CN113729841B - Annular opening cutter - Google Patents

Annular opening cutter Download PDF

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Publication number
CN113729841B
CN113729841B CN202111103249.1A CN202111103249A CN113729841B CN 113729841 B CN113729841 B CN 113729841B CN 202111103249 A CN202111103249 A CN 202111103249A CN 113729841 B CN113729841 B CN 113729841B
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China
Prior art keywords
cutter
transverse
width
height
longitudinal
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CN202111103249.1A
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Chinese (zh)
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CN113729841A (en
Inventor
冯世庆
伊力扎提·伊力哈木
樊祥闯
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Bangshi Technology Nanjing Co ltd
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Bangshi Technology Nanjing Co ltd
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Priority to CN202111103249.1A priority Critical patent/CN113729841B/en
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
    • A61B17/1662—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans for particular parts of the body
    • A61B17/1671—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans for particular parts of the body for the spine
    • 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
    • A61B17/3209—Incision instruments
    • A61B17/3211—Surgical scalpels, knives; Accessories therefor
    • 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
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/66—Disintegrating fibre-containing textile articles to obtain fibres for re-use

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  • Health & Medical Sciences (AREA)
  • Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biomedical Technology (AREA)
  • Medical Informatics (AREA)
  • Veterinary Medicine (AREA)
  • Public Health (AREA)
  • Engineering & Computer Science (AREA)
  • General Health & Medical Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Dentistry (AREA)
  • Pathology (AREA)
  • Surgical Instruments (AREA)

Abstract

The invention relates to the technical field of medical equipment, in particular to a fiber ring opening cutter which comprises a cutter head and a cutter handle, wherein the cutter head comprises a longitudinal cutter, a first transverse cutter, a second transverse cutter, a cutter seat and a connecting part, the lower end of the cutter handle and the connecting part are installed together, the cutter seat is fixedly arranged at the lower end of the connecting part, the cutter seat is cylindrical, a limiting ring table is arranged at the outer side of the upper end of the cutter seat, the lower side of the cutter seat is fixedly provided with the longitudinal cutter, and the outer contour of the longitudinal cutter is a curve protruding downwards. The invention has reasonable and compact structure and ingenious conception, and the skin of a patient is incised by the longitudinal cutter at the beginning of an operation, so as to complete the exposure of an operation area; when the nuclectomy operation is carried out in the operation, the longitudinal cutter, the first transverse cutter and the second transverse cutter are used for cutting the fiber ring, so that the cross incision is completed once, and the defect that the edge of the fiber ring incision is uneven due to repeated operation of replacing the surgical knife is avoided; the toughness or calcification condition of the nucleus pulposus tissues between the vertebrae can be mastered by rotating the swinging cutter head, and the method has the characteristics of rapidness, high efficiency and simplicity in operation.

Description

Annular opening cutter
Technical Field
The invention relates to the technical field of medical equipment, in particular to a fiber ring opening cutter.
Background
The human spine is made up of 24 vertebrae (7 cervical vertebrae, 12 thoracic vertebrae, 5 lumbar vertebrae), 1 sacrum, and 1 coccyx connected by ligaments, joints, and intervertebral discs. The spine is a body support, is positioned in the middle of the back, has the upper end connected with the skull, and has the lower end reaching the coccyx tip. The spine is divided into five sections of neck, chest, waist, sacrum and tail, the upper part is long and can move, and the spine looks like a bracket and hangs the chest wall and the abdominal wall; the lower part is short and relatively fixed. The weight of the body and the shock to which it is subjected are thus transmitted to the lower limbs. Lumbar intervertebral disc herniation (lumbar disc herniation is followed by nerve compression, the nerve compression is intervertebral disc tissue and is soft tissue), lumbar spinal stenosis (lumbar spinal stenosis is caused by relative stenosis of nerve channel and is caused by clamping pressure symptom), and the nerve compression is osseous tissue and is hard tissue) is a common disease and is a long-term puzzled for patients.
In clinical practice, particularly in minimally invasive or endoscopic spinal procedures, spinal surgeons often need to cut annular annulus fibrosus tissue to further remove disc and nucleus pulposus tissue during a lumbar discectomy. The skin is cut into cross-shaped incisions by the surgical knife in the transverse and vertical directions, so that the situation that the incisions are irregular due to the fact that the nucleus pulposus forceps are put into the incisions in the later stage is avoided. Because the widths and depths of the transverse incision and the vertical incision are different, the cross incision needs to be cut for multiple times or important tissues such as spinal cord, nerve roots and the like of a patient are accidentally damaged in the operation process, so that the functions of the nerve at the far end of an operation area of the patient are damaged, even paraplegia is caused, and the situation especially occurs when the experience of an operator is lack; in addition, the prior tool bit can not control the insertion depth, if the tool bit is inserted too deeply, the tissue in front of the spine can be damaged, and especially, the tissue in front of the fiber ring is broken and the aorta and the inferior vena cava in front of the vertebral body are damaged due to too deep insertion.
Disclosure of Invention
The invention provides a fibrous ring opening cutter, which overcomes the defects in the prior art, can effectively solve the problem that the traditional scalpel cannot cut a cross incision at one time, and can further avoid the problem that tissue in front of a spine is damaged due to too deep cutter head insertion.
The technical scheme of the invention is realized by the following measures: the cutter comprises a cutter head and a cutter handle, wherein the cutter head comprises a longitudinal cutter, a first transverse cutter, a second transverse cutter, a cutter seat and a connecting part, the lower end of the cutter handle is installed together with the connecting part, the cutter seat is fixedly arranged at the lower end of the connecting part and is cylindrical, a limiting ring table is arranged at the outer side of the upper end of the cutter seat, the lower side of the cutter seat is fixedly provided with the longitudinal cutter, the outer contour of the longitudinal cutter is a curve protruding downwards, and an arc-shaped blade is arranged at the outer side of the longitudinal cutter; the left side of the longitudinal cutter is provided with a first transverse cutter, the outer contour of the first transverse cutter is a curve protruding outwards downwards leftwards, the outer side of the left part of the first transverse cutter is provided with an arc-shaped blade, the upper end of the first transverse cutter is fixedly arranged together with the lower side of the cutter holder, and the right side of the first transverse cutter is fixedly arranged together with the left side of the longitudinal cutter; the right side of the longitudinal cutter is provided with a second transverse cutter, the outer contour of the second transverse cutter is a curve protruding outwards towards the lower right side, the outer side of the right part of the second transverse cutter is provided with an arc-shaped blade, the upper end of the second transverse cutter is fixedly arranged with the lower side of the cutter holder, and the left side of the second transverse cutter is fixedly arranged with the right side of the longitudinal cutter.
The following are further optimizations and/or improvements to the above-described inventive solution:
the height of the longitudinal cutter is a first height, the width of the longitudinal cutter is a first width, and the first height is larger than the first width; the height of the first transverse cutter is a second height, the width of the first transverse cutter is a second width, and the second height is larger than the second width; the height of the second transverse cutter is a third height, the width of the second transverse cutter is a third width, and the third height is larger than the third width.
The first height is between 6mm and 12mm, the difference between the first height and the second height is between 1mm and 4mm, and the difference between the first height and the third height is between 1mm and 4 mm.
The first width is between 5mm and 10mm, the first width is 1.5 to 2 times of the second width, and the first width is 1.5 to 2 times of the third width.
The outer contour of the longitudinal cutter is semi-elliptic, parabolic or quasi-semi-elliptic, the outer contour of the first transverse cutter is quarter elliptic, descending curve or exponential function, and the outer contour of the second transverse cutter is quarter elliptic, ascending curve or exponential function.
The knife handle comprises an upper straight rod, a middle straight rod and a lower straight rod, wherein the lower end of the upper straight rod is fixedly arranged with the left end of the middle straight rod, and the right end of the middle straight rod is fixedly arranged with the upper end of the lower straight rod; the lower end of the lower straight rod is detachably and fixedly arranged with the connecting part.
The invention has reasonable and compact structure and ingenious conception, and the skin of a patient is incised by the longitudinal cutter at the beginning of an operation, so as to complete the exposure of an operation area; when the nuclectomy operation is carried out in the operation, the longitudinal cutter, the first transverse cutter and the second transverse cutter are used for cutting the fiber ring, so that the cross incision is completed once, and the defect that the edge of the fiber ring incision is uneven due to repeated operation of replacing the surgical knife is avoided; by adopting the arc-shaped structure of the longitudinal cutter, the first transverse cutter and the second transverse cutter, nerve injury caused by vision shielding can be avoided; the toughness or calcification condition of the nucleus pulposus tissues between the vertebrae can be mastered by rotating the swinging cutter head, and the method has the characteristics of rapidness, high efficiency and simplicity in operation.
Drawings
Fig. 1 is a schematic diagram of a front view of a preferred embodiment of the present invention.
Fig. 2 is a schematic view of a front view of the tool bit of fig. 1 in an enlarged configuration.
Fig. 3 is a schematic left-hand view of fig. 2.
Fig. 4 is a schematic perspective view of fig. 2.
The codes in the drawings are respectively: 1 is a slitting knife, 2 is a first transverse knife, 3 is a second transverse knife, 4 is a knife holder, 5 is a connecting part, 6 is an upper straight rod, 7 is a middle cross rod, 8 is a lower straight rod, 9 is a limiting ring table, h 1 At a first height, h 2 At a second height, h 3 At a third height, b 1 For a first width b 2 A second width b 3 Is a third width.
Detailed Description
The present invention is not limited by the following examples, and specific embodiments can be determined according to the technical scheme and practical situations of the present invention.
In the present invention, for convenience of description, the description of the relative positional relationship of each component is described according to the layout manner of fig. 1 of the specification, for example: the positional relationship of the front, rear, upper, lower, left, right, etc. is determined in accordance with the layout direction of the drawings of the specification.
The invention is further described below with reference to examples and figures:
as shown in figures 1, 2, 3 and 4, the annular fiber opening cutter comprises a cutter head and a cutter handle, wherein the cutter head comprises a longitudinal cutter 1, a first transverse cutter 2, a second transverse cutter 3, a cutter holder 4 and a connecting part 5, the lower end of the cutter handle is arranged together with the connecting part 5, the lower end of the connecting part 5 is fixedly provided with the cutter holder 4, the cutter holder 4 is cylindrical, the outer side of the upper end of the cutter holder 4 is provided with a limiting ring table 9, the lower side of the cutter holder 4 is fixedly provided with the longitudinal cutter 1, the outer contour of the longitudinal cutter 1 is a curve protruding downwards, and the outer side of the longitudinal cutter 1 is provided with an arc-shaped blade; the left side of the longitudinal cutter 1 is provided with a first transverse cutter 2, the outer contour of the first transverse cutter 2 is a curve protruding outwards downwards and leftwards, the outer side of the left part of the first transverse cutter 2 is provided with an arc-shaped blade, the upper end of the first transverse cutter 2 is fixedly arranged with the lower side of the cutter holder 4, and the right side of the first transverse cutter 2 is fixedly arranged with the left side of the longitudinal cutter 1; the right side of the longitudinal cutter 1 is provided with a second transverse cutter 3, the outer contour of the second transverse cutter 3 is a curve protruding outwards towards the right lower side, the outer side of the right part of the second transverse cutter 3 is provided with an arc-shaped blade, the upper end of the second transverse cutter 3 is fixedly arranged with the lower side of the cutter holder 4, and the left side of the second transverse cutter 3 is fixedly arranged with the right side of the longitudinal cutter 1.
In the operations of cervical vertebra, thoracic vertebra and lumbar vertebra, the invention can replace the prior operation blade, and the skin of a patient is incised by the longitudinal cutter 1 at the beginning of the operation to complete the exposure of an operation area; when the nuclectomy operation is carried out in the operation, the longitudinal cutter 1, the first transverse cutter 2 and the second transverse cutter 3 are used for cutting the fiber ring, so that a cross incision is completed once, and the phenomenon that the edge of the fiber ring incision is uneven due to repeated operation of replacing the surgical knife is avoided; by adopting the arc-shaped structure of the longitudinal cutter 1, the first transverse cutter 2 and the second transverse cutter 3, nerve injury caused by vision shielding can be avoided; the toughness or calcification condition of the nucleus pulposus tissues among the vertebrae is mastered by rotating the swinging cutter head; in addition, the invention is inserted from the rear of the intervertebral disc to keep parallel with the intervertebral disc to cut an opening, the maximum width can be various widths, the operation of cleaning the intervertebral disc is determined according to the body type of a patient and the width of a reamer used in the next operation, such as 7mm, 8mm, 9mm, 10mm and the like, the operation of removing the free intervertebral disc is determined according to the double-end thickness of the nucleus pulposus clamp, such as 4mm, 6mm and the like, and therefore, the opening caliber of the annulus fibrosus can be met in one step no matter the operation proficiency of an operator, the later replacement of a cutter head or a cutter handle is not needed, and the time and the economic cost are saved. According to the requirements, on one hand, the cutter head and the cutter handle can be in a detachable fixed mounting mode, so that different cutter heads can be conveniently selected according to the body shape of a patient or the size of an incision, and the connecting part 5 can be a currently known quick mounting and dismounting head of a surgical knife and can be directly connected with the cutter handle commonly used in clinic at present; on the other hand, the tool bit and the tool handle can be integrally arranged, so that hidden danger caused by repeated disinfection is avoided.
By arranging the cylindrical tool apron 4, the tool bit can be rotated and swung conveniently, and the toughness or calcification condition of the nucleus pulposus tissues between the vertebrae can be mastered; by arranging the limiting ring table 9, the damage to the tissue in front of the spine caused by the too deep insertion of the cutter head can be avoided, and particularly, the front fracture of the fibrous ring caused by the too deep insertion can damage the front aorta and the inferior vena cava of the vertebral body.
The annular opening cutter can be further optimized or/and improved according to actual needs:
as shown in figures 1, 2, 3 and 4, the height of the longitudinal cutter 1 is a first height h 1 The width of the longitudinal cutter 1 is a first width b 1 First height h 1 Greater than the first width b 1 The method comprises the steps of carrying out a first treatment on the surface of the The first transverse knife 2 has a second height h 2 The width of the first transverse cutter 2 is the second width b 2 Second height h 2 Greater than the second width b 2 The method comprises the steps of carrying out a first treatment on the surface of the The height of the second transverse knife 3 is a third height h 3 The width of the second transverse cutter 3 is a third width b 3 Third height h 3 Greater than the third width b 3 . In the use, through such setting, be convenient for accomplish cross incision, and can avoid the nerve damage that the vision sheltered from and cause.
As shown in figures 1, 2, 3 and 4, a first height h 1 Between 6mm and 12mm, a first height h 1 And a second height h 2 The height difference of (2) is between 1mm and 4mm, the first height h 1 And a third height h 3 The height difference of (2) is between 1mm and 4 mm. In the use process, through the arrangement, the lower end of the slitter 1 is positioned below the first transverse cutter 2 and the second transverse cutter 3, so that the problem of exposed too much undissociated nucleus pulposus and even the problem of exposed end plates which cannot be observed is avoided.
As shown in fig. 1, 2, 3 and 4, a first width b 1 Between 5mm and 10mm, a first width b 1 Is of a second width b 2 1.5 to 2 times the first width b 1 Is of a third width b 3 1.5 to 2 times of (a). In the use process, through the arrangement, after the cutter head enters the intervertebral space, the cutter head rotates and swingsGrasping the toughness or calcification of the nucleus pulposus tissue.
As shown in fig. 1, 2, 3 and 4, the outer contour of the longitudinal cutter 1 is semi-elliptical, parabolic or semi-elliptical, the outer contour of the first transverse cutter 2 is quarter-elliptical, descending curve or exponential function, and the outer contour of the second transverse cutter 3 is quarter-elliptical, ascending curve or exponential function. In the use, through such setting, be convenient for accomplish cross incision, and can avoid the nerve damage that the vision sheltered from and cause.
As shown in figures 1, 2, 3 and 4, the knife handle comprises an upper straight rod 6, a middle cross rod 7 and a lower straight rod 8, wherein the lower end of the upper straight rod 6 is fixedly arranged with the left end of the middle cross rod 7, and the right end of the middle straight rod is fixedly arranged with the upper end of the lower straight rod 8; the lower end of the lower straight rod 8 is detachably and fixedly arranged with the connecting part 5. In the use process, the knife handle is in a gun-type structure, so that the hand or the instrument of an operator is prevented from shielding the visual field of the operator, and the whole knife handle can be made of a hollow metal material, so that the weight is reduced, and the material is saved; in addition, the outer diameter of the upper straight rod 6 can be larger than that of the lower straight rod 8, so that stability in knife holding is enhanced.
The technical characteristics constitute the embodiments of the invention, which have strong adaptability and implementation effect, and unnecessary technical characteristics can be increased or decreased according to actual needs to meet the demands of different situations.

Claims (3)

1. The annular fiber opening cutter is characterized by comprising a cutter head and a cutter handle, wherein the cutter head comprises a longitudinal cutter, a first transverse cutter, a second transverse cutter, a cutter seat and a connecting part; the left side of the longitudinal cutter is provided with a first transverse cutter, the outer contour of the first transverse cutter is a curve protruding outwards downwards leftwards, the outer side of the left part of the first transverse cutter is provided with an arc-shaped blade, the upper end of the first transverse cutter is fixedly arranged together with the lower side of the cutter holder, and the right side of the first transverse cutter is fixedly arranged together with the left side of the longitudinal cutter; the right side of the longitudinal cutter is provided with a second transverse cutter, the outer contour of the second transverse cutter is a curve protruding outwards towards the right lower side, the outer side of the right part of the second transverse cutter is provided with an arc-shaped blade, the upper end of the second transverse cutter is fixedly arranged with the lower side of the cutter holder, and the left side of the second transverse cutter is fixedly arranged with the right side of the longitudinal cutter; the height of the longitudinal cutter is a first height, the width of the longitudinal cutter is a first width, and the first height is larger than the first width; the height of the first transverse cutter is a second height, the width of the first transverse cutter is a second width, and the second height is larger than the second width; the height of the second transverse cutter is a third height, the width of the second transverse cutter is a third width, and the third height is larger than the third width; the first height is between 6mm and 12mm, the difference between the first height and the second height is between 1mm and 4mm, and the difference between the first height and the third height is between 1mm and 4 mm; the first width is between 5mm and 10mm, the first width is 1.5 to 2 times of the second width, and the first width is 1.5 to 2 times of the third width.
2. The annular opening knife of claim 1 wherein the outer profile of the longitudinal knife is semi-elliptical or parabolic or semi-elliptical-like, the outer profile of the first transverse knife is quarter-elliptical or descending curved or exponential, and the outer profile of the second transverse knife is quarter-elliptical or ascending curved or exponential.
3. The annular fiber opening cutter according to claim 1 or 2, wherein the cutter handle comprises an upper straight rod, a middle straight rod and a lower straight rod, the lower end of the upper straight rod is fixedly arranged with the left end of the middle straight rod, and the right end of the middle straight rod is fixedly arranged with the upper end of the lower straight rod; the lower end of the lower straight rod is detachably and fixedly arranged with the connecting part.
CN202111103249.1A 2021-09-18 2021-09-18 Annular opening cutter Active CN113729841B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111103249.1A CN113729841B (en) 2021-09-18 2021-09-18 Annular opening cutter

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Application Number Priority Date Filing Date Title
CN202111103249.1A CN113729841B (en) 2021-09-18 2021-09-18 Annular opening cutter

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CN113729841B true CN113729841B (en) 2023-08-08

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1596835A (en) * 2004-08-26 2005-03-23 程雷 Inter vertebral disk removal knife
CN200973739Y (en) * 2006-04-26 2007-11-14 谭锐 Intervertebral disc sleeve type fiber annular tissue incising scalpel
CN101361697A (en) * 2008-05-16 2009-02-11 胡元广 Acupuncture knife
CN208876687U (en) * 2017-11-02 2019-05-21 爱博诺德（苏州）医疗器械有限公司 A kind of scalpel and its cutter head

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4161026B2 (en) * 2003-07-01 2008-10-08 マニー株式会社 Medical knife

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1596835A (en) * 2004-08-26 2005-03-23 程雷 Inter vertebral disk removal knife
CN200973739Y (en) * 2006-04-26 2007-11-14 谭锐 Intervertebral disc sleeve type fiber annular tissue incising scalpel
CN101361697A (en) * 2008-05-16 2009-02-11 胡元广 Acupuncture knife
CN208876687U (en) * 2017-11-02 2019-05-21 爱博诺德（苏州）医疗器械有限公司 A kind of scalpel and its cutter head

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