CN202515776U - Endoscope high-frequency incision knife with precise fixed length knife head - Google Patents
Endoscope high-frequency incision knife with precise fixed length knife head Download PDFInfo
- Publication number
- CN202515776U CN202515776U CN2012201238899U CN201220123889U CN202515776U CN 202515776 U CN202515776 U CN 202515776U CN 2012201238899 U CN2012201238899 U CN 2012201238899U CN 201220123889 U CN201220123889 U CN 201220123889U CN 202515776 U CN202515776 U CN 202515776U
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- cutter head
- core bar
- knife
- fixed length
- incision knife
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Abstract
The utility model discloses an endoscope high-frequency incision knife with a precise fixed length knife head. The endoscope high-frequency incision knife comprises the knife head and a core bar with a handle at the tail end. One part of the knife head is positioned in the core bar, and the other part of the knife head extends out of the core bar; and the knife head can be stretched and move in the core bar. An insulating outer pipe is formed at the part of the knife head, which extends out of the core bar; a controlling piece used for controlling the movement of the knife head is arranged on the core bar; a fastener is arranged on the outer wall of the knife head positioned in the insulating outer pipe; a limiting block matched with the fastener is arranged on the inner side of the insulating outer pipe; and the maximum distance of the knife head extending out of the core bar is controlled through the matching of the fastener and the limiting block, so that the precision fixed length of the knife head is further realized. The endoscope high-frequency incision knife has a simple structure, is flexible to operate, safe and reliable, and realizes the precision and fixed length of the cutting part of the incision knife by arranging a positioning mechanism, thereby being beneficial to improving the ESD (endoscopic submucosal dissection) operation efficiency, and compared with the traditional incision knife, the endoscope high-frequency incision knife has the advantages that the operation risk can be lowered, the quantity of complicating diseases in operation can be reduced, and the pain of patients can be relieved.
Description
Technical field
This utility model relates to medical instruments field, especially a kind of high frequency incision knife that under endoscope, excises mucous membrane tissue, the accurate fixed length of specifically a kind of cutter head endoscope high frequency incision knife.
Background technology
As everyone knows, (Endoscopic Submucosal Dissection ESD) is a kind of a kind of method of carrying out digestive tract pathological changes mucous membrane resection through decollement under the scope mucosa.The ESD art generally is at first to be need excise position tissue protuberance at focus Submucosa injecting fluid; Adopt the focus edge slit (circle of contact) of apparatus such as high frequency incision knife then along protuberance; Injecting fluid and progressively peel off pathological tissues along Submucosa repeatedly under mucosa again is until with lesion resection.
Because relate to high frequency incision technology, there is the risk of perforation, the doctor need know that cutter head stretches out the precise length of insulation outer tube.Because endoscope's high frequency incision knife arrives lesion locations through the endoscopic instruments work cavity, scope is through the crooked human body alimentary canal of human body, and number of bends or radius of curvature are different, and cutter head stretches out the length of insulation outer tube will be different.Because of the expectation the cutter head extension elongation in several millimeters scopes; This cutter head extension elongation that causes because of practical situation changes changes also several millimeters scopes, and this has just increased the doctor greatly and has controlled the difficulty of cutter head and the risk of perforation (stretching out long) or apparatus inefficacy (stretching out too short).
At present, depend merely on to manufacture in this apparatus process and control, not only increase material, time cost, this control also is insecure.
Therefore, along with the rising of digestive tract mucous membrane disease sickness rate, the ESD technology is used for clinical more and more; In order to improve ESD operation efficient better, reduce complication in the art, alleviate patient's misery; Design a kind of simple for structure; Endoscope's high frequency incision knife simple to operate, safe and reliable is very important.
The utility model content
The utility model purpose: the purpose of this utility model is can not accurately control to the high frequency incision knife cutter head extension elongation of using in the present ESD process; And clinical practice is to need the accurate problem of cutter head extension elongation, and the accurate fixed length of a kind of cutter head endoscope high frequency incision knife is provided.
In order to solve the problems of the technologies described above; The utility model discloses the accurate fixed length of a kind of cutter head endoscope high frequency incision knife, comprise that cutter head and tail end are provided with the core bar of handle, the part of cutter head is positioned at core bar; Another part stretches out core bar, and cutter head can telescopic moving in core bar.The part that cutter head stretches out core bar is provided with the insulation outer tube; Core bar is provided with and is used to control the control piece that cutter head moves; The cutter head outer wall that is positioned at said insulation outer tube is provided with fastener, and the inboard of insulation outer tube is provided with the limited block adaptive with said fastener, through the cooperation of fastener and limited block; Thereby control the ultimate range that cutter head stretches out core bar, thereby further realize the accurate fixed length of cutter head.
In this utility model, said fastener is bulk, ring-type or tubulose.Said block fastener can be the fixture block of one group of space.
In this utility model, said limited block is bulk or ring-type.
In this utility model, said control piece is to be arranged on the outer slide block of core bar, and core bar is actively plugged in the slide block and can under the drive of handle, rotates with respect to slide block, and slide block is connected with cutter head and links.
In this utility model; The end that core bar deviates from handle is provided with the conductive plug installation sleeve; Be provided with conductive plug, power spring successively in the said conductive plug installation sleeve, and conducting ring or conduction steel ball, conductive plug, power spring are electrically connected with said cutter head through conducting ring or conduction steel ball.
In this utility model, said conductive plug installation sleeve is provided with oversheath, and the part of said insulated sleeve is positioned at oversheath.Thereby with the fixed-site of insulation tube, insulation tube also can directly connect core bar and carry out fixed-site.
In this utility model, the contact portion of said conductive plug installation sleeve and core bar is provided with the tongue and groove structure, thereby realizes the axial location of conductive plug installation sleeve and core bar.The outer wall of said core bar is provided with concave inward structure, and said conductive plug installation sleeve inwall is provided with the outer male structure adaptive with said concave inward structure; Perhaps, the outer wall of said core bar is provided with outer male structure, and said conductive plug installation sleeve inwall is provided with and the adaptive concave inward structure of said outer male structure.
In this utility model, the non-cutting part of said cutter head is provided with insulating barrier, and the cutting part of cutter head is L type, straight type, ball-type or multiangular.
Beneficial effect: the accurate fixed length of cutter head disclosed in the utility model endoscope high frequency incision knife, simple for structure, flexible operation; Safe and reliable, through being provided with detent mechanism, realized the accurate fixed length of incision knife cutting part; Thereby help improving ESD operation efficient, compare, can reduce operation risk with traditional incision knife; Reduce complication in the art, alleviate patient's misery.
Description of drawings
Below in conjunction with accompanying drawing and the specific embodiment this utility model is done specifying further, the above-mentioned and/or otherwise advantage of this utility model will become apparent.
Fig. 1 is the overall structure sketch map of this utility model embodiment.
Fig. 2 is the sectional structure chart (cutter head income insulation outer tube) of Fig. 1.
Fig. 3 is the sectional structure chart (cutter head stretches out the insulation outer tube) of Fig. 1
Fig. 4 is the enlarged drawing of a-quadrant among Fig. 2.
Fig. 5 is the enlarged drawing of a-quadrant among Fig. 3.
Fig. 6 a and 6b are triangular form cutter head income insulation outer tubes, the structural representation of block limited block and ring-type fastener.
Fig. 7 a and 7b are triangular form cutter head income insulation outer tubes, the structural representation of ring-type limited block and block fastener.
Fig. 8 is that the triangular form cutter head stretches out the insulation outer tube, the structural representation of ring-type limited block and tubulose fastener.
Fig. 9 is the L type cutter head structure sketch map of a kind of embodiment.
Figure 10 is the straight type cutter head structure sketch map of a kind of embodiment.
Figure 11 is the ball-type cutter head structure sketch map of a kind of embodiment.
Figure 12 is the triangular form cutter head structure sketch map of a kind of embodiment.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment this utility model is further described.
As shown in Figure 1; The utility model discloses the accurate fixed length of cutter head endoscope high frequency incision knife, comprise that cutter head 1, tail end are provided with handle 8 core bars 5 and conductive plug 7, the part of cutter head 1 is positioned at core bar 5; Another part stretches out core bar 5; The part that cutter head 1 stretches out core bar 5 is provided with insulation outer tube 3, insulation outer tube 3 fixed-site, and core bar 5 is provided with and is used to control the control piece 4 that cutter head 1 moves.Like Fig. 4 and shown in Figure 5, cutter head 1 outer wall that is positioned at said insulation outer tube 3 is provided with fastener 6, and the inboard of insulation outer tube 3 is provided with the limited block 2 adaptive with said fastener 6.
Among a kind of embodiment of this utility model, said control piece is the slide block 4 that is arranged on outside the core bar 5, and core bar 5 is actively plugged in the slide block 4 and can under the drive of handle 8, rotates with respect to slide block 4, and slide block 4 is connected with cutter head 1 and links.
As shown in Figures 2 and 3; Core bar 5 deviates from the conductive plug installation sleeve 9 that suit on the end of handle 8 can rotate with respect to core bar 5; Conductive plug 7 is fixed in the conductive plug installation sleeve 9, and an end of described conductive plug 7 and an end in contact of power spring 10 offset, and the other end of power spring 10 and conducting ring or conduction steel ball 11 exposure phases support; Conducting ring or conduction steel ball 11 and cutter head 1 sliding-contact; Thereby realize being electrically connected of cutter head 1 and conductive plug 7, the other end of conductive plug 7 with promptly can be cutter head 1 after power supply links to each other and supply power the function of realization electric knife.
During practical implementation; Cutter head 1 surperficial non-cutting part also can be designed to have the structure of insulating barrier; Promptly add cover insulation outer tube 3 on a section outside cutter head 1 is positioned at core bar 5, and an end of insulation outer tube 3 can be designed to horn-like structure, can an end of conductive plug installation sleeve 9 be inserted in the horn opening end of this insulation outer tube 3 this moment; Also can on conductive plug installation sleeve 9 inserts the end of horn opening end of these insulation outer tubes 3, oversheath 12 be installed simultaneously, like Fig. 2, shown in 3.
During practical implementation, cutter head 1 guarantees cutter head 1 overhang surplus to there being enough length to supply to run into situation such as bend in the use between the core bar 5.Moving slider 4, inconsistent when cutter head 1 is stretched out through the fastener of installing on the inboard limited block 2 of insulation outer tube 3 and the cutter head 16, realize accurate restriction to cutter head 1 overhang.
Shown in Fig. 2 and 3, on the end of the horn opening end of described conductive plug installation sleeve 9 these insulation outer tubes 3 of insertion oversheath 12 is installed.A kind of embodiment of this utility model; The end inwall that conductive plug installation sleeve 9 is sleeved on core bar 5 is provided with outer male structure 13; Outer wall at core bar 5 correspondence positions is provided with concave inward structure 14, thereby male structure 13 is inserted the axial location that realizes conductive plug installation sleeve 9 and core bar 5 in the described outer recessed structure 14 in described.
During practical implementation, the position of limited block 2 can reserve cutter head length in the indentation inwards of conduit one end, makes cutter head can take in insulation outer tube 3 fully, or the position of limited block holds level with both hands together with insulation outer tube 3 one, and cutter head can partly be taken in the outer tube 3 that insulate.During practical implementation, fastener 6 can have insulating coating or self insulation with limited block 3.
A kind of embodiment shown in Fig. 6 a and 6b, the cross section of cutter head 1 is triangle 1d, and fastener 6 is ring-type 6b, and limited block 2 is ring-type 2b.
Another embodiment shown in Fig. 7 a and 7b, the cross section of cutter head 1 is triangle 1d, and fastener 6 is block 6a, and limited block 2 is block 2a.
Another embodiment as shown in Figure 8, the cross section of cutter head 1 is triangle 1d, and fastener 6 is tubulose 6c, and limited block 2 is ring-type 2a.
A kind of embodiment as shown in Figure 9, the cutting part of cutter head 1 are the L type.
A kind of embodiment shown in figure 10, the cutting part of cutter head 1 are straight type, i.e. yi word pattern.
A kind of embodiment shown in figure 11, the cutting part of cutter head 1 are ball-type.
A kind of embodiment shown in figure 12, the cutting part of cutter head 1 are triangular form.
The method for using of the accurate fixed length of present embodiment cutter head endoscope high frequency incision knife is:
1. need excise position tissue protuberance to focus Submucosa injecting fluid.
2. move incision knife handle slide block cutter head is regained in the insulation outer tube, incision knife gets into digestive tract through the endoscope path way hole, under the supervision of endoscope, must guarantee that the insulation outer tube exposes the endoscope path way far-end.
3. the conductive plug with incision knife links to each other with the electrode socket of high-frequency electrical generation equipment.
4. the operating grip slide block stretches out cutter head, can not continue to advance to slide block.
5. confirm the output parameter of high-frequency electrical generation equipment,, destination organization is excised as normally then starting high-frequency electrical generation equipment.
6. close high-frequency electrical generation equipment after accomplishing, with the electrode socket disconnection of incision knife conductive plug and high-frequency electrical generation equipment.
7. cutter head is taken in the insulation outer tube and is extracted incision knife out.
This utility model provides the accurate fixed length of a kind of cutter head endoscope high frequency incision knife; The method and the approach of concrete this technical scheme of realization are a lot, and the above only is the preferred implementation of this utility model, should be understood that; For those skilled in the art; Under the prerequisite that does not break away from this utility model principle, can also make some improvement and retouching, these improvement and retouching also should be regarded as the protection domain of this utility model.The all available prior art of each ingredient not clear and definite among this utility model embodiment realizes.
Claims (8)
1. the accurate fixed length of cutter head endoscope high frequency incision knife; Comprise that cutter head (1) and tail end are provided with the core bar (5) of handle (8); The part of cutter head (1) is positioned at core bar (5), and another part stretches out core bar (5), and the part that cutter head (1) stretches out core bar (5) is provided with insulation outer tube (3); Core bar (5) is provided with and is used to control the control piece that cutter head (1) moves; It is characterized in that cutter head (1) outer wall that is positioned at said insulation outer tube (3) is provided with fastener (6), the inboard of insulation outer tube (3) is provided with the limited block (2) adaptive with said fastener (6).
2. the accurate fixed length of cutter head according to claim 1 endoscope high frequency incision knife is characterized in that, said fastener (6) is bulk, ring-type or tubulose.
3. the accurate fixed length of cutter head according to claim 1 and 2 endoscope high frequency incision knife is characterized in that said limited block (2) is bulk or ring-type.
4. the accurate fixed length of cutter head according to claim 1 endoscope high frequency incision knife; It is characterized in that; Said control piece is for being arranged on the slide block (4) outside the core bar (5); Core bar (5) is actively plugged in the slide block (4) and can under the drive of handle (8), rotates with respect to slide block (4), and slide block (4) is connected with cutter head (1) and links.
5. according to claim 1 or the accurate fixed length of 4 described cutter heads endoscope high frequency incision knife; It is characterized in that; The end that core bar (5) deviates from handle (8) is provided with conductive plug installation sleeve (9); Be provided with conductive plug (7), power spring (10) in the said conductive plug installation sleeve (9) successively, and conducting ring or conduction steel ball, conductive plug (7), power spring (10) are electrically connected with said cutter head (1) through conducting ring or conduction steel ball.
6. the accurate fixed length of cutter head according to claim 5 endoscope high frequency incision knife is characterized in that said conductive plug installation sleeve (9) is provided with oversheath (12), and the part of said insulated sleeve (3) is positioned at oversheath (12).
7. the accurate fixed length of cutter head according to claim 5 endoscope high frequency incision knife; It is characterized in that; Said conductive plug installation sleeve (9) is provided with the tongue and groove structure with the contact portion of core bar (5), thereby realizes the axial location of conductive plug installation sleeve (9) and core bar (5).
8. according to claim 1 or the accurate fixed length of 4 described cutter heads endoscope high frequency incision knife, it is characterized in that the non-cutting part of said cutter head (1) is provided with insulating barrier, the cutting part of cutter head (1) is L type, straight type, ball-type or multiangular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201238899U CN202515776U (en) | 2012-03-28 | 2012-03-28 | Endoscope high-frequency incision knife with precise fixed length knife head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201238899U CN202515776U (en) | 2012-03-28 | 2012-03-28 | Endoscope high-frequency incision knife with precise fixed length knife head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202515776U true CN202515776U (en) | 2012-11-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201238899U Expired - Fee Related CN202515776U (en) | 2012-03-28 | 2012-03-28 | Endoscope high-frequency incision knife with precise fixed length knife head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202515776U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102579129A (en) * | 2012-03-28 | 2012-07-18 | 刘枫 | High-frequency incision knife with accurate fixed-length knife bit for endoscope |
| CN107638198A (en) * | 2017-09-30 | 2018-01-30 | 四川大学华西医院 | Mucous membrane peels off apparatus under a kind of scope of swallow-tail form cutter head |
| CN107693110A (en) * | 2017-09-30 | 2018-02-16 | 四川大学华西医院 | Mucous membrane stripper under a kind of scope |
-
2012
- 2012-03-28 CN CN2012201238899U patent/CN202515776U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102579129A (en) * | 2012-03-28 | 2012-07-18 | 刘枫 | High-frequency incision knife with accurate fixed-length knife bit for endoscope |
| CN107638198A (en) * | 2017-09-30 | 2018-01-30 | 四川大学华西医院 | Mucous membrane peels off apparatus under a kind of scope of swallow-tail form cutter head |
| CN107693110A (en) * | 2017-09-30 | 2018-02-16 | 四川大学华西医院 | Mucous membrane stripper under a kind of scope |
| CN107693110B (en) * | 2017-09-30 | 2020-09-04 | 四川大学华西医院 | Mucous membrane stripper under endoscope |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Shanghai city Yangpu District Changhai Road No. 168, Department of Gastroenterology Changhai Hospital of Shanghai Patentee after: Liu Feng Patentee after: MICRO-TECH (NANJING) CO., LTD. Address before: Shanghai city Yangpu District Changhai Road No. 168, Department of Gastroenterology Changhai Hospital of Shanghai Patentee before: Liu Feng Patentee before: Nanjing Micro-Tech Co., Ltd. |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170221 Address after: 200000 Shanghai city Yangpu District Changhai Road No. 168, Department of Gastroenterology Changhai Hospital of Shanghai Patentee after: Liu Feng Address before: Shanghai city Yangpu District Changhai Road No. 168, Department of Gastroenterology Changhai Hospital of Shanghai Patentee before: Liu Feng Patentee before: MICRO-TECH (NANJING) CO., LTD. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121107 Termination date: 20180328 |