CN204293254U - One is novel melts one pole pin - Google Patents
One is novel melts one pole pin Download PDFInfo
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- CN204293254U CN204293254U CN201420539046.6U CN201420539046U CN204293254U CN 204293254 U CN204293254 U CN 204293254U CN 201420539046 U CN201420539046 U CN 201420539046U CN 204293254 U CN204293254 U CN 204293254U
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Abstract
One is novel melts one pole pin, it is characterized in that comprising shank (1), syringe needle (2), thermistor coating (3), insulation tube (4) and external cable link (5), described shank (1) and syringe needle (2) are an entirety, syringe needle (2) has the tip that at least one is acute angle, the diameter of shank (1) is less than the maximum gauge of syringe needle (2), shank (1) is arranged with insulation tube (4), syringe needle (2) surface is provided with thermistor coating (3), shank (1) end is external cable link (5).Basis is novel melts this characteristic that one pole pin utilizes PTC thermistor, coordinating radio-frequency signal generator, being designed to for heating target biological tissue targetedly.Heat-treatment temperature range, such as about 90 DEG C to 100 DEG C, thus when realizing solidified structure, ablation needle is not sticky glutinous, does not cause again hemorrhage complication equivalent risk.
Description
Technical field
The utility model relates to Medical Instruments technical field, especially a kind ofly novelly melts one pole pin.
Background technology
RF ablation (RFA) is a kind of Minimally Interventional Therapy method, and nineteen ninety Rossi and Mc gahan etc. report that RFA is applied to melting of animal's liver tissue at first, subsequently by the liver neoplasm of this technology treatment mankind.At present, RFA technology has been widely used in the disease for the treatment of the multiple organ of whole body, except can deactivation tumour, knurl load can also be reduced and reach pain relieving, reduce the objects such as hormone secretion, also have research to be applied to non-tumor disease as treatment hypersplenia (spleen is high) etc. in addition.RFA is a kind of knub thermotherapy, its general principle utilizes heat energy to damage tumor tissues, sending rf wave by electrode makes the ion in its surrounding tissue and the large molecular oscillation of polarity clash into frictional heating, is heated to tumor area effectively treat temperature range and maintain certain hour with killing off tumor cells.Meanwhile, radio frequency thermal effect should be able to make the blood vessel of surrounding tissue solidify, and forms a reaction zone, makes it to prevent metastases to tumor feeding.
For the control of degree of ablation, existing radio-frequency ablation technique adopts the good temperature of impedance Control to control two kinds of modes usually.
Impedance Control adopts the impedance of 400-500 ohm, but concrete impedance is difficult to flexible adjustment, and the too small meeting of impedance causes terminating in advance to melt, and melt not thorough, impedance is excessive, easily causes again tissue sticky glutinous.
Temperature controls usually to arrange 105 degrees Celsius for threshold temperature, easily causes local ablation degree uneven.
PTC thermistor is the semiconductor resistor that a kind of typical case has temperature sensitivity, when exceeding certain temperature, its resistance value along with the rising of temperature be increasing of step evolution, PTC is the abbreviation of PositiveTemperatureCoefficient, be meant to positive temperature coefficient, the semi-conducting material that general reference positive temperature coefficient is very large or components and parts.Usually the PTC that we mention refers to semistor, is called for short PTC thermistor.Its resistance value of semistor presents the increase of step evolution along with the rising of PTC thermistor body temperature, and temperature is higher, and resistance value is larger.
The utility model will utilize the characteristic of PTC thermistor, design the novel of a kind of Based Intelligent Control and melt one pole pin.
Summary of the invention
The purpose of this utility model is to provide a kind of and novelly melts one pole pin, utilizes the characteristic of PTC thermistor to overcome impedance Control and temperature controlled drawback.
The technical solution of the utility model is:
One is novel melts one pole pin, comprise shank 1, syringe needle 2, thermistor coating 3, insulation tube 4 and external cable link 5, described shank 1 and syringe needle 2 are an entirety, syringe needle 2 has the tip that at least one is acute angle, the diameter of shank 1 is less than the maximum gauge of syringe needle 2, shank 1 is arranged with insulation tube 4, syringe needle 2 surface is provided with thermistor coating 3, and shank 1 end is external cable link 5.
The material of described insulation tube 4 is polytetrafluoroethylene (PTFE) (PTFE) or Teflon.
The material of described shank 1, syringe needle 2 is medical 304 stainless steel materials.
The angle at described syringe needle 2 tip is 10 °-20 °.Be preferably 14.5 °
The beneficial effects of the utility model are:
Of the present inventionly novelly melt this characteristic that one pole pin utilizes PTC thermistor, coordinating radio-frequency signal generator, being designed to for heating target biological tissue targetedly.Heat-treatment temperature range, such as about 90 DEG C to 100 DEG C, thus when realizing solidified structure, ablation needle is not sticky glutinous, does not cause again hemorrhage complication equivalent risk.
The novel one pole pin that melts of the present invention utilizes PTC thermistor temperature higher, the characteristic that resistance value is larger, add that PTC thermistor of the present invention is distributed in the Zone Full melted, be different from existing overall break-make, the present invention can realize local break-make, until ablation areas all reach predetermined in a organized way and melt temperature, realize the accurate control of melting, make target complete target position all can reach fully and completely ablation effect.And, once the tissue of ablation areas reaches predetermined temperature, just automatically disconnect, excessive injury can not be caused to tissue.
Accompanying drawing explanation
Fig. 1 is the novel structural representation melting one pole pin of the present invention.
In figure: 1 be shank, 2 be syringe needle, 3 be thermistor coating, 4 be insulation tube, 5 for external cable link.
Detailed description of the invention
Below in conjunction with accompanying drawing, the invention will be further described:
As Fig. 1, one is novel melts one pole pin, comprise shank 1, syringe needle 2, thermistor coating 3, insulation tube 4 and external cable link 5, described shank 1 and syringe needle 2 are an entirety, syringe needle 2 has the tip that at least one is acute angle, and the diameter of shank 1 is less than the maximum gauge of syringe needle 2, and shank 1 is arranged with insulation tube 4, syringe needle 2 surface is provided with thermistor coating 3, and shank 1 end is external cable link 5.
The material of insulation tube 4 is polytetrafluoroethylene (PTFE) (PTFE) or Teflon.
The material of shank 1, syringe needle 2 is medical 304 stainless steel materials.
The angle at syringe needle 2 tip is 10 °-20 °.Be preferably 14.5 °
For example, of the present utility modelly novelly one pole pin is melted: external diameter
internal diameter
insulating sleeve material: Teflon, color is transparent, before pyrocondensation, external diameter 2.0 wall thickness 0.05, after pyrocondensation, external diameter 1.5, wall thickness 0.1.
Embodiment recited above is only be described preferred embodiment of the present utility model; not design of the present utility model and scope are limited; do not departing under the utility model design concept prerequisite; the various modification that in this area, common engineers and technicians make the technical solution of the utility model and improvement; all should fall into protection domain of the present utility model, the technology contents of the utility model request protection is all recorded in detail in the claims.
Claims (3)
1. one kind novelly melts one pole pin, it is characterized in that comprising shank (1), syringe needle (2), thermistor coating (3), insulation tube (4) and external cable link (5), described shank (1) and syringe needle (2) are an entirety, syringe needle (2) has the tip that at least one is acute angle, the diameter of shank (1) is less than the maximum gauge of syringe needle (2), shank (1) is arranged with insulation tube (4), syringe needle (2) surface is provided with thermistor coating (3), and shank (1) end is external cable link (5); The angle at described syringe needle (2) tip is 10 °-20 °.
2. one according to claim 1 is novel melts one pole pin, it is characterized in that the material of described insulation tube (4) is polytetrafluoroethylene (PTFE) or Teflon.
3. one according to claim 1 is novel melts one pole pin, it is characterized in that described shank (1), the material of syringe needle (2) is medical 304 stainless steel materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420539046.6U CN204293254U (en) | 2014-09-18 | 2014-09-18 | One is novel melts one pole pin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420539046.6U CN204293254U (en) | 2014-09-18 | 2014-09-18 | One is novel melts one pole pin |
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| Publication Number | Publication Date |
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| CN204293254U true CN204293254U (en) | 2015-04-29 |
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| CN201420539046.6U Active CN204293254U (en) | 2014-09-18 | 2014-09-18 | One is novel melts one pole pin |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104188721A (en) * | 2014-09-18 | 2014-12-10 | 安隽医疗科技(南京)有限公司 | Novel ablation monopolar needle |
| CN105147387A (en) * | 2015-07-02 | 2015-12-16 | 安隽医疗科技(南京)有限公司 | Radiofrequency ablation unipolar catheter |
| WO2016041370A1 (en) * | 2014-09-18 | 2016-03-24 | Angel Medical Technology (Nanjing) Co., Ltd. | Ablation device |
-
2014
- 2014-09-18 CN CN201420539046.6U patent/CN204293254U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104188721A (en) * | 2014-09-18 | 2014-12-10 | 安隽医疗科技(南京)有限公司 | Novel ablation monopolar needle |
| WO2016041370A1 (en) * | 2014-09-18 | 2016-03-24 | Angel Medical Technology (Nanjing) Co., Ltd. | Ablation device |
| CN105147387A (en) * | 2015-07-02 | 2015-12-16 | 安隽医疗科技(南京)有限公司 | Radiofrequency ablation unipolar catheter |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |