CN209018931U - A kind of snare with V-shaped part - Google Patents
A kind of snare with V-shaped part Download PDFInfo
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- CN209018931U CN209018931U CN201820704716.3U CN201820704716U CN209018931U CN 209018931 U CN209018931 U CN 209018931U CN 201820704716 U CN201820704716 U CN 201820704716U CN 209018931 U CN209018931 U CN 209018931U
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- snare
- shaped part
- electrode
- emission electrode
- objective body
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Abstract
The utility model discloses a kind of snares with V-shaped part, 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 end of snare cutter head is formed towards the V-shaped part of snare cutter head inner opening, and the top of the V-shaped part is formed as spherical.
Description
Technical field
The utility model relates to a kind of snares with V-shaped part.
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.Traditional operation treatment risk can be exempted, there is small wound, good effect, operation skill
Art requires the features such as high.Snare is a kind of electrosurgical unit for replacing mechanical operation knife to carry out tissue snare cutting.Snare
It is clinically substantially shorter operating time compared with traditional mechanical operation knife, reduces patient's blood loss and transfusion volume, reduces
Complication and surgery cost.
Snare includes emission electrode and loop electrode, and emission electrode is telescopically disposed in the pipe sheath of snare, is returned
Path electrode is wound on the end of pipe sheath, wherein in the state that emission electrode is released from pipe sheath by push rod, emission electrode
Closed snare cutter head is formed around objective body, thus in the case where two electrodes are energized by the snare cutter head to mesh
Standard type is vaporized snare cutting.But in fact, objective body is likely to form different shapes, and work as the shape and snare
Snare cutter head shape not to it is corresponding when snare cutter head may not be able to entangle the objective body, cause snare to fail.Allow to cover
The firmly objective body, doctor is also required to constantly operate snare, to increase the workload of doctor, extends operating time.
Utility model content
The utility model is made in view of problem above and the utility model provides a kind of snare with V-shaped part
Device can entangle objective body reliably to be vaporized snare cutting, and thus reduce workload and the shortening of doctor
Operating time.
Snare according to the present utility model with V-shaped part 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 end of snare cutter head is formed towards snare cutter head
The V-shaped part of inner opening, the top of the V-shaped part are formed as spherical.
The V-arrangement is utilized when being vaporized snare cutting using the snare with V-shaped part using above-mentioned construction
Part, the tissue that the snare cutter head that emission electrode is formed can easily resist around objective body (are used to support snare
The part of snare cutter head) on, when being further inwardly inserted into snare, snare cutter head by the V-shaped part be deformed into
The corresponding shape of the objective body.Therefore, the objective body can be reliably entangled by the shape of the deformation, completed vaporization snare and cut
It cuts.As a result, snare according to the present utility model reliably can be vaporized snare cutting to objective body of different shapes.This
Outside, since the top of V-shaped part is formed as spherical, which will not be pierced into tissue, will not cause to human body
Unnecessary injury.
Preferably, the top of the snare according to the present utility model with V-shaped part, V-shaped part can pass through fusing
It forms and is formed as spherical.
Therefore, by being melted and molded, the top of V-shaped part can be easily formed into spherical shape.
Preferably, the snare according to the present utility model with V-shaped part, 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 according to the present utility model with V-shaped part, it is defeated that radio-frequency generator further generates second
Enter voltage；And emission electrode receives the second input voltage caused by radio-frequency generator, thus in emission electrode and circuit electricity
Apply second voltage between pole, so that objective body remains second temperature.
Preferably, the snare according to the present utility model with V-shaped part, the range of first voltage be 100Vrms extremely
300 Vrms, and the range of second voltage is 60Vrms to 80Vrms.
Preferably, the snare according to the present utility model with V-shaped part, 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 according to the present utility model with V-shaped part, loop electrode are wrapped on pipe sheath.
Preferably, the snare according to the present utility model with V-shaped part, snare include injecting cavity interface, injection
Chamber interface inputs instruction input liquid based on the liquid of controller.
Preferably, the snare according to the present utility model with V-shaped part, liquid are 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 the side view according to the snare of the utility model；
Fig. 2A is the enlarged view according to the snare cutter head of the snare of the utility model；
Fig. 2 B is the enlarged view of the state of the snare cutter head deformation in Fig. 2A；
Fig. 3 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 the cutting of the snares such as joint, backbone, skin, ear nose larynx, ablation, solidification and hemostasis.When the snare of the application uses
Between to belong to brought into temporary contact within 24 hours, according to time of contact classification, belong to external access according to contact human body qualitative classification
Instrument (with tissue/bone/dentine) and according to medical instrument structure feature classification belong to 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. 3) in 7 and finally to the input of objective body.
In addition, the operation part of snare further includes the transmitting electricity that the top of pipe sheath 7 is arranged in as shown in Fig. 1,2A and 2B
Pole 21 and loop electrode 22.Emission electrode 21 is telescopically arranged by sliding block 4.Further, emission electrode 21 is in objective body week
It encloses to form closed snare cutter head.In the present embodiment, the end of snare cutter head is formed towards the V of snare cutter head inner opening
Shape part 21A.The top of V-shaped part 21A is formed as spherical by being melted and molded.The melt-forming is referred to through high temperature etc.
So that the top of snare cutter head melts and to melt using the mold with spherical cavity corresponding with the shape of spherical part
A kind of process of the top sizing of the snare cutter head of change.
The V-arrangement is utilized when being vaporized snare cutting using the snare with V-shaped part using above-mentioned construction
Part 21A, the tissue that the snare cutter head that emission electrode is formed can easily resist around objective body (are used to support snare
Snare cutter head part) on, when being further inwardly inserted into snare, snare cutter head by V-shaped part 21A be deformed into
The corresponding shape of the objective body.Therefore, the objective body can be reliably entangled by the shape of the deformation, completed vaporization snare and cut
It cuts.As a result, snare according to the present utility model reliably can be vaporized snare cutting to objective body of different shapes.This
Outside, since the top of V-shaped part is formed as spherical, which will not be pierced into tissue, will not cause to human body
Unnecessary injury.
In the initial state, emission electrode 21 is completely retracting in pipe sheath 7, to facilitate the front end of pipe sheath 7 to enter human body.When
After reaching designated position, sliding block 4 is operable to move forward, and the emission electrode 21 on the top of pipe sheath 7 is thus arranged in by from pipe
The top of sheath 7 is released, to form closed snare cutter head around objective body, to entangle objective body, is vaporized snare and is cut
It cuts.
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 3, 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. 3 shows the sectional view of emission electrode conducting wire 16, including insulating layer 16a and gold
Belong to silk 16b.Emission electrode conducting wire 16 needs insulating layer, acts as insulation and heat-insulated effect, and loop electrode conducting wire 17 can not be set
Set insulating layer.Emission electrode conducting wire 16 and loop electrode conducting wire 17 are connected with emission electrode 21 and loop electrode 22 respectively.Into
One step, 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 (8)
1. including front bar, the pipe sheath extended from the front bar and the pipe sheath is arranged in a kind of snare with V-shaped part
The emission electrode and loop electrode on top, the emission electrode and the loop electrode are electrically connected to high frequency via conducting wire
Device, it is characterised in that:
The emission electrode forms closed snare cutter head around objective body, and the end of the snare cutter head is formed towards institute
The V-shaped part of snare cutter head inner opening is stated, the top of the V-shaped part is formed as spherical by being melted and molded.
2. as described in claim 1 with the snare of V-shaped part, 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.
3. as claimed in claim 2 with the snare of V-shaped part, 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.
4. as claimed in claim 3 with the snare of V-shaped part, 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.
5. as claimed in claim 3 with the snare of V-shaped part, 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.
6. as claimed in claim 3 with the snare of V-shaped part, which is characterized in that the loop electrode is wrapped in described
On pipe sheath.
7. as described in claim 1 with the snare of V-shaped part, 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.
8. as claimed in claim 7 with the snare of V-shaped part, which is characterized in that the liquid is conducting medium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820704716.3U CN209018931U (en) | 2018-05-13 | 2018-05-13 | A kind of snare with V-shaped part |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820704716.3U CN209018931U (en) | 2018-05-13 | 2018-05-13 | A kind of snare with V-shaped part |
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| Publication Number | Publication Date |
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| CN209018931U true CN209018931U (en) | 2019-06-25 |
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| CN201820704716.3U Active CN209018931U (en) | 2018-05-13 | 2018-05-13 | A kind of snare with V-shaped part |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114081615A (en) * | 2020-10-21 | 2022-02-25 | 常州乐奥医疗科技股份有限公司 | Novel medical electrotome and tool bit assembly thereof |
-
2018
- 2018-05-13 CN CN201820704716.3U patent/CN209018931U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114081615A (en) * | 2020-10-21 | 2022-02-25 | 常州乐奥医疗科技股份有限公司 | Novel medical electrotome and tool bit assembly thereof |
| CN114081615B (en) * | 2020-10-21 | 2022-08-05 | 常州乐奥医疗科技股份有限公司 | Novel medical electrotome and tool bit assembly thereof |
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