CN211723136U - Multi-probe intervention type side-opening temperature measuring device - Google Patents
Multi-probe intervention type side-opening temperature measuring device Download PDFInfo
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- CN211723136U CN211723136U CN201922082885.5U CN201922082885U CN211723136U CN 211723136 U CN211723136 U CN 211723136U CN 201922082885 U CN201922082885 U CN 201922082885U CN 211723136 U CN211723136 U CN 211723136U
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Abstract
A multi-probe intervention type side-opening temperature measuring device comprises an intervention type temperature measuring needle, a multi-channel temperature measuring instrument and the like. The interventional type temperature measuring needle can be punctured to the edge of a tumor tissue through skin, a T-shaped thermocouple temperature measuring end is arranged at the front end in a hollow needle body, temperature information is transmitted to a multi-channel temperature measuring instrument through a temperature measuring lead, a connecting wire and a switching plug seat, high-definition display is carried out on an OLED display screen through a high-performance amplifier, a high-precision analog-digital acquisition chip, a high-speed operation processing single chip microcomputer and a display system of the system, the temperature measuring and displaying range is 0-150 ℃, the resolution is 0.1 ℃, and the precision is +/-0.5 ℃. In the clinical minimally invasive intervention operation, the utility model discloses can implement the real-time temperature measurement of multiple spot to the tumour, especially to the massif or irregular tumour edge to judge whether the tumor cell tissue survives and reach the treatment purpose of tumour coagulability necrosis, thereby effectively provide accurate reliable side-opening temperature measurement means for clinical tumour thermal ablation treatment's safety.
Description
Technical Field
The patent of the utility model relates to a multi-probe intervention formula side-opening temperature measuring device adopts multiple spot temperature measurement end percutaneous puncture to tumour tissue edge, comes its temperature variation of real-time measurement, can extensively be used for clinical tumour heat to melt the treatment operation, belongs to medical active heat and melts technical field.
Background
With the rapid development of modern high and new technologies and bioengineering, active thermal ablation technology has been widely applied in the field of minimally invasive interventional therapy of clinical tumors, such as radiofrequency ablation (RFA), microwave ablation (MWA), laser ablation (laserablation), cryoablation (cryoablation, argon-helium knife), and the like.
In the late 60 s and early 70 s of the 20 th century, based on observations and studies of cellular ultrastructure, it was recognized that cell survival was related to temperature and duration: at the temperature of 43-45 ℃, the change of the tissue presents time-dependent reversible damage; when the temperature is higher than 47 ℃, the activity of various enzymes in the cells is reduced on the basis of the change of 43-45 ℃; dehydrating the cells or tissues at 50-60 ℃, and coagulating the protein. When the temperature is 90-100 ℃, cells or tissues are dehydrated seriously, and proteins are coagulated; when the temperature is higher than 100 ℃, the cells or tissues are boiled to generate steam; carbonizing cells or tissues at 150 deg.C; when the temperature is higher than 300 ℃, the tissue is vaporized; when the temperature is more than 500 ℃, the tissue can be burnt, and the like. It is also recognized that there are two forms of cell death, apoptosis and necrosis.
In the clinical minimally invasive active interventional therapy of tumors, when the temperature reaches above 60-63 ℃, tumor cell tissues become grayish white or yellowish white solid due to dehydration and drying and protein coagulation, and coagulation necrosis is formed, so that the aim of in-situ inactivated thermal ablation is fulfilled. Therefore, in clinical thermal ablation surgery, an interventional temperature measuring end is urgently needed to measure the temperature of the edge of the tumor tissue in real time so as to judge whether the tumor cell tissue survives in the minimally invasive interventional therapy process and achieve the purpose of treating the tumor coagulation necrosis.
Disclosure of Invention
The utility model discloses a multi-probe intervention formula side-opening temperature measuring device, the key technology that solves is, adopts a plurality of intervention formula temperature measurement needles percutaneous puncture to tumour edge, to the tumour, especially implements the measurement of multiple spot real-time temperature to gross tumor or irregular tumour edge, judges whether tumour cell tissue survives in clinical minimal access intervention treatment process to reach the treatment purpose of tumour coagulability necrosis.
The utility model discloses a many probes intervene formula side-opening temperature measuring device mainly includes: the insertion type temperature measuring needle and the connecting wire thereof, the adapter plug and the multi-channel temperature measuring instrument. The interventional temperature measuring needle is a hollow needle body which can be punctured to the edge of a tumor tissue through skin, and is characterized in that: the temperature measuring device also comprises a T-shaped thermocouple temperature measuring end, a temperature measuring lead, a puncture needle point, a connecting wire, an adapter plug and a metal short circuit sleeve, wherein the T-shaped thermocouple temperature measuring end, the temperature measuring lead, the puncture needle point, the connecting wire and the adapter plug are arranged in the hollow needle body; the multichannel thermoscope mainly includes: the device comprises a 24V direct-current low-voltage power supply, a multi-channel temperature information acquisition unit, a central operation amplification and processing unit and a multi-channel temperature display system. The utility model discloses a temperature measurement and display range are 0 ~ 150 ℃, and resolution ratio is 0.1 ℃, and the temperature precision is 0.5 ℃.
The intervention type temperature measuring needle also has the further improvement:
1. the puncture needle head is made of medical grade stainless steel materials, the front end of the puncture needle head is a conical needle body and has enough puncture force, the excircle of the tail part of the puncture needle head is a circular bead cylinder, and the inner hollow circular hole is deep to the front end of the cone.
2. The temperature measuring needle rod is a medical seamless thin-wall stainless steel tube, the front end of the temperature measuring needle rod is sleeved on the outer circle of the shoulder at the tail part of the puncture needle head and is fixed by welding, and the temperature measuring needle body capable of puncturing the human tissue through the skin is formed.
3. The temperature measuring needle body is internally provided with a T-shaped thermocouple made of a high-insulation-strength enameled pure copper wire and a high-insulation-strength enameled copper-nickel alloy wire, namely, the foremost end of the high-insulation-strength enameled pure copper wire and the high-insulation-strength enameled copper-nickel alloy wire is fused into a temperature measuring end of the T-shaped thermocouple by adopting a laser welding process.
4. The T-shaped thermocouple temperature measuring end is assembled to the foremost end of the inner hole of the puncture needle head, and the gap between the T-shaped thermocouple temperature measuring end and the inner hole of the puncture needle head is filled with high-grade heat-conducting glue, so that the temperature measuring sensitivity is improved.
5. The connecting wire is a double-wire with a metal braided shielding layer, the front ends of the double-wire are respectively in short-circuit welding with the tail parts of the two temperature measuring conducting wire wires of the T-shaped thermocouple by using the same end, and the front end of the outer metal braided layer is in shielding short-circuit connection with the tail end of the temperature measuring needle rod body through the metal short-circuit sleeve sleeved on the excircle of the temperature measuring conducting wire wires and the tail end of the temperature measuring needle rod body, so that the whole inserted temperature measuring needle has good electromagnetic compatibility.
6. The adapter plug is a three-core aviation plug, the tail ends of the double-conductor of the connecting wire are respectively in one-to-one correspondence with two terminals in the adapter plug for homonymy end short circuit welding, and the outer metal shielding layer of the connecting wire is in shielding type short circuit welding with the other terminal of the adapter plug.
7. And an operating handle is assembled and fixed at the joint of the temperature measuring needle rod and the connecting wire.
And the temperature measuring end of the T-shaped thermocouple at the front end of the puncture needle head transmits the measured temperature information to the multi-channel temperature measuring instrument through the temperature measuring lead, the connecting wire and the adapter plug seat.
This temperature measuring device multichannel thermoscope still has further improvement:
1. the power supply adopts a 220V/50Hz network power socket for feeding, and also comprises a power switch, a lightning protection filter and a switching power supply, and then the power switch, the lightning protection filter and the switching power supply are converted into 24V direct current low-voltage power supply.
2. The 24V direct-current low-voltage power supply feeds power to the fan and the EMI module respectively, the EMI module converts the power into three paths to supply power in an isolated mode, one path of 24V/+/-5V isolated power supply feeds the temperature acquisition circuit, one path of 24V/5V isolated power supply feeds the CPU operation processing unit, and the other path of 24V/5V isolated power supply feeds the display system.
3. The multi-channel temperature acquisition system mainly comprises a switching socket, a multi-channel temperature acquisition conditioning circuit and a 12-bit high-performance analog-digital chip.
4. The central operation processing unit mainly comprises a signal amplifier, a 16-bit DSPIC series high-speed operation processing singlechip and an auxiliary circuit thereof.
5. The multi-path display system mainly comprises a display interface, a multi-path OLED display circuit and a plurality of 1.3-inch OLED display screens.
The temperature measuring device adopts a T-shaped thermocouple temperature measuring technology, and has the most prominent characteristics that: has the advantages of good linearity, large thermoelectromotive force and high sensitivity. The interventional temperature measuring needle has a stable and reliable structure, so as to ensure that a temperature measuring end (a temperature measuring head) of the interventional temperature measuring needle obtains accurate temperature information, after the temperature information is transmitted to a multi-path temperature measuring instrument, the temperature information is subjected to high-precision acquisition and amplification, high-performance promotion and high-speed operation and processing of a central CPU (central processing unit), and then, through a display interface and a display circuit system, multiple paths of temperatures are respectively displayed on multiple paths of OLED display screens in a high-definition manner, the temperature measuring and displaying range of each path of temperature is 0-150 ℃, the resolution is 0.1 ℃, and the temperature precision can reach +/-0.5 ℃.
The utility model provides a safe, effective, accurate and reliable side-opening temperature measurement means for clinical tumor active heat ablation intervention operation.
Drawings
The present invention will be further described with reference to the accompanying drawings.
Fig. 1 is a schematic structural view of a six-probe intervention type side-opening temperature measuring device according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of an interventional temperature measuring needle.
Fig. 3 is a schematic front view of the six-way temperature measuring instrument shown in fig. 1A.
Fig. 4 is a schematic structural diagram of the six-way temperature measuring instrument shown in fig. 1B, in which the L-shaped cover plate is removed from the rear view.
FIG. 5 is a block diagram of the electrical principle of the six-way temperature gauge.
The reference numerals and schematic designations in fig. 1-4 are as follows:
1-a puncture needle head, 2-a temperature measuring needle rod, 3-a first high-insulation-strength enameled pure copper wire, 22-a second high-insulation-strength enameled pure copper wire, 4-a first high-insulation-strength enameled copper-nickel alloy wire, 23-a second high-insulation-strength enameled copper-nickel alloy wire, 5-a handle, 6-a metal short circuit sleeve, 7-a metal braided layer, 8-a connecting wire, 9-an adapter plug, 10-a case, 11-an OLED display screen, 12-a six-way display circuit board, 13-an adapter socket, 14-a power switch, 15-a network power socket, 16-a central control circuit board, 17-a fan, 18-a switching power supply, 19-a lightning protection filter, 20-a support upright post and a 21-L-shaped cover plate.
Detailed Description
Example one
As shown in fig. 1 to 4, the six-probe interventional side-opening temperature measuring device of the present embodiment mainly includes: the temperature measuring device comprises a puncture needle point 1, a temperature measuring needle rod 2, a first high-insulation-strength enameled pure copper wire 3, a second high-insulation-strength enameled pure copper wire 22, a first high-insulation-strength enameled copper-nickel alloy wire 4, a second high-insulation-strength enameled copper-nickel alloy wire 23, a handle 5, a metal short circuit sleeve 6, a metal woven mesh 7, a connecting wire 8, an adapter plug 9, a case 10, an OLED display screen 11, a six-way display circuit board 12, an adapter socket 13, a power switch 14, a network power socket 15, a central control circuit board 16, a fan 17, a switching power supply 18, a lightning protection filter 19, a support upright post 20 and an L-shaped cover plate 21.
As shown in fig. 1, the appearance part of the six-probe interventional side-opening temperature measurement device of the embodiment includes: the six-path temperature measuring instrument comprises a case 10, an OLED display screen 11, an adapter socket 13, a power switch 13, a network power socket 15, an L-shaped cover plate 21, a puncture needle point 1 of an interposed temperature measuring needle, a temperature measuring needle rod 2, a handle 5, a connecting wire 8, an adapter plug 9 and the like, and temperature information of the six-path temperature measuring instrument is transmitted to the six-path temperature measuring instrument through short-circuit plugging of the adapter plug 9 and the adapter socket 13.
As shown in fig. 2, the insertion temperature measuring needle according to this embodiment has a structure, and the assembly process is as follows:
1. the shoulder excircle at the tail part of the puncture needle head 1 is assembled in the inner hole at the front end of the temperature measuring needle rod 2 in an opposite way, and the puncture needle head and the temperature measuring needle rod are firmly welded by adopting high-temperature soldering so as to meet the use length of the clinical intervention (puncture) temperature measuring needle.
2. And fusing the foremost ends of the first high-insulation-strength enameled pure copper wire 3 and the first high-insulation-strength enameled copper nickel alloy wire 4 into a temperature measuring end of the T-shaped thermocouple by adopting a laser welding process.
3. And (3) installing and pushing the temperature measuring end of the T-shaped thermocouple to the foremost end of the inner hole of the puncture needle head 1 along the inner hole of the temperature measuring needle rod 2 by using a special tool, and filling high-grade heat-conducting glue in a gap between the temperature measuring end of the T-shaped thermocouple and the inner hole of the puncture needle head 1.
4. And respectively corresponding a second high-insulation-strength enameled pure copper wire 22 and a second high-insulation-strength enameled copper nickel alloy wire 23 at the front ends of the two wires of the connecting wire 8 to the tail end of a first high-insulation-strength enameled pure copper wire 3 and the tail end of a first high-insulation-strength enameled copper nickel alloy wire 4 of the T-shaped thermocouple temperature measuring wire (wire), and carrying out short circuit welding on the ends of the same name.
5. And the metal short-circuit sleeve 6 is sleeved at the connecting part of the tail end of the temperature measuring needle tube 2 and the front end of the metal braid 7 of the connecting wire 8 in a contraposition manner, and shielding short-circuit welding is adopted to ensure that the whole interventional temperature measuring needle has good electromagnetic compatibility.
6. And respectively carrying out short circuit welding on the tail end of a second high-insulation-strength enameled pure copper wire 22 and the tail end of a second high-insulation-strength enameled copper nickel alloy wire 23 of the double-conductor of the connecting wire 8 and two contact pins of the adapter plug 9 in a one-to-one correspondence manner, and then carrying out shielding short circuit welding on a metal braid layer 7 of the adapter plug 9 and the other contact pin of the adapter plug 9.
7. The handle 5 is oppositely sleeved on the tail part of the temperature measuring needle rod 2 and the connecting part of the temperature measuring needle rod and the connecting wire 8 and is fixedly bonded to be used as an operating handle of an operator.
And then, the assembly of the intrusive temperature measuring needle of the embodiment is finished, and then the electrical performance, the temperature measuring sensitivity, the temperature measuring precision and the like of the embodiment are checked and detected.
As shown in fig. 3 and 4, the six-circuit temperature measuring instrument according to the embodiment has the following assembly sequence and process:
1. the six adapter sockets 13 are respectively assembled and fixed in the holes below the front panel of the six-way thermometer case 10 in an alignment manner, and then the six-way display circuit board 12 is assembled and fixed in the inner side of the front panel of the six-way thermometer case 10 in an alignment manner.
2. The power switch 14, the network power socket 15 and the fan 17 are respectively installed and fixed on two inner side surfaces of the six-way temperature measuring instrument case 10 in an aligned mode.
3. The switching power supply 18, the lightning protection filter 19 and the four support columns 20 are respectively installed and fixed on the bottom plate of the six-way temperature measuring instrument case 10 in an aligned mode.
4. And mounting and fixing the central control circuit board 16 on the tops of the four supporting columns.
Note: the assembly and the installation are fixed, and the threaded nails are adopted for connection.
5. And performing logical connection, namely threaded connection, splicing or welding according to an electrical general process by using specified wires and wire bonds according to the electrical principle block diagram of the six-way temperature measuring instrument shown in the figure 5.
6. Finally, the L-shaped cover plate 21 is aligned and mounted on the chassis 10, and is fixed by screws.
So far, the assembly of the six-way temperature measuring instrument of the embodiment is finished, and then the inspection and detection are carried out:
(1) firstly, GB 9706.1-2007 part 1 of medical electrical equipment: and (4) checking and detecting the electric safety and the electric performance of related contents and technical indexes of safety general requirements.
(2) The interventional temperature measuring needle is used for detecting the temperature measurement, and the technical indexes are as follows: the six-path temperature measurement and display range is 0-150 ℃, the resolution is 0.1 ℃, and the temperature precision is +/-0.5 ℃.
The electric safety, the electric performance and the temperature inspection and detection, the phantom test inspection and detection and the clinical application prove that one to six interventional temperature measurement needles can be matched and used in the embodiment, and the requirement of clinical minimally invasive interventional therapy operation on the side-by-side temperature measurement of tumors, particularly large-volume tumors or irregular tumor edges can be fully met.
Particularly, the three technical indexes of temperature measurement and display range, resolution and temperature precision and the like can all meet or exceed the relevant requirements of the national medical instrument industry standard, such as the requirements of the relevant technical conditions of YY 0838-.
Therefore, the utility model discloses a many probes intervene formula side-opening temperature measuring device, can be applicable to the side-opening temperature measurement of clinical tumour wicresoft interventional therapy operation widely, whether as judging tumour normal position deactivation, as the safe effective reliable foundation that the thermal ablation tumour made it to solidify dead.
Besides this embodiment, other embodiments such as increasing or decreasing the number of temperature measurement ends and adjusting the compatibility of thermocouples to change the temperature measurement and display range can be implemented. All technical solutions formed by adopting equivalent replacement or equivalent transformation fall within the protection scope of the patent claims of the present invention.
Claims (17)
1. A multi-probe intervention type side-opening temperature measuring device mainly comprises: the interventional type temperature measuring needle and the connecting wire thereof, the adapter plug and the multi-channel temperature measuring instrument are hollow needle bodies which can be punctured to the edge of tumor tissue through skin, and the interventional type temperature measuring needle is characterized in that: the temperature measuring device also comprises a T-shaped thermocouple temperature measuring end, a temperature measuring lead, a puncture needle point, a connecting wire, an adapter plug and a metal short circuit sleeve which are arranged at the tail part of the hollow needle body, wherein the T-shaped thermocouple temperature measuring end, the temperature measuring lead, the puncture needle point, the connecting wire and the adapter plug are arranged in the hollow needle body; the multichannel thermoscope mainly includes: the temperature measuring device comprises a 24V direct-current low-voltage power supply, a multi-channel temperature information acquisition unit, a central operation amplification and processing unit and a multi-channel temperature display system, wherein the temperature measuring and displaying range of the temperature measuring device is 0-150 ℃, the resolution is 0.1 ℃, and the temperature precision is +/-0.5 ℃.
2. The side branch temperature measurement device according to claim 1, wherein: the puncture needle point is made of medical grade stainless steel materials, the front end of the puncture needle point is a conical needle-shaped body with enough puncture force, the excircle of the tail of the puncture needle point is a circular bead cylinder, and the inner hollow circular hole is deep to the front end of the cone.
3. The side branch temperature measurement device according to claim 1, wherein: the hollow needle body is a medical seamless thin-wall stainless steel tube, the front end of the hollow needle body is sleeved on the outer circle of the shoulder at the tail part of the puncture needle and is fixed by welding, and the temperature measuring needle body capable of puncturing the human body tissue through the skin is formed.
4. The side branch temperature measurement device according to claim 1, wherein: the temperature measuring needle body is internally provided with a T-shaped thermocouple made of a high-insulation-strength enameled pure copper wire and a high-insulation-strength enameled copper-nickel alloy wire, namely, the foremost end of the high-insulation-strength enameled pure copper wire and the high-insulation-strength enameled copper-nickel alloy wire is fused into a temperature measuring end of the T-shaped thermocouple by adopting a laser welding process.
5. The side branch temperature measurement device according to claim 1, wherein: and assembling the temperature measuring end of the T-shaped thermocouple to the foremost end of the inner hole of the puncture needle tip, and filling high-grade heat-conducting glue in a gap between the temperature measuring end of the T-shaped thermocouple and the inner hole of the puncture needle tip so as to improve the sensitivity of temperature measurement.
6. The side branch temperature measurement device according to claim 1, wherein: the connecting wire is a double-wire with a metal braided shielding layer, the front ends of the double-wire are respectively in short-circuit welding with the tail parts of the two temperature measuring conducting wire wires of the T-shaped thermocouple by using the same end, and the front end of the outer metal braided layer is in shielding short-circuit connection with the tail end of the hollow needle body through the metal short-circuit sleeve sleeved on the excircle of the two temperature measuring conducting wire wires, so that the whole inserted temperature measuring needle is ensured to have good electromagnetic compatibility.
7. The side branch temperature measurement device according to claim 1, wherein: the adapter plug is a three-core aviation plug, the tail ends of the double-conductor of the connecting wire are respectively in one-to-one correspondence with two terminals in the adapter plug for homonymy end short circuit welding, and the outer metal shielding layer of the connecting wire is in shielding type short circuit welding with the other terminal of the adapter plug.
8. The side branch temperature measurement device according to claim 1, wherein: and an operating handle is assembled and fixed at the joint of the hollow needle body and the connecting line.
9. The side branch temperature measurement device according to claim 1, wherein: the power supply adopts a 220V/50Hz network power socket for feeding, and also comprises a power switch, a lightning protection filter and a switching power supply, and then the power switch, the lightning protection filter and the switching power supply are converted into 24V direct current low-voltage power supply.
10. The side branch temperature measurement device according to claim 1, wherein: the 24V direct-current low-voltage power supply feeds power to the fan and the EMI module respectively, the EMI module converts the power into three paths to supply power in an isolated mode, one path of 24V/+/-5V isolated power supply feeds the temperature acquisition circuit, one path of 24V/5V isolated power supply feeds the CPU operation processing unit, and the other path of 24V/5V isolated power supply feeds the display system.
11. The side branch temperature measurement device according to claim 1, wherein: the multi-channel temperature acquisition system mainly comprises a switching socket, a multi-channel temperature acquisition conditioning circuit and a 12-bit high-performance analog-digital chip.
12. The side branch temperature measurement device according to claim 1, wherein: the central operation processing unit mainly comprises a signal amplifier, a 16-bit DSPIC series high-speed operation processing singlechip and an auxiliary circuit thereof.
13. The side branch temperature measurement device according to claim 1, wherein: the multi-channel temperature display system mainly comprises a display interface, a multi-channel OLED display circuit and a plurality of 1.3-inch OLED display screens, wherein power supply adopts a 220V/50Hz network power socket for feeding, and the multi-channel temperature display system also comprises a power switch, a lightning protection filter and a switch power supply, and then the power switch, the lightning protection filter and the switch power supply are converted into 24V direct current low-voltage power supply.
14. The side branch temperature measurement device according to claim 1, wherein: the 24V direct-current low-voltage power supply feeds power to the fan and the EMI module respectively, the EMI module converts the power into three paths to supply power in an isolated mode, one path of 24V/+/-5V isolated power supply feeds the temperature acquisition circuit, one path of 24V/5V isolated power supply feeds the CPU operation processing unit, and the other path of 24V/5V isolated power supply feeds the display system.
15. The side branch temperature measurement device according to claim 1, wherein: the multi-channel temperature acquisition system mainly comprises a switching socket, a multi-channel temperature acquisition conditioning circuit and a 12-bit high-performance analog-digital chip.
16. The side branch temperature measurement device according to claim 1, wherein: the central operation processing unit mainly comprises a signal amplifier, a 16-bit DSPIC series high-speed operation processing singlechip and an auxiliary circuit thereof.
17. The side branch temperature measurement device according to claim 1, wherein: the multichannel temperature display system mainly comprises a display interface, a multichannel OLED display circuit and a plurality of 1.3-inch OLED display screens.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922082885.5U CN211723136U (en) | 2019-11-27 | 2019-11-27 | Multi-probe intervention type side-opening temperature measuring device |
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| CN201922082885.5U CN211723136U (en) | 2019-11-27 | 2019-11-27 | Multi-probe intervention type side-opening temperature measuring device |
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