CN113397697A - Protection device for human body visceral organs tissue in microwave ablation operation - Google Patents
Protection device for human body visceral organs tissue in microwave ablation operation Download PDFInfo
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- CN113397697A CN113397697A CN202110791223.4A CN202110791223A CN113397697A CN 113397697 A CN113397697 A CN 113397697A CN 202110791223 A CN202110791223 A CN 202110791223A CN 113397697 A CN113397697 A CN 113397697A
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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
- A61B18/18—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves
- A61B18/1815—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using microwaves
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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
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/08—Accessories or related features not otherwise provided for
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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
- A61B18/18—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves
- A61B18/1815—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using microwaves
- A61B2018/1861—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using microwaves with an instrument inserted into a body lumen or cavity, e.g. a 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
- A61B18/18—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves
- A61B18/1815—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using microwaves
- A61B2018/1869—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using microwaves with an instrument interstitially inserted into the body, e.g. needles
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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
- A61B2034/2065—Tracking using image or pattern recognition
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/08—Accessories or related features not otherwise provided for
- A61B2090/0801—Prevention of accidental cutting or pricking
- A61B2090/08021—Prevention of accidental cutting or pricking of the patient or his organs
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Abstract
The invention relates to a protection device for human body visceral organs in a microwave ablation operation, which comprises a catheter, an elastic balloon and an inner needle, wherein the catheter is provided with a first cavity and a second cavity, the first cavity and the second cavity both extend along the length direction of the catheter, and the inner needle is inserted into the first cavity; the elastic balloon is fixedly arranged on the outer side of the head end of the catheter, the second cavity is communicated with the elastic balloon, and an injection joint is arranged at one end, far away from the elastic balloon, of the second cavity. The invention can prevent microwave ablation from damaging other normal tissues, thereby protecting internal tissues of a human body.
Description
Technical Field
The invention relates to a protection device for human organ tissues in a microwave ablation operation, belonging to the technical field of medical instruments.
Background
The microwave ablation technology mainly utilizes a microwave therapeutic instrument, directly punctures a tumor part by puncturing by using a microwave ablation needle, generates a microwave field to enable polar molecules in tissues to generate high-speed motion by generating mutual friction to generate heat, rapidly heats up in the tumor, and denaturalizes and coagulates cancer cell protein when the temperature is raised to about 60 ℃ to cause irreversible necrosis. Thereby achieving the purposes of killing tumor cells and treating cancer for patients.
At present, in a microwave ablation operation, the microwave ablation operation is implemented by puncturing under the guidance of CT or B-ultrasonic, so that the microwave ablation operation needs to ensure the accuracy of two aspects: 1) ensuring the microwave ablation needle to puncture correctly and ensuring the proper position; 2) high temperature generated by microwave ablation cannot affect other normal tissues, and particularly in a microwave ablation scheme for precise operations of brain, thyroid and the like, because the tissues are too fine and the spacing is small, the nerve or other normal tissues of a patient can be ablated by carelessness, and medical accidents are easily caused. Meanwhile, the diseased tissue needs to be stripped from the healthy tissue, so that convenience is brought to ablation of the diseased tissue. Therefore, how to prevent the microwave ablation from damaging other normal tissues and perform early warning needs to specially design a corresponding protection device and a corresponding mechanism to protect the internal tissues of the human body in time.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the protection device for the human organ tissues in the microwave ablation operation can prevent the microwave ablation from damaging other normal tissues, thereby protecting the internal tissues of the human body.
In order to solve the technical problems, the technical scheme provided by the invention is as follows: a protection device for human body visceral organs in a microwave ablation operation comprises a catheter, an elastic balloon and an inner needle, wherein the catheter is provided with a first cavity and a second cavity, the first cavity and the second cavity both extend along the length direction of the catheter, and the inner needle is inserted into the first cavity; the elastic balloon is fixedly arranged on the outer side of the head end of the catheter, the second cavity is communicated with the elastic balloon, and an injection joint is arranged at one end, far away from the elastic balloon, of the second cavity.
It should be noted that: for convenience of description, one end of the catheter inserted into a human body is defined as a head end, and one end of the catheter far away from the human tissue to be ablated is defined as a tail end; the head end and the tail end of the inner needle are also defined similarly, namely, one end of the catheter inserted into the human tissue to be ablated is defined as the head end, and the other end is defined as the tail end.
When the microwave ablation needle punctures into a human body in a microwave ablation operation, the catheter in the protection device is inserted into the human body, the inner needle extends out from the head end of the catheter to play a role in guiding and guiding, and the catheter is punctured between a lesion part and a good tissue part under the guidance of CT and the like to protect normal tissues from being burnt by microwaves. By inserting the protection device beside the cancer tissue and injecting the air bag during treatment, the pathological change (cancer and the like) tissue is separated from the normal tissue, so that the high temperature generated by microwave ablation cannot influence other normal tissues, and the occurrence of medical accidents is reduced. In addition, the protective device of the invention strips the pathological change tissue from the healthy tissue, and also provides convenience for the ablation of the pathological change tissue.
Drawings
The invention will be further explained with reference to the drawings.
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a schematic view of the interior of the catheter.
Fig. 3 is a schematic view of a fixed adjuster.
Fig. 4 is a schematic view of a needle cap.
Reference numerals: 1. an inner needle; 2. an elastic balloon; 3. a conduit; 4. a connecting handle; 5. elastic buckle; 6. positioning the clamping groove; 7. fixing the adjuster; 7-1, a catheter clamping seat; 7-2, adjusting the clamping seat; 7-3, a base; 8. a needle cap; 8-1, a lead outlet; 8-2, protecting wings of the needle cap; 8-3, a clamping part; 9. a liquid injection pipe; 10. a liquid injection joint; 11. a first pressure sensor, 12, a second pressure sensor; 13. a signal processor; 14. a wire; 15. a catheter connector.
Detailed Description
Example one
The protection device for human body organ tissues in the microwave ablation operation of the embodiment is shown in fig. 1, and comprises a catheter 3, an elastic balloon 2 and an inner needle 1, wherein the catheter 3 is provided with a first cavity and a second cavity, the first cavity and the second cavity extend along the length direction of the catheter 3, and the inner needle 1 is inserted into the first cavity. The elastic balloon 2 is fixedly arranged on the outer side of the head end of the catheter 3, the second cavity is communicated with the elastic balloon 2, and an injection joint 10 is arranged at one end, far away from the elastic balloon 2, of the second cavity. In practice, as shown in fig. 1, the catheter 3 is preferably fixedly provided with a connecting handle 4 for enhancing the strength of the catheter, and the liquid injection joint 10 is connected to the connecting handle 4 through the liquid injection tube 9 and is communicated with the second cavity.
When the microwave ablation needle punctures into a human body in a microwave ablation operation, the catheter in the protection device is inserted into the human body, the inner needle extends out from the head end of the catheter to play a role in guiding and guiding, and the catheter is punctured between a lesion part and a good tissue part under the guidance of CT and the like to protect normal tissues from being burnt by microwaves. By inserting the protection device beside the cancer tissue and injecting the air bag during treatment, the pathological change (cancer and the like) tissue is separated from the normal tissue, so that the high temperature generated by microwave ablation cannot influence other normal tissues, and the occurrence of medical accidents is reduced.
The embodiment can be further modified as follows:
1) the catheter needle fixing device further comprises a fixing regulator 7, as shown in fig. 1 and 3, the fixing regulator 7 comprises a base 7-3, a catheter clamping seat 7-1 and an adjusting clamping seat 7-2, the catheter clamping seat 7-1 and the adjusting clamping seat 7-2 are both installed on the base 7-3, the tail of the catheter 3 is clamped on the catheter clamping seat 7-1, a plurality of positioning clamping grooves 6 are formed in the adjusting clamping seat 7-2, a needle cap 8 is arranged on the adjusting clamping seat, and the tail of the inner needle 1 is fixedly connected with the needle cap 8. As shown in fig. 4, a clamping part 8-3 matched with the clamping groove is arranged on the needle cap 8; when in use, the clamping parts 8-3 are clamped with different positioning clamping grooves 6 to adjust the needle head position of the inner needle 1. After lesion tissues and good tissues are separated, the CT is confirmed under the CT, the CT is checked at the same time, the inner needle 1 is moved backwards by a plurality of corresponding clamping groove positions along the 7-2 adjusting clamping seat according to the distance displayed under the CT through the 8 needle cap, the inner needle is prevented from retreating too much or too little, the rigidity of the catheter is ensured, and meanwhile, the organ tissues are prevented from being punctured, and at the moment, the inner needle plays a role in ensuring the rigidity of the catheter.
2) The number of the pipe clamping seats 7-1 is two, the connecting block 5 is arranged between the two pipe clamping seats of the pipe 3, and two ends of the connecting block 5 respectively abut against the two pipe clamping seats 7-1. The connecting block 5 and the catheter clamping seat 7-1 are matched with the fixed regulator 7, so that the catheter can be conveniently and integrally fixed, and the connection strength of the catheter 3 and the fixed regulator 7 is improved.
Example two
The present embodiment is an improvement on the first embodiment, and is different from the first embodiment in that: as shown in fig. 2, a first pressure sensor 11 and a second pressure sensor 12 are arranged in a second cavity of the tube body (the first pressure sensor 11 and the second pressure sensor 12 are embedded in the second cavity), and the first pressure sensor 11 is located in the area surrounded by the elastic balloon 2, preferably located at the communication position of the second cavity and the elastic balloon 2; the second pressure sensor 12 is located between the resilient bladder 2 and the injection fitting 10, preferably located adjacent to the resilient bladder 2. The first pressure sensor 11 and the second pressure sensor 12 are both connected with an ablation host, the ablation host monitors the data acquired by the first pressure sensor 11 and the second pressure sensor 12, and when the difference between the pressures acquired by the first pressure sensor and the second pressure sensor exceeds a preset threshold, ablation output is stopped and an alarm is given.
Thus, the present embodiment has two states when in use, state 1: the pressure on the ablation host computer is displayed normally, and after the ablation is finished, the ablation needle and the catheter are drawn out to complete the whole ablation process; state 2: the catheter is extruded due to the movement of the visceral organs of a patient in the ablation process, so that the air bags are stressed unevenly and deflect, or the ablation needle is deflected in position due to slight hand shake of a doctor, the air bags are protected from being punctured, pressure change can be caused, and the like.
The embodiment can be further modified as follows: the head end of the catheter is provided with a temperature measuring needle (not shown in the figure), preferably, the temperature measuring needle is embedded in the first cavity, the temperature measuring needle is connected with the ablation host, the temperature measuring needle works when surrounding tissues are ablated, if the temperature of the ablated tissues is abnormal, the temperature of the ablated tissues can be timely fed back to the microwave ablation host, so that ablation work is stopped, and tissues are protected from high-temperature injury.
As shown in fig. 3, the needle cap 8 is further provided with a lead outlet 8-1 for leading out a lead 14 for connecting the first pressure sensor 11, the second pressure sensor 12 and the temperature measuring needle. In practice, the first pressure sensor, the second pressure sensor and the temperature measuring needle are connected with the signal processor 13, and then the signal processor 13 is connected with the ablation host through the lead 14 and the lead connector 15.
In use, the present embodiment begins preparation for an ablation procedure on a patient after a medical practitioner has prepared the relevant accessories for the surgical ablation. The parts of the product are first inspected for integrity. The ablation host is started, the ablation needle and a catheter balloon can work, the work and detection can be confirmed on the host, corresponding work such as auxiliary disinfection is well done, the ablation needle is guided by CT to puncture a lesion part, the catheter is punctured between the lesion part and a good tissue part in the same step after the position is confirmed to be correct, an injector is inserted into an injection connector 10 to inject liquid (generally, distilled water can be adopted), the lesion tissue and the good tissue are separated, the confirmation is carried out under the CT, the CT is checked at the same time, the inner needle 1 is moved backwards for a plurality of clamping positions along an adjusting clamping seat 7-2 according to the distance displayed under the CT, the inner needle is ensured not to retreat too much or too little, the rigidity of the catheter is ensured, and organs are prevented from being punctured at the same time. After finishing, the catheter is fixed, the connecting handle 4 is fixed by using an adhesive tape or a fixing paste, the catheter is fixed, then the host computer is checked to display, the pressure monitoring is ensured to be normal, and then the ablation is started. When the microwave ablation needle is punctured in the microwave ablation operation, the catheter contained in the device is simultaneously inserted under the guidance of the inner needle, so that normal tissues are protected from being burnt by microwaves.
The present invention is not limited to the specific technical solutions described in the above embodiments, and other embodiments may be made in the present invention in addition to the above embodiments. It will be understood by those skilled in the art that various changes, substitutions of equivalents, and alterations can be made without departing from the spirit and scope of the invention.
Claims (8)
1. A protection device for human organ tissues in microwave ablation operation is characterized in that: the catheter comprises a catheter, an elastic balloon and an inner needle, wherein the catheter is provided with a first cavity and a second cavity, the first cavity and the second cavity both extend along the length direction of the catheter, and the inner needle is inserted into the first cavity; the elastic balloon is fixedly arranged on the outer side of the head end of the catheter, the second cavity is communicated with the elastic balloon, and an injection joint is arranged at one end, far away from the elastic balloon, of the second cavity.
2. The device for protecting a human organ tissue in microwave ablation surgery according to claim 1, characterized in that: the catheter fixing device is characterized by further comprising a fixing regulator, wherein the fixing regulator comprises a base, a catheter clamping seat and an adjusting clamping seat, the catheter clamping seat and the adjusting clamping seat are both installed on the base, the tail part of the catheter is clamped on the catheter clamping seat, a plurality of positioning clamping grooves are formed in the adjusting clamping seat, a needle cap is arranged on the adjusting clamping seat, the tail part of the inner needle is fixedly connected with the needle cap, and a clamping part matched with the clamping grooves is formed in the needle cap; when the inner needle is used, the clamping part is clamped with different positioning clamping grooves to adjust the position of the needle head of the inner needle.
3. The device for protecting a human organ tissue in microwave ablation surgery according to claim 1 or 2, characterized in that: the catheter is fixedly provided with a connecting handle for enhancing the strength of the catheter, and the liquid injection joint is arranged on the connecting handle.
4. The device for protecting human organ tissues in microwave ablation surgery according to claim 2, characterized in that: the device comprises a base, a plurality of pipe clamping seats and a plurality of connecting blocks, wherein the number of the pipe clamping seats is two, the connecting blocks are arranged between the two pipe clamping seats of the pipe, and the connecting blocks are propped against the two pipe clamping seats.
5. The device for protecting a human organ tissue in microwave ablation surgery according to claim 1 or 2, characterized in that: a first pressure sensor and a second pressure sensor are arranged in a second cavity of the tube body, the first pressure sensor is positioned in the area surrounded by the elastic balloon, and the second pressure sensor is positioned between the elastic balloon and the liquid injection joint; the first pressure sensor and the second pressure sensor are both connected with an ablation host, the ablation host monitors data collected by the first pressure sensor and the second pressure sensor, and when the ablation host detects that the difference value between the pressures collected by the first pressure sensor and the second pressure sensor exceeds a preset threshold, ablation output is stopped and an alarm is given.
6. The device for protecting human organ tissues in microwave ablation surgery according to claim 5, characterized in that: first pressure sensor and second pressure sensor inlay in the second cavity, first pressure sensor is located the intercommunication department of second cavity and elasticity sacculus, second pressure sensor is close to the setting of elasticity sacculus.
7. The device for protecting a human organ tissue in microwave ablation surgery according to claim 1 or 2, characterized in that: the head of the catheter is provided with a temperature measuring needle connected with the ablation host, and when the ablation host detects that the temperature measured by the temperature measuring needle exceeds a threshold value, ablation output is stopped and an alarm is given.
8. The device for protecting a human organ tissue in a microwave ablation procedure according to claim 7, wherein: the temperature measuring needle is embedded in the first cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110791223.4A CN113397697A (en) | 2021-07-13 | 2021-07-13 | Protection device for human body visceral organs tissue in microwave ablation operation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110791223.4A CN113397697A (en) | 2021-07-13 | 2021-07-13 | Protection device for human body visceral organs tissue in microwave ablation operation |
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| Publication Number | Publication Date |
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| CN113397697A true CN113397697A (en) | 2021-09-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110791223.4A Pending CN113397697A (en) | 2021-07-13 | 2021-07-13 | Protection device for human body visceral organs tissue in microwave ablation operation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114052895A (en) * | 2021-11-19 | 2022-02-18 | 武汉拓扑转化医学研究中心有限公司 | Pulse atrial fibrillation ablation system and catheter |
-
2021
- 2021-07-13 CN CN202110791223.4A patent/CN113397697A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114052895A (en) * | 2021-11-19 | 2022-02-18 | 武汉拓扑转化医学研究中心有限公司 | Pulse atrial fibrillation ablation system and catheter |
| CN114052895B (en) * | 2021-11-19 | 2024-02-27 | 武汉拓扑转化医学研究中心有限公司 | Pulse atrial fibrillation ablation system and catheter |
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