CN209695370U - A kind of snare with removing cutter head - Google Patents
A kind of snare with removing cutter head Download PDFInfo
- Publication number
- CN209695370U CN209695370U CN201820704695.5U CN201820704695U CN209695370U CN 209695370 U CN209695370 U CN 209695370U CN 201820704695 U CN201820704695 U CN 201820704695U CN 209695370 U CN209695370 U CN 209695370U
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- snare
- cutter head
- emission electrode
- electrode
- pipe sheath
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Abstract
The utility model discloses a kind of snares with removing cutter head, snare includes the emission electrode and loop electrode of front bar, the pipe sheath extended from front bar and the top that pipe sheath is arranged in, emission electrode and loop electrode are electrically connected to radio-frequency generator via conducting wire, wherein, emission electrode forms closed snare cutter head around objective body, the top of lasso cutter head is formed as removing cutter head, the hoe scaler capitiform becomes spherical part, and it is prominent from pipe sheath that emission electrode is configured to the spherical part when partly retracting in pipe sheath.
Description
Technical field
The utility model relates to a kind of snares with removing cutter head.
Background technique
For example, as it is known that a kind of snare, matches with endoscope, for treating alimentary canal, the urinary tract, respiratory tract etc.
Disease forms plasmasphere in the lesion (objective body) of human body using high-frequency current, to excite conductive be situated between using electric energy
Matter generates plasma, and is vaporized snare cutting to objective body based on the RF energy of plasma, in alimentary canal
Inscribe removes polyp or other extra body tissues.This can exempt traditional operation treatment risk, small, good effect, operation with wound
The features such as technical requirements are high.
The snare includes emission electrode and loop electrode, and emission electrode is telescopically disposed in the pipe sheath of snare,
Loop electrode is wound on the end of pipe sheath, wherein in the state that emission electrode is released from pipe sheath by push rod, transmitting electricity
Pole forms closed snare cutter head around objective body, to pass through the snare cutter head pair in the case where two electrodes are energized
Objective body is vaporized snare cutting.But existing snare can only be vaporized snare cutting by snare cutter head.
However, in the course of surgery, it is multiple in target shape other than needing to be vaporized objective body snare cutting
It also needs to be vaporized removing to the part of objective body in the case where miscellaneous.In this regard, existing method is and removing snare
It changes hoe scaler and is vaporized removing.Cause operating time to increase in this way and increases equipment cost.
Utility model content
The utility model made in view of problem above and the utility model provide it is a kind of with removing cutter head snare
Device, there is the snare of removing cutter head not only can be used as the snare for vaporizing snare cutting for this, but also can be used as vapour
Change the hoe scaler of removing.
The snare with removing cutter head according to the present utility model includes that front bar, the pipe sheath extended from front bar and setting exist
The emission electrode and loop electrode on the top of pipe sheath, emission electrode and loop electrode are electrically connected to radio-frequency generator via conducting wire,
Wherein, emission electrode forms closed snare cutter head around objective body, and the top of lasso cutter head is formed as removing cutter head, described
Hoe scaler capitiform becomes spherical part, and emission electrode is configured to when partly retracting in pipe sheath spherical part from pipe vaginal process
Out.
Using above-mentioned construction, used when using the snare with removing cutter head according to the present utility model as snare
When, emission electrode is released from pipe sheath, and forms closed snare cutter head, to entangle objective body, completes vaporization snare
Cutting, and when using the snare with removing cutter head according to the present utility model as hoe scaler in use, emission electrode part
Ground retracts in pipe sheath, and the spherical part on its top is prominent from pipe sheath, as removing cutter head, to be vaporized to objective body
Removing.Therefore, when being vaporized snare cutting and vaporization removing under same operation, same set of equipment can be used, without
Need replacing equipment.Therefore, operating time can be saved and reduce equipment cost.
Preferably, the snare with removing cutter head according to the present utility model, spherical part can be by making snare knife
The top of head is melted and molded and is formed.
Therefore, by being melted and molded, spherical part easily can be formed on the top of snare cutter head.
Preferably, the snare with removing cutter head according to the present utility model, radio-frequency generator generate the first input electricity
Pole, and loop electrode and emission electrode import objective body by pipe sheath and form galvanic circle in objective body；Wherein, emit
Electrode receives the first input voltage caused by radio-frequency generator, to apply the first electricity between emission electrode and loop electrode
Pressure, so that the liquid for being directed into objective body reaches the first temperature and liquid is promoted to be converted into plasmasphere, to utilize electricity
Liquid can be excited to generate plasma, and snare cutting is vaporized to objective body based on the RF energy of plasma.
Preferably, the snare with removing cutter head according to the present utility model, radio-frequency generator further generate second
Input voltage；And emission electrode receives the second input voltage caused by radio-frequency generator, thus in emission electrode and circuit
Apply second voltage between electrode, so that objective body remains second temperature.
Preferably, the snare with removing cutter head according to the present utility model, the range of first voltage be 100Vrms extremely
300Vrms, and the range of second voltage is 60Vrms to 80Vrms.
Preferably, the snare with removing cutter head according to the present utility model, the range of the first temperature are 35 DEG C -40
DEG C, the range of second temperature is 40 DEG C -70 DEG C.
Preferably, the snare with removing cutter head according to the present utility model, loop electrode are wrapped on pipe sheath.
Preferably, the snare with removing cutter head according to the present utility model, snare includes injecting cavity interface, injection
Chamber interface inputs instruction input liquid based on the liquid of controller.
Preferably, the snare with removing cutter head according to the present utility model, liquid is conducting medium.
According to following description with reference to the accompanying drawings, the above-mentioned and other purposes, feature and advantage of the utility model will become more
Add obvious.
Detailed description of the invention
By reference to the following drawings, the illustrative embodiments of the utility model can be more fully understood by:
Fig. 1 is according to the side view of the snare of the utility model, and wherein emission electrode is by prominent from pipe sheath；
Fig. 2 is the enlarged view of the part B in Fig. 1；
Fig. 3 is according to the side view of the snare of the utility model, and wherein emission electrode partly retracts in pipe sheath；
Fig. 4 is the cross-sectional view along the line I-I interception in Fig. 1.
Specific embodiment
The embodiments of the present invention is illustrated by particular specific embodiment below, those skilled in the art can be by this theory
The bright revealed content of book understands other advantages and effect of the utility model easily.
The illustrative embodiments of the utility model are introduced referring now to the drawings, however, the utility model can use many
Different forms is implemented, and is not limited to the embodiment described herein, and to provide these embodiments be in order at large and complete
Open the utility model entirely, and the scope of the utility model is sufficiently conveyed to person of ordinary skill in the field.For
The term in illustrative embodiments being illustrated in the accompanying drawings not is the restriction to the utility model.In the accompanying drawings, identical
Cells/elements use identical appended drawing reference.
Unless otherwise indicated, term (including scientific and technical terminology) used herein has person of ordinary skill in the field
It is common to understand meaning.Further it will be understood that with the term that usually used dictionary limits, should be understood as and its
The context of related fields has consistent meaning, and is not construed as Utopian or too formal meaning.
Fig. 1 is the side view according to the snare of the utility model.Snare in the utility model can be used in digesting
Snare cutting, ablation and the solidification and hemostasis of such as polyp or outstanding tumor locus inside road.In addition, snare is also
It can be used in snare cutting, ablation, solidification and the hemostasis of soft tissue in the surgical operations such as joint, backbone, skin, ear nose larynx.This
The snare of application is to belong to brought into temporary contact within 24 hours, according to time of contact classification, according to contact human body using the time
Qualitative classification belongs to external access instrument (with tissue/bone/dentine) and belongs to according to the classification of medical instrument structure feature active
Medical instrument.
Snare uses bipolar scheme, and its working frequency is 105kHz.Optionally, the working frequency of the snare can
In the range of 100-110.When work, snare for example, by physiological saline as conducting medium, activate emission electrode and
A thin layer is formed when between loop electrode (will be described below).When snare gives enough energy (voltage), physiology
Salt water translates into the gas blanket being made of charged particle of energizing (plasmasphere).That is, snare is led using energy excitation
Dielectric (for example, physiological saline) generates plasma, and interrupts tissue element key by the energy of plasma.Plasma
The energy of body is by protein and other Direct Pyrolysis at O2, CO2, N2Equal gases, to complete the vaporization snare to tissue
Cutting.When the work cutter head to snare gives low-voltage, electric field is required and is generated lower than the thresholding for generating plasmasphere
Tissue resistance heat, so that tissue is carried out ablation solidification and hemostasis.
The operation part of snare (low-temperature plasma snare knife surgical apparatus) include handle 1, pull rod 2, socket Pin 3,
Sliding block 4, cushion block 5, front bar 6 (also referred to as rod cap), pipe sheath 7 and injecting cavity interface 8 etc..It is convenient that pull rod 2 is held by operator
Operate the snare.Pipe sheath 7 is the elongated tubular longitudinally extended from front bar 16, and pipe sheath 7 will be inserted into the objective body (disease of human body
Stove).
Pipe sheath 7 is for providing external sheath function.Injecting cavity interface 8 is inputted based on the liquid from controller (not shown)
Instruction input liquid (such as conducting medium), wherein the current surplus of the liquid is by real-time measurement and the current surplus quilt
It is transmitted to controller, controller determines whether to generate the liquid input instruction and generate determining based on the current surplus
Control liquid is from the fluid entry port being formed in the injecting cavity interface 8 through the formation of pipe sheath after the liquid input instruction
Fluid-through chamber 18 (referring to fig. 4) in 7 and finally to the input of objective body.
In addition, as shown in Figs. 1-2, the operation part of snare further includes the emission electrode 21 that the top of pipe sheath 7 is arranged in
With loop electrode 22.Emission electrode 21 is telescopically disposed in pipe sheath 7 by sliding block 4.Further, emission electrode 21 is in mesh
Closed snare cutter head is formed around standard type.In the present embodiment, the top of lasso cutter head is formed as removing cutter head, the removing
Cutter head is formed as spherical part 21A, and when emission electrode 21 retracts in pipe sheath 7, spherical part 21A is prominent from pipe sheath 7.The ball
Shape part 21A can be by forming the top of snare cutter head and melt-forming.The melt-forming refers to making by high temperature etc.
It melts and to melt using the mold with spherical cavity corresponding with the shape of spherical part in the top for obtaining snare cutter head
Snare cutter head top sizing a kind of process.
More specifically, in the initial state, emission electrode 21 is completely retracting in pipe sheath 7, with facilitate the front end of pipe sheath 7 into
Enter human body.After reaching designated position, need to be vaporized snare cutting when, by push rod (not shown) by emission electrode 21 from
Pipe sheath 7 is released, to form closed snare cutter head around objective body, to entangle objective body, is vaporized snare cutting, such as
Shown in Fig. 1.When needing to be vaporized removing, operation sliding block 4 is retracted to emission electrode 21 partly in pipe sheath 7, and sends out
The spherical part 21A on the top of radio pole 21 is prominent as removing cutter head from pipe sheath 7, to be vaporized removing, as shown in Figure 3.
Therefore, same operation under should be vaporized snare cutting be vaporized removing again when, same set of equipment can be used,
Without more exchange device.Therefore, operating time can be saved and reduce equipment cost.
Emission electrode 21 and loop electrode 22 are imported into objective body by pipe sheath 7 and form galvanic circle in objective body.
Emission electrode 21 receives the height via the socket Pin 3 connecting by high frequency connecting line with radio-frequency generator (not shown) and takes place frequently
First input voltage caused by raw device, to apply first voltage between emission electrode 21 and loop electrode 22, so that described
Conducting medium reaches the first temperature and the conducting medium is promoted to be converted into plasmasphere, to be excited using electric energy conductive
Medium generates plasma, and is vaporized snare cutting to objective body based on the RF energy of plasma.Further, it sends out
Radio pole 21 receives the second input voltage caused by the radio-frequency generator via socket Pin 3 and inputs described second
Voltage transmission applies second voltage between emission electrode 21 and loop electrode 22 to emission electrode 21, so that objective body is protected
It holds as second temperature, so that objective body be promoted to carry out ablation solidification.
For example, the range of first temperature is 35 DEG C -40 DEG C, the range of the second temperature is 40 DEG C -70 DEG C.It is described
The range of first voltage is 100Vrms to 300Vrms, and the range of the second voltage is 60Vrms to 80Vrms.
The length of loop electrode 22 can be any reasonable numerical value, such as 4 to 5 millimeters.Wherein, loop electrode 22 leans on
The one end at nearly 7 top of pipe sheath can be any reasonable numerical value, such as 2 to 3 millimeters at a distance from the top end face of pipe sheath 7.Wherein,
The top of pipe sheath 7 is arranged in water outlet 23 (or referred to as infusion port), enters from the fluid entry port in the injecting cavity interface 8
Liquid from water outlet 23 enter objective body.
Wherein, for example, the material of emission electrode 21 is stainless steel 304, the material of loop electrode 22 is stainless steel 304, pipe
The material of sheath 7 is polytetrafluoroethylene PTFE, and the material of injecting cavity interface 8 is acrylonitrile-butadiene-styrene copolymer ABS,
The material of front bar 6 is ABS, and the material of cushion block 5 is ABS, and the material of sliding block 4 is ABS, and the material of socket Pin 3 is stainless steel 304
And the material of handle 1 is ABS.
As shown in figure 4, illustrating emission electrode conducting wire 16, loop electrode conducting wire 17, fluid-through chamber 18 and emission electrode chamber
19.In more detail, the enlarged view in Fig. 4 shows the sectional view of emission electrode conducting wire 16, including insulating layer 16a
With wire 16b.Emission electrode conducting wire 16 needs insulating layer, acts as insulation and heat-insulated effect, and loop electrode conducting wire 17 can be with
It is not provided with insulating layer.Emission electrode conducting wire 16 and loop electrode conducting wire 17 are connected with emission electrode 21 and loop electrode 22 respectively
It connects.Further, emission electrode conducting wire 16 and loop electrode conducting wire 17 are connected to radio-frequency generator (not shown).
Although 16 surrounding of emission electrode conducting wire as described above forms fluid-through chamber, those skilled in the art is according to need
It wants, loop electrode chamber 19 can also be regard as fluid-through chamber, when loop electrode chamber 19 is as fluid-through chamber, loop electrode conducting wire 17
Insulating layer need to be set.
The utility model is described by reference to a small amount of embodiment.However, it is known in those skilled in the art,
As defined by subsidiary Patent right requirement, in addition to the utility model other embodiments disclosed above are equally fallen in
In the scope of the utility model.
Normally, all terms used in the claims are all solved according to them in the common meaning of technical field
It releases, unless in addition clearly being defined wherein.All references " one/described/be somebody's turn to do [device, component etc.] " are all opened ground
At least one example being construed in described device, component etc., unless otherwise expressly specified.Any method disclosed herein
Step need not all be run with disclosed accurate sequence, unless explicitly stated otherwise.
Claims (9)
1. a kind of snare with removing cutter head, the snare includes front bar, the pipe sheath extended from the front bar and setting
Emission electrode and loop electrode on the top of the pipe sheath, the emission electrode and the loop electrode are electrically connected via conducting wire
To radio-frequency generator, it is characterised in that:
The emission electrode forms closed snare cutter head around objective body, and the top of lasso cutter head is formed as removing cutter head,
The hoe scaler capitiform becomes spherical part, and the emission electrode is configured to the ball when partly retracting in the pipe sheath
Shape part is prominent from the pipe sheath.
2. the snare with removing cutter head as described in claim 1, which is characterized in that the spherical part is described by making
The top of snare cutter head is melted and molded and is formed.
3. the snare with removing cutter head as described in claim 1, which is characterized in that
The radio-frequency generator generates the first input voltage；And
The loop electrode imports the objective body by the pipe sheath with the emission electrode and is formed in the objective body
Galvanic circle；
Wherein, the emission electrode receives the first input voltage caused by the radio-frequency generator, thus in the transmitting electricity
Apply first voltage between pole and the loop electrode, so that the liquid for being directed into the objective body reaches the first temperature and promotees
So that the liquid is converted into plasmasphere, to excite the liquid to generate plasma using electric energy, and based on etc. from
The RF energy of daughter is vaporized snare cutting to the objective body.
4. the snare with removing cutter head as claimed in claim 3, which is characterized in that
The radio-frequency generator further generates the second input voltage；And
The emission electrode receives second input voltage caused by the radio-frequency generator, thus in the emission electrode
Apply second voltage between the loop electrode, so that the objective body remains second temperature.
5. the snare with removing cutter head as claimed in claim 4, which is characterized in that the range of the first voltage is
100Vrms to 300Vrms, and the range of the second voltage is 60Vrms to 80Vrms.
6. the snare with removing cutter head as claimed in claim 4, which is characterized in that the range of first temperature is 35
DEG C -40 DEG C, the range of the second temperature is 40 DEG C -70 DEG C.
7. the snare with removing cutter head as claimed in claim 4, which is characterized in that the loop electrode is wrapped in described
On pipe sheath.
8. the snare with removing cutter head as described in claim 1, which is characterized in that the snare includes that injecting cavity connects
Mouthful, the injecting cavity interface inputs instruction input liquid based on the liquid of controller.
9. the snare with removing cutter head as claimed in claim 8, which is characterized in that the liquid is conducting medium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820704695.5U CN209695370U (en) | 2018-05-13 | 2018-05-13 | A kind of snare with removing cutter head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820704695.5U CN209695370U (en) | 2018-05-13 | 2018-05-13 | A kind of snare with removing cutter head |
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| Publication Number | Publication Date |
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| CN209695370U true CN209695370U (en) | 2019-11-29 |
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| CN201820704695.5U Active CN209695370U (en) | 2018-05-13 | 2018-05-13 | A kind of snare with removing cutter head |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021217339A1 (en) * | 2020-04-27 | 2021-11-04 | 柯惠有限合伙公司 | Monopolar surgical apparatus |
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2018
- 2018-05-13 CN CN201820704695.5U patent/CN209695370U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021217339A1 (en) * | 2020-04-27 | 2021-11-04 | 柯惠有限合伙公司 | Monopolar surgical apparatus |
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