CN218870456U - Plasma jet cutter head - Google Patents
Plasma jet cutter head Download PDFInfo
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- CN218870456U CN218870456U CN202222397047.9U CN202222397047U CN218870456U CN 218870456 U CN218870456 U CN 218870456U CN 202222397047 U CN202222397047 U CN 202222397047U CN 218870456 U CN218870456 U CN 218870456U
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Abstract
The utility model discloses a plasma jet cutter head, which belongs to the field of medical appliances and comprises a handle and a cutter head component; the cutter head component comprises an insulating outer wall, an insulating medium pipe is arranged in the insulating outer wall, an annular high-voltage electrode and an annular ground electrode are sleeved on the outer wall of the insulating medium pipe in the insulating outer wall, and the annular ground electrode is positioned in front of the annular high-voltage electrode; the outer side of the insulating outer wall is provided with a suction channel; the handle is provided with a power cable, an air inlet pipe and a suction pipe, a high-voltage lead and a ground lead of the power cable are respectively connected with the annular high-voltage electrode and the annular ground electrode, the air inlet pipe is connected with the plasma channel, and the suction pipe is connected with the suction channel. The utility model discloses the plasma jet tool bit of integration need not interim equipment, and is operated more portably, and the front end of tool bit subassembly can deepen smoothly and reach focus position operation, and suitable clinical use attracts the passageway and attracts the waste gas that the pipe can easily discharge the operation in-process.
Description
Technical Field
The utility model relates to the field of medical appliances, in particular to a plasma jet cutter head.
Background
The treatment of the tumor mainly depends on surgical resection, but is influenced by various factors, and the operation has certain difficulty, particularly the intracranial malignant tumor which is lethal and has high disability rate is not clearly separated from normal brain tissue, the operation is difficult to completely resect, the tumor recurrence rate is high, and the prognosis of a patient is poor, so that multiple operations or chemotherapy and radiotherapy which are assisted are needed. Chemotherapy has received attention as a comprehensive/palliative treatment, but because of the blood brain barrier, the treatment effect of chemotherapy for intracranial malignant tumors is not ideal, and because of the lack of specificity of traditional cytotoxic chemotherapy drugs, it has common or even serious toxicity to normal tissues and organs while achieving curative effect. Radiotherapy is an important auxiliary treatment means for intracranial tumors, but the side effects of radiotherapy are not negligible at the same time, radioactive brain injury is one of serious complications after radiotherapy, cerebral edema of different degrees can occur, and radioactive brain necrosis and even brain softening are generated in severe cases.
Because of the particularity of brain tissue, when intracranial tumors invade brain tissue, nerves and blood vessels, in order to protect nerve functions, the tumors are difficult to be thoroughly eliminated by operation, and part of tumor cells are remained outside the incisal margin of the operation. Therefore, after the operation of removing the tumor, certain adjuvant therapy measures are taken to induce the apoptosis of the residual tumor cells and inhibit the proliferation and migration of the residual tumor cells, which is very important for improving the effect of the operation therapy of the intracranial tumor.
Cold plasma is a charged particle cluster generated by ionizing a working gas under an atmospheric pressure by applying a high voltage, and is generally composed of components such as ions, electrons, free radicals, and various active particles. The application of cold plasma in the biomedical field is receiving more and more attention, and many researches prove that the cold plasma can effectively inactivate pathogenic microorganisms such as various bacteria, fungi, viruses and the like, and has achieved very good research results in the aspects of dental treatment, cosmetology, hemostasis and anti-inflammation, wound healing, dermatosis treatment and tumor treatment. The cold plasma technology can be used as an auxiliary operation, and particularly has remarkable advantages in tumor treatment. The plasma is ejected along with the airflow, so the plasma is called as plasma jet, is close to the room temperature, can effectively inhibit the proliferation and migration capability of tumor cells, induces the apoptosis of the tumor cells, and does not damage normal tissues.
However, at present, a simple discharge device is mainly adopted to form plasma jet, temporary assembly is needed in work, the operation is complex, only surface operation can be performed, operation cannot go deep into a focus part, and the plasma jet is not suitable for clinical use.
SUMMERY OF THE UTILITY MODEL
The utility model provides a plasma jet tool bit, the plasma jet tool bit of integration can directly use, need not interim equipment, and is easy and simple to handle, and the front end of tool bit subassembly can go deep smoothly and reach the operation of focus position, suitable clinical use attracts the passageway and attracts the waste gas that the pipe can easily discharge the operation in-process.
The utility model provides a technical scheme as follows:
a plasma jet cutter head comprises a handle and a cutter head component which are sequentially connected from back to front;
the cutter head component comprises a tubular insulating outer wall, an insulating medium pipe is arranged in the insulating outer wall, a plasma channel penetrating through the front end and the rear end of the insulating medium pipe is arranged in the insulating medium pipe, and the front end of the insulating medium pipe extends out of the front end of the insulating outer wall by a first distance; an annular high-voltage electrode and an annular ground electrode are sleeved on the outer wall of the insulating medium pipe in the insulating outer wall, the annular ground electrode is positioned in front of the annular high-voltage electrode, and the front end of the annular high-voltage electrode and the rear end of the annular ground electrode are separated by a second distance; a suction channel is arranged on the outer side of the insulating outer wall;
the handle is provided with a power cable, an air inlet pipe and a suction pipe, a high-voltage lead and a ground lead of the power cable are respectively connected with the annular high-voltage electrode and the annular ground electrode, the air inlet pipe is connected with a plasma channel of the insulating medium pipe, and the suction pipe is connected with the suction channel.
Furthermore, the insulating outer wall comprises a first insulating pipe and a second insulating pipe, the insulating medium pipe is positioned inside the first insulating pipe, and the front end of the insulating medium pipe extends out of the front end of the first insulating pipe by a third distance; the annular ground electrode is positioned on the insulating medium pipe in front of the first insulating pipe; a circle of insulating filling structures are arranged on the periphery of the front end of the insulating medium pipe and the periphery of the front end of the annular ground electrode, and the front end of the cutter head component is of a conical structure due to the insulating filling structures; the second insulating tube is coated on the outer sides of the first insulating tube and the insulating filling structure, and the front end of the insulating medium tube extends out of the front end of the second insulating tube by a first distance.
Furthermore, the second insulating tube is a heat-shrinkable tube, and the second insulating tube is wrapped outside the first insulating tube and the insulating filling structure in a heat-shrinkable manner.
Further, a handle cavity is formed in the handle, and the rear end of the cutter head assembly is inserted into the front end of the handle cavity from the front end of the handle.
Furthermore, the power cable is connected to the rear end of the handle, the power cable enters the handle cavity from the rear end of the handle and penetrates forward to the front end of the handle cavity, a high-voltage conducting wire of the power cable penetrates through a space between the insulating medium tube and the first insulating tube and is connected with the annular high-voltage electrode, and a ground conducting wire of the power cable penetrates through a gap between the first insulating tube and the second insulating tube and is connected with the annular ground electrode.
Furthermore, the air inlet pipe is connected to the rear end of the handle, the air inlet pipe enters the handle cavity from the rear end of the handle and penetrates forwards to the front end of the handle cavity, and the front end of the air inlet pipe is connected with the rear end of the plasma channel of the insulating medium pipe through an air inlet channel.
Furthermore, the suction tube is connected to the rear end of the handle, the suction tube enters the handle cavity from the rear end of the handle and penetrates forwards to the front end of the handle cavity, and the front end of the suction tube is connected with the rear end of the suction channel.
Furthermore, the space between the first insulating tube, the second insulating tube and the insulating filling structure and between the insulating medium tube and the air inlet channel is filled with sealant.
Further, the annular high-voltage electrode and the annular ground electrode are made of solid metal, the insulating medium pipe is made of ceramic or glass, the first insulating pipe and the insulating filling structure are made of ceramic, the second insulating pipe is made of a heat-shrinkable material, the suction channel and the air inlet channel are made of high-molecular materials, and the sealant is made of epoxy resin structural adhesive.
Furthermore, a second distance between the front end of the annular high-voltage electrode and the rear end of the annular ground electrode is 0.5-1.5cm, and a distance between the front end of the annular ground electrode and the front end of the insulating medium tube is 0.5-1.5cm.
The utility model discloses following beneficial effect has:
the utility model designs the integrated plasma jet cutter head, which can be directly used during operation without temporary assembly, and the operation is more simple; the annular high-voltage electrode and the annular ground electrode generate plasma, the air inlet pipe and the insulating medium pipe convey the plasma to the front end of the cutter head component, and the front end of the cutter head component can smoothly and deeply reach a focus position for operation, so that the plasma cutting machine is suitable for clinical use; the suction channel and the suction tube can easily discharge waste gas in the operation process.
Drawings
Fig. 1 is a schematic view of the overall structure of the plasma jet cutter head of the present invention;
fig. 2 is the internal structure diagram of the plasma jet cutter head of the present invention.
Detailed Description
To make the technical problems, technical solutions and advantages of the present invention clearer, the following description is made in conjunction with the accompanying drawings and specific embodiments.
The utility model provides a plasma jet tool bit, as shown in figure 1-2, include handle 1 and tool bit subassembly 2 that connect gradually after from the back to the front.
An annular high-voltage electrode 6 and an annular ground electrode 7 are sleeved on the outer wall of the insulating medium tube 4 in the insulating outer wall 3, the annular ground electrode 7 is positioned in front of the annular high-voltage electrode 6, and the front end of the annular high-voltage electrode 6 and the rear end of the annular ground electrode 7 are separated by a second distance; the outer side of the insulating outer wall 3 is provided with a suction channel 8, the front end of the suction channel 8 is a certain distance behind the front end of the insulating medium pipe 4, and the suction channel 8 is communicated with the front and the back.
The handle 1 is provided with a power cable 9, an air inlet pipe 10 and a suction pipe 11, a high-voltage lead 12 and a ground lead 13 of the power cable 9 are respectively connected with an annular high-voltage electrode 6 and an annular ground electrode 7, the air inlet pipe 10 is connected with a plasma channel 5 of the insulating medium pipe 4, and the suction pipe 11 is connected with the suction channel 6.
The utility model discloses a plasma efflux tool bit uses with the cooperation of operation system, before the use, and power cable 9 connects the power, and intake pipe 10 connects inert gas and provides the device, attracts pipe 11 to connect the negative pressure suction system. When the plasma tube is used, the power supply is turned on, the output power and the gas flow are adjusted, the inert gas is introduced into the gas inlet tube 10, the gas flow control valve is opened, and the inert gas enters the plasma channel 5 of the insulating medium tube 4 through the gas inlet tube 10. A foot switch connected to a surgical system is started, high voltage is applied to an annular high-voltage electrode 6, inert gas is excited in a plasma channel 5 in an insulating medium tube 4 between the annular high-voltage electrode 6 and an annular ground electrode 7 to generate plasma, the insulating medium tube 4 is used for blocking an electrode electric field, and the adopted discharge mode is ring-ring (namely, the annular high-voltage electrode-the annular ground electrode) medium blocking discharge.
With the delivery of the gas in the plasma channel 5, the plasma is ejected from the front end of the insulating medium tube 4 to form plasma jet, so that the spatial separation of a discharge area and a working area between electrodes is realized, and the plasma jet directly delivers active substances and charged ions to the residual tumor surface of a target area to achieve the treatment effect.
The utility model designs an integrated plasma jet cutter head, which can be directly used during operation without temporary assembly, and the operation is simpler and more convenient; the annular high-voltage electrode and the annular ground electrode generate plasma, the air inlet pipe and the insulating medium pipe convey the plasma to the front end of the cutter head component, and the front end of the cutter head component can smoothly and deeply reach a focus position for operation, so that the plasma cutting machine is suitable for clinical use; the suction channel and the suction tube can easily discharge waste gas in the operation process.
Although some theories about cold plasma technology are developed at present, no report about the application of cold plasma in basicranial tumors such as pituitary tumor exists, because of the particularity of basicranial anatomy, the basicranial tumors often pass through important blood vessels and nerves of the basicranial nerve, invade and surround important structures of the basicranial nerve, the tumor is difficult to completely cut, and the residual tumor is easy to relapse. And the utility model discloses a plasma jet tool bit can not harm normal tissue when can be through the induced apoptosis of remaining tumor cell and bacterium of cold plasma efflux, consequently uses the utility model discloses a supplementary low temperature plasma of plasma jet tool bit cuts and melts the operation, after the excision tumour, handles the tumour that probably remains in skull base important blood vessel, neural surface with the plasma jet tool bit, when improving tumour excision efficiency, effectively reduces tumour relapse and postoperative infection.
As an improvement of the utility model, insulating outer wall 3 includes first insulating tube 14 and second insulating tube 15, and insulating medium pipe 4 is located inside first insulating tube 14, and the front end of insulating medium pipe 4 stretches out first insulating tube 14 front end third distance, and annular ground electrode 7 is located insulating medium pipe 4 in first insulating tube 14 the place ahead.
A circle of insulation filling structures 16 are arranged on the periphery of the front end of the insulation medium pipe 4 and the periphery of the front end of the annular ground electrode 7, and the insulation filling structures 16 enable the front end of the cutter head component 2 to be in a conical structure.
The second insulating tube 15 covers the outer side of the first insulating tube 14 and the insulating filling structure 16, and the front end of the insulating medium tube 4 extends out of the front end of the second insulating tube 15 by a first distance.
Preferably, the second insulating tube 15 is a heat shrinkable tube, and the second insulating tube 15 is heat shrunk to cover the outside of the first insulating tube 14 and the insulating filling structure 16. When the second insulating tube 15 is arranged, the second insulating tube 15 is sleeved outside the first insulating tube 14 and the insulating filling structure 16, then the second insulating tube 15 is heated, the second insulating tube 15 contracts irreversibly due to the property of the heat shrinkable tube, the first insulating tube 14 and the insulating filling structure 16 are tightly coated, and after the second insulating tube 15 is cooled, the second insulating tube cannot recover reversibly, but keeps a contraction state.
As another improvement of the utility model, a handle cavity 17 is arranged in the handle 1, and the rear end of the cutter head component 2 is inserted into the front end of the handle cavity 17 from the front end of the handle 1.
The power cable 9 is connected to the rear end of the handle 1, the power cable 9 enters the handle cavity 17 from the rear end of the handle 1 and penetrates forward to the front end of the handle cavity 17, the high-voltage lead 12 of the power cable 9 penetrates in the space between the insulating medium pipe 4 and the first insulating pipe 14 and is connected with the annular high-voltage electrode 6, and the ground lead 13 of the power cable 9 penetrates through the gap between the first insulating pipe 14 and the second insulating pipe 15 and is connected with the annular ground electrode 7.
The air inlet pipe 10 is connected to the rear end of the handle 1, the air inlet pipe 10 enters the handle cavity 17 from the rear end of the handle 1 and forwards penetrates through the front end of the handle cavity 17, and the front end of the air inlet pipe 10 is connected with the rear end of the plasma channel 5 of the insulating medium pipe 4 through the air inlet channel 18.
The suction tube 11 is connected with the rear end of the handle 1, the suction tube 11 enters the handle cavity 17 from the rear end of the handle 1 and forwards penetrates the front end of the handle cavity 17, and the front end of the suction tube 11 is connected with the rear end of the suction channel 6.
In order to fix the insulating medium pipe and seal, the space between the first insulating pipe 14, the second insulating pipe 15 and the insulating filling structure 16 and the insulating medium pipe 4 and the air inlet channel 18 is filled with a sealant 19.
The annular high-voltage electrode 6 and the annular ground electrode 7 are made of solid metal, including but not limited to aluminum, copper, stainless steel, tungsten, and alloys thereof. The insulating medium pipe is made of ceramic or glass and the like. The first insulating tube and the insulating filling structure are made of ceramics, including but not limited to alumina ceramics, zirconia ceramics, etc. The second insulating tube is made of a heat-shrinkable material, including but not limited to polyvinylidene fluoride, PET or PVC. The material of the suction channel and the air inlet channel is a high polymer material, including but not limited to PEEK, PI, PVC, etc. The sealant is made of epoxy resin structural adhesive.
Preferably, the second distance between the front end of the annular high-voltage electrode 6 and the rear end of the annular ground electrode 7 is 0.5-1.5cm, and the distance between the front end of the annular ground electrode and the front end of the insulating medium tube is 0.5-1.5cm.
The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and embellishments can be made without departing from the principle of the present invention, and these improvements and embellishments should also be regarded as the protection scope of the present invention.
Claims (10)
1. A plasma jet cutter head is characterized by comprising a handle and a cutter head component which are sequentially connected from back to front;
the cutter head component comprises a tubular insulating outer wall, an insulating medium pipe is arranged in the insulating outer wall, a plasma channel penetrating through the front end and the rear end of the insulating medium pipe is arranged in the insulating medium pipe, and the front end of the insulating medium pipe extends out of the front end of the insulating outer wall by a first distance; an annular high-voltage electrode and an annular ground electrode are sleeved on the outer wall of the insulating medium pipe in the insulating outer wall, the annular ground electrode is positioned in front of the annular high-voltage electrode, and the front end of the annular high-voltage electrode and the rear end of the annular ground electrode are separated by a second distance; a suction channel is arranged on the outer side of the insulating outer wall;
the handle is provided with a power cable, an air inlet pipe and a suction pipe, a high-voltage lead and a ground lead of the power cable are respectively connected with the annular high-voltage electrode and the annular ground electrode, the air inlet pipe is connected with a plasma channel of the insulating medium pipe, and the suction pipe is connected with the suction channel.
2. The plasma jet cutter head as claimed in claim 1, wherein the insulating outer wall comprises a first insulating tube and a second insulating tube, the insulating medium tube is located inside the first insulating tube, the front end of the insulating medium tube extends out of the front end of the first insulating tube by a third distance, and the annular ground electrode is located on the insulating medium tube in front of the first insulating tube; a circle of insulating filling structures are arranged on the periphery of the front end of the insulating medium pipe and the periphery of the front end of the annular ground electrode, and the front end of the cutter head component is of a conical structure due to the insulating filling structures; the second insulating tube is coated on the outer sides of the first insulating tube and the insulating filling structure, and the front end of the insulating medium tube extends out of the front end of the second insulating tube by a first distance.
3. The plasma jet cutter head of claim 2, wherein the second insulating tube is a heat shrink tube, and the second insulating tube is heat shrink wrapped around the first insulating tube and the outside of the insulating filling structure.
4. The plasma jet cutter head of claim 3 wherein a handle cavity is provided in said handle, and wherein said rear end of said cutter head assembly is inserted into said handle cavity front end from said handle front end.
5. The plasma jet cutter head as claimed in claim 4, wherein the power cable is connected to the rear end of the handle, the power cable enters the handle cavity from the rear end of the handle and passes forward to the front end of the handle cavity, the high voltage conductor of the power cable passes through the space between the insulating medium tube and the first insulating tube and is connected to the annular high voltage electrode, and the ground conductor of the power cable passes through the gap between the first insulating tube and the second insulating tube and is connected to the annular ground electrode.
6. The plasma jet cutter head as claimed in claim 5, wherein the air inlet pipe is connected to the rear end of the handle, the air inlet pipe enters the handle cavity from the rear end of the handle and penetrates forward to the front end of the handle cavity, and the front end of the air inlet pipe is connected with the rear end of the plasma channel of the insulating medium pipe through an air inlet channel.
7. The plasma jet cutter head of claim 6, wherein the suction tube is connected to the rear end of the handle, the suction tube extends into the handle cavity from the rear end of the handle and passes forward to the front end of the handle cavity, and the front end of the suction tube is connected to the rear end of the suction channel.
8. The plasma jet cutter head as claimed in claim 6, wherein the space between the first insulating tube, the second insulating tube and the insulating filling structure and the insulating medium tube and the air inlet passage is filled with sealant.
9. The plasma jet cutter head as claimed in claim 8, wherein the annular high voltage electrode and the annular ground electrode are made of solid metal, the insulating medium pipe is made of ceramic or glass, the first insulating pipe and the insulating filling structure are made of ceramic, the second insulating pipe is made of heat-shrinkable material, the suction channel and the air inlet channel are made of polymer material, and the sealant is made of epoxy resin structural adhesive.
10. The plasma jet cutter head as claimed in any one of claims 1 to 9, wherein the second distance between the front end of the annular high voltage electrode and the rear end of the annular ground electrode is 0.5 to 1.5cm, and the distance between the front end of the annular ground electrode and the front end of the insulating medium pipe is 0.5 to 1.5cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222397047.9U CN218870456U (en) | 2022-09-07 | 2022-09-07 | Plasma jet cutter head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222397047.9U CN218870456U (en) | 2022-09-07 | 2022-09-07 | Plasma jet cutter head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218870456U true CN218870456U (en) | 2023-04-18 |
Family
ID=85953887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222397047.9U Active CN218870456U (en) | 2022-09-07 | 2022-09-07 | Plasma jet cutter head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218870456U (en) |
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2022
- 2022-09-07 CN CN202222397047.9U patent/CN218870456U/en active Active
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