CN209153964U - A kind of seal assembly for incision knife - Google Patents
A kind of seal assembly for incision knife Download PDFInfo
- Publication number
- CN209153964U CN209153964U CN201820704723.3U CN201820704723U CN209153964U CN 209153964 U CN209153964 U CN 209153964U CN 201820704723 U CN201820704723 U CN 201820704723U CN 209153964 U CN209153964 U CN 209153964U
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- chamber
- seal assembly
- incision knife
- fluid
- sealing ring
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Abstract
The utility model discloses a kind of seal assemblies for incision knife, incision knife includes front bar, the pipe sheath extended from front bar, the emission electrode and loop electrode of two push rods and the top that pipe sheath is set, chamber is formed in front bar and is formed with fluid entry port in the periphery of front bar, manage intrathecal formation fluid-through chamber, liquid enters fluid-through chamber by chamber via fluid entry port, emission electrode and loop electrode are electrically connected to radio-frequency generator via the conducting wire for being each passed through two push rods, emission electrode is to cut silk, wherein, in the side opposite with fluid-through chamber of chamber, it is provided with seal assembly, seal assembly includes the fixed thread component of sealing ring and the side for sealing ring to be fixed on to chamber；And a push rod penetrates sealing ring and enters fluid-through chamber by chamber, another push rod penetrates sealing ring and entered by chamber and is formed in pipe sheath and in the cavity of position that deviates with fluid-through chamber.
Description
Technical field
The utility model relates to a kind of seal assemblies for incision knife.
Background technique
With medical development, clinically treated more and more using Minimally Invasive Surgery.Minimally Invasive Surgery usually utilizes
Endoscope (laparoscope, thoracoscope etc.) combines specific surgical knife tool to treat the lesions position of human body.For example, through duodenum
Mirror Retrograde cholangiopancreatography (ERCP) is that duodenoscope is inserted to duodenum drop section, appears ductus pancreaticus, bile duct in enteric cavity
The duodenofiberscope of inside wall opening is inserted into angiography catheter through duodenoscope treatment duct, is open through nipple and is inserted into pancreas gallbladder
Pipe Common openings successively respectively enter ductus pancreaticus, bile duct, inject contrast agent, the side checked under x-ray ductus pancreaticus, bile duct
Method.It through Endoscopic Sphincterotomy of Duodenal Papilla Attached art (EST), is further grown up on the basis of diagnosis ERCP technology
Cut duodenofiberscope sphincter and choledochus end section using dedicated high-frequency electrical incision knife under scope one
Kind treatment technology.
Duodenofiberscope includes main nipple and additional teat, and main nipple is usually also known as duodenofiberscope or watt nipple.
It is frequently located in descendant duodenum middle section back inner sidewall, and at stomach pylorus about 10cm, form is in nipple type mostly.The cream
Head otomy mainly all refers to the incision of main nipple.Under duodenum camera lens, the position of main nipple is usually all in center approximation
At 12 positions.Under the guidance of duodenoscope and the adjusting of front end lift pincers device, doctor operates the insertion of instrument high frequency incision knife
Into nipple, leads to high-frequency electrical, realize the cutting and solidification of tissue.Over the course for the treatment of, it needs in cutting process to lesion portion
Position input liquid such as conducting medium and input treatment liquid, cleaning solution etc. after completing cutting, therefore lead in incision knife
It is standing to be equipped with fluid entry port and lead to the fluid-through chamber of lesion.
This incision knife includes front bar and from the axially extending pipe sheath of front bar (slender bodies for protruding into human body), the periphery of front bar
It is provided with fluid entry port, which connects with chamber of the intrathecal fluid-through chamber inside front bar is managed
Logical, cutting wire runs through fluid-through chamber.Liquid enters fluid-through chamber via chamber from fluid entry port and eventually enters into human body.
It has however been found that in the course of surgery, when importing liquid to chamber and fluid-through chamber from fluid entry port, due to liquid
For body there are certain pressure, liquid can be in the side opposite with fluid-through chamber of chamber from the push rod for penetrating the side wall portion and entering chamber
Periphery leak out.The amount of the liquid of supply is caused to increase in this way.
Utility model content
The utility model is made in view of problem above and the utility model provides a kind of sealing group for incision knife
Part, incision knife include front bar, from front bar extend pipe sheath, two push rods and be arranged in pipe sheath top emission electrode and circuit
Electrode, front bar is interior to be formed chamber and is formed with fluid entry port in the periphery of front bar, manages intrathecal formation fluid-through chamber, liquid warp
Fluid-through chamber, emission electrode and loop electrode are entered via being each passed through described two push rods by chamber by fluid entry port
Conducting wire is electrically connected to radio-frequency generator, and emission electrode is to cut silk, wherein in the side opposite with fluid-through chamber of chamber, setting
There is seal assembly, seal assembly includes the fixed thread component of sealing ring and the side for sealing ring to be fixed on to chamber；And
And a push rod penetrates sealing ring and enters fluid-through chamber by chamber, another push rod penetrate sealing ring and by chamber into
Enter to be formed in pipe sheath and in the cavity of position that deviates with fluid-through chamber.
Using above-mentioned construction, since the side opposite with fluid-through chamber in chamber is provided with seal assembly, seal assembly packet
It includes the fixed thread component of sealing ring and the side for sealing ring to be fixed on to chamber and a push rod penetrates sealing ring simultaneously
And fluid-through chamber is entered by chamber, another push rod penetrate sealing ring and by chamber enter be formed in pipe sheath and with logical liquid
In the cavity for the position that chamber deviates, therefore seal assembly can be sealed in the periphery of a push rod He another push rod.Knot
Fruit is importing liquid (such as conducting medium etc.) from fluid entry port to chamber and fluid-through chamber using during incision knife operation
When, sealing ring can prevent the liquid entered in chamber and fluid-through chamber from fluid entry port due to the pressure of itself and from chamber
Side, leak out from the periphery of two push rods.
Preferably, the seal assembly according to the present utility model for incision knife may further include block, and block is set
It sets between sealing ring and fixed thread component.
Utilize above-mentioned construction, when the side by rotary fixing screw line component sealing ring to be fixed on to chamber, block
It can tightly be clipped between sealing ring and fixed thread component, to firmly fix sealing ring, while for example work as needs
Sealing ring is dismantled when rotary fixing screw line component, prevents sealing ring from following fixed thread component mobile.
Preferably, the seal assembly according to the present utility model for incision knife, block may include circular portion and from
The lug of circular portion protrusion.
Block can be reliably held at without with solid by the lug of block by its position using above-mentioned construction
Determine screw member rotation.
Preferably, the seal assembly according to the present utility model for incision knife, sealing ring can be moulded by EPDM
It forms.
Using above-mentioned construction, since sealing ring is molded by EPDM, it is made compared to traditional using rubber etc.
Sealing element, which can have the abilities such as superior resistance to oxidation, anti-erosion.Therefore, the use of sealing ring can be extended
Service life.
Preferably, the side of the seal assembly according to the present utility model for incision knife, fixed thread component can be set
It is equipped with notch.
Using above-mentioned construction, it is caught in notch using particular tool, screw fixed thread component with can be convenient.
Preferably, the seal assembly according to the present utility model for incision knife, said one push rod is relative to sealing group
Part is slidably.
Preferably, the seal assembly according to the present utility model for incision knife, pipe are inserted into cavity and from described
Seal assembly protrudes outward, another described push rod is inserted into the pipe.
Using above-mentioned construction, liquid and the cavity that pipe isolation imports chamber from fluid entry port can use.It changes
Sentence is talked about, which is only capable of entering fluid-through chamber from fluid entry port by chamber, without entering the cavity.
Preferably, the seal assembly according to the present utility model for incision knife, radio-frequency generator generate the first input electricity
Pole, and two electrodes are emission electrode and loop electrode, loop electrode and emission electrode by pipe sheath import objective body and
Galvanic circle is formed in objective body；Wherein, emission electrode receives the first input voltage caused by radio-frequency generator, thus sending out
Apply first voltage between radio pole and loop electrode, so that the liquid for being directed into objective body reaches the first temperature and promotes liquid
Body is converted into plasmasphere, to generate plasma, and the radio frequency energy based on plasma using electric energy excitation liquid
Amount is vaporized cutting to objective body.
Preferably, the seal assembly according to the present utility model for incision knife, 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 seal assembly according to the present utility model for incision knife, incision knife include guidewire lumen, for that will lead
Silk inputs along guidewire lumen and is inserted to the top of pipe sheath, to promote emission electrode and loop electrode to be placed at objective body.
Using this construction, emission electrode and loop electrode can be made swimmingly to reach at objective body by seal wire.
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 incision knife of the seal assembly of the utility model；
Fig. 2 is the partial enlarged view of the circle A in Fig. 1, and wherein seal assembly is dismantled from the incision knife；
Fig. 3 is the exploded partial perspective view of the circle A in Fig. 1, and wherein seal assembly is dismantled from the incision knife；
Fig. 4 is the longitdinal cross-section diagram of partial cut knife；And
Fig. 5 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 incision knife (low-temperature plasma incision knife) of the seal assembly of the utility model.This reality
It can be used in cutting, ablation and the solidification and hemostasis of duodenofiberscope with the incision knife in novel.In addition, the incision knife can also
It is enough in cutting, ablation, solidification and the hemostasis of soft tissue in the surgical operations such as joint, backbone, skin, ear nose larynx.The incision knife
Using the time be belong to brought into temporary contact within 24 hours, according to time of contact classification, belong to according to contact human body qualitative classification it is outer
Portion accesses instrument (with tissue/bone/dentine) and belongs to active medical instrument according to the classification of medical instrument structure feature.It cuts
Knife uses bipolar scheme, and its working frequency is 105kHz.Optionally, the working frequency of the incision knife can be in 100-110
In the range of.Incision knife is realized cutting, ablation, solidification to soft tissue in the operation such as ear nose larynx and is stopped by plasma technology
Blood.When work, incision knife is formed by physiological saline as conduction liquid, when activating between emission electrode and loop electrode one thin
Layer.When incision knife gives enough energy (voltage), physiological saline translates into the gas being made of charged particle of energizing
Body layer (plasmasphere).That is, incision knife generates plasma using energy excitation conducting medium (for example, physiological saline), and
Tissue element key is interrupted by the energy of plasma.The energy of plasma by protein and other Direct Pyrolysis at
O2, CO2, N2Equal gases, so that the vaporization completed to tissue is cut.When the work cutter head to incision knife gives low-voltage, electric field
Tissue resistance heat is required and generated lower than the thresholding for generating plasmasphere, so that tissue is carried out ablation solidification and hemostasis.
The operation part of incision knife includes that handle 1, pull rod 2, socket Pin 3, sliding block 4, cushion block 5, front bar 6 (are also referred to as drawn
Pole cap), pipe sheath 7, injecting cavity interface 8 and push rod 9,10 etc..Pull rod 2, which is held to facilitate by operator, operates the incision knife.Pipe sheath 7
It is the elongated tubular longitudinally extended from front bar 16, pipe sheath 7 will be inserted into objective body (lesion of human body).
As shown in figure 4, forming chamber 6a in front bar 6, and injecting cavity interface 8 is formed on the periphery of front bar 6.Liquid into
Inbound port 8a is formed in the injecting cavity interface 8 on the periphery of front bar 6.
Fluid-through chamber 18 is arranged in pipe sheath 7, which leads to the top of pipe sheath 7 from the chamber 6a being formed in front bar 6
End.Fluid-through chamber 18 surrounds emission electrode conducting wire 16 (referring to Fig. 5).Liquid (for example, conducting medium, ejected wash water etc.) via liquid into
Inbound port 8a enters fluid-through chamber 18 by chamber 6a.
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
After the liquid input instruction control liquid from fluid entry port 8a via chamber 6a to fluid-through chamber 18 and finally to objective body
Input.
Further, as in Figure 2-4, incision knife further includes seal assembly.Specifically, which includes sealing ring
11 and sealing ring 11 is fixed on to the fixed thread component 12 of the side of chamber 6a, the side of chamber 6a be chamber 6a with it is logical
The opposite side of sap cavity 18.
More specifically, the wall portion of the side of chamber 6a is formed with first step hole 6b, sets on the outside of the 6b of first step hole
It is equipped with diameter of the diameter greater than first step hole 6c of second step hole 6c and second step hole 6c.Sealing ring 11 is relative to this
First step hole 6b is fixed.The inner wall of second step hole 6c is formed with internal screw thread, and the periphery of fixed thread component 12 is formed with
External screw thread.Fixed thread component 12 is threaded in the 6c of second step hole as a result,.In addition, during fixed thread component 12 is
Empty generally cylindrical body.
Further, the seal assembly of preferred embodiment according to the present utility model further includes block 13, and block setting exists
Between sealing ring 11 and fixed thread component 12.Block 13 includes circular portion and two lug 13a from circular portion protrusion.
Lug 13a is adapted in the card slot 15 of second step hole 6c.In the case where lug 13a is fitted in card slot, by twisting
Screw member 12 is fastened, block 13 is fixed in the 6c of second step hole and sealing ring 11 is fixed on first step hole 6b
In.In addition, block 13 is hollow roughly circular thin-plate element.
In addition, push rod 9 penetrates sealing ring 11 and enters fluid-through chamber 18 by chamber 6a, and push rod 9 is relative to sealing
Component is slidably.Equally, push rod 10 penetrates sealing ring 11 and is entered in pipe sheath 7 by chamber 6a, is being formed in the pipe sheath 7
In and with the fluid-through chamber 18 deviate position cavity 7a in.In the present embodiment, push rod 10 is fixed relative to seal assembly.
Further, pipe 14 is inserted into cavity 7a and protrudes outward from seal assembly (fixing pipe screw member 12), and push rod 10 exists
In pipe 14 slidably.That is, pipe 14 is arranged between cavity 7a and push rod 10.
In addition, as shown in Figure 1, the operation part of incision knife further includes that 21 He of emission electrode on the top of pipe sheath 7 is arranged in
Loop electrode 22.Emission electrode 21 is formed as cutting silk.
Emission electrode 21 (cutting silk) and loop electrode 22 (circle set) pass through pipe sheath 7 and are imported into objective body and in objective body
Form galvanic circle.Emission electrode 21 is via the socket Pin 3 being connect by high frequency connecting line with radio-frequency generator (not shown)
The first input voltage caused by the radio-frequency generator is received, to apply first between emission electrode 21 and loop electrode 22
Voltage, so that the conducting medium reaches the first temperature and the conducting medium is promoted to be converted into plasmasphere, thus sharp
Plasma is generated with electric energy excitation conducting medium, and the RF energy based on plasma is vaporized objective body and cuts
It cuts.
In the initial state, emission electrode 21 and loop electrode 22 be depend on substantially it is linear, before facilitating pipe sheath 7
End enters human body, as shown in phantom in fig. 1.After reaching designated position, sliding block 4 is moved backward, and is pulled emission electrode 21, is made
Emission electrode 21 and loop electrode 22 form tortuous bow shape, as shown by the solid lines of fig. 1.
As shown in Figure 1, incision knife includes guidewire lumen, for seal wire to be inputted to along guidewire lumen and is inserted to the top of pipe sheath 7,
To promote emission electrode 21 and loop electrode 22 to be placed at objective body.Pass through seal wire, emission electrode 21 and loop electrode as a result,
22 can swimmingly reach at objective body.
Seal wire for being inputted along the guidewire lumen and being inserted to the head end of incision knife by guidewire lumen interface 23, to promote to emit
Electrode 21 and loop electrode 22 are placed at the objective body.Pull rod 2 is for making operator by providing support pull rod 2
Power.Socket Pin 3 is connect by high frequency connecting line with radio-frequency generator, for receiving first caused by the radio-frequency generator
Input voltage.Socket Pin 3 receives the second input voltage caused by the radio-frequency generator and inputs electricity for described second
Pressure is transferred to emission electrode 21, applies second voltage between emission electrode 21 and loop electrode 22, so that objective body is kept
For 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 L1 of loop electrode 22 can be any reasonable numerical value, such as 4 to 5 millimeters.Wherein, loop electrode 22
The one end at close 7 top of pipe sheath can be any reasonable numerical value, such as 2 to 3 millimeters with the top end face distance L2 of pipe sheath 7.
Wherein, the top of pipe sheath 7, fluid entry port from the description below is arranged in water outlet (or referred to as infusion port, not shown)
The liquid that 8a enters enters objective body from water outlet.
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, preceding
The material of bar 6 is ABS, and the material of cushion block 5 is ABS, and the material of sliding block 4 is ABS, the material of socket Pin 3 be stainless steel 304 with
And the material of handle 1 is ABS.
In addition, as shown in figure 5, illustrating emission electrode conducting wire (cutting silk conducting wire) 16, loop electrode conducting wire 17, fluid-through chamber
18, emission electrode chamber 19 and guidewire lumen B.In more detail, the enlarged view in Fig. 5 shows the section of emission electrode conducting wire 16
Figure, including insulating layer 16a and wire 16b.Emission electrode conducting wire 16 needs insulating layer, acts as insulation and heat-insulated work
With loop electrode conducting wire 17 can be 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.Into one
Step, emission electrode conducting wire 16 and loop electrode conducting wire 17 are each passed through the inside of push rod 9 and push rod 10 and are connected to (not shown)
Radio-frequency generator.It is operable to move forward and push rod 10 mobile relative to seal assembly to push rod 9 in sliding block 4 as described above
When fixed relative to seal assembly, emission electrode conducting wire 16 and loop electrode conducting wire 17 are kept at push rod 9 and push rod
10 inside.
Moreover it is preferred that sealing ring 11 can be molded by such as EPDM.But the utility model not office
It is limited to this.For example, sealing ring 11 can be made of any material that can be realized sealing, such as rubber etc..
Moreover it is preferred that the side (outside) of fixed thread component 12 is provided with notch 12a.But the utility model is simultaneously
It is not limited to this.For example, lug can be set in the outside of fixed thread part 12 and by lug rotary fixing screw line part 12.
The effect that preferred embodiment according to the present utility model is realized is described below.
Firstly, since being provided with seal assembly in the side opposite with fluid-through chamber 18 of chamber 6a, seal assembly includes close
The fixed thread component 12 of seal 11 and the side for sealing ring 11 to be fixed on to chamber and push rod 9 penetrates sealing ring 11 simultaneously
And fluid-through chamber 18 is entered by chamber 6a, 10 sealing assembly of push rod can be sealed in the periphery of push rod 9 and push rod 10.As a result,
Liquid is imported to chamber 6a and fluid-through chamber 18 from fluid entry port 8a during being performed the operation using incision knife (such as conductive to be situated between
Matter) when, sealing ring 11 can prevent the liquid entered in chamber 6a and fluid-through chamber 18 from fluid entry port 8a due to itself
Pressure and leaked out in the side of chamber 6a, from the periphery of two push rods 9,10.
Further, since block 13 is arranged between sealing ring 11 and fixed thread component 12.Therefore, when solid by rotation
When determining side of the screw member 12 sealing ring 11 to be fixed on to chamber 6a, block 13 can tightly be clipped in sealing ring 11 and consolidate
Determine between screw member 12, to firmly fix sealing ring 11, and while for example when need to dismantle seal assembly rotate it is solid
When determining screw member 12, prevent sealing ring 11 from following fixed thread component 12 mobile.
Further, by the lug 13a of block 13, block 13 can be reliably held to its position without with solid
Determine the rotation of screw member 13.
Further, close compared to made of traditional utilization rubber etc. since sealing ring 11 is molded by EPDM
Sealing, the sealing ring 11 can have the abilities such as superior resistance to oxidation, anti-erosion.Therefore, can extend sealing ring uses the longevity
Life.
Further, the side of fixed thread component 12 is provided with notch.Therefore, it is caught in notch using particular tool, it can be with
Easily screw fixed thread component 12.
Further, pipe 14 is inserted into cavity 7a and protrudes outward from seal assembly, and push rod 10 is inserted into pipe 14.Cause
This, can use liquid and cavity 7a that the isolation of pipe 14 imports chamber 6a from fluid entry port 8a.In other words, the liquid
Body is only capable of entering fluid-through chamber 10 from fluid entry port 8a by chamber 6a, without entering cavity 7a.
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 is needed
Insulating layer is 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 (10)
1. a kind of seal assembly for incision knife, the incision knife include front bar, the pipe sheath extended from the front bar, two push away
The emission electrode and loop electrode of bar and the top that the pipe sheath is arranged in, the front bar is interior to form chamber and in the front bar
Periphery be formed with fluid entry port, the intrathecal formation fluid-through chamber of pipe, liquid passes through institute via the fluid entry port
Chamber is stated into the fluid-through chamber, the emission electrode and the loop electrode are via the conducting wire for being each passed through described two push rods
It is electrically connected to radio-frequency generator, the emission electrode is to cut silk, it is characterised in that:
In the side opposite with the fluid-through chamber of the chamber, it is provided with seal assembly, the seal assembly includes sealing ring
With the fixed thread component of the side for the sealing ring to be fixed on to the chamber；And
One push rod penetrates the sealing ring and enters the fluid-through chamber by the chamber, another push rod penetrates described close
Seal and being entered by the chamber is formed in the pipe sheath and in the cavity of position that deviates with the fluid-through chamber.
2. being used for the seal assembly of incision knife as described in claim 1, which is characterized in that the seal assembly further comprises
Block, the block are arranged between the sealing ring and the fixed thread component.
3. as claimed in claim 2 be used for incision knife seal assembly, which is characterized in that the block include circular portion and
The lug protruded from circular portion.
4. being used for the seal assembly of incision knife as described in claim 1, which is characterized in that the sealing ring is by EPDM mould
It makes.
5. being used for the seal assembly of incision knife as described in claim 1, which is characterized in that the side of the fixed thread component
It is provided with notch.
6. being used for the seal assembly of incision knife as described in claim 1, which is characterized in that one push rod is relative to described
Seal assembly is slidably.
7. as described in claim 1 be used for incision knife seal assembly, which is characterized in that pipe be inserted into the cavity and
It is protruded outward from the seal assembly, another described push rod is inserted into the pipe.
8. being used for the seal assembly of incision knife as described in claim 1, which is characterized in that
The radio-frequency generator generates the first input voltage；And
The loop electrode and the emission electrode import objective body by the pipe sheath and form conduction in the objective body
Circuit；
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 simultaneously
And the liquid is promoted to be converted into plasmasphere, to excite the liquid to generate plasma using electric energy, and it is based on
The RF energy of plasma is vaporized cutting to the objective body.
9. being used for the seal assembly of incision knife as claimed in claim 8, 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.
10. being used for the seal assembly of incision knife as claimed in claim 9, which is characterized in that the incision knife includes guidewire lumen,
For seal wire to be inputted to along the guidewire lumen and is inserted to the top of the pipe sheath, to promote the emission electrode and the circuit
Electrode is placed at the objective body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820704723.3U CN209153964U (en) | 2018-05-13 | 2018-05-13 | A kind of seal assembly for incision knife |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820704723.3U CN209153964U (en) | 2018-05-13 | 2018-05-13 | A kind of seal assembly for incision knife |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209153964U true CN209153964U (en) | 2019-07-26 |
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ID=67326676
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820704723.3U Active CN209153964U (en) | 2018-05-13 | 2018-05-13 | A kind of seal assembly for incision knife |
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| Country | Link |
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| CN (1) | CN209153964U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110464446A (en) * | 2018-05-13 | 2019-11-19 | 上海诺英医疗器械有限公司 | A kind of seal assembly for incision knife |
-
2018
- 2018-05-13 CN CN201820704723.3U patent/CN209153964U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110464446A (en) * | 2018-05-13 | 2019-11-19 | 上海诺英医疗器械有限公司 | A kind of seal assembly for incision knife |
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