CN112494111A - Interventional rotational atherectomy device for arterial plaque - Google Patents
Interventional rotational atherectomy device for arterial plaque Download PDFInfo
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- CN112494111A CN112494111A CN202011454139.5A CN202011454139A CN112494111A CN 112494111 A CN112494111 A CN 112494111A CN 202011454139 A CN202011454139 A CN 202011454139A CN 112494111 A CN112494111 A CN 112494111A
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- Prior art keywords
- rotary grinding
- channel
- grinding
- sheath tube
- rotational
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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
- A61B17/32—Surgical cutting instruments
- A61B17/3205—Excision instruments
- A61B17/3207—Atherectomy devices working by cutting or abrading; Similar devices specially adapted for non-vascular obstructions
- A61B17/320758—Atherectomy devices working by cutting or abrading; Similar devices specially adapted for non-vascular obstructions with a rotating cutting instrument, e.g. motor driven
-
- 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
- A61B17/3205—Excision instruments
- A61B17/3207—Atherectomy devices working by cutting or abrading; Similar devices specially adapted for non-vascular obstructions
- A61B2017/320741—Atherectomy devices working by cutting or abrading; Similar devices specially adapted for non-vascular obstructions for stripping the intima or the internal plaque from a blood vessel, e.g. for endarterectomy
Abstract
The invention provides an interventional rotational grinding device for arterial plaque, which comprises a rotational grinding head, wherein the rotational grinding head consists of a three-petal rotational grinding elastic sheet, one end of the three-petal rotational grinding elastic sheet in the feeding direction is fixedly connected with a rotational grinding round head, the rotational grinding round head is fixedly connected to a rotational grinding sheath tube, and the rotational grinding sheath tube is positioned on the inner side of the three-petal rotational grinding elastic sheet and is respectively provided with a plurality of particle diluting holes and a microparticle recovery hole. Finally, the utility model is transported to the human body, thus greatly improving the practicability and safety of the device.
Description
Technical Field
The invention relates to the technical field of interventional medical instruments, in particular to an interventional rotational atherectomy device for arterial plaque.
Background
In the prior art, the rotational grinding component for the arterial rotational grinding interventional instrument with the application number of CN201920327791.7 comprises a driving rod, an expansion head and a rotational grinding head; the expansion head is divided into a left expansion head and a right expansion head, the two expansion heads are rotatably connected to the driving rod, a rough area is arranged on the surface of the expansion part of the expansion head, micro diamonds are embedded in the rough area, the rotary grinding head is fixedly connected to the far end of the driving rod and consists of a shell, a connector and a cutter head, the cutter head is fixedly connected in the connector, the connector is fixedly connected with the driving shaft, and one end of the shell is a cutting edge; the cutter head is provided with a plurality of uniformly distributed blades, the cutting surfaces of the blades are kept consistent, and the side surface of the cutter head is in a smooth arc shape; the inside of actuating lever, the head of revolving grinding runs through jointly and has the guide wire, is provided with the guide ring on the guide wire, and the arteriosclerosis plaque is got rid of that above-mentioned device can be more thorough, and the sectional area size of inflation head is variable, and the suitability is stronger, simultaneously, avoids the blood vessel to pierce through, has improved the operation security.
However, the rotational atherectomy assemblies for rotational atherectomy interventional instruments still have significant drawbacks during use: 1. the device is similar to the rotary grinding assembly disclosed in the prior art, and adopts rotary grinding heads with the specifications incapable of being adjusted, before intervening rotary grinding, the rotary grinding heads with different specifications are required to be selected according to the diameters of blood vessels at the rotary grinding part for in vitro replacement, and the rotary grinding heads cannot be adjusted again after entering a human body, so that the diameters of the arterial plaque rotary grinding heads are determined when the rotary grinding heads are selected in vitro, if the rotary grinding diameters are required to be adjusted again, the assembly can only be integrally moved out of the human body for replacement again, therefore, the rotary grinding heads of the assembly cannot be used for adaptively adjusting arterial blood vessels with different diameters, and meanwhile, if the rotary grinding heads are required to be further adjusted in the operation process, a large amount of replacement time is consumed, and the operation progress is influenced; 2. because the rotational grinding process can produce the hard rotational grinding microparticle of texture, if can't clear away the rotational grinding microparticle at the rotational grinding in-process, the microparticle can move to human each position through the blood vessel to generate easily and block and new thrombus in different positions, be unfavorable for patient's follow-up recovery, and above-mentioned device does not have effectual microparticle interception or recovery unit, thereby causes the rotational grinding to have certain risk.
Disclosure of Invention
The present invention is directed to an interventional rotational atherectomy device for arterial plaque that solves the problems set forth in the background above.
In order to achieve the purpose, the invention provides the following technical scheme:
an interventional type rotational grinding device for arterial plaque comprises a rotational grinding head, wherein the rotational grinding head consists of a three-petal type rotational grinding elastic sheet, a carborundum powder coating is coated on the outer surface of the front end of the moving direction of the three-petal type rotational grinding elastic sheet, one end of the feeding direction of the three-petal type rotational grinding elastic sheet is fixedly connected with a rotational grinding round head, the rotational grinding round head is fixedly connected to a rotational grinding sheath pipe, one end, far away from the rotational grinding round head, of the three-petal type rotational grinding elastic sheet is fixedly connected to one side of a telescopic sleeve, the telescopic sleeve is movably sleeved on the rotational grinding sheath pipe, a propelling sleeve is further fixedly installed on the rotational grinding sheath pipe, the telescopic sleeve is movably arranged in a propelling chamber formed by the rotational grinding sheath pipe and the propelling sleeve, and a plurality of propelling holes communicated with a propelling channel are formed in the bottom of the propelling chamber;
the rotary grinding sheath pipe is positioned on the inner side of the three-petal rotary grinding elastic sheet and is respectively provided with a plurality of particle dilution holes and micro-particle recovery holes, the particle dilution holes are communicated with a diluent injection channel, and the micro-particle recovery holes are communicated with a recovery channel;
the propelling channel, the diluent injection channel and the recovery channel are all arranged inside the rotary grinding sheath tube and extend to the outside of the body through the rotary grinding sheath tube, and one end of the rotary grinding sheath tube, which is positioned outside the human body, is operated through the rotating mechanism.
Preferably, the three-petal type rotary grinding elastic sheet is arranged between the rotary grinding round head and the telescopic sleeve in an annular array mode along the axes of the rotary grinding round head and the telescopic sleeve.
Preferably, grind the button head soon and keep away from and grind sheath pipe one end soon and pass through cavity seal wire and closed gasbag intercommunication, the air feed channel intercommunication that cavity seal wire and the inside seting up of sheath pipe soon, air feed channel extends to external through grinding the sheath pipe soon.
Preferably, the end of the rotary grinding sheath pipe outside the human body is provided with a liquid supply device communicated with the propelling channel and the diluent injection channel respectively, and the end of the rotary grinding sheath pipe outside the human body is provided with a gas supply device communicated with the gas supply channel.
Preferably, the microparticle recovery holes and the microparticle dilution holes are arranged in an annular array mode along the circular cross section direction of the rotary grinding sheath pipe.
Preferably, the diameter of the recovery channel is 2mm, and the diameters of the propulsion channel, the diluent injection channel and the gas supply channel are all 0.8 mm.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the three-petal type rotary grinding elastic sheet, the three-petal type rotary grinding elastic sheet is pulled through the movement of the telescopic sleeve, so that the three-petal type rotary grinding elastic sheet forms different radians, and the rotary grinding diameter of the rotary grinding head is changed;
2. according to the invention, the rotational grinding mode of the rotational grinding head is further changed through the arrangement of the three-petal rotational grinding elastic sheet, the conventional rotational grinding mode can only drive the rotational grinding head to rotationally grind from the near end to the far end of the blood vessel plaque, but the rotational grinding head can be moved to the narrow plaque, the blood vessel plaque is removed from the plaque through the gradual expansion of the three-petal rotational grinding elastic sheet, the normal blood vessel wall is not easily injured by the removal mode, and the safety is higher;
3. the blood vessel patch removal device can remove blood vessel patches, and microparticles generated by rotational grinding can be accommodated in an expansion area formed in the three-petal type rotational grinding elastic sheet, and diluted by diluent pumped out from the particle dilution hole, finally enter the recovery channel through the microparticle recovery hole and finally output to a human body, so that the microparticles are effectively prevented from moving through the blood vessel, further, the formation of blockage and new thrombus is prevented, and the safety of the rotational grinding is greatly improved.
According to the invention, through the arrangement of the three-petal type rotary grinding elastic sheet, the rotary grinding head can be ensured to be adaptively adjusted in blood vessels with different diameters, the rotary grinding mode of the rotary grinding head is changed, the blood vessel plaque is removed from the plaque through the gradual expansion of the three-petal type rotary grinding elastic sheet, and the microparticles generated by rotary grinding can be accommodated in the internal area of the three-petal type rotary grinding elastic sheet and diluted by matching with a diluent to be finally conveyed to a human body, so that the practicability and the safety of the device are greatly improved.
Drawings
FIG. 1 is a schematic view of a prior art rotary grinding head in operation;
FIG. 2 is a perspective view of the overall structure of the rotational grinding head assembly of the present invention;
FIG. 3 is a schematic view of the working state of the rotational atherectomy head of the present invention;
FIG. 4 is a schematic view of the telescopic tube mounting structure of the present invention;
FIG. 5 is a schematic diagram of the expansion of the three-petal type rotational grinding spring plate to the extreme position according to the present invention;
FIG. 6 is a schematic diagram of the expansion process of the three-petal type rotational grinding spring plate of the present invention;
FIG. 7 is a schematic view of the three-petal type rotational grinding spring plate of the present invention shrinking to the extreme position;
FIG. 8 is a schematic view of the propulsion chamber of the present invention;
FIG. 9 is a cross-sectional view of the rotational-milled sheath of the present invention.
In the figure: the device comprises a rotary grinding head 1, a three-petal rotary grinding elastic sheet 2, a carborundum powder coating 3, a rotary grinding round head 4, a rotary grinding sheath tube 5, a telescopic tube 6, a propelling sleeve 7, a propelling chamber 8, a propelling channel 9, a propelling hole 10, a particle diluting hole 11, a microparticle recovering hole 12, a diluent injection channel 13, a recovering channel 14, a hollow guide wire 15, a closed air bag 16, an air supply channel 17, a blood vessel 18 and a blood vessel plaque 19.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example (b):
referring to fig. 1-9, the present invention provides a technical solution:
an interventional rotational grinding device for arterial plaque comprises a rotational grinding head 1, wherein the rotational grinding head 1 is composed of a three-petal rotational grinding elastic sheet 2, the outer surface of the front end of the moving direction of the three-petal rotational grinding elastic sheet 2 is coated with a carborundum powder coating 3, one end of the feeding direction of the three-petal rotational grinding elastic sheet 2 is fixedly connected with a rotational grinding round head 4, the rotational grinding round head 4 is fixedly connected onto a rotational grinding sheath tube 5, one end, far away from the rotational grinding round head 4, of the three-petal rotational grinding elastic sheet 2 is fixedly connected onto one side of a telescopic sleeve 6, the telescopic sleeve 6 is movably sleeved on the rotational grinding sheath tube 5, a propelling sleeve 7 is further fixedly installed on the rotational grinding sheath tube 5, the telescopic sleeve 6 is movably arranged in a propelling chamber 8 formed by the rotational grinding sheath tube 5 and the propelling sleeve 7, and a plurality of propelling holes 10 communicated with a propelling channel 9 are formed in the bottom;
through the arrangement of the carborundum powder coating 3, when the carborundum powder coating 3 contacts the vascular plaque 19 to rotate in the high-speed rotation process of the rotary grinding sheath tube 5, the hard-textured vascular plaque 19 can be pulverized by the surface-applied diamond powder coating 3, then the blood vessel 18 is dredged, the extrusion liquid is injected into the propulsion channel 9, so that the extrusion liquid flows out from the propulsion hole 10 and enters the propulsion chamber 8, the pressure in the propulsion chamber 8 is increased to push the telescopic sleeve 6 to extend, the extension of the telescopic sleeve 6 is utilized to extrude the three-petal type rotary grinding elastic sheet 2, thereby changing the curvature radian of the three-petal type rotary grinding elastic sheet 2, further achieving the function of changing the rotary grinding diameter of the rotary grinding head 1, the interventional rotational atherectomy device is delivered to the site to be rotationally abraded through the sheath tube and is stabilized by the sheath tube while the rotational atherectomy sheath 5 rotates at high speed.
The rotary grinding sheath tube 5 is positioned on the inner side of the three-petal rotary grinding elastic sheet 2 and is respectively provided with a plurality of particle dilution holes 11 and micro-particle recovery holes 12, the particle dilution holes 11 are communicated with a diluent injection channel 13, and the micro-particle recovery holes 12 are communicated with a recovery channel 14;
through injecting the diluent in to diluent injection passageway 13, thereby deliver to internal with the diluent, finally flow into in the blood vessel 18 through granule dilution hole 11, owing to can produce the hard granule of texture hardness at high-speed rotational grinding in-process, can dilute the particulate matter through the diluent, owing to constantly inject the diluent, and adsorb at recovery channel 14 through external negative pressure suction device, thereby it is internal to shift out the diluent that has mixed the microparticle, thereby effectively prevent to grind the microparticle that generates soon and get into the human body.
The propelling channel 9, the diluent injection channel 13 and the recovery channel 14 are all arranged inside the rotary grinding sheath tube 5 and extend to the outside of the body through the rotary grinding sheath tube 5, one end of the rotary grinding sheath tube 5, which is positioned outside the human body, is operated through the rotating mechanism, and the rotary grinding sheath tube 5 is driven to rotate at a high speed through the rotating mechanism, so that the rotary grinding head 1 is driven to rotate at a high speed.
Preferably, the three-petal type rotational grinding elastic sheet 2 is arranged between the rotational grinding round head 4 and the telescopic sleeve 6 in an annular array mode along the axes of the rotational grinding round head and the telescopic sleeve.
Preferably, one end of the rotary grinding round head 4, which is far away from the rotary grinding sheath tube 5, is communicated with the closed air bag 16 through the hollow guide wire 15, the hollow guide wire 15 is communicated with an air supply channel 17 formed in the rotary grinding sheath tube 5, and the air supply channel 17 extends to the outside of the body through the rotary grinding sheath tube 5, in the embodiment, the hollow guide wire 15 is movably connected with the rotary grinding round head 4, in the process that the rotary grinding round head 4 rotates at a high speed along with the rotary grinding head 1, the closed air bag 16 keeps a static state, and the closed air bag 16 further blocks the blood vessel 18 to prevent micro particles from entering the inside of the blood vessel 18.
Preferably, the end of the rotational grinding sheath 5 outside the human body is provided with a liquid supply device communicated with the propelling channel 9 and the diluent injection channel 13, and the end of the rotational grinding sheath 5 outside the human body is also provided with a gas supply device communicated with the gas supply channel 17, diluent and pushing liquid are respectively supplied into the human body through the liquid supply device, so that corresponding operation is carried out, and the closed airbag 16 is expanded by supplying gas into the gas supply channel 17.
Preferably, the microparticle recovery holes 12 and the microparticle dilution holes 11 are arranged in an annular array along the circular cross-section of the rotational grinding sheath 5.
Preferably, the diameter of the recovery channel 14 is 2mm, and the diameters of the propulsion channel 9, the diluent injection channel 13 and the gas supply channel 17 are all 0.8mm, so that the microparticles can be smoothly discharged through the recovery channel 14.
The working principle is as follows: the method comprises the following steps: the blood vessel channel is established at the groin vein, so that the guide wire enters the blood vessel of a human body through the channel, the guide wire is controlled to reach the blockage position of the blood vessel plaque 19 under the guidance of the imaging equipment, the sheath tube is penetrated on the guide wire, the sheath tube is conveyed to the blockage position of the blood vessel plaque 19 under the guidance of the guide wire, and at the moment, the guide wire is withdrawn, and the establishment of the sheath tube channel is completed;
step two: conveying the rotational grinding head 1 of the interventional rotational grinding device for the arterial plaque to the blockage position of the vascular plaque 19 along a channel established by a sheath, extending the rotational grinding head 1 out of the sheath, opening the rotating mechanism, and driving the rotational grinding sheath 5 to rotate at a high speed by using the rotating mechanism so as to drive the rotational grinding head 1 to rotate at a high speed, and performing rotational grinding on the vascular plaque 19 by using the rotation of the rotational grinding head 1;
step three: if a certain narrow channel is reserved in the middle of the blood vessel plaque 19, the rotational grinding head 1 performs rotational grinding dredging in the middle of the blood vessel plaque 19 through slow rotational grinding feeding of the rotational grinding head 1, when the carborundum powder coating 3 of the three-petal rotational grinding elastic sheet 2 enters the blood vessel plaque 19, extrusion liquid is injected into the pushing channel 9 at the moment to drive the three-petal rotational grinding elastic sheet 2 to slowly expand, the three-petal rotational grinding elastic sheet 2 is utilized to slowly expand to grind the blood vessel plaque from the inside of the blood vessel plaque 19, and the risk that a normal blood vessel is injured in a traditional rotational grinding mode is overcome;
step four: in the rotary grinding process, diluent is released to the rotary grinding position through the diluent injection channel 13, so that microparticles generated by rotation are diluted, enter the recovery channel 14 through the microparticle recovery hole 12, are finally moved out of a human body, and are effectively prevented from moving through blood vessels, so that blockage and formation of new thrombus are prevented, and the safety of rotary grinding is greatly improved;
step five: after the rotational abrasion is finished, the interventional rotational abrasion device of the arterial plaque is retracted into the sheath tube, and finally the sheath tube is moved out of the human body together, so that the interventional rotational abrasion process of the arterial plaque is finished.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. An interventional rotational atherectomy device for arterial plaque, comprising a rotational atherectomy head (1), characterized in that: the rotary grinding head (1) consists of a three-petal rotary grinding elastic sheet (2), the outer surface of the front end of the three-petal rotary grinding elastic sheet (2) in the moving direction is coated with a carborundum powder coating (3), one end of the three-petal type rotary grinding elastic sheet (2) in the feeding direction is fixedly connected with the rotary grinding round head (4), the rotary grinding round head (4) is fixedly connected to the rotary grinding sheath tube (5), one end of the three-petal rotary grinding elastic sheet (2) far away from the rotary grinding round head (4) is fixedly connected to one side of the telescopic sleeve (6), the telescopic sleeve (6) is movably sleeved on the rotary grinding sheath tube (5), a propelling sleeve (7) is fixedly arranged on the rotary grinding sheath tube (5), the telescopic sleeve (6) is movably arranged in a propelling chamber (8) formed by the rotary grinding sheath tube (5) and the propelling sleeve (7), the bottom of the propulsion chamber (8) is provided with a plurality of propulsion holes (10) communicated with the propulsion channel (9);
the rotary grinding sheath tube (5) is positioned on the inner side of the three-petal rotary grinding elastic sheet (2) and is respectively provided with a plurality of particle dilution holes (11) and micro-particle recovery holes (12), the particle dilution holes (11) are communicated with a diluent injection channel (13), and the micro-particle recovery holes (12) are communicated with a recovery channel (14);
impel passageway (9), diluent injection passageway (13) and retrieve passageway (14) and all set up in the sheath pipe (5) of whetting a knife or a sword and extend to external through the sheath pipe (5) of whetting a knife or a sword, it is external that the sheath pipe (5) of whetting a knife or a sword is located human outside one end and operates through rotary mechanism.
2. An interventional rotational atherectomy device according to claim 1, wherein: the three-petal type rotary grinding elastic sheet (2) is arranged between the rotary grinding round head (4) and the telescopic sleeve (6) in an annular array mode along the axes of the rotary grinding round head and the telescopic sleeve.
3. An interventional rotational atherectomy device according to claim 1, wherein: the rotary grinding round head (4) is far away from one end of the rotary grinding sheath tube (5) and is communicated with the closed air bag (16) through a hollow guide wire (15), the hollow guide wire (15) is communicated with an air supply channel (17) which is arranged inside the rotary grinding sheath tube (5), and the air supply channel (17) extends to the outside of the body through the rotary grinding sheath tube (5).
4. An interventional rotational atherectomy device according to claim 3, wherein: the rotary grinding sheath tube (5) is located at one end outside the human body and is provided with a liquid supply device communicated with the propelling channel (9) and the diluent injection channel (13) respectively, and the rotary grinding sheath tube (5) is located at one end outside the human body and is further provided with a gas supply device communicated with a gas supply channel (17).
5. An interventional rotational atherectomy device according to claim 1, wherein: and the microparticle recovery holes (12) and the microparticle dilution holes (11) are arranged in an annular array manner along the circular cross section direction of the rotary grinding sheath pipe (5).
6. An interventional rotational atherectomy device according to claim 3, wherein: the diameter of the recovery channel (14) is 2mm, and the diameters of the propulsion channel (9), the diluent injection channel (13) and the gas supply channel (17) are all 0.8 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011454139.5A CN112494111A (en) | 2020-12-10 | 2020-12-10 | Interventional rotational atherectomy device for arterial plaque |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011454139.5A CN112494111A (en) | 2020-12-10 | 2020-12-10 | Interventional rotational atherectomy device for arterial plaque |
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| Publication Number | Publication Date |
|---|---|
| CN112494111A true CN112494111A (en) | 2021-03-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011454139.5A Pending CN112494111A (en) | 2020-12-10 | 2020-12-10 | Interventional rotational atherectomy device for arterial plaque |
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| CN (1) | CN112494111A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117442299A (en) * | 2023-12-20 | 2024-01-26 | 北京华脉泰科医疗器械股份有限公司 | Vascular access rotational grinding mechanism and vascular access establishing device |
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| CN210871882U (en) * | 2019-09-24 | 2020-06-30 | 上海君联医疗设备有限公司 | Rotary grinding catheter with balloon stabilizing system |
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| US5556408A (en) * | 1995-04-27 | 1996-09-17 | Interventional Technologies Inc. | Expandable and compressible atherectomy cutter |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117442299A (en) * | 2023-12-20 | 2024-01-26 | 北京华脉泰科医疗器械股份有限公司 | Vascular access rotational grinding mechanism and vascular access establishing device |
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Application publication date: 20210316 |