CN111839622A - Nerve retractor - Google Patents
Nerve retractor Download PDFInfo
- Publication number
- CN111839622A CN111839622A CN202010735161.0A CN202010735161A CN111839622A CN 111839622 A CN111839622 A CN 111839622A CN 202010735161 A CN202010735161 A CN 202010735161A CN 111839622 A CN111839622 A CN 111839622A
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- CN
- China
- Prior art keywords
- nerve
- main body
- tongue
- body part
- root
- 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.)
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Links
- 210000005036 nerve Anatomy 0.000 title claims abstract description 63
- 230000004927 fusion Effects 0.000 abstract description 19
- 230000006378 damage Effects 0.000 abstract description 7
- 235000008331 Pinus X rigitaeda Nutrition 0.000 abstract description 3
- 235000011613 Pinus brutia Nutrition 0.000 abstract description 3
- 241000018646 Pinus brutia Species 0.000 abstract description 3
- 230000006837 decompression Effects 0.000 description 7
- 238000002513 implantation Methods 0.000 description 5
- 208000034693 Laceration Diseases 0.000 description 4
- 238000001356 surgical procedure Methods 0.000 description 4
- 230000007794 irritation Effects 0.000 description 3
- 201000010099 disease Diseases 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 206010061246 Intervertebral disc degeneration Diseases 0.000 description 1
- 208000028389 Nerve injury Diseases 0.000 description 1
- 208000031481 Pathologic Constriction Diseases 0.000 description 1
- 208000007103 Spondylolisthesis Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007850 degeneration Effects 0.000 description 1
- 208000018180 degenerative disc disease Diseases 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 208000021600 intervertebral disc degenerative disease Diseases 0.000 description 1
- 230000008764 nerve damage Effects 0.000 description 1
- 208000015122 neurodegenerative disease Diseases 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000036262 stenosis Effects 0.000 description 1
- 208000037804 stenosis Diseases 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/02—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors
- A61B17/0218—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors for minimally invasive surgery
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/02—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors
- A61B17/025—Joint distractors
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/02—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors
- A61B17/025—Joint distractors
- A61B2017/0256—Joint distractors for the spine
- A61B2017/0262—Joint distractors for the spine with a provision for protecting nerves
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
- Heart & Thoracic Surgery (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (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 the technical field of medical instruments and discloses a nerve retractor which comprises a strip-shaped main body part, a tongue part arranged at the front end of the main body part and a handle part arranged at the rear end of the main body part, wherein the main body part and the tongue part are both flat, and the width of the tongue part is smaller than that of the main body part. When the device is used, the tongue is inserted into the intervertebral space from the lacerated opening of the fibrous ring along the expansion core matched with the tongue, the wider main body part is clamped at the lacerated opening and is left outside the intervertebral space, then the nerve drag hook is rotated to block the nerve passing root or the outlet root, and a channel can be reserved for the placement of the fusion device. Based on above-mentioned structure, because the impetus of nerve drag hook is on the endplate rather than on the nerve root, consequently the position of nerve drag hook can not produce great slip or pine because of the power change of putting into or assistant of fusion ware and take off, and then can protect nerve root safely more high-efficiently, reduce to irritating or the damage of nerve root, still can alleviate assistant's burden simultaneously, make its light more.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a nerve retractor.
Background
The lumbar degenerative disease is a general name of lumbar degenerative disc disease, unstable degeneration, stenosis, spondylolisthesis and lateral curvature, is mainly clinically manifested as lumbocrural pain, and is a common disease and a frequently encountered disease in spinal surgery. For patients with surgical indications, safe and effective reduced pressure fusion is often critical to treatment. Compared with the traditional open type operation, the endoscopic decompression fusion can reduce the operation damage to the minimum and simultaneously achieve the same decompression and fusion effects as the open type operation. However, no matter the open surgery or the endoscopic decompression fusion surgery, complications of nerve injury may occur in the process of implanting the fusion device after lumbar decompression, so how to avoid and protect nerve roots more safely and efficiently is a problem to be considered in the surgery.
The decompression fusion under the existing endoscope generally utilizes a baffle plate to protect the nerve passing root or outlet root so as to facilitate the safe implantation of the fusion device and reduce irritation or damage to the nerve root. During operation, a doctor presses the front end of the baffle plate on the surface of an intervertebral space or a vertebral body, and simultaneously pulls open nerve roots to reserve a channel for the implantation of the fusion cage. The disadvantage of this technique is that the force of the baffle is applied to the nerve root, so during percutaneous implantation of the fusion device, there is a high requirement for the stability of the baffle, and the assistant must have a constant, smooth and balanced force when holding the baffle to avoid the irritation or damage to the nerve root caused by the slippage or loosening of the baffle.
Disclosure of Invention
The invention aims to provide a nerve retractor which can better protect nerve roots in the endoscopic decompression fusion operation, is convenient to use and has high safety.
In order to achieve the purpose, the invention provides a nerve retractor, which comprises a strip-shaped main body part, a tongue part arranged at the front end of the main body part and a handle part arranged at the rear end of the main body part, wherein the main body part and the tongue part are both flat, and the width of the tongue part is smaller than that of the main body part.
In some embodiments of the present application, one side surface of the tongue is a curved surface, the other side surface is a flat surface, and in a cross section of the tongue, the length of the arc is one third of the circumference.
In some embodiments of the present application, one side surface of the body portion is an arc surface, the other side surface is a plane surface, and in a cross section of the body portion, an arc length occupies one third of a circumference.
In some embodiments of the present application, the arc surface of the tongue portion is at the same arc surface as the arc surface of the body portion.
In some embodiments of the present application, the tongue has a width of 2-8 mm.
In some embodiments of the present application, the width of the main body portion is 4-12 mm.
In some embodiments of the present application, the tongue portion has a width of 3mm and the body portion has a width of 5 mm.
In some embodiments of the present application, the tongue portion has a width of 6mm and the body portion has a width of 10 mm.
In some embodiments of the present application, the tongue portion has a length of 25 to 35mm, and the main body portion has a length of 110 to 120 mm.
In some embodiments of the present application, the tongue portion has a length of 30mm and the body portion has a length of 115 mm.
In some embodiments of the present application, the handle portion is at an angle to the body portion.
In some embodiments of the present application, the included angle formed between the handle part and the main body part is 120-150 °.
In some embodiments of the present application, the handle portion forms an angle of 130 ° with the body portion.
In some embodiments of the present application, the handle portion is flat with a width greater than or equal to a width of the body portion.
In some embodiments of the present application, both sides and a side surface of the handle are wavy.
The invention provides a nerve retractor, compared with the prior art, the nerve retractor has the beneficial effects that:
the nerve retractor provided by the invention comprises a strip-shaped main body part, a tongue part arranged at the front end of the main body part and a handle part arranged at the rear end of the main body part, wherein the main body part and the tongue part are both flat, and the width of the tongue part is smaller than that of the main body part. When the nerve retractor is used, the tongue of the nerve retractor is inserted into an intervertebral space from a laceration of a fibrous ring along the expansion core matched with the tongue, the main body part with the wider width is clamped at the laceration and is left outside the intervertebral space, then the nerve retractor is rotated to block the nerve passing root or the outlet root, and a channel can be reserved for the implantation of the fusion cage. Based on above-mentioned structure, because the impetus of nerve drag hook is on the endplate rather than on the nerve root, consequently the stability of nerve drag hook is better, and its position can not produce great slip or pine because of the power change of putting into or assistant of fusion ware, and then can protect nerve root more high-efficiently safely when putting into the fusion ware, reduces to irritating or the damage of nerve root, still can alleviate assistant's burden simultaneously, makes its relaxation more.
Drawings
FIG. 1 is a schematic front view of a nerve retractor according to an embodiment of the present invention;
fig. 2 is a side view of the nerve retractor according to the embodiment of the present invention.
In the figure: 1. a main body portion; 2. a tongue portion; 3. a handle portion.
Detailed Description
The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It will be understood that in the description of the present application, the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for ease of description and simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present application. The terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, i.e. a feature defined as "first", "second" may explicitly or implicitly include one or more of such features. Further, unless otherwise specified, "a plurality" means two or more.
It should be noted that, in the description of the present application, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
As shown in fig. 1 and 2, an embodiment of the present invention provides a nerve retractor, which includes a strip-shaped main body 1, a tongue 2 disposed at a front end of the main body 1, and a handle 3 disposed at a rear end of the main body 1, wherein the main body 1 and the tongue 2 are both flat, and a width T of the tongue 2 is smaller than a width H of the main body 1. When the nerve retractor is used, the tongue part 2 of the nerve retractor is inserted into an intervertebral space from a laceration of a fibrous ring along the expansion core matched with the tongue part, the main body part 1 with a wider width is retained outside the intervertebral space due to being clamped at the laceration, then the nerve retractor is rotated to block the nerve passing root or the outlet root, and a channel can be reserved for the implantation of the fusion cage.
Based on above-mentioned structure, because the impetus of nerve drag hook is on the endplate rather than on the nerve root, consequently the stability of nerve drag hook is better, and its position can not produce great slip or pine because of the power change of putting into or assistant of fusion ware, and then can protect nerve root more high-efficiently safely when putting into the fusion ware, reduces to irritating or the damage of nerve root, still can alleviate assistant's burden simultaneously, makes its relaxation more.
Alternatively, as shown in fig. 2, in some embodiments, one side surface of the tongue 2 is a curved surface for contacting the nerve root, and the other side surface is a flat surface, and, in the cross section of the tongue 2, the arc length occupies one third of the circumference. Also, one side surface of the body part 1 is a curved surface for contacting a nerve root, and the other side surface is a flat surface, and, in the cross section of the body part 1, the arc length occupies one third of the circumference.
Further, the arc surface of the tongue portion 2 and the arc surface of the main body portion 1 are in the same arc surface. So, the reducible nerve drag hook of cambered surface causes irritation or damage to the nerve root, has improved the security of nerve drag hook.
Optionally, in some embodiments, the width T of the tongue portion 2 is 2-8 mm, and the width H of the body portion 1 is 4-12 mm. Preferably, when the width T of the tongue portion 2 is 3mm, the width H of the body portion 1 is 5 mm; when the width T of the tongue 2 is 6mm, the width H of the body 1 is 10 mm.
Optionally, in some embodiments, the length S of the tongue portion 2 is 25-35 mm, and the length L of the body portion 1 is 110-120 mm, wherein 30mm is the preferred length of the tongue portion 2, and 115mm is the preferred length of the body portion 1.
Optionally, as shown in fig. 2, in some embodiments, in order to facilitate the operation of the nerve retractor, the handle portion 3 and the main body portion 1 form an angle, specifically, an included angle formed between the handle portion 3 and the main body portion 1 is 120 to 150 °, wherein 130 ° is a preferred included angle formed between the handle portion 3 and the main body portion 1.
Alternatively, as shown in fig. 1 and 2, in some embodiments, the shank 3 is flat, has a width N greater than or equal to the width H of the body 1, and, in order to prevent slipping, has both side edges and one side surface of the shank 3 wavy.
To sum up, the embodiment of the present invention provides a nerve retractor, which includes a strip-shaped main body portion 1, a tongue portion 2 disposed at a front end of the main body portion 1, and a handle portion 3 disposed at a rear end of the main body portion 1, wherein the main body portion 1 and the tongue portion 2 are both flat, and a width T of the tongue portion 2 is smaller than a width H of the main body portion 1. Compared with the prior art, the nerve retractor can better protect nerve roots in the decompression fusion operation under the endoscope, and has convenient use and high safety.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (10)
1. The utility model provides a nerve retractor, its characterized in that includes the main part of bar, locates the tongue portion of main part front end and locates the stalk portion of main part rear end, the main part with the tongue portion is the platykurtic, just the width of tongue portion is less than the width of main part.
2. The nerve retractor according to claim 1, wherein one side surface of the tongue portion is a curved surface, the other side surface is a flat surface, and in a cross section of the tongue portion, an arc length is one third of a circumference.
3. The nerve retractor according to claim 2, wherein one side surface of the main body portion is a curved surface, the other side surface is a flat surface, and in a cross section of the main body portion, the arc length occupies one third of the circumference.
4. The nerve retractor according to claim 3, wherein the curved surface of the tongue portion is the same as the curved surface of the body portion.
5. The nerve retractor according to claim 1, wherein the tongue portion has a width of 2 to 8 mm.
6. The nerve retractor according to claim 1, wherein the width of the main body portion is 4 to 12 mm.
7. The nerve retractor according to claim 1, wherein said shank portion is angled with respect to said body portion.
8. The nerve retractor according to claim 7, wherein the angle formed between the shank portion and the main body portion is 120-150 °.
9. The nerve retractor according to claim 1, wherein the shank portion is flat and has a width greater than or equal to a width of the body portion.
10. The nerve retractor according to claim 9, wherein both side edges and a side surface of the shank portion are wavy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010735161.0A CN111839622A (en) | 2020-07-27 | 2020-07-27 | Nerve retractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010735161.0A CN111839622A (en) | 2020-07-27 | 2020-07-27 | Nerve retractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111839622A true CN111839622A (en) | 2020-10-30 |
Family
ID=72947762
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010735161.0A Pending CN111839622A (en) | 2020-07-27 | 2020-07-27 | Nerve retractor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111839622A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5803904A (en) * | 1997-10-28 | 1998-09-08 | Mehdizadeh; Hamid | Nerve root retractor and disc space separator |
| CN203122495U (en) * | 2013-03-26 | 2013-08-14 | 刘梦扬 | Fixable nerve hook |
| US20170021147A1 (en) * | 2012-12-19 | 2017-01-26 | Life Spine, Inc. | Directional sequential dilation system with neuro monitoring |
| KR20200072141A (en) * | 2018-12-12 | 2020-06-22 | 주식회사 메디너스 | Tubular Retractor for Minimally Invasive Surgery |
| CN212394984U (en) * | 2020-07-27 | 2021-01-26 | 广州中医药大学第一附属医院 | Nerve retractor |
-
2020
- 2020-07-27 CN CN202010735161.0A patent/CN111839622A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5803904A (en) * | 1997-10-28 | 1998-09-08 | Mehdizadeh; Hamid | Nerve root retractor and disc space separator |
| US20170021147A1 (en) * | 2012-12-19 | 2017-01-26 | Life Spine, Inc. | Directional sequential dilation system with neuro monitoring |
| CN203122495U (en) * | 2013-03-26 | 2013-08-14 | 刘梦扬 | Fixable nerve hook |
| KR20200072141A (en) * | 2018-12-12 | 2020-06-22 | 주식회사 메디너스 | Tubular Retractor for Minimally Invasive Surgery |
| CN212394984U (en) * | 2020-07-27 | 2021-01-26 | 广州中医药大学第一附属医院 | Nerve retractor |
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