CN105286991B - A kind of electric snare - Google Patents
A kind of electric snare Download PDFInfo
- Publication number
- CN105286991B CN105286991B CN201510671208.0A CN201510671208A CN105286991B CN 105286991 B CN105286991 B CN 105286991B CN 201510671208 A CN201510671208 A CN 201510671208A CN 105286991 B CN105286991 B CN 105286991B
- Authority
- CN
- China
- Prior art keywords
- lasso
- flexible sheath
- control
- electric
- joystick
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 15
- 239000010959 steel Substances 0.000 claims abstract description 15
- 239000002184 metal Substances 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 229910004337 Ti-Ni Inorganic materials 0.000 claims description 3
- 229910011209 Ti—Ni Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- KHYBPSFKEHXSLX-UHFFFAOYSA-N iminotitanium Chemical compound [Ti]=N KHYBPSFKEHXSLX-UHFFFAOYSA-N 0.000 claims description 3
- 206010028980 Neoplasm Diseases 0.000 abstract description 10
- 208000037062 Polyps Diseases 0.000 abstract description 8
- 238000010276 construction Methods 0.000 abstract description 2
- 238000005452 bending Methods 0.000 description 3
- HZEWFHLRYVTOIW-UHFFFAOYSA-N [Ti].[Ni] Chemical compound [Ti].[Ni] HZEWFHLRYVTOIW-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- FGRBYDKOBBBPOI-UHFFFAOYSA-N 10,10-dioxo-2-[4-(N-phenylanilino)phenyl]thioxanthen-9-one Chemical compound O=C1c2ccccc2S(=O)(=O)c2ccc(cc12)-c1ccc(cc1)N(c1ccccc1)c1ccccc1 FGRBYDKOBBBPOI-UHFFFAOYSA-N 0.000 description 1
- 210000000621 bronchi Anatomy 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003902 lesion Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
Landscapes
- Surgical Instruments (AREA)
Abstract
The invention discloses a kind of surgical instruments that tissue is cut by the way of electric current is made by tissue to be heated, specially a kind of electric snare, the electric snare includes the joystick being sequentially connected and flexible sheath, control steel wire is equipped with the flexible sheath, one of the control steel wire is connected with the electrode on the sliding handle for being located at joystick, and other end has the lasso of seeker provided with one and extends to the distal end of flexible sheath；Characterized in that, being also equipped with a control cord in the flexible sheath, one of the control cord is passed by joystick side, and other end is connected on the seeker of lasso.Electric circle set utensil of the present invention has simple in construction, the easily controllable advantage of lasso opening direction, it is adaptable to cut off the polyp or tumour along pipeline axial growth.
Description
Technical field
The present invention relates to the surgical instruments for the energy that on-mechanical form is transmitted to human body, and in particular to one kind, which is used, makes electric current
The apparatus of tissue is cut by way of tissue to be heated.
Background technology
Electric snare is that commonly use in surgical operation a kind of is used to cut off the polyp in the various tube chambers of human body and the device of tumour
Tool.Electric snare reaches lesions position via endoscope path way in operation, is entangled by the lasso of electric snare end to be cut off
Connect high frequency electric after polyp or tumour, being organized in the presence of high frequency electric for lasso contact produces heat, tissue is gasified
Decompose to reach the purpose of cutting.Because the heat that the tissue that lasso is contacted is produced can make neighbouring tissue coagulation simultaneously, because
This electric circle set utensil has the advantages that to stop blooding while cutting.
How fast and accurately to entangle the interior polyp to be cut off of pipe (such as bronchus) or tumour is electric snare hand
A technological difficulties in art.Electric snare enter pipe in when its lasso dehisce face tube wall, some are smaller
Polyp or tumour be generally radially grown on duct wall, lasso is easy to be entangled.But, some larger polyps or swollen
Knurl often grows axially along the pipe due to being limited by opposing pipe wall, and lasso is difficult then or even can not entangled.
Notification number discloses a kind of " easily rotating snare ", the easy rotation for 203647463U utility application
Snare includes the handle, turncap, drag-line and the lasso that are sequentially connected, and lasso is externally provided with outer tube, the drag-line by titanium-nickel wire and
One section of flexible steel cable is formed by connecting, and the structure combined using this titanium-nickel wire and flexible steel cable is produced to eliminate lasso rotary head
Raw bounce, has the advantages that rotates effe is good.But this easy rotation snare simply there is lasso to be rotated around conduit axis
The good advantage of effect, the direction of dehiscing of lasso is also all the time towards tube wall during rotation, however it remains above-mentioned technical problem.
On the other hand, due to being limited by endoscope path way size, therefore it is difficult to design the mechanical structure of complexity to control
The direction of dehiscing of race.
The content of the invention
The technical problems to be solved by the invention are：A kind of electric snare is provided, of the electric controllable race of snare
Mouth direction, it is adaptable to cut off the polyp or tumour along pipe axial growth.
The present invention solve above-mentioned technical problem technical scheme be：
A kind of electric snare, the electric snare includes the joystick being sequentially connected and flexible sheath, the flexible sheath
In be equipped with control steel wire, one of the control steel wire is connected with the electrode on the sliding handle for being located at joystick, and other end is provided with
One has the lasso of seeker and extends to the distal end of flexible sheath；Characterized in that, being also equipped with one in the flexible sheath
Root control cord, one of the control cord is passed by joystick side, and other end is connected on the seeker of lasso.
For ease of controlling the direction of dehiscing of lasso, an improvement project of the invention is that the control cord passes control hand
One of handle side is to be connected to a control finger ring.
Control cord described in above-mentioned technical proposal preferably selects metallic cords, such as medical metal suture made of Ti-Ni alloy,
Free Transform so both without limitation on lasso, will not also be burnt when being powered cutting.
Because the lasso of electric snare is made of flexible wire, its open after be flat ring
Shape, therefore it is much smaller than its lateral bending resistance in the bending resistance perpendicular to its direction of dehiscing.The application dexterously make use of
The above-mentioned mechanical characteristic of lasso, is to connect a control cord on the seeker of lasso, pulls the control cord easily to control set
The direction of dehiscing of circle, and then conveniently realize the purpose of polyp or tumour of the snare along pipe axial growth.In addition, this hair
Bright described electric snare also has advantage simple in construction, easy to control.
Brief description of the drawings
Fig. 1 is the structural representation of a specific embodiment of electric snare of the present invention.
The structural representation of automatic open configuration when Fig. 2~3 are the lasso stretching flexibility sheath of electric snare shown in Fig. 1,
Wherein, Fig. 2 is front view, and Fig. 3 is left view.
Fig. 4~6 are that the controlled rope of lasso of electric snare shown in Fig. 1 leads the structural representation of tension state, wherein, Fig. 4 is
Front view, Fig. 5 is left view, and Fig. 6 is top view.
Fig. 7~9 are the structural representation of the joystick of electric snare shown in Fig. 1, wherein, Fig. 7 is front view (section view),
Fig. 8 is left view, and Fig. 9 is the A-A sectional views in Fig. 7.
Figure 10 is the use state schematic diagram of electric snare shown in Fig. 1.
Embodiment
Referring to Fig. 1 and combination Fig. 2 and 7, the electric snare in this example includes the joystick being sequentially connected and flexible sheath
3, the joystick is made up of core bar 1 and sliding handle 2, and a conductive control steel wire 4 and one is equipped with the flexible sheath 3
Root control cord 6.
Referring to Fig. 2~6 and combine Fig. 1, the distal end that control steel wire 4 extends to flexible sheath 3 is provided with lasso 5, the lasso 5 by
Flexible wire is made, and is annular in the case where stretching out the free state of flexible sheath 3.It is made the two of the wire of lasso 5
Head is attempted by control steel wire 4 distal end by joint 5-1, and with controlling the offside outward bending of the tie point of steel wire 4 into U-shaped, shape
Into a seeker 5-2.Described control cord 6 is medical metal suture made of Ti-Ni alloy, and its distal end is connected with seeker 5-2.
Referring to Fig. 7~9 and Fig. 1 is combined, the described shaft of core bar 1 is provided with bar in cylinder along shaft length direction
The guide groove 1-2 of body；One of shaft is provided with the collar 1-1 of an annular, and other end is connected with flexible sheath 3, the flexibility
Sheath 3 is from the described guide groove 1-2 of the tip protrusion of the other end.The sliding handle 2 is set on the shaft of core bar 1, its
Both sides are arranged with two finger-holes；The lower section of one finger-hole is provided with an electrode mounting hole 2-1, and the lower section of another finger-hole is provided with one
The bullport 2-2 passed for control cord 6.Electrode 8 for connecting high frequency electric source is located in electrode mounting hole 2-1, and its root is stretched
Into guide groove 1-2.Near-end bag of the control steel wire 4 in 1-2 in guide groove sets the metal tube 9 of one section of hard, leads to
Cross the metal tube 9 one is connected with the root of electrode 8, and the other end of metal tube 9 is reached in flexible sheath, and its effect is to prevent
When promoting sliding handle 2, control steel wire 4 is bent.The near-end bootstrap hole 2-2 of described control cord 6 is passed, and end is provided with an annulus
The control finger ring 7 of shape.
Below in conjunction with the application method of the electric snare in Brief Description Of Drawings this example.
Referring to Figure 10 and with reference to Fig. 2~6, sliding handle 2 is promoted, lasso 5 just stretches out flexible sheath 3 and natural flare up flat
Structure, when the seeker 5-2 of lasso 5 is close to tumour 10 by controlling finger ring 7 to pull control cord 6, lasso 5 is just to perpendicular to it
The direction warpage dehisced；Now, rotate the side of dehiscing that whole electric snare makes lasso 5 to the head of prospective tumor 10, be further continued for
Preceding promotion sliding handle 2；When lasso 5 entangles the root along pipeline axial growth tumour 10, you can pull sliding handle 2 and the implementation that is powered is cut
Cut.
Claims (3)
1. a kind of electric snare, the electric snare is included in the joystick being sequentially connected and flexible sheath, the flexible sheath
Control steel wire is equipped with, one of the control steel wire is connected with the electrode on the sliding handle for being located at joystick, other end is provided with one
Lasso with seeker and the distal end for extending to flexible sheath；Characterized in that, being also equipped with one in the flexible sheath
Control cord, one of the control cord is passed by joystick side, and other end is connected on the seeker of lasso；The set is made
Two of the wire of circle is attempted by control steel wire distal end by joint, and described side of the control cord through the joint passes institute
State flexible sheath.
2. a kind of electric snare according to claim 1, it is characterised in that described control cord passes joystick side
One be to be connected to a control finger ring.
3. a kind of electric snare according to claim 1 or 2, it is characterised in that described control cord is cured for Ti-Ni alloy
Use metal suture line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510671208.0A CN105286991B (en) | 2015-10-13 | 2015-10-13 | A kind of electric snare |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510671208.0A CN105286991B (en) | 2015-10-13 | 2015-10-13 | A kind of electric snare |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105286991A CN105286991A (en) | 2016-02-03 |
| CN105286991B true CN105286991B (en) | 2017-10-31 |
Family
ID=55185307
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510671208.0A Expired - Fee Related CN105286991B (en) | 2015-10-13 | 2015-10-13 | A kind of electric snare |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105286991B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106963452A (en) * | 2017-04-01 | 2017-07-21 | 上海心玮医疗科技有限公司 | A kind of snare |
| CN114145836B (en) * | 2021-12-01 | 2024-03-22 | 复旦大学附属中山医院 | Three-wire snare for use under a digestive endoscope |
| CN114699626A (en) * | 2022-06-02 | 2022-07-05 | 浙江大学医学院附属第一医院 | Mouth and nose conversion device |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5242441A (en) * | 1992-02-24 | 1993-09-07 | Boaz Avitall | Deflectable catheter with rotatable tip electrode |
| US5376094A (en) * | 1993-08-19 | 1994-12-27 | Boston Scientific Corporation | Improved actuating handle with pulley system for providing mechanical advantage to a surgical working element |
| JP3743096B2 (en) * | 1997-02-10 | 2006-02-08 | フジノン株式会社 | Forceps device with snare |
| US5897554A (en) * | 1997-03-01 | 1999-04-27 | Irvine Biomedical, Inc. | Steerable catheter having a loop electrode |
| JP4763307B2 (en) * | 2005-02-18 | 2011-08-31 | オリンパス株式会社 | Endoscopic treatment tool |
| US20100057077A1 (en) * | 2008-09-02 | 2010-03-04 | Wilson-Cook Medical Inc. | Fep pre-curved distal tip sphincterotome |
| CN102309363B (en) * | 2010-06-29 | 2015-09-09 | 王东 | A kind of integrated endoscope operation platform |
| CN103142303B (en) * | 2013-03-14 | 2016-02-17 | 杭州安杰思医学科技有限公司 | Medical electric snare |
| CN203647463U (en) * | 2013-08-21 | 2014-06-18 | 常州市久虹医疗器械有限公司 | Easy-to-rotate snare |
| CN104326530B (en) * | 2014-11-06 | 2016-05-11 | 清华大学 | The device and method of a kind of duct type electro-catalysis and ozone cooperative oxidation sewage treatment |
-
2015
- 2015-10-13 CN CN201510671208.0A patent/CN105286991B/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN105286991A (en) | 2016-02-03 |
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Granted publication date: 20171031 |