CN117503279A - Endoscope rotary cutting tool and endoscope - Google Patents
Endoscope rotary cutting tool and endoscope Download PDFInfo
- Publication number
- CN117503279A CN117503279A CN202311475722.8A CN202311475722A CN117503279A CN 117503279 A CN117503279 A CN 117503279A CN 202311475722 A CN202311475722 A CN 202311475722A CN 117503279 A CN117503279 A CN 117503279A
- Authority
- CN
- China
- Prior art keywords
- planing
- spiral
- rotating piece
- proximal end
- cutter tube
- 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
Links
- 230000001575 pathological effect Effects 0.000 claims abstract description 58
- 239000007788 liquid Substances 0.000 claims description 7
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 238000005096 rolling process Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 10
- 238000004804 winding Methods 0.000 abstract description 3
- 210000001519 tissue Anatomy 0.000 description 95
- 230000003902 lesion Effects 0.000 description 17
- 238000005452 bending Methods 0.000 description 2
- 238000002324 minimally invasive surgery Methods 0.000 description 2
- 230000036285 pathological change Effects 0.000 description 2
- 231100000915 pathological change Toxicity 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 201000004458 Myoma Diseases 0.000 description 1
- 208000037062 Polyps Diseases 0.000 description 1
- 208000035965 Postoperative Complications Diseases 0.000 description 1
- 206010046798 Uterine leiomyoma Diseases 0.000 description 1
- 206010052428 Wound Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000004872 soft tissue Anatomy 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
- 206010046811 uterine polyp Diseases 0.000 description 1
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
- A61B17/32002—Endoscopic cutting instruments, e.g. arthroscopes, resectoscopes with continuously rotating, oscillating or reciprocating cutting instruments
-
- 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
- A61B17/32002—Endoscopic cutting instruments, e.g. arthroscopes, resectoscopes with continuously rotating, oscillating or reciprocating cutting instruments
- A61B2017/320032—Details of the rotating or oscillating shaft, e.g. using a flexible shaft
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 belongs to the field of medical instruments, and discloses an endoscope rotary cutting tool and an endoscope, wherein the endoscope rotary cutting tool comprises an outer cutter tube, a planing cutter and a rotating piece, and the inner part of the outer cutter tube is of a hollow structure; the planing knife is fixedly arranged in the outer knife tube; the rotating piece is arranged in the outer cutter tube, the outer side wall of the rotating piece is spaced from the inner side wall of the outer cutter tube, the rotating piece is rotatable relative to the outer cutter tube along the circumferential direction of the outer cutter tube, the outer side wall of the rotating piece is provided with a spiral part, the proximal end of the spiral part extends to the planing tool, and when the rotating piece rotates, the spiral part is used for continuously winding and conveying pathological tissues to the planing tool for planing. According to the invention, the spiral part is arranged on the rotating part, so that hard or soft pathological tissues can be continuously conveyed to the proximal end of the spiral part without cutting when the spiral part rotates, and then the planing is performed by the planing knife arranged at the proximal end of the spiral part, so that the problem that the hard tissues cannot be planed due to the fact that the hard tissues cannot be adsorbed by means of negative pressure in the prior art is solved, and the treatment effect of the endoscope is improved.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to an endoscope rotary cutting tool and an endoscope.
Background
With the continuous progress of medical technology, many operations can be resected and/or repaired under the minimally invasive condition through auxiliary instruments, so that the minimally invasive operations not only reduce the pain of patients, but also can cause less wounds, so that the patients can recover quickly, postoperative complications are reduced, and the operation cost is saved. At present, the minimally invasive surgery treatment is also introduced in uterine cavity surgery, for example, the minimally invasive surgery is performed in the uterine cavity by matching with an endoscope, and then the excision of pathological tissues such as hysteromyoma, uterine polyp and the like is realized.
When the endoscope is used for planing the pathological tissues, the pathological tissues such as polyps, myomas and the like are mainly resected by the actions of tearing and shaving. At present, when hysteroscope operation is carried out, pathological tissues are sucked through negative pressure, and then the pathological tissues are shaved by a shaving knife, however, as the negative pressure only can suck soft tissues and can not suck hard tissues, the hard tissues can not be effectively shaved, and the treatment effect of the hysteroscope is affected.
Disclosure of Invention
The invention aims to provide an endoscope rotary cutter and an endoscope, which solve the problem that hard tissues cannot be effectively shaved due to the fact that the hard tissues cannot be adsorbed by negative pressure.
The technical scheme provided by the invention is as follows:
in one aspect, there is provided an endoscopic rotary cutting tool comprising:
the outer cutter tube is of a hollow structure, a cutting window which is obliquely arranged is arranged on the outer side wall of the distal end of the outer cutter tube, the distal end and two side edges of the cutting window are non-cutting edges, and a cutting edge is arranged at the proximal end of the cutting window;
the planing knife is fixedly arranged in the outer knife tube and is spaced from the distal end of the outer knife tube;
the rotating piece is arranged in the outer cutter tube, the outer side wall of the rotating piece and the inner side wall of the outer cutter tube are provided with a distance, the rotating piece is arranged along the circumferential direction of the outer cutter tube and is rotatable relative to the outer cutter tube, the outer side wall of the rotating piece is provided with a spiral part, the proximal end of the spiral part extends to the planing cutter, the outer diameter edge of the spiral part is a non-cutting edge, and when the rotating piece rotates, the spiral part is used for continuously rolling and conveying pathological tissues to the planing cutter for planing.
In some embodiments, the spiral part is a spiral blade, the spiral blade is spirally arranged at the distal end of the rotating member along the peripheral surface of the rotating member, and the rotating member rotates to drive the spiral blade to rotate, so that the spiral blade conveys the pathological tissue to the planing tool.
In some embodiments, the outer knife tube further comprises a barb portion, one end of the barb portion is fixedly connected with the distal end of the helical blade, and the other end of the barb portion is bent towards the proximal end of the outer knife tube.
In some embodiments, the proximal end of the helical blade is provided with a notch dividing the helical blade into two sections, the notch of the helical blade is provided with a blade, and the planing blade is arranged at the notch and is used for planing pathological tissues in cooperation with the planing blade.
In some embodiments, the number of the notches is a plurality, the notches are arranged at intervals along the axial direction of the helical blade, and each notch is provided with one planing knife.
In some embodiments, the spiral portion is a spiral opening provided on the distal outer circumferential surface of the rotating member, and the spiral opening is used for conveying the lesion tissue to the shaver when the rotating member rotates.
In some embodiments, the planing tool is disposed proximal to the helical opening, the proximal end of the helical opening being provided with a cutting edge for planing diseased tissue in cooperation with the planing tool.
In some embodiments, the distal end of the rotating member is provided with a barb portion, one end of which is fixedly connected to the rotating member, and the other end of which is bent toward the proximal end of the rotating member.
In some embodiments, a suction mechanism is also included;
the rotating piece is of a hollow structure, and the suction mechanism is arranged at the proximal end of the rotating piece and used for sucking and draining liquid through the rotating piece.
In some embodiments, the distal end of the outer cutter tube is semi-spherical.
In some embodiments, the surgical knife further comprises an operating handle disposed at the proximal ends of the outer knife tube and the rotator.
On the other hand, an endoscope is also provided, which comprises the endoscope rotary cutting tool according to any embodiment.
The invention has the technical effects that: through set up the screw part on rotating the piece, can not cut off hard or soft pathological change tissue when screw part is rotatory to drag pathological change tissue and carry to the proximal end of screw part continuously, then carry out the planing by the planing sword that sets up in screw part proximal end, in order to solve among the prior art and rely on the negative pressure unable absorption hard tissue, lead to the unable problem of planing of hard tissue, improve the treatment of endoscope.
Drawings
The invention is described in further detail below with reference to the attached drawings and detailed description:
FIG. 1 is a schematic view of an endoscopic rotary cutter according to an embodiment of the present application;
FIG. 2 is an enlarged view at A in FIG. 1;
FIG. 3 is a cross-sectional view of an endoscopic rotary cutter according to one embodiment of the present application;
fig. 4 is an enlarged view at B in fig. 3;
FIG. 5 is a schematic view of a rotating member according to an embodiment of the present disclosure;
FIG. 6 is an enlarged view at C in FIG. 5;
fig. 7 is a schematic structural diagram of a rotating member according to a second embodiment of the present application.
Reference numerals illustrate:
10. an outer cutter tube; 101. cutting the window; 1011. a distal end portion; 1012. a proximal portion; 20. planing knife; 30. a rotating member; 301. a helical blade; 3011. a notch; 3012. a blade; 302. a barb portion; 303. a spiral opening; 40. and operating the handle.
Detailed Description
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
For the sake of simplicity of the drawing, the parts relevant to the present invention are shown only schematically in the figures, which do not represent the actual structure thereof as a product. Additionally, in order to simplify the drawing for ease of understanding, components having the same structure or function in some of the drawings are shown schematically with only one of them, or only one of them is labeled. Herein, "a" means not only "only this one" but also "more than one" case.
It should be further understood that the term "and/or" as used in this specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations.
In this context, it should be noted that the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, unless explicitly stated or limited otherwise; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In addition, in the description of the present application, the terms "first," "second," and the like are used merely to distinguish between descriptions and are not to be construed as indicating or implying relative importance.
In this application, "proximal" and "distal" are relative orientations, relative positions, directions of elements or actions relative to one another from the perspective of a physician using the medical device, although "proximal" and "distal" are not intended to be limiting, and "proximal" generally refers to the end of the medical device that is proximal to the physician during normal operation, and "distal" generally refers to the end that is distal to the physician during normal operation, i.e., the end that first enters the patient.
Example 1
As shown in fig. 1 to 6, an endoscope rotary cutting tool comprises an outer cutter tube 10, a planing cutter 20 and a rotating member 30, wherein the inner part of the outer cutter tube 10 is of a hollow structure, the outer side wall of the distal end of the outer cutter tube 10 is provided with a cutting window 101 which is obliquely arranged, the distal end and two sides of the cutting window 101 are non-cutting edges, and the proximal end of the cutting window 101 is provided with a cutting edge; the planing tool 20 is fixedly arranged in the outer cutter tube 10 and has a certain distance with the distal end of the outer cutter tube 10; the rotating member 30 is disposed in the outer cutter tube 10, the outer side wall of the rotating member 30 has a distance from the inner side wall of the outer cutter tube 10, the rotating member 30 is rotatable relative to the outer cutter tube 10 along the circumferential direction of the outer cutter tube 10, the outer side wall of the rotating member 30 is provided with a spiral portion, the proximal end of the spiral portion extends to the planing tool 20, the outer diameter edge of the spiral portion is a non-cutting edge, and when the rotating member 30 rotates, the spiral portion is used for continuously winding and conveying pathological tissues to the planing tool 20 for planing.
Specifically, the outer cutter tube 10 is a tubular structure extending along an axial direction, the inner portion of the outer cutter tube 10 is hollow, the planing tool 20 and the rotating member 30 are disposed in the outer cutter tube 10, a cutting window 101 is disposed at a distal end of the outer cutter tube 10, and a distal end of the rotating member 30 is exposed out of the cutting window 101, so that the rotating member 30 can contact with pathological tissues outside the outer cutter tube 10, and the pathological tissues are curled into the outer cutter tube 10 for planing through the spiral portion, and the cutting window 101 on the outer cutter tube 10 is also used for separating the pathological tissues from normal tissues of a human body so as to avoid the normal tissues from being curled into the outer cutter tube 10.
As shown in fig. 1 and 2, the cutting window 101 of the outer cutter tube 10 is disposed at the distal end of the outer cutter tube 10 and the outer side wall is inclined, the distal end and two sides of the cutting window 101 are non-cutting edges, and the proximal end of the cutting window 101 is provided with a cutting edge. As shown in fig. 2, a cutting window 101 of the outer cutter tube 10 is formed by cutting a cutter at the distal end of the outer cutter tube 10 in a direction from the proximal end to the distal end of the outer cutter tube 10, and the cutting window 101 is disposed at an angle, and the radial dimension of the distal end of the cutting window 101 is smaller than the radial dimension of the proximal end of the cutting window 101, so that the lesion tissue is easier to enter the outer cutter tube 10 from the cutting window 101.
After the distal end of the outer cutter tube 10 forms the cutting window 101, the distal end portion of the outer cutter tube 10 is closed and semi-spherical, so that the outer cutter tube 10 can be prevented from damaging human tissues during operation. The cutting window 101 includes a distal end 1011 and a proximal end 1012, the distal end 1011 is approximately a semicircular opening, the proximal end 1012 is a parabolic opening, the bottom of the parabolic opening is near the proximal end of the outer cutter tube 10, the cutting edge is disposed on the proximal end 1012 of the cutting window 101, and the distal end 1011 and the two sides of the cutting window 101 are not provided with cutting edges. When the outer cutter tube 10 rotates, the pathological tissue can be cut off through the cutting edge 101 arranged on the parabolic opening, and when the outer cutter tube 10 is not rotated, the pathological tissue can smoothly pass through the cutting window 101 without being cut off.
When the rotary cutter works, pathological tissues enter the outer cutter tube 10 from the cutting window 101 and are conveyed to the proximal end of the spiral part by winding of the spiral part, the distal end and two sides of the cutting window 101 are non-cutting edges, and the pathological tissues can be prevented from being cut off by the distal end of the cutting window 101 when the pathological tissues enter the outer cutter tube 10 from the cutting window 101, so that the pathological tissues can be pulled and continuously conveyed to the proximal end of the spiral blade 301, and planing of all the pathological tissues is completed.
The proximal end 1012 of the cutting window 101 is provided with a cutting edge, and after the lesion tissue is pulled by the helical blade 301 and continuously conveyed to the proximal end of the helical blade 301, the lesion tissue is separated from the normal tissue of the human body by the cutting edge of the cutting window 101, so as to prevent the normal tissue of the human body from being involved in the outer cutter tube 10. In this embodiment, when it is necessary to separate the diseased tissue from the normal tissue of the human body, the diseased tissue enters the outer cutter tube 10 and is pulled by the helical blade 301, so that the diseased tissue can be cut off from the human body by the cutting edge of the proximal end 1012 of the outer cutter tube 10 by rotating the outer cutter tube 10, and then the diseased tissue is entirely entered into the outer cutter tube 10 to be shaved by the shaving cutter 20.
The planing tool 20 is fixedly connected with the inner side wall of the outer tool pipe 10, and the rotating member 30 can rotate forward or backward relative to the outer tool pipe 10 and the planing tool 20, wherein the forward direction and the backward direction are relative rotation directions, if the forward direction is clockwise, the backward direction is anticlockwise, and if the forward direction is anticlockwise, the backward direction is clockwise. When the rotating member 30 rotates, the outer cutter tube 10 and the planing tool 20 are fixed, the outer side wall of the rotating member 30 is provided with a spiral part, the spiral part extends to the planing tool 20 along the axial direction of the rotating member 30, the rotating member 30 drives the spiral part to rotate together, and when the spiral part rotates, pathological tissues can be rolled and sent from the distal end of the outer cutter tube 10 to the proximal end so as to be rolled and sent to the planing tool 20 for planing.
In this embodiment, by providing the screw portion on the rotating member 30, the hard or soft lesion tissue can be conveyed to the proximal end of the screw portion without being cut off and pulled all the time when the screw portion rotates, and then the planing is performed by the planing tool 20 provided at the proximal end of the screw portion, so as to solve the problem that the hard tissue cannot be adsorbed by the negative pressure in the prior art, resulting in that the hard tissue cannot be planed, and improve the treatment effect of the endoscope.
Further, in the present embodiment, as shown in fig. 4 and 6, the spiral part is a spiral blade 301, the rotating member 30 is a rotating shaft, the spiral blade 301 is spirally disposed at the distal end of the rotating member 30 along the outer circumferential surface of the rotating member 30 and has a certain length, and when the rotating member 30 rotates, the spiral blade 301 is driven to rotate, so that the spiral blade 301 conveys the lesion tissue to the planing tool 20. The spiral blade 301 extends along the axial direction of the rotating member 30, the spiral blade 301 protrudes from the outer side wall of the rotating member 30, no cutting edge is provided on the spiral blade 301, and when the spiral blade 301 rotates to roll the lesion tissue, the spiral blade 301 does not cut off the lesion tissue, but pulls and continuously conveys the lesion tissue to the proximal end, and the planing is performed by the planing blade 20 provided at the proximal end of the spiral blade 301.
Preferably, as shown in fig. 6, the outer cutter tube 10 further comprises a barb portion 302, one end of the barb portion 302 is fixedly connected with the distal end of the spiral blade 301, and the other end of the barb portion 302 is bent toward the proximal end of the outer cutter tube 10. The barb portion 302 is disposed at the distal end of the spiral blade 301 and is located at the edge of the spiral blade 301, when the rotating member 30 starts to work, the barb portion 302 can hook the pathological tissue, so that the spiral blade 301 can fix the pathological tissue more quickly, then the spiral blade 301 rotates to wind the pathological tissue onto the spiral blade 301 for conveying, the free end of the barb portion 302 bends towards the proximal end of the outer cutter tube 10, the barb portion 302 is in a special bending form, and when the pathological tissue moves along the distal end to the proximal end of the spiral blade 301, the pathological tissue can be automatically separated from the barb portion 302, so that the continuous conveying towards the proximal end of the pathological tissue is realized. In this embodiment, the barb 302 may also have a barb, saw tooth, etc., and the free ends of the barb and saw tooth need to be bent toward the proximal end of the spiral blade 301 to achieve rapid capturing and fixing of the pathological tissue and automatic and smooth detachment.
Further, as shown in fig. 5 and 6, a notch 3011 is provided at the proximal end of the spiral blade 301, the notch 3011 divides the spiral blade 301 into two sections, a blade 3012 is provided at the notch 3011 of the spiral blade 301, and a planing blade 20 is provided at the notch 3011 for planing the lesion tissue in cooperation with the planing blade 20. As shown in fig. 6, a gap 3011 is disposed at a position near the end of the proximal end of the helical blade 301, the planing tool 20 is disposed at the gap 3011, the planing tool 20 is in a long strip shape and is sleeved on the rotating member 30, two ends of the planing tool 20 are fixedly connected with the inner wall of the outer tool tube 10, the planing tool 20 is axially provided with a blade, the fracture of the helical blade 301 where the gap 3011 is disposed is provided with a blade 3012, when the helical blade 301 rotates, the blade 3012 can be matched with the planing tool 20 to plane the pathological tissue, compared with the case where the planing tool 20 is used alone to plane the pathological tissue, in this embodiment, the blade 3012 at the gap 3011 of the helical blade 301 is matched with the planing tool 20 to plane the pathological tissue, so as to further improve the planing effect of the rotary cutting tool.
Preferably, the number of the notches 3011 is plural, and the plurality of notches 3011 are disposed at intervals along the axial direction of the helical blade 301 and are located at the proximal end of the helical blade 301, and one planing tool 20 is disposed at each notch 3011. Illustratively, assuming that the number of the notches 3011 is two, the two notches 3011 are disposed at the proximal end of the spiral blade 301 at intervals, the two notches 3011 divide the spiral blade 301 into three sections, and each notch 3011 of the spiral blade 301 is provided with a blade 3012, and each blade 3012 can shave the pathological tissue in cooperation with the shaving blade 20 at the notch 3011. When the rotary cutting tool works, the spiral blade 301 rolls the pathological tissue into the outer cutter tube 10, the pathological tissue is conveyed to the first notch 3011 of the spiral blade 301, the pathological tissue is cut and shaved through the cooperation of the shaving blade 20 and the cutting edge 3012 at the first notch 3011, the shaved pathological tissue can be conveyed to the proximal end of the spiral blade 301 through the spiral blade 301, the shaving blade 20 and the cutting edge 3012 at the first notch 3011 continue to shave the pathological tissue, the shaved pathological tissue is conveyed to the second notch 3011 of the spiral blade 301 through the spiral blade 301, and the shaved pathological assembly is further cut by the shaving blade 20 and the cutting edge 3012 at the second notch 3011, so that the shaved pathological tissue is prevented from being blocked in the outer cutter tube 10, and scraps are easier to discharge. It should be noted that the number of the notches 3011 and the planing blades 20 may be set according to the actual requirement, the number of the notches 3011 and the planing blades 20 is not particularly limited in this embodiment, and the above description is given by taking two notches 3011 as an example, and the number of the notches 3011 and the planing blades 20 may be set to three, four or more according to the actual requirement. In this embodiment, the shaving effect can be further improved by providing the plurality of notches 3011 and the plurality of shavers 20, so that the shaved tissue is prevented from blocking the cutters and being unable to be discharged in time, and the operation efficiency is improved.
Further, as shown in fig. 1, the endoscopic rotary cutter further includes an operation handle 40 and a suction mechanism, the operation handle 40 being provided at the proximal ends of the outer cutter tube 10 and the rotator 30. The operating handle 40 controls the rotation of the rotator 30. A sealing ring is provided between the proximal end of the outer cutter tube 10 and the operating handle 40, and is used for sealing a gap between the outer cutter tube 10 and the operating handle 40, so as to prevent liquid or shaved tissue of the outer cutter tube 10 from leaking out of the outer cutter tube 10 through the gap. The suction mechanism is arranged on the operating handle 40, the operating handle 40 is also provided with a suction channel which is communicated with the inside of the outer cutter tube 10 and is communicated with the outside through a pipeline, and when planing, the tissue planed in the outer cutter tube 10 is sucked into the suction channel of the operating handle 40 through the suction mechanism and then discharged through the pipeline communicated with the suction channel, so that the planed tissue is prevented from accumulating in the outer cutter tube 10 to block the outer cutter tube 10.
Example two
The difference between the present embodiment and the first embodiment is that the spiral portion has a different structure, and the same portion as that of the first embodiment in the present embodiment is not described in detail. In this embodiment, as shown in fig. 7, the spiral portion is a spiral opening 303 provided on the rotating member 30, and a certain length of the spiral opening 303 is provided on the outer peripheral surface of the distal end of the rotating member 30, and the spiral opening 303 is used to convey the lesion tissue to the planing tool 20 when the rotating member 30 rotates. By arranging the spiral opening 303 on the rotating member 30, the spiral opening 303 can also play a role in conveying pathological tissues to the proximal end of the rotating member 30 like the spiral blade 301, so that soft pathological tissues or hard pathological tissues can be pulled to the planing tool 20 for planing, the technical problem that the hard pathological tissues cannot be adsorbed by negative pressure for planing is solved, and the treatment effect of the endoscope is improved.
The planing tool 20 is disposed at the proximal end of the spiral opening 303, and the proximal end of the spiral opening 303 is provided with a cutting edge for planing pathological tissue in cooperation with the planing tool 20. The planing tool 20 is disposed at the proximal end of the spiral opening 303, the position of the spiral opening 303 where the planing tool 20 is disposed is provided with a cutting edge, and other positions of the spiral opening 303 are not provided with cutting edges, so that the pathological tissue can be smoothly conveyed to the proximal end of the spiral opening 303 without being cut off. When the rotating member 30 rotates, the cutting edge of the spiral opening 303 cooperates with the planing tool 20 to form a planing tool for planing the lesion tissue delivered to the proximal end of the spiral opening 303.
Preferably, as shown in fig. 7, the distal end of the rotation member 30 is provided with a barb portion 302, one end of the barb portion 302 is fixedly connected to the rotation member 30, and the other end of the barb portion 302 is bent toward the proximal end of the rotation member 30. The barb portion 302 is disposed near the distal end of the spiral opening 303, when the rotating member 30 starts to work, the barb portion 302 can hook the pathological tissue, so that the spiral opening 303 can fix the pathological tissue more quickly, then the pathological tissue is wound on the spiral opening 303 to be conveyed by the rotation of the spiral opening 303 along with the rotating member 30, the free end of the barb portion 302 bends towards the proximal end of the outer cutter tube 10, the barb portion 302 has a special bending form, and when the pathological tissue moves from the distal end to the proximal end of the spiral opening 303, the pathological tissue can be automatically separated from the barb portion 302, so that the pathological tissue is continuously conveyed towards the proximal end. In this embodiment, the rotating member 30 may be provided with a barb portion 302, barbs, saw teeth, and other structures, and the free ends of the barbs and saw teeth need to be bent toward the proximal end of the spiral opening 303 to achieve rapid capturing and fixing of the lesion tissue and automatic and smooth detachment.
Further, as shown in fig. 7, the rotating member 30 has a hollow structure, the suction mechanism is disposed at the proximal end of the rotating member 30, the suction channel on the operating handle 40 can also be communicated with the interior of the rotating member 30, the scraped lesion tissue and liquid can enter the interior of the rotating member 30 through the spiral opening 303 on the rotating member 30, then the scraped lesion tissue and liquid in the rotating member 30 are sucked into the suction channel of the operating handle 40 through the suction mechanism, and finally the tissue debris in the suction channel is discharged through the pipeline. In this embodiment, the rotating member 30 is set to be of a hollow structure, and the liquid can be pumped and discharged through the inside of the outer cutter tube 10 and the inside of the rotating member 30 at the same time, so as to improve the liquid discharge effect, avoid the blockage of the cutter caused by the incapability of timely discharging tissue fragments, and improve the operation effect.
Example III
An endoscope comprises an endoscope body and the endoscope rotary cutting tool according to the first embodiment or the second embodiment, wherein the endoscope body comprises an instrument channel, the structure of the endoscope rotary cutting tool is shown in fig. 1 to 7, the endoscope rotary cutting tool is arranged in the instrument channel, the endoscope rotary cutting tool is conveyed to a lesion position through the endoscope body, and the endoscope rotary cutting tool can extend out of the instrument channel through operation so as to shave lesion tissues. By arranging the rotary cutting tool on the endoscope, the problem that the hard tissues cannot be shaved due to the fact that the hard tissues cannot be adsorbed by means of negative pressure in the prior art can be solved, and the treatment effect of the endoscope is improved.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.
Claims (12)
1. An endoscopic rotary cutting tool, comprising:
the outer cutter tube is of a hollow structure, a cutting window which is obliquely arranged is arranged on the outer side wall of the distal end of the outer cutter tube, the distal end and two side edges of the cutting window are non-cutting edges, and a cutting edge is arranged at the proximal end of the cutting window;
the planing knife is fixedly arranged in the outer knife tube and is spaced from the distal end of the outer knife tube;
the rotating piece is arranged in the outer cutter tube, the outer side wall of the rotating piece and the inner side wall of the outer cutter tube are provided with a distance, the rotating piece is arranged along the circumferential direction of the outer cutter tube and is rotatable relative to the outer cutter tube, the outer side wall of the rotating piece is provided with a spiral part, the proximal end of the spiral part extends to the planing cutter, the outer diameter edge of the spiral part is a non-cutting edge, and when the rotating piece rotates, the spiral part is used for continuously rolling and conveying pathological tissues to the planing cutter for planing.
2. An endoscopic rotary cutting tool according to claim 1, wherein,
the spiral part is a spiral blade, the spiral blade is spirally arranged at the far end of the rotating piece along the peripheral surface of the rotating piece, and the rotating piece drives the spiral blade to rotate when rotating, so that the spiral blade conveys pathological tissues to the planing knife.
3. An endoscopic rotary cutting tool according to claim 2, wherein,
the outer knife tube further comprises a barb portion, one end of the barb portion is fixedly connected with the distal end of the spiral blade, and the other end of the barb portion is bent towards the proximal end of the outer knife tube.
4. An endoscopic rotary cutting tool according to claim 2, wherein,
the proximal end of the helical blade is provided with a notch, the helical blade is divided into two sections by the notch, the notch of the helical blade is provided with a blade, and the planing knife is arranged at the notch and is used for planing pathological tissues in cooperation with the planing knife.
5. An endoscopic rotary cutting tool according to claim 4, wherein,
the number of the notches is multiple, the multiple notches are arranged at intervals along the axial direction of the helical blade, and each notch is provided with one planing knife.
6. An endoscopic rotary cutting tool according to claim 1, wherein,
the spiral part is a spiral opening, the spiral opening is arranged on the outer peripheral surface of the far end of the rotating piece, and when the rotating piece rotates, the spiral opening is used for conveying pathological tissues to the planing knife.
7. An endoscopic rotary cutting tool according to claim 6, wherein,
the planing tool is arranged at the proximal end of the spiral opening, and a cutting edge for planing pathological tissues in cooperation with the planing tool is arranged at the proximal end of the spiral opening.
8. An endoscopic rotary cutting tool according to claim 6, wherein,
the distal end of the rotating member is provided with a barb portion, one end of the barb portion is fixedly connected with the rotating member, and the other end of the barb portion is bent towards the proximal end of the rotating member.
9. An endoscopic rotary cutting tool according to claim 6, wherein,
the device also comprises a suction mechanism;
the rotating piece is of a hollow structure, and the suction mechanism is arranged at the proximal end of the rotating piece and used for sucking and draining liquid through the rotating piece.
10. The endoscopic rotary cutting tool according to claim 1, wherein the distal end of said outer cutter tube is semi-spherical.
11. An endoscopic rotary cutting tool according to any one of claims 1 to 9, further comprising an operating handle disposed at the proximal ends of said outer cutter tube and said rotatable member.
12. An endoscope comprising the endoscopic rotary cutting tool of any one of claims 1-11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311475722.8A CN117503279A (en) | 2023-11-07 | 2023-11-07 | Endoscope rotary cutting tool and endoscope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311475722.8A CN117503279A (en) | 2023-11-07 | 2023-11-07 | Endoscope rotary cutting tool and endoscope |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117503279A true CN117503279A (en) | 2024-02-06 |
Family
ID=89765644
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311475722.8A Pending CN117503279A (en) | 2023-11-07 | 2023-11-07 | Endoscope rotary cutting tool and endoscope |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117503279A (en) |
-
2023
- 2023-11-07 CN CN202311475722.8A patent/CN117503279A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11446050B2 (en) | Tissue resectors with cutting wires, hand operated tissue resecting systems and associated methods | |
| US10376278B2 (en) | Tissue resectors with cutting wires, hand operated tissue resecting systems and associated methods | |
| EP3384857B1 (en) | Surgical cutting instrument with distal suction capability | |
| EP2667803B1 (en) | Surgical cutting instrument with distal suction capability | |
| JP4294900B2 (en) | Angled rotary tissue dissection device with flexible inner member | |
| US20080021488A1 (en) | Medical Instrument for Cutting Tissue | |
| JP2014158798A (en) | Catheter for aspirating, fragmenting, and removing material removable from blood vessel | |
| WO2015175292A1 (en) | Apparatus and method for cutting tissue | |
| JP2005501648A (en) | Flexible inner tubular member and rotating tissue cutting instrument having flexible inner tubular member | |
| CN117503279A (en) | Endoscope rotary cutting tool and endoscope | |
| EP3545891A2 (en) | Electrode blade for shavers | |
| CN114041850A (en) | Mechanical thrombus removing device | |
| US9943330B2 (en) | Tissue-removing catheter with asymmetric window |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |