CN110974398A - Cryoablation system with magnetic navigation - Google Patents
Cryoablation system with magnetic navigation Download PDFInfo
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- CN110974398A CN110974398A CN201911228805.0A CN201911228805A CN110974398A CN 110974398 A CN110974398 A CN 110974398A CN 201911228805 A CN201911228805 A CN 201911228805A CN 110974398 A CN110974398 A CN 110974398A
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- freezing
- magnetic navigation
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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
- A61B18/02—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by cooling, e.g. cryogenic techniques
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B34/00—Computer-aided surgery; Manipulators or robots specially adapted for use in surgery
- A61B34/20—Surgical navigation systems; Devices for tracking or guiding surgical instruments, e.g. for frameless stereotaxis
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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
- A61B18/02—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by cooling, e.g. cryogenic techniques
- A61B2018/0212—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by cooling, e.g. cryogenic techniques using an instrument inserted into a body lumen, e.g. catheter
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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
- A61B18/02—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by cooling, e.g. cryogenic techniques
- A61B2018/0231—Characteristics of handpieces or probes
- A61B2018/0262—Characteristics of handpieces or probes using a circulating cryogenic fluid
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B34/00—Computer-aided surgery; Manipulators or robots specially adapted for use in surgery
- A61B34/20—Surgical navigation systems; Devices for tracking or guiding surgical instruments, e.g. for frameless stereotaxis
- A61B2034/2046—Tracking techniques
- A61B2034/2051—Electromagnetic tracking systems
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- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
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- Heart & Thoracic Surgery (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
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- Veterinary Medicine (AREA)
- Robotics (AREA)
- Otolaryngology (AREA)
- Surgical Instruments (AREA)
Abstract
The invention belongs to the field of medical instruments and discloses a magnetic navigation cryoablation system, which comprises a freezing source, a freezing control system, a magnetic navigation assembly and a cryoablation assembly; the cryoablation assembly comprises a freezing device and a freezing tube body, the near end of the freezing device is fixedly connected with the far end of the freezing tube body, the near end of the freezing tube body is connected with a freezing control system, and a freezing source is transmitted to the freezing device through the freezing tube body; the magnetic navigation subassembly includes wire and magnetic navigation signal source, and the magnetic navigation signal source sets up inside refrigerating plant, and the distal end and the magnetic navigation signal source of wire are connected. The magnetic navigation signal source is placed in the freezing device, so that accurate puncture navigation in the solid visceral organs is realized, meanwhile, the freezing component consists of a plurality of freezing units and the core pipe, heat exchange with the outside can be better carried out, and the effect of enlarging the freezing range is realized.
Description
Technical Field
The invention belongs to the field of medical instruments, and particularly relates to a cryoablation system with magnetic navigation.
Background
The principle of the cryoablation technology is that the temperature of a target ablation part is reduced by taking away the heat of tissues through the heat absorption and evaporation of a liquid refrigerant. In addition, the cryoablation is easier to operate, shortens the operation time, has high treatment effectiveness, reduces serious complications such as thrombus and the like, and reduces the pain degree of patients.
The patent with the publication number of [ CN 208511163U ] discloses a cryoablation puncture needle for treatment, which comprises a handle, a probe, an air passage, a heat insulation layer and a blocking surface, wherein the probe is arranged at the tail end of the handle, the air passage penetrates through the handle and extends into the probe, a first interlayer is formed between the air passage and the inner wall of the handle, a second interlayer is formed between the air passage and the inner wall of the probe, a cavity is formed between the probe tip and the probe, the heat insulation layer is arranged on the second interlayer and is arranged close to the inner wall of the probe, and the blocking surface is arranged between the air. The utility model discloses a what provide the puncture needle for cryoablation treatment has solved prior art's puncture needle for cryoablation treatment use cost height, and the patient experiences poor technical problem.
Patent publication No. [ CN 109620303 a ] discloses a method and apparatus for lung-aided diagnosis. Acquiring a registration matrix of the electromagnetic navigation bronchoscope according to the preoperative CT image; acquiring a focus image by using a peripheral ultrasonic probe; performing on-site cytological evaluation under the condition of acquiring a focus image; if the cytology is negative, performing bronchoalveolar lavage and bronchoscopic biopsy; introducing a puncture path and registering registration information into a transthoracic electromagnetic navigation system; aiming a puncture needle at a target puncture point on a person to be detected; adjusting the space angle of the puncture needle; acquiring a breathing curve of a person to be detected; when the puncture path of the puncture needle is superposed with the introduced puncture path and the breathing time of the person to be detected is consistent with the CT time, starting the puncture operation; when the puncture needle reaches a preset position, carrying out needle aspiration biopsy. Therefore, when the electromagnetic navigation bronchoscope biopsy is not ideal, the electromagnetic navigation guided transthoracic wall puncture biopsy is carried out, and the transit time and puncture risk of patient diagnosis are reduced to the maximum extent.
However, the conventional puncture cryoablation catheter usually has a cavity structure at the freezing position, a cavity structure at the far end of the cryoneedle, and a cold source exchanges heat with tissues through the wall of the cavity tube to achieve the purpose of treatment. In addition, in the existing puncture magnetic navigation technology, a magnetic navigation sensor is usually installed on a clamp, the clamp is fixed at the tail end of a puncture needle, and the puncture needle is bent due to the stress of the puncture needle during puncture, so that the head end of the puncture needle deviates from the originally set distance, the position where the head end of the actual puncture needle is positioned deviates from the target position, and the navigation is not accurate.
Disclosure of Invention
The invention provides a cryoablation system with magnetic navigation, which aims to solve the problems in the prior art, and the cryoablation system with magnetic navigation is characterized in that a magnetic navigation signal source is placed in a freezing device, and a plurality of freezing units and a core tube form a freezing part, so that the effects of accurate puncture navigation in solid organs and increase of a freezing range are realized.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a magnetic navigation cryoablation system, which comprises a freezing source, a freezing control system, a magnetic navigation assembly and a cryoablation assembly, wherein the freezing source is connected with the magnetic navigation assembly; the cryoablation assembly comprises a freezing device and a freezing tube body, the near end of the freezing device is fixedly connected with the far end of the freezing tube body, the near end of the freezing tube body is connected with a freezing control system, and a freezing source is transmitted to the freezing device through the freezing tube body; the magnetic navigation subassembly includes wire and magnetic navigation signal source, and the magnetic navigation signal source sets up inside refrigerating plant, and the distal end and the magnetic navigation signal source of wire are connected.
Furthermore, the freezing device is composed of a freezing part and a puncturing part; the near end of the puncture component is fixedly connected with the far end of the freezing component.
Further, the freezing part comprises a plurality of freezing units and a core pipe; the freezing units are distributed in a circumference or wound on the core pipe.
Further, an air inlet pipeline and an air return pipeline are arranged in the freezing pipe body; the air inlet pipeline and the air return pipeline are coaxially or side by side distributed.
Further, the far ends of the air inlet pipeline and the air return pipeline are fixedly connected with the refrigeration unit respectively.
Further, the magnetic navigation signal source is disposed inside the core tube or inside the penetration member.
Further, the lead is disposed inside the freezing pipe body.
By adopting the technical scheme, compared with the prior art, the invention has the following technical effects:
(1) the freezing units are wound or circumferentially distributed on the core pipe, so that the heat exchange area between the freezing device and the tissue is enlarged, the range of cryoablation is enlarged, and a better treatment effect is achieved;
(2) the core pipe is arranged in the freezing device, so that the rigidity of the freezing device is enhanced, and the phenomenon that the puncturing position deviates due to deformation of the freezing device in the puncturing process is avoided.
(3) The freezing device is internally provided with a magnetic navigation signal source, so that an accurate puncture path is provided for an operator in the puncture process, and the puncture needle is ensured to accurately reach the target position.
Drawings
FIG. 1 is a cross-sectional partial layout of a magnetic navigated cryoablation system in an embodiment of the present invention;
FIG. 2 is a schematic view of a combined magnetic navigation assembly and a cryoablation assembly of a cryoablation system with magnetic navigation according to a first embodiment of the present invention;
FIG. 3 is a schematic view of the combined structure of the magnetic navigation assembly and the cryoablation assembly of the cryoablation system with magnetic navigation according to the second embodiment of the present invention;
FIG. 4 is a sectional view of the combined structure of the magnetic navigation assembly and the cryoablation assembly of the magnetic navigated cryoablation system in accordance with the third embodiment of the present invention;
FIG. 5 is a cross-sectional view of the combined structure of the magnetic navigation assembly and the cryoablation assembly of the magnetic navigated cryoablation system in accordance with the fourth embodiment of the present invention;
FIG. 6 is a longitudinal cross-sectional view of the freezer component of FIG. 5;
wherein, 1-a puncturing part; 12-a cavity structure; 2-a freezing component; 21-a freezing unit; 22-core tube; 3-a magnetic navigation signal source; 4-freezing the tube body; 41-an air inlet pipeline; 42-return gas line.
Detailed Description
The invention provides a cryoablation system with magnetic navigation, which is characterized in that a magnetic navigation signal source is arranged at the far end of a puncture needle, and a plurality of freezing units and a core tube form a freezing part. The specific structure of the magnetic navigation cryoablation system is introduced as follows:
a magnetic navigation cryoablation system comprises a freezing source, a freezing control system, a magnetic navigation assembly and a cryoablation assembly; the freezing and melting assembly comprises a freezing device and a freezing tube body, the near end of the freezing device is fixedly connected with the far end of the freezing tube body, the near end of the freezing tube body is connected with a freezing control system, and a freezing source is transmitted to the freezing device through the freezing tube body; the magnetic navigation subassembly includes wire and magnetic navigation signal source, and the magnetic navigation signal source sets up inside refrigerating plant, and the distal end and the magnetic navigation signal source of wire are connected.
Wherein, the freezing device is composed of a freezing component 2 and a puncturing component 1; the near end of the puncture component 1 is fixedly connected with the far end of the freezing component 2. The freezing part 2 includes a plurality of freezing units 21 and a core tube 22; the freezing units 21 are circumferentially distributed or wound on the core tube 22.
An air inlet pipeline 41 and an air return pipeline 42 are arranged in the freezing pipe body 4; the inlet line 41 and the return line 42 are arranged coaxially or side by side. The distal ends of the air inlet line 41 and the air return line 42 are fixedly connected to the refrigeration unit 21.
The magnetic navigation signal source 3 is provided inside the core tube 22 or inside the piercing member 1, and the lead wire is provided inside the tubular freezing body 4.
The present invention will be described in detail and specifically with reference to the following examples to facilitate better understanding of the present invention, but the following examples do not limit the scope of the present invention.
Example one
The embodiment provides a magnetic navigation subassembly of taking magnetic navigation's cryoablation system and the integrated configuration of cryoablation subassembly, combines fig. 1, and freezing unit 21 is single return circuit, and the rotatory winding is on core pipe 22 surface, and the puncture part 1 near-end and core pipe 22 distal end fixed connection, the inside magnetic navigation signal source 3 of placing of core pipe 22.
Example two
The embodiment provides a magnetic navigation subassembly of taking magnetic navigation's cryoablation system and the integrated configuration of cryoablation subassembly, combines fig. 2, and freezing unit 21 is single return circuit, and the rotatory winding is on core pipe 22 surface, and puncture part 1 near-end and core pipe 22 distal end fixed connection, magnetic navigation signal source 3 place with puncture part 1 inside.
EXAMPLE III
In the embodiment, a combined structure of a magnetic navigation component and a cryoablation component of a magnetic navigation cryoablation system is provided, and referring to fig. 3, two or more freezing units 21 are wound on the surface of a core tube 22 in a rotating manner, the proximal end of a puncture part 1 is a cavity structure 12 which is a hollow tube body and is used as a heat exchange cavity to be connected with the freezing units 21 in a sealing manner; the far end of the freezing unit 21 is fixedly connected with the near end of the puncture part 1, and the magnetic navigation signal source 3 is arranged inside the core tube 22.
Example four
The embodiment provides a magnetic navigation subassembly of taking magnetic navigation's cryoablation system and combined structure of cryoablation subassembly, combines figure 4, and a plurality of freezing unit circumferences are distributed on the core pipe surface, and puncture part 1 near-end is the cavity structure, and freezing unit 21 distal end and puncture part 1 near-end fixed connection, and magnetic navigation signal source 3 is placed to core pipe 22 inside.
The embodiments of the present invention have been described in detail, but the present invention is only exemplary, and the present invention is not limited to the above described embodiments. Any equivalent modifications and substitutions to those skilled in the art are also within the scope of the present invention. Accordingly, equivalent changes and modifications made without departing from the spirit and scope of the present invention should be covered by the present invention.
Claims (7)
1. A magnetically navigated cryoablation system comprising a cryo-source, a cryo-control system, a magnetically navigated assembly, a cryoablation assembly; the cryoablation assembly comprises a freezing device and a freezing pipe body, the near end of the freezing device is fixedly connected with the far end of the freezing pipe body, the near end of the freezing pipe body is connected with the freezing control system, and the freezing source is transmitted to the freezing device through the freezing pipe body; the magnetic navigation assembly comprises a lead and a magnetic navigation signal source, the magnetic navigation signal source is arranged in the refrigerating device, and the far end of the lead is connected with the magnetic navigation signal source.
2. The magnetic navigation cryoablation system of claim 1 wherein said freezing means is comprised of a freezing member (2) and a piercing member (1), said piercing member (1) being fixedly attached at a proximal end to a distal end of said freezing member (2).
3. A magnetic navigation cryoablation system according to claim 2, wherein said freezing member (2) comprises a number of freezing units (21) and a core tube (22); the freezing units (21) are circumferentially distributed or wound on the core pipe (22).
4. The magnetic navigation cryoablation system of claim 1, wherein an air inlet line (41) and an air return line (42) are provided in the cryoablation tube body (4), the air inlet line (41) and the air return line (42) being arranged coaxially or side by side.
5. A magnetic navigation cryoablation system according to claim 4, wherein said air inlet line (41) and said air return line (42) are fixedly connected at their distal ends to the proximal end of the freezing unit (21), respectively.
6. A magnetic navigated cryoablation system according to claim 1, characterized in that said magnetic navigation signal source (3) is arranged inside the core tube (22) or inside the penetrating member (1).
7. A magnetic navigated cryoablation system according to claim 1, characterized in that said conducting wires are arranged inside said cryocatheter body (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911228805.0A CN110974398A (en) | 2019-12-04 | 2019-12-04 | Cryoablation system with magnetic navigation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911228805.0A CN110974398A (en) | 2019-12-04 | 2019-12-04 | Cryoablation system with magnetic navigation |
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| CN110974398A true CN110974398A (en) | 2020-04-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911228805.0A Pending CN110974398A (en) | 2019-12-04 | 2019-12-04 | Cryoablation system with magnetic navigation |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113143580A (en) * | 2021-04-07 | 2021-07-23 | 深圳市眼科医院 | Pen type delicate freezing device adopting Freon |
| CN114469276A (en) * | 2022-01-18 | 2022-05-13 | 蓝线铂立生命科技(苏州)有限公司 | Visual puncture cryoablation system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5885276A (en) * | 1997-12-02 | 1999-03-23 | Galil Medical Ltd. | Method and device for transmyocardial cryo revascularization |
| US20070093710A1 (en) * | 2005-10-20 | 2007-04-26 | Michael Maschke | Cryocatheter for introduction into a body vessel together with medical investigation and treatment equipment |
| CN101309651A (en) * | 2005-06-20 | 2008-11-19 | 消融前沿公司 | Ablation catheter |
| US8080006B2 (en) * | 2004-09-28 | 2011-12-20 | Boston Scientific Scimed, Inc. | Method for tissue cryotherapy |
| CN107049467A (en) * | 2017-06-05 | 2017-08-18 | 康沣生物科技(上海)有限公司 | A kind of adjustable freezing ablation catheter |
-
2019
- 2019-12-04 CN CN201911228805.0A patent/CN110974398A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5885276A (en) * | 1997-12-02 | 1999-03-23 | Galil Medical Ltd. | Method and device for transmyocardial cryo revascularization |
| US8080006B2 (en) * | 2004-09-28 | 2011-12-20 | Boston Scientific Scimed, Inc. | Method for tissue cryotherapy |
| CN101309651A (en) * | 2005-06-20 | 2008-11-19 | 消融前沿公司 | Ablation catheter |
| US20070093710A1 (en) * | 2005-10-20 | 2007-04-26 | Michael Maschke | Cryocatheter for introduction into a body vessel together with medical investigation and treatment equipment |
| CN107049467A (en) * | 2017-06-05 | 2017-08-18 | 康沣生物科技(上海)有限公司 | A kind of adjustable freezing ablation catheter |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113143580A (en) * | 2021-04-07 | 2021-07-23 | 深圳市眼科医院 | Pen type delicate freezing device adopting Freon |
| CN114469276A (en) * | 2022-01-18 | 2022-05-13 | 蓝线铂立生命科技(苏州)有限公司 | Visual puncture cryoablation system |
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Application publication date: 20200410 |