CN116473663A - Top end structure of bronchial smooth muscle radiofrequency ablation catheter - Google Patents
Top end structure of bronchial smooth muscle radiofrequency ablation catheter Download PDFInfo
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- CN116473663A CN116473663A CN202310424020.0A CN202310424020A CN116473663A CN 116473663 A CN116473663 A CN 116473663A CN 202310424020 A CN202310424020 A CN 202310424020A CN 116473663 A CN116473663 A CN 116473663A
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- 238000007674 radiofrequency ablation Methods 0.000 title claims abstract description 40
- 210000002460 smooth muscle Anatomy 0.000 title claims abstract description 24
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 31
- 239000010935 stainless steel Substances 0.000 claims abstract description 29
- 210000005239 tubule Anatomy 0.000 claims abstract description 18
- 238000004804 winding Methods 0.000 claims description 17
- 238000003466 welding Methods 0.000 claims description 8
- 230000002146 bilateral effect Effects 0.000 claims description 2
- 230000006835 compression Effects 0.000 claims 1
- 238000007906 compression Methods 0.000 claims 1
- 208000006673 asthma Diseases 0.000 description 10
- 238000011282 treatment Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 8
- 210000000621 bronchi Anatomy 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 208000000059 Dyspnea Diseases 0.000 description 3
- 206010013975 Dyspnoeas Diseases 0.000 description 3
- 208000030603 inherited susceptibility to asthma Diseases 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 229940088597 hormone Drugs 0.000 description 2
- 239000005556 hormone Substances 0.000 description 2
- 102000004127 Cytokines Human genes 0.000 description 1
- 108090000695 Cytokines Proteins 0.000 description 1
- 208000008238 Muscle Spasticity Diseases 0.000 description 1
- 210000005091 airway smooth muscle Anatomy 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000010485 coping Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000003902 lesion Effects 0.000 description 1
- 230000008506 pathogenesis Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000011297 radiofrequency ablation treatment Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000004202 respiratory function Effects 0.000 description 1
- 230000016160 smooth muscle contraction Effects 0.000 description 1
- 208000018198 spasticity Diseases 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
- A61B18/14—Probes or electrodes therefor
- A61B18/1492—Probes or electrodes therefor having a flexible, catheter-like structure, e.g. for heart ablation
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00053—Mechanical features of the instrument of device
- A61B2018/00059—Material properties
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00315—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for treatment of particular body parts
- A61B2018/00541—Lung or bronchi
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00571—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for achieving a particular surgical effect
- A61B2018/00589—Coagulation
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00636—Sensing and controlling the application of energy
- A61B2018/00696—Controlled or regulated parameters
- A61B2018/00714—Temperature
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
- A61B18/14—Probes or electrodes therefor
- A61B2018/1405—Electrodes having a specific shape
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change
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Abstract
The invention discloses a top end structure of a bronchial smooth muscle radio frequency ablation catheter, which belongs to the technical field of medical radio frequency ablation, and comprises a stainless steel tubule, wherein a tail electrode limit column is fixedly arranged at one end of the stainless steel tubule, a plurality of electrode plates are clamped on the tail electrode limit column, a head electrode limit column is arranged at the other end of the stainless steel tubule, the electrode plates are inserted into the head electrode limit column and freely move in the head electrode limit column, an outer sleeve is fixedly arranged at one end of the head electrode limit column, the stainless steel tubule is inserted from one end of the head electrode limit column and extends to the other end of the outer sleeve through the outer sleeve, and a clamping component is arranged on the outer sleeve, so that the adaptability of the structure when different electrode plates are met can be effectively enhanced, the function of automatically reverting the electrode plates in the radio frequency ablation catheter to an initial shape can be realized, and the practical safety of the structure is ensured.
Description
Technical Field
The invention relates to the technical field of medical radio frequency ablation, in particular to a top end structure of a bronchial smooth muscle radio frequency ablation catheter.
Background
Bronchial asthma (asthma for short) is a common and frequently occurring disease seriously jeopardizing health, and in china, asthmatics are expected to be around 3500 Mo Zuo. One of the main pathogenesis of asthma is airway smooth muscle contraction and airway cramping, which in turn leads to reduced airway diameter, airflow obstruction and dyspnea. Currently, the main treatment means of asthma is to inhale hormone and an airway dilator through the airway to relieve dyspnea; however, in severe asthmatics, the bronchial smooth muscle thickens, resulting in a reduced bronchial inner diameter and restricted respiratory function; thickened smooth muscle also secretes excessive cytokines, further leading to spasticity of the airways, and the effects of inhaled hormones and airway dilators become less and less effective with prolonged treatment time. In summary, the main means of current asthma treatment is drug treatment, and for severe asthma patients, the curative effect is very limited, and a brand new and effective treatment method is urgently needed to reduce the thickness of smooth muscle, enlarge the inner diameter of the airway and relieve the dyspnea of patients.
In recent years, a brand new minimally invasive surgical mode for treating bronchial asthma through electrode radio frequency is gradually favored by doctors and patients. The top of the current electrode radio frequency catheter is designed by 4 electrode plates with certain length, two ends are welded into a whole, and the middle part is provided with a stainless steel wire with a coating; the stretching of the stainless steel wire realizes the opening and closing of the electrode plates, and forms a treatment part similar to a sphere. Electricity with certain strength is conducted to 4 electrode plates through stainless steel wires, and after contacting the tracheal wall, a closed loop is formed through a human body.
Based on the above, the present inventors found that:
certain disadvantages may exist in the treatment of bronchial asthma by mechanical energy in the form of radio frequency ablation;
1. the number of the motor sheets which can be connected with the same radio frequency ablation catheter is a fixed value, and when the number of the electrode sheets in the radio frequency ablation catheter needs to be regulated, a new radio frequency ablation catheter needs to be replaced for use, so that the use effect of the radio frequency ablation catheter in the case of coping with different electrode sheets is reduced;
2. when the electrode plate in the radio frequency ablation catheter is deformed into an ellipsoidal shape or a hammer shape, the electrode plate does not have the capability of automatically reverting to an initial shape, and therefore certain friction obstruction can be generated between the electrode plate in the radio frequency ablation catheter and the inner wall of a bronchus, and the practical safety of the device is further affected.
Accordingly, in view of the above, research and improvement are performed on the existing structure, and the tip structure of the bronchial smooth muscle radiofrequency ablation catheter is provided, so as to achieve the purpose of more practical value.
Disclosure of Invention
1. Technical problem to be solved
Aiming at the problems existing in the prior art, the invention aims to provide a top end structure of a bronchial smooth muscle radio frequency ablation catheter, which can effectively enhance the adaptability of the structure when the use requirements of different electrode plates are met, improve the use effect of the device, simultaneously realize the function of automatically reverting the electrode plates in the radio frequency ablation catheter to the initial shape, avoid the friction obstruction between the electrode plates in the radio frequency ablation catheter and the inner wall of the bronchus, and ensure the practical safety of the structure.
2. Technical proposal
In order to solve the problems, the invention adopts the following technical scheme.
The top end structure of the bronchial smooth muscle radio frequency ablation catheter comprises a stainless steel thin tube, wherein a tail electrode limit column is fixedly arranged at one end of the stainless steel thin tube, a plurality of electrode plates are clamped on the tail electrode limit column, a head electrode limit column is arranged at the other end of the stainless steel thin tube, the electrode plates are inserted into the head electrode limit column and freely move in the head electrode limit column, an outer sleeve is fixedly arranged at one end of the head electrode limit column, the stainless steel thin tube is inserted from one end of the head electrode limit column and extends to the other end of the outer sleeve through the outer sleeve, and a clamping component is arranged on the outer sleeve;
the clamping assembly comprises an elastic clamping piece, a pull rope is arranged at the top end of the elastic clamping piece, a plurality of fixed pulleys are arranged on the side face of the pull rope, and a winding disc is connected after the fixed pulleys turn.
Furthermore, a plurality of parallel alignment bayonets are formed at one end of the stainless steel tubule, and the alignment bayonets and the elastic clamping pieces form clamping connection.
Further, the tail electrode limiting column comprises an arc-shaped head, the arc-shaped head is fixedly connected with a clamping head through electric welding, and one end of the clamping head is fixedly provided with a binding sleeve through electric welding.
Furthermore, eight clamping holes are formed in the clamping head, and one end of the electrode plate penetrates through the binding sleeve and is clamped with the clamping holes at the corresponding positions in a one-to-one correspondence mode.
Further, an oval column head is fixedly arranged at one end of the electrode plate, which is far away from the tail electrode limit column, a first through hole which is in sliding connection with the electrode plate is formed at one end of the interior of the head electrode limit column, a second through hole which is in sliding connection with the oval column head is formed at the other end of the interior of the head electrode limit column, and the second through hole is mutually communicated with the first through hole.
Further, a plugging disc is fixedly arranged in the second through hole, and a first spring piece is fixedly connected between the plugging disc and the oval column head.
Further, the elastic clamping piece comprises two limit brackets which are arranged in bilateral symmetry, two clamping strips are connected to the inner sides of the limit brackets in a sliding mode, a second spring piece is sleeved between the two clamping strips and positioned on the inner sides of the limit brackets, a pressing frame is connected to the inner sides of the limit brackets in a sliding mode and in contact with the clamping strips, and the pressing frame is inserted into the limit brackets and is kept to slide freely.
Further, the one end of pressure frame is fixed and is equipped with the rack, rack sliding connection is inside spacing support, just the rack meshing is connected with the gear, the one end of gear is fixed and is equipped with concentric shaft winding wheel, the one end of stay cord is convoluteed in the side of concentric shaft winding wheel.
Further, the two racks are centrally symmetrical around the gear piece.
3. Advantageous effects
Compared with the prior art, the invention has the advantages that:
(1) This scheme, when radio frequency ablation pipe is practical, pass the position cover with the electrode slice and block into the screens head in, then weld arc head, screens head and position cover in proper order, and constitute the integration of afterbody electrode spacing post and electrode slice fixedly, at this in-process, can be according to the quantity of the electrode slice of actual demand, according to the welding element that corresponds, and then realize changing only the electrode slice quantity of demand, the shell of afterbody electrode spacing post and the spacing post of head electrode, can effectively strengthen the adaptability of structure when handling different electrode slice user demands, the result of use of device has been improved.
(2) According to the scheme, when the electrode plate in the radio frequency ablation catheter is deformed into an ellipsoidal shape or a hammer shape, the rotation of the winding disc is utilized to drive the pull rope to move, the concentric shaft is controlled to rotate around the wheel and the gear piece, the clamping strip is pressed by the pressing frame on the basis of meshing connection between the gear piece and the rack, the clamping strip is clamped with the alignment bayonet, the electrode plate in the radio frequency ablation catheter is locked, when the electrode plate in the radio frequency ablation catheter needs to be restored, the winding disc is loosened, under the elasticity of the second spring piece, the pressing frame is separated from the clamping strip, the function of automatically restoring the electrode plate in the radio frequency ablation catheter into the initial shape can be realized, friction obstruction between the electrode plate in the radio frequency ablation catheter and the inner wall of a bronchus is avoided, and the practical safety of the structure is ensured.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is an enlarged schematic view of the portion A of FIG. 1 according to the present invention;
FIG. 3 is a schematic view of a tail electrode spacing post according to the present invention;
FIG. 4 is a schematic view of a head electrode spacing post according to the present invention;
FIG. 5 is a schematic diagram of a head electrode spacing post according to the present invention;
FIG. 6 is a schematic diagram of an elastic latch according to the present invention;
fig. 7 is a schematic structural diagram of an elastic clamping member according to the present invention.
The reference numerals in the figures illustrate:
1. stainless steel tubules; 101. alignment bayonet;
2. a tail electrode limit column;
201. an arc-shaped head;
202. a clamping head; 2021. a clamping hole;
203. a binding sleeve;
3. an electrode sheet; 301. oval column head;
4. a head electrode limit column; 401. a first through hole; 402. a second through hole; 4021. a plugging disc; 4022. a first spring member;
5. an outer sleeve;
6. a clamping assembly;
601. an elastic clamping piece; 6011. a limit bracket; 6012. a clamping strip; 6013. a second spring member; 6014. a pressing frame; 6015. a rack; 6016. a gear member; 6017. concentric shaft winding wheel;
602. a pull rope; 603. a fixed pulley; 604. and (5) winding the disc.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments, and that all other embodiments obtained by persons of ordinary skill in the art without making creative efforts based on the embodiments in the present invention are within the protection scope of the present invention.
Examples:
referring to fig. 1-7, the top end structure of a bronchial smooth muscle radiofrequency ablation catheter comprises a stainless steel tubule 1, wherein a tail electrode limiting column 2 is fixedly arranged at one end of the stainless steel tubule 1, a plurality of electrode plates 3 are clamped on the tail electrode limiting column 2, a head electrode limiting column 4 is arranged at the other end of the stainless steel tubule 1, the electrode plates 3 are inserted into the head electrode limiting column 4 and freely move in the head electrode limiting column 4, an outer sleeve 5 is fixedly arranged at one end of the head electrode limiting column 4, the stainless steel tubule 1 is inserted from one end of the head electrode limiting column 4 and extends to the other end of the outer sleeve 5 through the outer sleeve 5, and a clamping component 6 is arranged on the outer sleeve 5;
the clamping component 6 comprises an elastic clamping component 601, a pull rope 602 is arranged at the top end of the elastic clamping component 601, a plurality of fixed pulleys 603 are arranged on the side face of the pull rope 602, and a winding disc 604 is connected after the fixed pulleys 603 turn. When the winding disc 604 is rocked, the pull rope 602 can be tensioned, then the force bearing direction of the pull rope 602 is changed through the fixed pulley 603, and the clamping between the elastic clamping piece 601 and the alignment bayonet 101 can be controlled, wherein the winding disc 604 is selected to have the locking winding degree.
Referring to fig. 4, one end of the stainless steel tubule 1 is provided with a plurality of alignment bayonets 101 arranged in parallel, and the alignment bayonets 101 are clamped with the elastic clamping members 601. When the alignment bayonet 101 is clamped with the elastic clamping piece 601, the position of the stainless steel tubule 1 can be restrained, and the stability of the restrained stainless steel tubule 1 is ensured.
Referring to fig. 1, 2 and 3, the tail electrode limiting post 2 includes an arc-shaped head 201, the arc-shaped head 201 is fixedly connected with a clamping head 202 by electric welding, and one end of the clamping head 202 is fixedly provided with a beam sleeve 203 by electric welding. In actual use, the arc-shaped heads 201 and the clamping heads 202 corresponding to the arc-shaped heads shown in fig. 3 can be selected for welding according to the required number of the electrode plates 3, so that the applicability of the structure to the use conditions of different electrode plates 3 is improved.
Referring to fig. 3, the clamping head 202 is provided with eight clamping holes 2021, and one end of the electrode plate 3 passes through the clamping sleeve 203 and is clamped with the clamping holes 2021 at corresponding positions in a one-to-one correspondence manner. As shown in fig. 3, the number of the clamping heads 202 corresponding to the number of the clamping holes 2021 can be replaced and used, and the number of the clamping holes 2021 of the clamping heads 202 is 4-8.
Referring to fig. 4 and 5, an oval column head 301 is fixedly arranged at one end of the electrode plate 3 far away from the tail electrode limit column 2, a first through hole 401 in sliding connection with the electrode plate 3 is formed at one end of the interior of the head electrode limit column 4, a second through hole 402 in sliding connection with the oval column head 301 is formed at the other end of the interior of the head electrode limit column 4, and the second through hole 402 is mutually communicated with the first through hole 401. The electrode plate 3 slides in the first through hole 401, and the oval column head 301 slides in the second through hole 402, so that the stability of the electrode plate 3 during movement can be ensured.
A blocking disc 4021 is fixedly arranged in the second through hole 402, and a first spring piece 4022 is fixedly connected between the blocking disc 4021 and the oval column head 301. When the electrode plate 3 needs to return to the original shape, the oval column head 301 can be pushed to move under the elasticity of the first spring member 4022, so that the speed of returning to the original shape of the electrode plate 3 is improved, and the first spring member 4022 is kept in a compressed state in the whole process.
Referring to fig. 6 and 7, the elastic clamping member 601 includes two limiting brackets 6011 which are symmetrically arranged left and right, two clamping bars 6012 are slidably connected to the inner side of the limiting bracket 6011, a second spring member 6013 is sleeved between the two clamping bars 6012 and positioned on the inner side of the limiting bracket 6011, a pressing bracket 6014 is slidably connected to the inner side of the limiting bracket 6011 and in contact with the clamping bars 6012, and the pressing bracket 6014 is inserted into the limiting bracket 6011 and is kept free to slide. When the pressing frame 6014 moves, pressure can be formed on the clamping bar 6012, at this time, the second spring member 6013 is further compressed, then the clamping bar 6012 is forced to form clamping connection with the alignment bayonet 101, so that the position of the stainless steel tubule 1 is fixed, and in the whole process, the second spring member 6013 is kept in a compressed state.
One end of the pressing frame 6014 is fixedly provided with a rack 6015, the rack 6015 is in sliding connection with the inside of the limiting frame 6011, the rack 6015 is in meshed connection with a gear part 6016, one end of the gear part 6016 is fixedly provided with a concentric shaft winding wheel 6017, and one end of the stay cord 602 is wound on the side face of the concentric shaft winding wheel 6017. When the pull rope 602 is tensioned, the concentric shaft is driven to rotate around the wheel 6017 and the gear part 6016, so that the rack 6015 and the pressing frame 6014 move, and the position of the pressing frame 6014 is adjusted.
The two racks 6015 are centrally symmetrical about the gear member 6016. As gear member 6016 rotates, the two racks 6015 move closer together or farther apart.
When in use:
first, the clamping heads 202 corresponding to the clamping holes 2021 are selected and used according to the number of the electrode plates 3 actually used.
And then combining the selected structure into the bronchial smooth muscle radiofrequency ablation catheter, when the bronchial smooth muscle radiofrequency ablation catheter is used, placing the catheter at a smooth muscle lesion position, and when the stainless steel tubule 1 is pulled outwards, the electrode sheet 3 is compressed, and an elliptic sphere or hammer shape is formed.
In this process, the electrode plate 3 slides in the first through hole 401, the oval column head 301 slides in the second through hole 402, and the first spring member 4022 is further compressed, and then the position of the stainless steel tubule 1 is locked by the locking component 6, specifically: the winding disc 604 is rotated to tighten the pull rope 602 and drive the concentric shaft to rotate around the wheel 6017 and the gear part 6016, so that the rack 6015 and the pressing frame 6014 are moved, the position of the pressing frame 6014 is adjusted, pressure can be formed on the clamping strip 6012 when the pressing frame 6014 is moved, at the moment, the second spring part 6013 is further compressed, then the clamping strip 6012 is forced to be clamped with the alignment bayonet 101, the position of the stainless steel tubule 1 is fixed, in the whole process, the second spring part 6013 is kept in a compressed state, the winding disc 604 is locked, the locking process can be completed, a circuit is connected, and the treatment of radio frequency ablation of the bronchus is realized.
When the single treatment is completed, the winding disc 604 is locked in and out, and at this time, the oval column head 301 can be pushed to move under the elasticity of the first spring member 4022, so that the speed of restoring the electrode piece 3 to the initial shape is increased, and the first spring member 4022 maintains a compressed state in the whole process.
The single radio frequency ablation treatment of bronchus smooth muscle can be completed, the adaptability of the structure when the structure is effectively enhanced and the use requirements of different electrode plates 3 are met can be achieved, the use effect of the device is improved, the function of automatically reverting the electrode plates 3 in the radio frequency ablation catheter to the initial shape can be achieved, friction obstruction between the electrode plates 3 in the radio frequency ablation catheter and the inner wall of bronchus is avoided, and the practical safety of the structure is guaranteed.
Finally, it should be noted that: in the description of the present invention, it should be noted that the azimuth or positional relationship indicated by the terms "vertical", "upper", "lower", "horizontal", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present invention.
In the description of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; 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 can be understood by those of ordinary skill in the art according to the specific circumstances.
The above description is only of the preferred embodiments of the present invention; the scope of the invention is not limited in this respect. Any person skilled in the art, within the technical scope of the present disclosure, may apply to the present invention, and the technical solution and the improvement thereof are all covered by the protection scope of the present invention.
Claims (9)
1. The top structure of the bronchial smooth muscle radiofrequency ablation catheter comprises a stainless steel tubule (1), and is characterized in that: the stainless steel thin tube comprises a stainless steel thin tube body, and is characterized in that a tail electrode limiting column (2) is fixedly arranged at one end of the stainless steel thin tube body (1), a plurality of electrode plates (3) are clamped on the tail electrode limiting column (2), a head electrode limiting column (4) is arranged at the other end of the stainless steel thin tube body (1), the electrode plates (3) are inserted into the head electrode limiting column (4) and freely move in the head electrode limiting column (4), an outer sleeve (5) is fixedly arranged at one end of the head electrode limiting column (4), the stainless steel thin tube body (1) is inserted from one end of the head electrode limiting column (4) and extends to the other end of the outer sleeve (5) through the outer sleeve (5), and a clamping component (6) is arranged on the outer sleeve (5);
the clamping assembly (6) comprises an elastic clamping piece (601), a pull rope (602) is arranged at the top end of the elastic clamping piece (601), a plurality of fixed pulleys (603) are arranged on the side face of the pull rope (602), and a winding disc (604) is connected after the fixed pulleys (603) turn.
2. The bronchial smooth muscle radiofrequency ablation catheter tip structure of claim 1, wherein: one end of the stainless steel thin tube (1) is provided with a plurality of alignment bayonets (101) which are arranged in parallel, and the alignment bayonets (101) are connected with the elastic clamping pieces (601) in a clamping mode.
3. The bronchial smooth muscle radiofrequency ablation catheter tip structure of claim 1, wherein: the tail electrode limiting column (2) comprises an arc-shaped head (201), the arc-shaped head (201) is fixedly connected with a clamping head (202) through electric welding, and one end of the clamping head (202) is fixedly provided with a binding sleeve (203) through electric welding.
4. The bronchial smooth muscle radiofrequency ablation catheter tip structure of claim 3, wherein: eight clamping holes (2021) are formed in the clamping head (202), and one end of the electrode plate (3) penetrates through the clamping sleeve (203) and is clamped with the clamping holes (2021) at corresponding positions in a one-to-one correspondence mode.
5. The bronchial smooth muscle radiofrequency ablation catheter tip structure of claim 1, wherein: an elliptical column head (301) is fixedly arranged at one end, far away from the tail electrode limit column (2), of the electrode plate (3), a first through hole (401) which is connected with the electrode plate (3) in a sliding mode is formed in one end of the inner portion of the head electrode limit column (4), a second through hole (402) which is connected with the elliptical column head (301) in a sliding mode is formed in the other end of the inner portion of the head electrode limit column (4), and the second through hole (402) and the first through hole (401) are communicated with each other.
6. The bronchial smooth muscle radiofrequency ablation catheter tip structure of claim 5, wherein: the second through hole (402) is internally fixedly provided with a plugging disc (4021), and a first spring member (4022) is fixedly connected between the plugging disc (4021) and the oval column head (301).
7. The bronchial smooth muscle radiofrequency ablation catheter tip structure of claim 1, wherein: the elastic clamping piece (601) comprises two limit brackets (6011) which are arranged in bilateral symmetry, two clamping strips (6012) are connected to the inner sides of the limit brackets (6011) in a sliding mode, a second spring piece (6013) is sleeved between the two clamping strips (6012) on the inner side of the limit brackets (6011), pressing frames (6014) are connected to the inner sides of the limit brackets (6011) in a sliding mode and are in contact with the clamping strips (6012), and the pressing frames (6014) are inserted into the limit brackets (6011) and keep free sliding.
8. The bronchial smooth muscle radiofrequency ablation catheter tip structure of claim 7, wherein: the utility model discloses a compression frame, including frame (6014) and stay cord (602), including frame (6014) and stay cord, the one end of frame (6014) is fixed to be equipped with rack (6015), rack (6015) sliding connection is inside spacing frame (6011), just rack (6015) meshing is connected with gear (6016), the one end of gear (6016) is fixed to be equipped with concentric shaft reel (6017), the one end of stay cord (602) is convoluteed in the side of concentric shaft reel (6017).
9. The bronchial smooth muscle radiofrequency ablation catheter tip structure of claim 8, wherein: the two racks (6015) are centrosymmetric around the gear part (6016).
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| CN202310424020.0A CN116473663A (en) | 2023-04-20 | 2023-04-20 | Top end structure of bronchial smooth muscle radiofrequency ablation catheter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117694998A (en) * | 2024-02-05 | 2024-03-15 | 杭州科嘉生物技术有限公司 | Circulation cooling type ablation device |
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2023
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117694998A (en) * | 2024-02-05 | 2024-03-15 | 杭州科嘉生物技术有限公司 | Circulation cooling type ablation device |
| CN117694998B (en) * | 2024-02-05 | 2024-04-19 | 杭州科嘉生物技术有限公司 | Circulation cooling type ablation device |
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