used to separate the connective tissue on the nerve, at least one bottom part (3.1) and at least one side part (3.2) located on the said foot (3) and designed in blunt form to prevent the damage to the sensitive tissues, at least one cutter (4) which is located on the back of the said foot (3) part and can cut the callused connective tissue easily.
2. A flavator (1) according to Claim 1, characterized in that; the foot width (d) is smaller than 10mm.
PCT/TR2021/050731 2021-07-14 2021-07-14 Surgical instrument separating the tissues by preserving the nerves in spine surgery WO2023287371A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR2021/011518 2021-07-14
TR2021011518 2021-07-14

Publications (1)

Publication Number Publication Date
WO2023287371A1 true WO2023287371A1 (en) 2023-01-19

Family

ID=84920293

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/TR2021/050731 WO2023287371A1 (en) 2021-07-14 2021-07-14 Surgical instrument separating the tissues by preserving the nerves in spine surgery

Country Status (1)

Country Link
WO (1) WO2023287371A1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2516107Y (en) * 2002-01-18 2002-10-16 刘培亭 Yellow ligament incision knife
CN202207180U (en) * 2011-05-27 2012-05-02 曾岩 Acute nerve dissector
CN210903239U (en) * 2019-05-14 2020-07-03 上海长海医院 Ligament is disconnected device for spinal surgery

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2516107Y (en) * 2002-01-18 2002-10-16 刘培亭 Yellow ligament incision knife
CN202207180U (en) * 2011-05-27 2012-05-02 曾岩 Acute nerve dissector
CN210903239U (en) * 2019-05-14 2020-07-03 上海长海医院 Ligament is disconnected device for spinal surgery

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