CN203263524U - Low-temperature freezing minimally invasive surgical treatment probe - Google Patents
Low-temperature freezing minimally invasive surgical treatment probe Download PDFInfo
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- CN203263524U CN203263524U CN 201320236694 CN201320236694U CN203263524U CN 203263524 U CN203263524 U CN 203263524U CN 201320236694 CN201320236694 CN 201320236694 CN 201320236694 U CN201320236694 U CN 201320236694U CN 203263524 U CN203263524 U CN 203263524U
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Abstract
The utility model belongs to the field of medical instruments, and particularly relates to a low-temperature freezing minimally invasive surgical treatment probe which can be inserted into human body visceral organs safely to carry out cryotherapy aiming at the technical defect that a low-temperature freezing surgical treatment probe in the prior art can not be inserted into the visceral organs to carry out cryotherapy. The low-temperature freezing minimally invasive surgical treatment probe comprises an inner tube and a middle tube, the inner tube and the middle tube are arranged in a nested mode, the inner tube forms an input channel, an output channel is formed between the inner tube and the middle tube, the back end of the inner tube can be connected with a liquid nitrogen input device, and the back end of the middle tube is communicated with the outside. The low-temperature freezing minimally invasive surgical treatment probe is characterized in that the middle tube is sleeved with an outer tube, a vacuum heat insulation channel is formed between the outer tube and the middle tube, the front end and the back end of the outer tube are closed, a head portion of the outer tube, a head portion of the middle tube and a head portion of the inner tube are matched in position, the back end of the outer tube is shorter than the back end of the middle tube, the front end of the outer tube is connected with a closed treatment outer shell in an abutting mode, the front end of the middle tube and the front end of the inner tube are opened, and therefore the front end of the output channel and the front end of the input channel are communicated with a closed inner cavity of the treatment outer shell.
Description
Technical field
This utility model belongs to medical instruments field, particularly a kind of freezing minimally-invasive treatment probe that gos deep into the inside of human body use.
Background technology
along with applying with the upgrading of Cryogenic instrument for surgical purpose technology of cold therapy technology improved, current cryosurgery is treated to human internal organ deep development by shallow table, prostatic hyperplasia as Urology Surgery, the dysfunctional uterine hemorrhage of gynecological, the rectal cancer of anorectal section and the cold therapies such as the tumor of thalamus of neurosurgery, but aforementioned operation is higher to the specification requirement of freezing therapeutic instrument, the head that common cold therapy probe is used by the front end cold therapy and the handle at middle feeler lever section and rear portion etc. form, because at the inner liquid nitrogen that can carry ultralow temperature for the treatment of middle probe, so require the feeler lever section need have good heat-insulating property, when the feeler lever section that so just can prevent from treating probe is passed human normal tissue because without insulated heat to producing unexpected cold injury by way of tissue, therefore the surface of feeler lever section must remain room temperature, if the poor insulation property of feeler lever section will produce dew and frosting on its surface, bring various complication to treatment.The outer matrix section of feeler lever section of existing freezing treatment probe therefore existing probe can only be used for the cold therapy of shallow table, is not suitable for the cold therapy of going deep into internal organs inside without heat-insulating protective layer.
The utility model content
The technical assignment of the technical problems to be solved in the utility model and proposition is that the feeler lever section that overcomes existing freezing treatment probe does not have heat-insulating protective layer and causes probe can not go deep into the technological deficiency that cold therapy is carried out in internal organs inside, provides a kind of and can go deep into safely the freezing minimally-invasive treatment probe that cold therapy is carried out in human internal organ inside.
the technical scheme that this utility model technical solution problem adopts: freezing minimally-invasive treatment probe, comprise nested inner tube and intervalve, described inner tube forms input channel, form output channel between inner tube and intervalve, the inner tube rear end can connect the liquid nitrogen input equipment, the conducting of intervalve rear end is extraneous, it is characterized in that described intervalve overcoat has an outer tube, form the adiabatic passage of vacuum between outer tube and intervalve, the rear and front end sealing of outer tube, outer tube head and intervalve head and inner tube head position coupling, outer tube back-end is shorter than the intervalve rear end, airtight treatment shell of outer tube front end docking, uncovered output channel and the input channel front end of making of the front end of intervalve and inner tube all is communicated with the airtight inner chamber for the treatment of shell.by put again the outer tube of a sealing two ends outside having the inner tube structure nested with intervalve now, utilize the interlayer between outer tube and intervalve to remain the room temperature state as the feeler lever section that heat insulation layer guarantees to treat in the middle of probe, because all seal the rear and front end of outer tube, forward end seal docking one treatment shell, therefore this interlayer after evacuation as insulated heat, make probe only provide freezing at the treatment housing parts of probe front going deep into the internal organs interior section, and the feeler lever section in the middle part of probe all has reliable and secure insulated heat, realize safe and reliable freezing minimally-invasive treatment.In cold therapy, liquid nitrogen is from input channel input arrival treatment shell inner cavity foremost, the gas nitrogen of having vaporized and the part not biphase cryogen of the liquid nitrogen formation of vaporization are discharged to the external world through output channel, due to output channel around input channel, so output channel in biphase cryogen can also provide insulation effect to the liquid nitrogen in input channel.In addition, at the outer tube rear portion, an evacuation interface is set the interlayer between outer tube and intervalve (being heat insulation layer) is carried out evacuation, after waiting the vacuum that reaches setting, aforementioned evacuation interface is shut, this repeats no more for conventional prior art.
As the further of technique scheme improved and replenish, this utility model adopts following technical measures: the rear portion hole enlargement of described outer tube is also filled active carbon in the adiabatic passage of hole enlargement place.Add the placement active carbon by carrying out hole enlargement at the outer tube rear portion, utilize escaping gas molecule in the vacuum interlayer between activated carbon adsorption outer tube and intervalve, prevent that these gas molecules from making the insulation effect that Brownian movement reduces heat insulation layer back and forth, improve the safety that probe uses.
One thermocouple wire is set in described output channel, the thermocouple wire front end fits on the inwall for the treatment of shell, laminating points is as the thermocouple temperature measurement point, and the rear end of thermocouple wire is derived and connected the thermometric display by being located at terminal on the sidewall of intervalve rear end.The effect of thermocouple wire is the temperature of Measurement accuracy cold therapy shell, terminal is connected with the thermometric display can show the real-time temperature of thermocouple temperature measurement point, then accurately control the cold therapy temperature for the treatment of end of probe (namely treating side wall of outer shell) by regulating the liquid nitrogen input flow rate, guarantee the good result of cold therapy.
In described treatment shell inner cavity, copper mesh is set.The effect of copper mesh is the cold-storage efficient that improves liquid nitrogen vaporization in the treatment shell inner cavity.
Described outer tube wall thickness is greater than the intervalve wall thickness, and the intervalve wall thickness is greater than the inner tube wall thickness.Such thickness setting can be avoided the vacuum layer generation deformation of adiabatic passage.
Described treatment shell can be semicircle or other shape that is suitable for treating, and treatment shell and outer tube front end joint are arc-shaped transition.According to the needs of actual therapeutic situation, the treatment shell can be semicircle or other various shapes that are complementary with therapentic part, satisfies the different needs of various cold therapies; The docking of arc-shaped transition can guarantee that the front end of probe can not cause accidental injury to the tissue of approach in going deep into the inside of human body process.
This utility model puts an outer tube again outside having the inner tube structure nested with intervalve now; utilize interlayer between outer tube and intervalve as heat insulation layer; to after this interlayer vacuum-pumping as insulated heat; make the feeler lever section in the middle of probe have reliable and secure insulated heat, this utility model can go deep into safely human internal organ inside and carry out safe and reliable freezing minimally-invasive treatment.
Description of drawings
Fig. 1: structural representation of the present utility model.
In figure: 1. inner tube, 2. intervalve, 3. outer tube, 4. muffler, 5. evacuation interface, 6. terminal, 7. heat insulation layer, 8. output channel, 9. input channel, 10. point for measuring temperature, 11. treatment shells, 12. copper mesh, 13. active carbons, 14 thermocouple wires.
The specific embodiment
Below in conjunction with description of drawings and the specific embodiment, this utility model is described further.
as shown in Figure 1, freezing minimally-invasive treatment probe, comprise nested inner tube 1 and intervalve 2, described inner tube 1 forms input channel 9, form output channel 8 between inner tube 1 and intervalve 2, inner tube 1 rear end can connect the freezing liquid input equipment, intervalve 2 rear end conductings are extraneous, intervalve 2 overcoats have an outer tube 3, form the adiabatic passage 7 of evacuation between outer tube 3 and intervalve 2, outer tube 3 wall thickness are greater than intervalve 2 wall thickness, intervalve 2 wall thickness are greater than inner tube 1 wall thickness, the rear and front end sealing of outer tube, outer tube 3 heads and intervalve 2 heads and inner tube 1 head coupling, outer tube 3 rear ends are shorter than intervalve 2 rear ends, airtight hemispherical treatment shell 11(of outer tube 3 front end docking can be also the various shapes of other applicable treatment), treatment shell 11 is arc-shaped transition with outer tube 3 front end joints, uncovered output channel 8 and input channel 9 front ends of making of the front end of intervalve 2 and inner tube 1 all are communicated with the inner chamber for the treatment of shell 11, the interior thermocouple wire 14 that arranges of output channel 8, thermocouple wire 14 front ends fit on the inwall for the treatment of shell 11, described laminating points is as thermocouple temperature measurement point 10, derive by the terminal 6 of being located on intervalve 2 rear end sidewalls the rear end of thermocouple wire 14, outer tube 3 rear portion hole enlargements and at the interior filling active carbon 13 of the adiabatic passage 7 of hole enlargement place.In addition, intervalve 2 outer walls are provided with muffler 4 and are communicated with output channel 8, and described muffler 4 and ambient atmosphere are communicated with; Outer tube 3 outer walls are provided with evacuation interface 5 and are communicated with adiabatic passages 7, and described evacuation interface 5 is used for the interior evacuation of adiabatic passage 7, just shut after exhausting vacuum.
During use, probe is inserted tissue, make the treatment shell of probe front arrive therapentic part, then liquid nitrogen is inputted arrival treatment shell inner cavity foremost from input channel, only have this moment the treatment shell of probe front to keep freezing low temperature, the liquid nitrogen of vaporizing after cold therapy is discharged to the external world from muffler through output channel, and the feeler lever section in the middle of whole process middle probe remains the room temperature state.
Claims (6)
1. freezing minimally-invasive treatment probe, comprise nested inner tube (1) and intervalve (2), described inner tube (1) forms input channel (9), form output channel (8) between inner tube (1) and intervalve (2), inner tube (1) rear end can connect the liquid nitrogen input equipment, the conducting of intervalve (2) rear end is extraneous, it is characterized in that described intervalve (2) overcoat has an outer tube (3), form the adiabatic passage (7) of vacuum between outer tube (3) and intervalve (2), the rear and front end sealing of outer tube, outer tube (3) head and intervalve (2) head and inner tube (1) head position coupling, outer tube (3) rear end is shorter than intervalve (2) rear end, airtight treatment shell (11) of outer tube (3) front end docking, the uncovered airtight inner chamber that makes output channel (8) and input channel (9) front end all be communicated with treatment shell (11) of the front end of intervalve (2) and inner tube (1).
2. freezing minimally-invasive treatment probe according to claim 1, is characterized in that described outer tube (3) rear portion hole enlargement and fill active carbon (13) in the adiabatic passage (7) of hole enlargement place.
3. freezing minimally-invasive treatment probe according to claim 1 and 2, it is characterized in that arranging in described output channel (8) thermocouple wire (14), thermocouple wire (14) front end fits on the inwall for the treatment of shell (11), laminating points is as thermocouple temperature measurement point (10), and the rear end of thermocouple wire (14) is derived and connected the thermometric display by being located at terminal (6) on the sidewall of intervalve (2) rear end.
4. freezing minimally-invasive treatment probe according to claim 3, is characterized in that in described treatment shell (11) inner chamber, copper mesh (12) being set.
5. freezing minimally-invasive treatment probe according to claim 4, is characterized in that described outer tube (3) wall thickness greater than intervalve (2) wall thickness, and intervalve (2) wall thickness is greater than inner tube (1) wall thickness.
6. freezing minimally-invasive treatment probe according to claim 1, is characterized in that described treatment shell (11) for semicircle, and treatment shell (11) is arc-shaped transition with outer tube (3) front end joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320236694 CN203263524U (en) | 2013-05-03 | 2013-05-03 | Low-temperature freezing minimally invasive surgical treatment probe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320236694 CN203263524U (en) | 2013-05-03 | 2013-05-03 | Low-temperature freezing minimally invasive surgical treatment probe |
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| Publication Number | Publication Date |
|---|---|
| CN203263524U true CN203263524U (en) | 2013-11-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201320236694 Expired - Fee Related CN203263524U (en) | 2013-05-03 | 2013-05-03 | Low-temperature freezing minimally invasive surgical treatment probe |
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| CN (1) | CN203263524U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107157570A (en) * | 2017-04-21 | 2017-09-15 | 重庆大学 | Resistance-type liquid nitrogen minimally-invasive cold knife system |
| CN107714172A (en) * | 2017-11-10 | 2018-02-23 | 上海导向医疗系统有限公司 | Thermometric and the cryoablation pin of rewarming function are realized by thermocouple wire simultaneously |
| CN108498163A (en) * | 2018-04-24 | 2018-09-07 | 海杰亚（北京）医疗器械有限公司 | The vacuum interlayer treatment process of fission connection cryoablation needle |
| CN110301972A (en) * | 2019-07-26 | 2019-10-08 | 四川海盛杰低温科技有限公司 | A kind of liquid nitrogen cryotherapy equipment of contact |
| CN111023653A (en) * | 2019-12-23 | 2020-04-17 | 上海蜀淘仪器科技有限公司 | Two-stage low-temperature insertion rod applied to ultra-vacuum environment |
-
2013
- 2013-05-03 CN CN 201320236694 patent/CN203263524U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107157570A (en) * | 2017-04-21 | 2017-09-15 | 重庆大学 | Resistance-type liquid nitrogen minimally-invasive cold knife system |
| CN107714172A (en) * | 2017-11-10 | 2018-02-23 | 上海导向医疗系统有限公司 | Thermometric and the cryoablation pin of rewarming function are realized by thermocouple wire simultaneously |
| CN108498163A (en) * | 2018-04-24 | 2018-09-07 | 海杰亚（北京）医疗器械有限公司 | The vacuum interlayer treatment process of fission connection cryoablation needle |
| CN108498163B (en) * | 2018-04-24 | 2020-07-28 | 海杰亚（北京）医疗器械有限公司 | Vacuum interlayer treatment process for split connection cryoablation needle |
| CN110301972A (en) * | 2019-07-26 | 2019-10-08 | 四川海盛杰低温科技有限公司 | A kind of liquid nitrogen cryotherapy equipment of contact |
| CN110301972B (en) * | 2019-07-26 | 2024-03-08 | 海尔生物医疗科技(成都)有限公司 | Contact type liquid nitrogen freezing treatment equipment |
| CN111023653A (en) * | 2019-12-23 | 2020-04-17 | 上海蜀淘仪器科技有限公司 | Two-stage low-temperature insertion rod applied to ultra-vacuum environment |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131106 |
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| CF01 | Termination of patent right due to non-payment of annual fee |