CN113857780A - Machining method of reaming tool for minimally invasive surgery - Google Patents
Machining method of reaming tool for minimally invasive surgery Download PDFInfo
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- CN113857780A CN113857780A CN202111121968.6A CN202111121968A CN113857780A CN 113857780 A CN113857780 A CN 113857780A CN 202111121968 A CN202111121968 A CN 202111121968A CN 113857780 A CN113857780 A CN 113857780A
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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
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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
- A61B17/00234—Surgical instruments, devices or methods, e.g. tourniquets for minimally invasive surgery
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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
- A61B17/1637—Hollow drills or saws producing a curved cut, e.g. cylindrical
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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
- A61B17/00234—Surgical instruments, devices or methods, e.g. tourniquets for minimally invasive surgery
- A61B2017/00238—Type of minimally invasive operation
- A61B2017/00261—Discectomy
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Abstract
The invention provides a processing method of a reaming tool for minimally invasive surgery, which comprises the following steps: obtaining a first cylinder for machining a head of a reaming tool; machining from a first end of the first cylinder to a middle portion thereof to form a first lumen; carving the second end of the first cylinder to form a first cutting part at the periphery and a second cutting part at the middle part at the end part; the first cutting part is a plurality of first cutting blades arranged in an annular mode, the second cutting part is a plurality of second cutting blades arranged in a radial mode, and a through hole communicated with the first pipe cavity is formed between any two adjacent second cutting blades. By providing the second cutting portion with one or more cutting blades arranged radially, a one-time shaping of the operation channel can be achieved by the second cutting portion during the operation.
Description
Technical Field
The invention relates to the technical field of minimally invasive medical tools, in particular to a processing method of a reaming tool for minimally invasive surgery.
Background
The surgical treatment of the intervertebral disc protrusion gradually develops from the common open surgical treatment with large trauma to the endoscopic minimally invasive surgical treatment with a small incision of 8mm, which is a great technical progress. The minimally invasive surgery for intervertebral disc protrusion under the endoscope with the first generation of 8mm small incision is to perform step-by-step reaming on three-stage (the sizes of the three-stage (5 mm, 6.5mm and 7.5mm respectively)) trepan (front annular saw teeth) to establish a surgery channel. The minimally invasive surgery for intervertebral disc protrusion under the second generation of 8mm small incision endoscopes is to perform gradual reaming on five-stage (the sizes are respectively 4mm, 6mm, 7mm, 8mm and 9 mm) bone drills (the front ends are blunt, and the side surfaces are spirally milled to form edges) to establish a surgery channel.
The prior art, surgical treatment of intervertebral disc protrusion, typically includes both trephine and bone drill.
The realization process of the technical mode represented by the trepan is as follows: determining the position of a needle feeding point of the body surface through perspective; the puncture needle punctures to reach the positioning point of the articular process; the guide wire reaches the positioning point through the puncture needle tube; withdrawing the puncture needle; the gradual expansion pipe enters along the guide wire to expand the muscle tissue; the trepan protection sleeve enters along the expansion pipe; the expanding pipe is withdrawn, and simultaneously the three-stage trepan enters along the protective sleeve and saws and grinds the bone from thin to thick step by step; thereby completing the establishment of the surgical tunnel.
In addition, the implementation of the technical method represented by the bone drill is as follows: determining the position of a needle feeding point of the body surface through perspective; the puncture needle punctures to reach the positioning point of the articular process; the guide wire reaches the positioning point through the puncture needle tube; withdrawing the puncture needle; the gradual expansion pipe enters along the guide wire to expand the muscle tissue; withdrawing the expansion pipe; using a special locator to enter a locating point on the articular process along the guide wire; using the positioner to create a small hole in the articular process that enters the spinal canal; withdrawing the positioner; a guidewire enters the spinal canal along a foramen created on the articular process; reaming the bone from thin to thick step by step along guide wire by using a five-step bone drill; thereby completing the establishment of the surgical tunnel.
Disadvantages in applying the trepan technique include: the trepan front end is annular sawtooth, and at the in-process that saw ground, whether the sawtooth reachs or gets into the canalis spinalis and relies on doctor's experience of feeling completely, if the sawtooth still saw ground forward after reacing the canalis spinalis, the sawtooth harms nerve root very easily, causes medical accident even, so the security is poor, and the operation risk is high. The trepan operation mode is used, the guide wire is only positioned on the surface of the articular process, and in the trepan sawing and grinding process, the operation doctor hardly controls the positioning direction accurately, so that the position of an operation channel has deviation, and the trepan grinding process needs to be repeated for position correction, so that the damage to bones can be increased, the positioning accuracy is poor, and the sawing and grinding process is operated under blind vision.
Disadvantages in applying bone drill technology include: the positioning requirement is higher, and the X-ray fluoroscopy times are more. The five-stage bone drill side milling edge gradually expands and grinds, which is time-consuming, and the bone drill has extrusion tension on the periphery and the front end in the grinding process. Because the operation is performed under the local anesthesia, the time for the patient to endure the pain is longer, and the grinding process is performed under blind vision.
Disclosure of Invention
In order to solve the technical problems in the background technology, the invention provides a machining method of a reaming tool for minimally invasive surgery.
The invention provides a processing method of a reaming tool for minimally invasive surgery, which comprises the following steps:
obtaining a first cylinder for machining a head of a reaming tool;
machining from a first end of the first cylinder to a middle portion thereof to form a first lumen;
carving the second end of the first cylinder to form a first cutting part at the periphery and a second cutting part at the middle part at the end part; the first cutting part is a plurality of first cutting blades arranged in an annular mode, the second cutting part is a plurality of second cutting blades arranged in a radial mode, and a through hole communicated with the first pipe cavity is formed between any two adjacent second cutting blades.
Preferably, the first cylinder is machined from the first end to the middle thereof in a manner comprising: drilling and/or engraving.
Preferably, the method further comprises the following steps:
obtaining a second cylinder for machining the bottom of the reaming tool;
machining the second cylinder to form a second lumen extending through the second cylinder;
and welding and fixing the first end of the first cylinder and the first end of the second cylinder, and communicating the first pipe cavity with the second pipe cavity.
Preferably, the second cylinder is processed in a manner that includes: drilling and/or engraving.
Preferably, the method further comprises the following steps:
obtaining a base, wherein the middle part of the base is provided with a through hole;
and the second end of the second cylinder is fixedly welded with the base, and the second tube cavity is communicated with the through hole.
Preferably, the plurality of second cutting blades of the second cutting portion make an obtuse angle with an outer included angle of the first cylinder axis during the engraving process.
Preferably, the plurality of second cutting edges of the second cutting part have the same cutting direction during the engraving process.
Preferably, the included angle formed between any two adjacent second cutting edges on the second cutting part is equal.
Preferably, during the engraving process, the second cutting portion is provided with a notch for cutting off the middle part of the second cutting blade.
Preferably, during the engraving process, the second cutting part is provided with a guide hole which is coaxially arranged with the first cylinder and is communicated with the tube cavity.
Preferably, the second cutting edge of the second cutting portion is connected and smoothly transited to the first cutting edge of the first cutting portion during the engraving process.
The embodiment of the invention provides a processing method of a reaming tool for minimally invasive surgery. Through the processing mode of multi-segment segmented processing and integral connection, the head of the tool can meet the processing requirements of the complex multi-angle operation surface of the head by adopting an engraving processing method. According to the reaming tool manufactured by the method, the first cutting part and the second cutting part are arranged at the head part, the first cutting part is provided with a plurality of first cutting blades which are annularly arranged, the second cutting part is provided with a plurality of second cutting blades which are radially arranged, and the second cutting part can realize one-time forming of an operation channel in the operation process. The endoscope is arranged in the tube cavity of the tube body, the drilling condition of the operation can be observed in real time through the through hole formed between any two adjacent second cutting parts, and the visualization of the whole process of establishing the operation channel is realized.
Drawings
Fig. 1 is a schematic flow chart of a processing method of a reaming tool for minimally invasive surgery according to an embodiment of the present invention.
Fig. 2 is a general structural diagram of a reaming tool for minimally invasive surgery according to an embodiment of the invention.
Fig. 3 is a structural diagram of a reaming tool head for minimally invasive surgery according to an embodiment of the invention.
Fig. 4 is a top view of fig. 3.
Fig. 5 is a block diagram of a reaming tool head for minimally invasive surgery according to an embodiment of the present invention.
Fig. 6 is a top view of fig. 5.
Fig. 7 is a sectional view taken along line a-a of fig. 6.
Fig. 8 is a block diagram of a reaming tool head for minimally invasive surgery according to an embodiment of the present invention.
Detailed Description
Referring to fig. 1 and 2, a method for processing a reaming tool for minimally invasive surgery according to an embodiment of the present invention includes:
and S1, machining the head of the reaming tool.
Obtaining a first cylinder for machining a head A of a reaming tool;
processing the first cylinder from the first end to the middle of the first cylinder to form a first tube cavity which is a cavity body coaxially arranged with the first cylinder; specifically, the processing mode comprises the following steps: drilling and/or engraving;
carving the second end of the first cylinder to form a first cutting part at the periphery and a second cutting part at the middle part at the end part; the first cutting part is a plurality of first cutting blades which are annularly arranged, the second cutting part is a plurality of second cutting blades which are radially arranged, and a through hole communicated with the first pipe cavity is formed between any two adjacent second cutting blades.
And S2, machining the bottom of the reaming tool.
Obtaining a second cylinder for machining the bottom B of the reaming tool;
processing the second cylinder to form a second tube cavity penetrating through the second cylinder, wherein the second tube cavity is a cavity body coaxially arranged with the second cylinder; specifically, the processing mode comprises the following steps: drilling and/or engraving.
The first cylinder and the second cylinder have the same outer diameter, and the first lumen and the second lumen have the same inner diameter.
And S3, machining a base C of the reaming tool.
A base is obtained, the middle of which is provided with a through hole and the periphery of which is provided with a plurality of supporting claws.
The inner diameter of the through hole in the middle of the base is the same as that of the second tube cavity.
And S4, integrally assembling the reaming tool.
Welding and fixing the first end of the first cylinder and the first end of the second cylinder, wherein the first pipe cavity is communicated with the second pipe cavity; and the second end of the second cylinder is fixedly welded with the base, and the second tube cavity is communicated with the through hole. And after the welding and fixing are completed, grinding and polishing are carried out at the welding position.
In practical operation, the steps S1-S2-S3 do not have any sequence requirement, and the steps can be processed and manufactured respectively, and then the head, the bottom and the base of the reaming tool are assembled.
The embodiment of the invention provides a processing method of a reaming tool for minimally invasive surgery. Through the processing mode of multi-segment segmented processing and integral connection, the head of the tool can meet the processing requirements of the complex multi-angle operation surface of the head by adopting an engraving processing method.
In the embodiment of the present invention, referring to fig. 8, a notch 6 is formed between any two adjacent second cutting portions 3. The notch 6 can be machined. The gap 6 is formed along the second end of the first cylinder towards the middle. The shape of the notch 6 may be square, arc, or other smooth curve configuration.
In an embodiment of the present invention, referring to fig. 3-7, during machining of the reaming tool head 1, a first cylinder is obtained for machining the head of the reaming tool; machining from a first end of the first cylinder to a middle portion thereof to form a first lumen; processing the end part of the first cylinder by adopting an engraving method, and forming a first cutting part 2 positioned on the periphery and a second cutting part 3 positioned in the middle part at the end part; the first cutting part 2 is a plurality of first cutting blades 20 arranged in a ring shape, the second cutting part 3 is a plurality of second cutting blades 30 arranged in a radial direction, and a through hole communicated with the first pipe cavity is formed between any two adjacent second cutting blades 30.
In the engraving process of the head, referring to fig. 7, the second cutting edge 30 of the second cutting part 3 forms an obtuse angle with the external included angle α of the axis of the head 1, the second cutting part 3 forms the second cutting edge 30 arranged obliquely outward at the front end of the head 1, and the second cutting edge 30 protrudes obliquely outward from the front end of the head 1. By the second cutting blade 30 arranged radially at the front end of the second cutting part 3, a cutting and drilling conical surface similar to a cone can be formed during rotation, and the cutting and drilling can be performed obliquely on the bone.
During the engraving process of the head, the front end of the second cutting part 3 has a plurality of second cutting edges 30 arranged in a radial direction, the plurality of second cutting edges 30 are processed to have the same cutting direction, and the cutting directions of the plurality of second cutting edges 30 are all arranged towards a clockwise direction or a counterclockwise direction. Referring to fig. 3 and 5, the plurality of second cutting blades 30 at the front end of the second cutting part 3 all have a clockwise cutting direction, the front end of the head part 1 is aligned to a preset position of a bone in an operation process, and the plurality of second cutting blades 30 rotate clockwise to form a cutting and drilling conical surface together through the clockwise rotation of the head part 1, so that an effective and stable cutting and drilling effect can be achieved.
In the engraving process of the head, the front end of the second cutting part 3 is provided with a plurality of second cutting edges 30 which are radially arranged, an included angle is formed between any two adjacent second cutting edges 30, and the included angles are equal. Referring to fig. 3 and 4, the second cutting portion 3 is provided at the front end thereof with two second cutting blades 30, and an included angle formed between the two second cutting blades 30 is 180 degrees. Referring to fig. 5 and 6, three second cutting blades 30 are disposed at the front end of the second cutting part 3, and the included angles formed between every two second cutting blades 30 are 120 degrees.
In the structural design of the second cutting edge 30, the second cutting edge 30 for machining the second cutting part 3 is surrounded by two edge faces and a back edge face 300 therebetween, and is further disposed at the front end of the second cutting part 3. Referring to fig. 3, the second cutting edge 30 has a back facet 300 inclined in a cross section perpendicular to the diameter of the nose portion 1, one side higher and the other side lower, and the higher side thereof forms an effective cutting edge. In the case of having a plurality of second cutting blades 30, the back facet 300 on which the plurality of second cutting blades 30 are disposed is inclined in a clockwise or counterclockwise direction to achieve the plurality of second cutting blades 30 having the same cutting direction.
Compared with the traditional serrated cutting blade formed by two blade surfaces, the back blade surface 300 is arranged, so that the strength of the second cutting blade 30 can be greatly enhanced, and the safety of cutting and drilling is improved; and the inward and outward deformation and deformation of the second cutting blade 30 after bearing the radial cutting force can be effectively prevented, so that the service life of the second cutting blade 30 is prolonged.
In the above embodiment, the head 1 has the second cutting portion 3 at the front end, the second cutting portion 3 has one or more second cutting edges 30 arranged radially at the front end, and the specific number of the second cutting edges 30 and the specific structure of the second cutting portion 3 can be configured and processed according to the actual application requirements.
Regarding the number configuration of the second cutting edges 30 at the leading end of the second cutting part 3, the second cutting part 3 may be configured to have one second cutting edge 30 arranged radially, or, referring to fig. 3 and 4, the second cutting part 3 may be configured to have two second cutting edges 30 arranged radially, or, referring to fig. 5 and 6, the second cutting part 3 may be configured to have three second cutting edges 30 arranged radially; and so on.
Based on the fact that the front end of the second cutting portion 3 has one or more second cutting blades 30 arranged radially, in order to meet the requirement of supporting the second cutting blades 30, the second cutting portion 3 may be provided with a strip-shaped structure arranged radially, or, on the basis of the strip-shaped structure, may further extend towards the middle of the head portion 1 to form a plate-shaped structure.
Referring to fig. 7, by providing the second cutting portion 3 as a strip-like structure arranged radially, it is particularly necessary to provide a plurality of strip-like structures and connect them at the front end of the head portion 1 to form a whole to effectively and reliably support the second cutting blade 30. By providing the second cutting portion 3 as a radially arranged plate-like structure which is arranged in the head portion 1 along the axial direction of the head portion 1, the second cutting portion 3 having a predetermined dimension in the axial direction of the head portion 1, an effect of effectively and stably supporting the second cutting blade 30 can be achieved, and the second cutting portion 3 can be provided as one plate-like structure or a plurality of plate-like structures. In the case of having a plurality of plate-like structures, the plurality of plate-like structures may be connected integrally in the head 1, or relatively independently without creating a connection relationship in the head 1. Whichever configuration of the second cutting portion 3 is selected, it is preferable that a plurality of strip-like structures or plate-like structures of the second cutting portion 3 are uniformly arranged at the front end of the head portion 1.
In the process of providing the second cutting edge 30, in the case of the second cutting part 3 having a plurality of strip-shaped structures or plate-shaped structures, it is possible to select to provide one radially arranged cutting edge at the front end of one of the strip-shaped structures or plate-shaped structures, or to provide a plurality of second cutting edges 30 at the front end of a part of the second cutting part 3, or to provide the second cutting edges 30 at the front ends of a plurality of second cutting parts 3. In the case of having one plate-like structure, it is possible to provide one second cutting blade 30 at the front end of the second cutting part 3 of one plate-like structure.
According to the two setting forms of the second cutting part 3, the second cutting part 3 can be processed into a fan-shaped structure according to the actual application requirements, or further extends towards the middle part of the head part 1 on the basis of the fan-shaped structure, or; processing the head part into a trapezoidal structure, or further extending towards the middle part of the head part 1 on the basis of the trapezoidal structure; or processing into a heterosexual structure; and so on. The fan-shaped structure, the trapezoid structure and the extension structure thereof have better structural stability and support reliability.
As for the formation of the through-hole communicating with the lumen between the second cut part 3 and the head part 1, by machining the second cut part 3 to have a plurality of strip-like structures or plate-like structures, then the through-hole communicating with the lumen may be formed between the second cut part 3 and the head part 1 of any adjacent two strip-like or plate-like structures, thereby forming a plurality of through-holes. According to the structural arrangement of the cutting blades, a plurality of second cutting blades 30 are arranged at the front end of the second cutting part 3, and any two adjacent second cutting blades 30 also have the through hole.
During the operation, a sight glass is arranged in the lumen of the head part 1, and the drilling condition of the operation can be observed in real time through a plurality of through holes formed between the second cutting part 3 and the head part 1.
In the process of carving the head, referring to fig. 4 and 6, at least one notch for cutting the middle of the second cutting blade 30 is formed in the second cutting part 3. The slit has a first plane parallel to the axis of the tube and a second plane perpendicular to the cutting edge.
In the engraving process of the head, referring to fig. 4 and 6, a guide hole 5 is opened in the middle of the second cutting part 2, which is arranged coaxially with the head 1. The second cutting part 2 may be provided in a plurality of strip-shaped structures or plate-shaped structures, which may be connected at the center of the head part 1 to form a whole, and further, a guide hole 4 may be formed at the connection position coaxially with the head part 1, or a guide block may be provided at the connection position and a guide hole 5 may be formed thereon.
In the operation process, the guide hole 4 which is arranged coaxially with the head part 1 is arranged in the middle of the second cutting part 2, the guide hole 5 is used as a through hole of the operation guide wire, the operation guide wire passes through the guide hole 5, the positioning is simple, the positioning direction is not deviated, and the accurate control of the operation position can be realized.
According to the technical solution of the above embodiment, the head 1 has a first cutting portion 2 at the end surface of the front end thereof, the first cutting portion 2 having a plurality of first cutting edges 20 arranged annularly; the first cutting edge 20 of the first cutting portion 2 is disposed at the end surface of the front end of the head portion 1, and the second cutting edge 30 of the second cutting portion 3 is disposed to be inclined outward through the front end of the head portion 1 and protruded from the front end of the head portion 1, so that the second cutting edge 30 of the second cutting portion 3 is protruded from the first cutting edge 20 of the first cutting portion 2. During the operation, the second cutting edge 30 of the second cutting part 3 first acts on the bone to start drilling, and after drilling to a predetermined depth, the first cutting edge 20 of the first cutting part 2 acts on the bone to further enlarge the outer diameter of the drilled hole.
Referring to fig. 3 and 5, the plurality of first cutting edges 20 of the first cutting part 2 have the same cutting direction and are the same as the cutting direction of the plurality of second cutting edges 30 of the second cutting part 3. In a further embodiment, the plurality of first cutting edges 20 of the first cutting portion 2 provides a back facet which, viewed in the Z-direction in fig. 6, is obliquely arranged with one side higher and the other lower, the higher side forming the effective cutting edge; the back facets of the first plurality of cutting edges 20 are all inclined in either a clockwise or counterclockwise direction. In a further embodiment, the plurality of first cutting edges 20 of the first cutting portion 2 are higher near the inner wall of the head portion 1 and lower near the outer wall of the head portion 1, and the first cutting edges 20 are formed in an inclined structure with a high inside and a low outside on the first cutting portion 2.
According to the above described embodiment, the cutting edges of the second cutting portion 3 and the cutting edges of the first cutting portion 2 are arranged to connect and smoothly transition. Referring to fig. 1 and 3, a first cutting portion 2 is provided at an end surface of a front end of a head portion 1, the first cutting portion 2 has twelve first cutting edges 20 arranged in a ring shape, a second cutting portion 3 connected to the head portion 1 is provided in a lumen of the front end of the head portion 1, and the second cutting portion 3 has three second cutting edges 30 arranged in a radial direction. The three second cutting edges 30 of the second cutting portion 3 are connected with and smoothly transited to the three first cutting edges 20 of the first cutting portion 2, and it is understood that the second cutting edges 30 of the second cutting portion 3 are formed by extending the first cutting edges 20 of the first cutting portion 2 radially to the axial direction of the head portion 1.
In the embodiment of the invention, the problem that the bone drill or trepan for minimally invasive operation of intervertebral disc herniation needs to grind and expand the bone for multiple times step by step under the existing endoscope is solved, intervertebral foramen shaping can be completed at one time, and the intervertebral foramen can reach one area of the operation. The problem that the existing endoscopic minimally invasive operation trephine for herniated intervertebral disc cannot be accurately guided by a guide wire is solved, and the direction accuracy is improved. The problem of intervertebral disc protrusion minimal access surgery bone drill and trepan can not be completely visual under current scope is solved, through setting up the second cutting portion, its cutting blade of radially arranging can cut simultaneously and smash the sclerotin, the work area of clear visible instrument front end under the endoscope, at the rotatory grinding in-process of instrument, from articular process to anatomical structure level such as yellow ligament clearly visible, thoroughly solved bone drill or trepan because invisible and the operation risk that leads to in intervertebral foramen shaping process, the security of the security and the security of operation of apparatus have greatly been improved. Generally, the drilling tool for minimally invasive surgery provided by the embodiment of the invention has the characteristics of safety, accuracy, visibility and one-step forming, and is beneficial to realizing the manual intelligent endoscopic surgery in the future.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (10)
1. A machining method of a reaming tool for minimally invasive surgery is characterized by comprising the following steps:
obtaining a first cylinder for machining a head of a reaming tool;
machining from a first end of the first cylinder to a middle portion thereof to form a first lumen;
carving the second end of the first cylinder to form a first cutting part at the periphery and a second cutting part at the middle part at the end part; the first cutting part is a plurality of first cutting blades arranged in an annular mode, the second cutting part is a plurality of second cutting blades arranged in a radial mode, and a through hole communicated with the first pipe cavity is formed between any two adjacent second cutting blades.
2. The method of claim 1, wherein the step of machining the first cylindrical body from the first end to the middle thereof comprises: drilling and/or engraving.
3. The method for processing a reaming tool for minimally invasive surgery according to claim 1 or 2, further comprising:
obtaining a second cylinder for machining the bottom of the reaming tool;
machining the second cylinder to form a second lumen extending through the second cylinder;
and welding and fixing the first end of the first cylinder and the first end of the second cylinder, and communicating the first pipe cavity with the second pipe cavity.
4. The method of claim 3, wherein the second cylinder is machined by a method comprising: drilling and/or engraving.
5. The method of machining a reaming tool for minimally invasive surgery according to any one of claims 1 to 4, further comprising:
obtaining a base, wherein the middle part of the base is provided with a through hole;
and the second end of the second cylinder is fixedly welded with the base, and the second tube cavity is communicated with the through hole.
6. The method of claim 1 to 5, wherein the plurality of second cutting blades of the second cutting portion form an obtuse angle with an outer included angle of the axis of the first cylinder during the engraving process.
7. The method of processing a reaming tool for minimally invasive surgery according to any one of claims 1 to 5, wherein the plurality of second cutting blades of the second cutting portion have the same cutting direction during the carving process; preferably, the included angle formed between any two adjacent second cutting edges on the second cutting part is equal.
8. The method for processing a reaming tool for minimally invasive surgery according to any one of claims 1 to 5, wherein in the engraving process, a cut for cutting off the middle part of the second cutting blade is formed on the second cutting part; preferably, during the engraving process, the second cutting part is provided with a guide hole which is coaxially arranged with the first cylinder and is communicated with the tube cavity.
9. The method of any one of claims 1-5, wherein the second cutting edge of the second cutting portion is joined to and smoothly transitioned with the first cutting edge of the first cutting portion during the carving process.
10. The method of any one of claims 1-5, wherein a gap is formed between any two adjacent second cutting portions.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110820094 | 2021-07-20 | ||
| CN2021108200947 | 2021-07-20 |
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| CN113857780A true CN113857780A (en) | 2021-12-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111121968.6A Pending CN113857780A (en) | 2021-07-20 | 2021-09-24 | Machining method of reaming tool for minimally invasive surgery |
| CN202111123581.4A Pending CN113749728A (en) | 2021-07-20 | 2021-09-24 | Reaming tool for minimally invasive surgery |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111123581.4A Pending CN113749728A (en) | 2021-07-20 | 2021-09-24 | Reaming tool for minimally invasive surgery |
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2021
- 2021-09-24 CN CN202111121968.6A patent/CN113857780A/en active Pending
- 2021-09-24 CN CN202111123581.4A patent/CN113749728A/en active Pending
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| CN113749728A (en) | 2021-12-07 |
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