CN204091954U - A kind of medical temperature sensitive puncture probe - Google Patents
A kind of medical temperature sensitive puncture probe Download PDFInfo
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- CN204091954U CN204091954U CN201420565813.0U CN201420565813U CN204091954U CN 204091954 U CN204091954 U CN 204091954U CN 201420565813 U CN201420565813 U CN 201420565813U CN 204091954 U CN204091954 U CN 204091954U
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- needle
- needle body
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- connecting line
- temperature sensitive
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Abstract
A kind of medical temperature sensitive puncture probe, for solving the problem that may cause hot injury in tumour ablation treating operation to health tissues.This medical temperature sensitive puncture probe comprises: dual-core connecting line, needle handle, needle body and temperature sensor, and wherein, one end of needle body forms a fixed connection through needle handle and needle handle, and the other end is cut sth. askew formation syringe needle, and temperature sensor runs through the cavity of needle body inside; Temperature sensor comprises the tinsel of two unlike materials, two one metal wire outer surfaces cover insulating barrier, wherein the solder joint of one end laser spot welding formation is as measuring junction, be fixed on needle inner surface, the other end extends to needle handle through needle body, is electrically connected respectively in needle handle with two of dual-core connecting line cores.Adopt this medical temperature sensitive puncture probe and radio frequency puncture needle with the use of, can reduce puncture time, it is painful to reduce patient, reduces the requirement to operator's experience, the hot injury effectively to health tissues in prevention ablation surgery.
Description
Technical field
This utility model relates to tumour ablation treating technical field, particularly relates to a kind of medical temperature sensitive puncture probe.
Background technology
Radiofrequency ablation therapy technology be rise in nearly ten years Wicresoft, non-operative treatment medical skill, this technology is at present mainly for the treatment of the malignant tumor of human thyroid benign nodules or recurrence.The principle of this technology is introduced below in detail for ablation thyroid nodule.
Radio frequency refers to radio frequency, in the face of the effect mainly heat effect of organism.When the power frequency of radio frequency is at 200kHz to 1200kHz, friction generates heat mutually with the direction of curent change to cause tissue ion.When tissue local temperature reaches between 45 DEG C to 50 DEG C, tissue there will be dehydration, cell protein degeneration, the phenomenon of cell membrane disintegrate; When tissue local temperature reaches 70 DEG C, there is the necrosis of coagulability in tissue; When tissue local temperature reaches 100 DEG C, there is the phenomenon of carbonization in tissue; Desirable radio-frequency (RF) ablation temperature is about 72 DEG C, this shows, when using radiofrequency ablation therapy technology to organism, if misoperation may when killing tumor cell, simultaneously other to tumor health tissues produces certain damage.
Concrete radiofrequency ablation therapy technology utilizes the biological efficiency of thermal energy to carry out ablation to thyroid nodule, but nerve, blood vessel or organ etc. that the thermal energy produced when melting can close on thyroid nodule cause damage, even cause its afunction.This hot injury produced when melting thyroid nodule may cause thyroid nodule radiofrequency ablation therapy Post-operative complications, the such as damage of recurrent laryngeal nerve, trachea, esophagus, blood vessel, thyroid normal structure or parathyroid gland etc.
The measure of present prevention hot injury mainly contains following methods: liquid isolation strip method, lever sled melts method etc. from method, the floating method of compressing, mobile ablation techniques and gradation.But when implementing operation, heat can conduct, no matter be liquid isolation strip method, lever is prized from method etc., prevention hot injury that all can not be absolute, and method is melted in gradation at least needs two operations to melt tumor tissues, add the number of times of operation, too increase the misery of patient simultaneously.
Grasp the above-mentioned method preventing hot injury in operation, main operator must have the dissection of more than 10 years, the experience of Ultrasound intervention diagnosis and treatment.This radiofrequency ablation therapy technology whole process is implemented under ultrasound guidance in real time, radio frequency needle is adopted to carry out heating ablation to tumor cell, the situations such as vaporization or tissue degeneratiaon that produce in operation process usually cause ultrasonoscopy be interfered or change, now, be difficult to confirm the accurate location of radio frequency needle and the scope of heating ablation, easily cause the damage of normal thyroid tissue, nerve, blood vessel or organ.
The core of ablation technology is exactly that high temperature or low temperature cause tumor tissues damage, tissue degeneratiaon or tissue necrosis, but in implementation process, can cause the damage of normal structure equally, causes the generation of complication.Existing preventive measure arranges assessment of risks, the generation of complication is evaded by experience, this is to experienced, as 10 years, the above operator of working experience still can grasp, but in the face of a large amount of patient demand, veteran medical personnel's quantity is also nowhere near, macrocyclic like this vocational training is time-consuming, effort not only, also without science, rigorous quality control standard, this may increase the probability that patient produces complication after surgery.
Summary of the invention
Technical solutions of the utility model provide a kind of medical temperature sensitive puncture probe, may cause the problem of health tissues hot injury during in order to solve and to exist and implement radiofrequency ablation therapy technology in prior art.
The technical solution of the utility model scheme is as follows:
This medical temperature sensitive puncture probe, comprise: dual-core connecting line, needle handle, needle body and temperature sensor, wherein, one end of needle body forms a fixed connection through needle handle and needle handle, the other end is cut sth. askew formation syringe needle, the inclined-plane of syringe needle and needle body form the angle that is less than 45 degree, and needle body is hollow structure, and temperature sensor runs through the cavity of needle body inside; Temperature sensor comprises the tinsel of two unlike materials, wherein, the outer surface of two one metal wires is coated with insulating barrier, two one metal wires wherein one end laser spot welding formed solder joint as measuring junction, measuring junction is fixed on needle inner surface, the other end of two one metal wires extends to needle handle through needle body, is connected respectively in needle handle with two of dual-core connecting line cores.In one end that dual-core connecting line stretches out, the shape of needle handle is cuboid, and in one end that needle body stretches out, the shape of needle handle is cylinder, needle handle is provided with at least two convex stupefied, the convex stupefied outer surface being arranged at cuboid.
Syringe needle and needle body are formed in one, and the material that needle body and syringe needle adopt is rustless steel 1Cr18Ni9Ti, and the overall length of needle body and syringe needle is 100 millimeters, and external diameter is 0.9 millimeter, and the outer surface of needle body and syringe needle and inner surface are coated with insulating coating.
Two one metal wires of temp-sensitive sensor are copper wire and Contra wire.Two cores of dual-core connecting line are respectively copper core and corronil core, and two cores are wrapped with plastic insulating layer, are coated with the screen layer of copper mesh formation at the skin of plastic insulating layer.Copper wire in temp-sensitive sensor is connected with the copper core in dual-core connecting line, and the Contra wire in temp-sensitive sensor is connected with the corronil core in dual-core connecting line.
This utility model beneficial effect comprises: when carrying out tumour ablation treating, under ultrasound guidance, the medical temperature sensitive puncture probe provided in this utility model is inserted the region needing protection, such as, by thyroid danger triangle of face territory or important organ, comprise nerve, blood vessel etc., the temperature of the health tissues of contact is measured in real time, ensure that the temperature of health tissues is in normal body temperature, raise once tissue temperature, timely stopping emitting radio frequency signal, stop radio-frequency (RF) therapy, thus prevent radio frequency puncture needle to the hot injury of health tissues, improve therapeutic effect, reduce doctor to the requirement of operating experience.
Accompanying drawing explanation
Fig. 1 is the dissection schematic diagram of pathological changes thyroid and recurrent laryngeal nerve in prior art;
Fig. 2 is the structural representation of the medical temperature sensitive puncture probe in this utility model embodiment;
As shown in Figure 2: 1 be dual-core connecting line, 2 be needle handle, 3 for needle body.
Detailed description of the invention
In order to provide the prevention hot injury complication of more rigorous and scientific, improve the implementation of radiofrequency ablation therapy success rate, this utility model embodiment provides a kind of medical temperature sensitive puncture probe, be used for when radiofrequency ablation therapy and radio frequency puncture needle with the use of, below in conjunction with Figure of description, preferred embodiment of the present utility model is described.
Consult shown in Fig. 1, shadow region, the left side is the tumor on thyroid, the black region on tumor side is the recurrent laryngeal nerve near thyroid, when carrying out radiofrequency ablation therapy operation, by ultrasonic guidance can real-time monitored to inside of human body tissue, radio frequency puncture needle is now used to insert tumor tissues, radio frequency puncture needle can to make in tumor tissues temperature more than 60 DEG C, there is coagulation necrosis, make tumor tissues adstante febre, organizing around it also can be generated heat, if the position of radio frequency puncture needle is near recurrent laryngeal nerve, likely can cause the postoperative complication of recurrent laryngeal nerve hot injury.
Consult shown in Fig. 2, the structure of the medical temperature sensitive puncture probe that this utility model embodiment provides comprises:
Dual-core connecting line (1), needle handle (2), needle body (3) and temperature sensor, wherein, one end of needle body (3) forms a fixed connection through needle handle (2) and needle handle, the other end is cut sth. askew formation syringe needle, the inclined-plane of syringe needle and needle body form the angle that is less than 45 degree, needle body is hollow structure, and temperature sensor runs through the inner cavity of needle body (3); Temperature sensor comprises the tinsel of two unlike materials, wherein, the outer surface of two one metal wires is coated with insulating barrier, two one metal wires wherein one end laser spot welding formed solder joint as measuring junction, measuring junction is fixed on needle inner surface, the other end of two one metal wires extends to needle handle (2) through needle body (3), is connected respectively in needle handle with two cores of dual-core connecting line (1).
Concrete, the shape of needle handle (2) is the combination of a cylinder and a cuboid, and in one end that dual-core connecting line (1) stretches out, the shape of needle handle is cuboid; In one end that needle body (3) stretches out, the shape of needle handle is cylinder, and cylindrical base area is less than the base area of the cuboid be in contact with it, needle handle is provided with at least two convex stupefied, the convex stupefied outer surface being arranged at cuboid.Needle handle adopts 3D printing technique to make, and meeting ergonomic designs, be used for fixing needle body (3), and person easy to use is by holding, convenient puncture, convex stupefied slip when can avoid finger force that needle handle (2) outer surface is arranged.
Syringe needle is positioned at the front end of needle body, and needle body (3) is formed in one, and the material that needle body adopts is rustless steel 1Cr18Ni9Ti, and the overall length of needle body and syringe needle is 100 millimeters, and external diameter is 0.9 millimeter, and the outer surface of needle body and syringe needle and inner surface are coated with insulating coating.The inclined-plane of syringe needle and needle body form the angle that is less than 45 degree, and needle tip inner surface is fixedly connected with the solder joint that temperature sensor two one metal wire laser spot welding is formed, and this solder joint is measuring junction.Outer surface and the inner surface of needle body (3) are all coated with insulating coating.This coating has the feature of antiacid alkali resistant, anti-various organic solvent, and be dissolved in all solvents hardly, high temperature resistant, coefficient of friction is extremely low.The insulating coating of needle body inner surface can make the measuring junction of temperature sensor and needle body insulate; External surface coating makes medical temperature sensitive puncture probe be not easy to be subject to the interference of radiofrequency signal.
Syringe needle is also hollow structure, the solder joint that two wire that most advanced and sophisticated inner side is fixedly connected with temperature sensor are welded into, and temperature sensor is thermocouple element, and thermocouple element forms primarily of two one metal wires, is respectively copper wire and Contra wire.The thermocouple element that this material makes, the temperature range that medical temperature sensitive puncture probe can be tested is from negative 14 degrees Celsius to positive 95 degrees Celsius.When manufacturing the measuring junction of temp-sensitive sensor, first by smooth for two one metal wire process cleanings, then twist joint together, then adopt the technology of laser spot welding to be sintered together by end points, instantaneous temperature reaches more than 800 degrees Celsius, forms smooth, pure solder joint.Solder joint after such process improves the precision of thermometric.
The copper wire of temperature sensor and Contra wire run through whole needle body from syringe needle, and one end extends to needle handle through needle body, is connected respectively in needle handle with two of dual-core connecting line cores.
Wherein, two cores of dual-core connecting line (1) are respectively copper core and corronil core, and two cores are wrapped with plastic insulating layer, are coated with the screen layer of copper mesh formation at the skin of plastic insulating layer.Copper wire in temp-sensitive sensor is connected with the copper core in dual-core connecting line, and the Contra wire in temp-sensitive sensor is connected with the corronil core in dual-core connecting line.This dual-core connecting line for connecting temperature sensitive puncture probe and the server carrying out signal processing, and transmits the signal of temperature sensitive puncture probe generation to this server.
In sum, the scheme that this utility model embodiment provides can when carrying out tumour ablation treating, under ultrasound guidance, the medical temperature sensitive puncture probe provided in this utility model is inserted the region needing protection, such as, by thyroid danger triangle of face territory or important organ, comprise nerve, blood vessel etc., the temperature of the health tissues of contact is measured in real time, ensure that the temperature of health tissues is in normal body temperature, damage threshold is elevated to once tissue temperature, interrupt emitting radio frequency signal immediately, stop radio-frequency (RF) therapy, thus prevent radiofrequency to the hot injury of health tissues.
Claims (6)
1. a medical temperature sensitive puncture probe, is characterized in that, this puncture probe comprises:
Dual-core connecting line (1), needle handle (2), needle body (3) and temperature sensor, wherein, one end of described needle body (3) forms a fixed connection through described needle handle (2) and described needle handle, the other end is cut sth. askew formation syringe needle, the inclined-plane of syringe needle and described needle body form the angle that is less than 45 degree, needle body (3) is hollow structure, and described temperature sensor runs through the cavity of described needle body inside; Described temperature sensor comprises the tinsel of two unlike materials, wherein, the outer surface of two one metal wires is coated with insulating barrier, two one metal wires wherein one end laser spot welding formed solder joint as measuring junction, described measuring junction is fixed on needle inner surface, the other end of two one metal wires extends to needle handle (2) through described needle body (3), is connected respectively in needle handle with two cores of described dual-core connecting line (1).
2. medical temperature sensitive puncture probe as claimed in claim 1, it is characterized in that: the one end of stretching out at described dual-core connecting line (1), the shape of its needle handle is cuboid, in one end that described needle body (3) stretches out, the shape of needle handle is cylinder, described needle handle is provided with at least two convex stupefied, the convex stupefied outer surface being arranged at described cuboid.
3. medical temperature sensitive puncture probe as claimed in claim 1, it is characterized in that: described syringe needle and described needle body are formed in one, the material that needle body (3) adopts is rustless steel 1Cr18Ni9Ti, the overall length of needle body and syringe needle is 100 millimeters, external diameter is 0.9 millimeter, and the outer surface of described needle body and described syringe needle and inner surface are coated with insulating coating.
4. medical temperature sensitive puncture probe as claimed in claim 1, is characterized in that: two one metal wires of temperature sensor are copper wire and Contra wire.
5. medical temperature sensitive puncture probe as claimed in claim 1, it is characterized in that: two cores of described dual-core connecting line (1) are respectively copper core and corronil core, two cores are wrapped with plastic insulating layer, are coated with the screen layer of copper mesh formation at the skin of plastic insulating layer.
6. medical temperature sensitive puncture probe as claimed in claim 1, is characterized in that: the copper wire in temperature sensor is connected with the copper core of (1) in dual-core connecting line, and the Contra wire in temperature sensor is connected with the corronil core in dual-core connecting line (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420565813.0U CN204091954U (en) | 2014-09-29 | 2014-09-29 | A kind of medical temperature sensitive puncture probe |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420565813.0U CN204091954U (en) | 2014-09-29 | 2014-09-29 | A kind of medical temperature sensitive puncture probe |
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| Publication Number | Publication Date |
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| CN204091954U true CN204091954U (en) | 2015-01-14 |
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| CN201420565813.0U Expired - Lifetime CN204091954U (en) | 2014-09-29 | 2014-09-29 | A kind of medical temperature sensitive puncture probe |
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| CN (1) | CN204091954U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106236033A (en) * | 2016-09-05 | 2016-12-21 | 上海熙洛生物技术有限公司 | The supporting thermometric needle of ultrasonic tumor instrument and processing technology thereof |
| CN113262044A (en) * | 2021-05-14 | 2021-08-17 | 云南普慧医疗科技有限公司 | Microwave ablation needle capable of measuring temperature |
-
2014
- 2014-09-29 CN CN201420565813.0U patent/CN204091954U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106236033A (en) * | 2016-09-05 | 2016-12-21 | 上海熙洛生物技术有限公司 | The supporting thermometric needle of ultrasonic tumor instrument and processing technology thereof |
| CN113262044A (en) * | 2021-05-14 | 2021-08-17 | 云南普慧医疗科技有限公司 | Microwave ablation needle capable of measuring temperature |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20150114 |