CN109620490A - A kind of claw type bile duct and pancreas bracket removal equipment - Google Patents
A kind of claw type bile duct and pancreas bracket removal equipment Download PDFInfo
- Publication number
- CN109620490A CN109620490A CN201811541466.7A CN201811541466A CN109620490A CN 109620490 A CN109620490 A CN 109620490A CN 201811541466 A CN201811541466 A CN 201811541466A CN 109620490 A CN109620490 A CN 109620490A
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- Prior art keywords
- chassis
- outer sheath
- claw
- bile duct
- pancreas
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- 210000000013 bile duct Anatomy 0.000 title claims abstract description 47
- 210000000496 pancreas Anatomy 0.000 title claims abstract description 36
- 210000000078 claw Anatomy 0.000 title claims abstract description 32
- 238000009423 ventilation Methods 0.000 claims description 6
- 238000000605 extraction Methods 0.000 claims 9
- 239000007787 solid Substances 0.000 claims 1
- 230000015572 biosynthetic process Effects 0.000 abstract description 5
- 210000003445 biliary tract Anatomy 0.000 description 13
- 238000010586 diagram Methods 0.000 description 11
- 230000000694 effects Effects 0.000 description 8
- 230000009471 action Effects 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 210000000232 gallbladder Anatomy 0.000 description 3
- 210000000941 bile Anatomy 0.000 description 2
- 230000035876 healing Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 210000004185 liver Anatomy 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000006748 scratching Methods 0.000 description 2
- 230000002393 scratching effect Effects 0.000 description 2
- 206010056375 Bile duct obstruction Diseases 0.000 description 1
- 206010008635 Cholestasis Diseases 0.000 description 1
- 206010061902 Pancreatic neoplasm Diseases 0.000 description 1
- 208000031481 Pathologic Constriction Diseases 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000001574 biopsy Methods 0.000 description 1
- 201000011510 cancer Diseases 0.000 description 1
- 208000006990 cholangiocarcinoma Diseases 0.000 description 1
- 238000013189 cholangiography Methods 0.000 description 1
- 208000003167 cholangitis Diseases 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 210000001198 duodenum Anatomy 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000000762 glandular Effects 0.000 description 1
- 201000007270 liver cancer Diseases 0.000 description 1
- 208000014018 liver neoplasm Diseases 0.000 description 1
- 208000015486 malignant pancreatic neoplasm Diseases 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 208000011645 metastatic carcinoma Diseases 0.000 description 1
- 206010061289 metastatic neoplasm Diseases 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002980 postoperative effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000028327 secretion Effects 0.000 description 1
- 208000037804 stenosis Diseases 0.000 description 1
- 230000036262 stenosis Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000001225 therapeutic effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000002054 transplantation Methods 0.000 description 1
- 238000005491 wire drawing Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/95—Instruments specially adapted for placement or removal of stents or stent-grafts
- A61F2/962—Instruments specially adapted for placement or removal of stents or stent-grafts having an outer sleeve
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/95—Instruments specially adapted for placement or removal of stents or stent-grafts
- A61F2002/9528—Instruments specially adapted for placement or removal of stents or stent-grafts for retrieval of stents
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Media Introduction/Drainage Providing Device (AREA)
Abstract
A kind of claw type bile duct and pancreas bracket removal equipment comprising outer sheath, the multijaw structure that can be stretched out, chassis and removable disk, which is characterized in that the multijaw structure setting is in the inside of outer sheath；For the multijaw structure setting on chassis, a ring spring structure is arranged in multijaw structure front end；The mobile control structure in one control chassis of setting on the chassis, a removable disk is arranged in chassis front；The one drawing structure of removable disk center setting, drawing structure pass through chassis center and stretch out from outer sheath rear end；Control structure is stretched out after outer sheath from outer sheath；The connection on multijaw structure and chassis is the mode that is rotatably connected；The perforation passed through for multijaw structure is set in removable disk；Each pawl of multijaw structure is inclined outwardly from chassis, and the multijaw structure of formation becomes larger forwards from chassis；Ring spring structure setting is in claw-type structure front end；Ring spring inside configuration diameter of a circle is less than bracket pipe outside diameter under non-deformed state.
Description
Technical field
The invention belongs to medical instruments fields, and in particular to be a kind of claw type bile duct and pancreas bracket removal equipment.
Background technique
Biliary system have secretion, storage, concentration and biliary function, to bile be discharged into duodenum have it is important
Adjustment effect.By the secondary benign ductal of cholangitis repeatedly or operation on biliary tract is narrow or cholangiocarcinoma, liver cancer, cancer of pancreas and metastatic carcinoma
Etc. Malignent Biliary Obstruction caused by malignant tumours, disease incidence is higher, seriously affects patients ' life quality.
Biliary tract rack is implanted to the better method that stenosis or occlusion position is current treatment obstruction of biliary tract.In complicated gallbladder
During road is rebuild, the application of biliary tract rack still can not be ignored, and indwelling is considered especially in the unsatisfied situation of Biliary reconstruction
Biliary tract rack pipe, biliary tract rack pipe can not only play the role of decompression drainage, support, the healing conducive to biliary tract, while also just
In observing bile situation and the effects of postoperative cholangiography.There is research to confirm that stand tube of the indwelling Jing Guo previous anastomotic is to avoid
One very important factor of biliary complications can play the role of reducing biliary complications, especially in complicated, difficulty
It is acted in biggish Biliary reconstruction significant.During liver transfer operation Biliary reconstruction, for biliary tract condition, good patient can not be stayed
Biliary tract rack pipe is set, but for the Biliary reconstruction of some complexity, different types of biliary tract can be selected according to situation different in art
Stand tube reduces biliary complications after orthotopic liver transplantation in favor of the healing of biliary tract.
After bracket is placed in a period of time, after obstruction of bile duct disappearance or biliary tract recovery, need to take bracket from implanting
Out, the bracket being placed in also tends to there are problems that vacillating, and causes bracket taking-up to have difficulties, currently used technological means is
It is taken out using snare or biopsy forceps, but position of having an effect is parallel to bracket longitudinal direction more, there is difficulty of having an effect, and then take out
Difficult problem.
How much technical solution of the existing technology is by a kind of from row's property gallbladder from row's property mode, such as 201610346785.7
Pipe holder；In addition there are also the therapeutic modality of setting balance spring, e.g., cholangio-stent is can be recycled in 201620595874.0 integral types；
Above-mentioned technical proposal is all a kind of design convenient for taking-up by improving bracket itself, and usually used in existing clinical operation
It is common catheter holder, the prior art lacks the technical solution being configured to removal equipment.
The present invention is directed to problem that is difficult and taking out bracket difficulty of having an effect in the prior art, provides a kind of claw type bile duct and pancreas
Rami glandulares frame removal equipment.
Summary of the invention
In order to overcome the problems, such as to have an effect in the prior art difficult and take out bracket difficulty, the present invention provides a kind of claw type bile duct
And pancreas bracket removal equipment.
A kind of claw type bile duct and pancreas bracket removal equipment comprising outer sheath, the multijaw structure that can be stretched out, chassis and can
Mobile disk, which is characterized in that the multijaw structure setting is in the inside of outer sheath；The multijaw structure setting is more on chassis
A ring spring structure is arranged in pawl structure front end；The mobile control structure in one control chassis of setting on the chassis, before chassis
One removable disk of side's setting；The one drawing structure of removable disk center setting, drawing structure pass through chassis center from outer sheath
Rear end is stretched out；Control structure is stretched out after outer sheath from outer sheath；The connection on multijaw structure and chassis is the side of being rotatably connected
Formula；The perforation passed through for multijaw structure is set in removable disk；Each pawl of multijaw structure is inclined outwardly from chassis, formation
Multijaw structure becomes larger forwards from chassis；Ring spring structure setting is in claw-type structure front end；It is annular under non-deformed state
Diameter of a circle is less than bracket pipe outside diameter inside spring structure.Before use, removable disk is arranged to guarantee the smallest three-jaw size
At larger-size three-jaw locations of structures, after reaching designated position, control structure is pushed by recession outer sheath or forward,
Stretch out multijaw structure from outer sheath, rear end is pulled back by pulling structure by the position of control structure control three-jaw, made three-jaw
Structure becomes large-sized, and front end is opened, and ring spring is made to form the elastic force of retraction, to front end auger Spread plane dimension to greater than outside stand tube
When diameter；By control control structure and drawing structure, multijaw structure is moved down, covers multijaw structure on the outside of stand tube, it is rear to unclamp
Structure is pulled, the ring spring of front end can then encircle multijaw to stent outer by elastic force, and led to extract and.
Further, described 3-6 pawl of multijaw structure setting；Wherein it is preferably provided with 3 pawls.
Further, the chassis is provided in round chassis, and circular base plate edge is arranged 3 notches, is respectively set in notch
One connection structure, connection structure are connect with three-jaw structure, and three-jaw structure can relatively rotate in junction；Three-jaw structure passes through
Relatively rotate the opening and closure for realizing three-jaw.
Further, the connection structure is set as cylindrical connecting column, and the centre of the notch is arranged in the connecting column
Position, the connecting column and chassis integrally connected；The setting of cylindrical connecting column rotates convenient for three-jaw structure.
Further, the three-jaw structure includes the connection ring of integrally connected, tilting section and with hook segment, the connection ring setting
In the periphery of connecting column, the diameter of connection ring is big compared with the diameter of connecting column, and connection ring relatively rotates by shaft of connecting column；
Band hook segment is the inclined structure in portion slightly inwards；Ring spring structure setting is in band hook segment front.Such setting with hook segment can be with
Guarantee big grasping force when grasping.
Further, the tilting section and the main body with hook segment are set as rectangular slab, and the setting of rectangular slab has three-jaw structure
There are stronger stability and grasping force.
Further, the control structure on the chassis is set as control-rod.
Further, the control-rod main body is set as the round and smooth rectangular configuration in edge, the control-rod free end setting one
L shape control-rod handle, control-rod handle stretch out on the outside of outer sheath；It can be with mobile chassis, thus mobile by push-and-pull control-rod
The position of three-jaw structure.
Further, the removable disk is provided in round removable disk, and it is logical that 3 ellipses are arranged in round removable disk edge
Hole, the three-jaw of three-jaw structure are each passed through 3 ellipse holes, the rectangular slab of the size of the ellipse hole compared with three-jaw structure
The size of cross-sectional area is big；It can control the opening and closure of three-jaw structure by mobile removable disk.
Further, the removable disk and the round stretch hole of chassis center setting one, interior one drawing of setting of the stretch hole
Structure, drawing structure one end are fixed in removable disk, and the other end passes through chassis center and stretches out outside outer sheath；It is pulled by drawing
Structure, may be implemented the movement of removable disk, to realize the opening and closure of three-jaw structure.
Further, the drawing structure setting is drawing silk, and drawing silk is tied in removable disk.By pulling backward
The recession of removable disk may be implemented in wire drawing, opens three-jaw structure, by unclamping drawing silk after reaching on the outside of stand tube, in ring
Stand tube is encircled under the effect of shape spring structure elastic force, and stand tube is taken out.
Alternatively, the drawing structure is drawing item；Pull item and removable disk integrally connected or the drawing item close to
Block section is arranged in the position of the over and under of removable disk, and an arc-shaped drawing is arranged in one end that drawing item stretches out outer sheath
Ring；Drawing item can be fixed in removable disk by setting block section, so that removable disk be made to follow drawing item mobile, be led
The setting of pull ring pulls drawing item convenient for operator.During taking out stand tube, drawing item Forward be may further ensure that
The pressure of front end contact surface reduces and slips risk.
Further, the block section is set as cylindrical block section, the diameter of the diameter of cylindrical block section compared with stretch hole
Greatly；Such setting guarantees that drawing item is fixedly secured in removable disk, to guarantee that pulling item drives removable disk mobile.
Further, the ring spring structure and three-jaw structure welding；Such setting can make three-jaw structure not outer
Certain angle can be opened under the action of power, so as to use lesser power drawing drawing silk that can sufficiently open three-jaw knot
Structure.
Further, location structure is set in the outer sheath front end outer side, the location structure is around outer sheath front end
Lateral wall；Location structure the position of outer sheath can be fixed, and preventing outer sheath from movement occurs leads to the inclined of action direction
Difference.
Further, the location structure includes positioning gasbag, snorkel, inflatable structure；The positioning gasbag setting is outside
On the lateral wall of sheath front end；Described snorkel one end and positioning gasbag integrally connected, the snorkel other end stretch out outside outer sheath
Side is inflated to positioning gasbag by inflatable structure, is affixed on gas cell outer wall in bile duct wall, plays outer sheath being fixed on bile duct
The purpose at middle part.
Further, inflatable structure is set as gas cell, and the snorkel nozzle for stretching out outer sheath one end integrally connects with gas cell
It connects, switch valve is set between gas cell and snorkel；Setting switch valve can close switch valve after the completion of inflation, anti-fastening
Gas in the air bag of position sheds, and opens switch valve after taking out bracket, releases the gas in positioning gasbag, then leads outer sheath
It is external to pull out patient.
Further, the outer sheath is set as cylindrical, massive hose, and 3 channels, including drawing are arranged in outer sheath
Channel, control-rod channel and ventilation tube passage；Such setting can guarantee that pulling item and control-rod follows the synchronous fortune of outer sheath
Dynamic and bending, guarantees the control to front chassis and removable disk.
Further, one section of hollow pipe is arranged in the front end of the outer sheath, and the length of hollow pipe is not less than three-jaw structure division
Total length, hollow pipe can accommodate three-jaw structure；Three-jaw structure is located in hollow pipe before opening, avoids scratching bile duct.
In use, the internal outer sheath with three-jaw structure is sent into patient's body, after reaching bracket position, squeeze
Air bag makes positioning gasbag expansion heave and be tightly attached on bile duct inner wall, so that the position of outer sheath be fixed, then to being pushed forward
Control-rod on dynamic chassis is moved to three-jaw structure outside outer sheath, rear to make removable disk backward by pulling drawing structure backward
The mobile opening angle for being increased three-jaw structure with this is made front end opening dimension be greater than bracket outer diameter and is socketed in stent outer, after
Drawing structure is unclamped, three-jaw then can be tightly attached to stent outer by elastic force, finally pull outer sheath by the ring spring of front end
Patient is external out.
Compared with prior art, technical solution of the present invention is arranged for bracket removal equipment, the technical program
Clever structure can accurately take out bracket, and instrument cost of manufacture is cheap, can be widely used to promote in clinic.
Detailed description of the invention
Fig. 1 is the overall structure that a kind of claw type bile duct of the present invention and pancreas bracket removal equipment multijaw structure stretch out outer sheath
Schematic diagram；
Fig. 2 is the partial enlargement structural representation of a kind of claw type bile duct of the present invention and pancreas bracket removal equipment unused state
Figure；
Fig. 3 is the part section enlarged structure of a kind of claw type bile duct of the present invention and pancreas bracket removal equipment unused state
Schematic diagram；
Fig. 4 is the partial enlargement that a kind of claw type bile duct of the present invention and pancreas bracket removal equipment multijaw structure stretch out outer sheath
Structural schematic diagram；
Fig. 5 is the part section that a kind of claw type bile duct of the present invention and pancreas bracket removal equipment multijaw structure stretch out outer sheath
Enlarged structure schematic diagram；
Fig. 6 is the multijaw structure of a kind of claw type bile duct of the present invention and pancreas bracket removal equipment with drawing item and control-rod
Enlarged structure schematic diagram；
Fig. 7 is a kind of claw type bile duct of the present invention and pancreas bracket removal equipment without drawing item and the multijaw knot of control-rod
Structure enlarged structure schematic diagram；
Fig. 8 is the control-rod of a kind of claw type bile duct of the present invention and pancreas bracket removal equipment operator's control terminal, drawing item
And the enlarged structure schematic diagram of gas cell；
Fig. 9 be a kind of claw type bile duct of the present invention and pancreas bracket removal equipment using when multijaw structure be softened the office of state
Portion's enlarged structure schematic diagram；
Figure 10 is a kind of putting for the multijaw structure that claw type bile duct and pancreas bracket removal equipment of the invention are in softened state
Big structure schematic diagram.
Figure 11 is a kind of claw type bile duct of the present invention and the signal of pancreas bracket removal equipment outer sheath part section enlarged structure
Figure；
Figure 12 is the enlarged structure schematic diagram on a kind of claw type bile duct of the present invention and pancreas bracket removal equipment chassis；
Figure 13 is that the enlarged structure of a kind of claw type bile duct and the single pawl of pancreas bracket removal equipment multijaw structure of the invention is shown
It is intended to；
Figure 14 is the section of a kind of claw type bile duct of the present invention and pancreas bracket removal equipment multijaw structure and chassis junction
Enlarged structure schematic diagram.
In figure, 1, outer sheath；11, a channel is pulled；12, control-rod channel；13, ventilation tube passage；14, hollow pipe；2,
Multijaw structure；21, connection ring；22, tilting section；23, band hook segment；24, ring spring structure；3, chassis；31, connecting column；32, it controls
Bar processed；321, L shape control-rod handle；4, removable disk；41, round stretch hole；42, ellipse hole；43, item is pulled；
431, block section；432, arc-shaped stretch ring；5, positioning gasbag；51, snorkel；52, gas cell；521, switch valve.
Specific embodiment
Illustrate embodiments of the present invention below by way of particular specific embodiment, those skilled in the art can be by this explanation
Other advantages and efficacy of the present invention can be easily understood for content disclosed by book.The present invention can also be by addition different specific
Embodiment is embodied or practiced, and the various details in this specification can also not carried on the back based on different viewpoints and application
From carrying out various modifications or alterations under spirit of the invention.It should be noted that in the absence of conflict, following embodiment and reality
The feature applied in example can be combined with each other.
A kind of claw type bile duct of embodiment 1 and pancreas bracket removal equipment
A kind of claw type bile duct and pancreas bracket removal equipment comprising outer sheath 1, the multijaw structure 2 that can be stretched out, chassis 3
And removable disk 4, which is characterized in that the inside of outer sheath 1 is arranged in the multijaw structure 2；The multijaw structure 2 is arranged the bottom of at
On disk 3, a ring spring structure 24 is arranged in 2 front end of multijaw structure；The mobile control in one control chassis 3 of setting on the chassis 3
A removable disk 4 is arranged in front of chassis 3 in structure processed；4 center setting of removable disk, the one drawing structure, drawing structure pass through
3 center of chassis is stretched out from 1 rear end of outer sheath；Control structure is stretched out after outer sheath 1 from outer sheath 1；Multijaw structure 2 and chassis
3 connection is the mode that is rotatably connected；The perforation passed through for multijaw structure 2 is set in removable disk 4；Each of multijaw structure 2
Pawl is inclined outwardly from chassis 3, and the multijaw structure 2 of formation becomes larger forwards from chassis 3；The setting of ring spring structure 24 exists
Claw-type structure front end；24 inside diameter of a circle of ring spring structure is less than bracket pipe outside diameter under non-deformed state.Before use, to protect
The smallest three-jaw size is demonstrate,proved, removable disk 4 is set at larger-size three-jaw locations of structures, after reaching designated position,
By recession outer sheath 1 or forward control structure is pushed, stretches out multijaw structure 2 from outer sheath 1, rear end is by control structure control
The position of three-jaw processed is pulled back by pulling structure, makes becoming large-sized for three-jaw structure, and front end is opened, and forms back ring spring
The elastic force of contracting, when front end auger Spread plane dimension to when being greater than bracket pipe outside diameter；By control control structure and drawing structure, multijaw is moved down
Structure 2 makes 2 sets of multijaw structure on the outside of stand tube, and rear to unclamp drawing structure, the ring spring of front end then can will be more by elastic force
Dog collar is embraced to stent outer, and is led to extract and.
The multijaw structure 2 is preferably provided with 3 pawls.
The chassis 3 is provided in round chassis 3, and 3 edge of circular base plate is arranged 3 notches, a company is respectively set in notch
Binding structure, connection structure are connect with three-jaw structure, and three-jaw structure can relatively rotate in junction；Three-jaw structure passes through opposite
The opening and closure of three-jaw are realized in rotation.
The connection structure is set as cylindrical connecting column 31, and the interposition of the notch is arranged in the connecting column 31
It sets, the connecting column 31 and 3 integrally connected of chassis；The setting of cylindrical connecting column 31 rotates convenient for three-jaw structure.
The three-jaw structure includes the connection ring 21 of integrally connected, tilting section 22 and with hook segment 23, and the connection ring 21 is set
It sets in the periphery of connecting column 31, the diameter of connection ring 21 is big compared with the diameter of connecting column 31, and connection ring 21 is shaft with connecting column 31
It relatively rotates；Band hook segment 23 is the inclined structure in portion slightly inwards；The setting of ring spring structure 24 is in band 23 front of hook segment.This
Setting of the kind with hook segment 23 can guarantee big grasping force when grasping.
The tilting section 22 and the main body with hook segment 23 are set as rectangular slab, the setting of rectangular slab make three-jaw structure have compared with
Strong stability and grasping force.
Control structure on the chassis 3 is set as control-rod 32.
32 main body of control-rod is set as the round and smooth rectangular configuration in edge, and one " L " is arranged in 32 free end of control-rod
Shape control-rod handle 321,32 handle of control-rod stretch out 1 outside of outer sheath；By push-and-pull control-rod 32 can with mobile chassis 3, from
And move the position of three-jaw structure.
The removable disk 4 is provided in round removable disk 4, and 3 ellipse holes are arranged in round 4 edge of removable disk
42, the three-jaw of three-jaw structure is each passed through 3 ellipse holes 42, the square of the size of the ellipse hole 42 compared with three-jaw structure
The size of shape plate cross-sectional area is big；It can control the opening and closure of three-jaw structure by mobile removable disk 4.
The removable disk 4 and the round stretch hole 41 of 3 center setting of chassis one, the interior one drawing knot of setting of the stretch hole
Structure, drawing structure one end are fixed in removable disk 4, and the other end passes through 3 center of chassis and stretches out outside outer sheath 1；By leading
Pull-up structure, may be implemented the movement of removable disk 4, to realize the opening and closure of three-jaw structure.
The drawing structure setting is shape drawing silk, and drawing silk is tied in removable disk 4.By pulling drawing silk backward
The recession that removable disk 4 may be implemented opens three-jaw structure, by unclamping drawing silk after reaching on the outside of stand tube, in annular
Stand tube is encircled under the effect of 24 elastic force of spring structure, and stand tube is taken out.
The ring spring structure 24 and three-jaw structure welding；Such setting can make three-jaw structure in the work of not external force
Certain angle can be opened, with lower so as to use lesser power drawing drawing silk that can sufficiently open three-jaw structure.
In use, the internal outer sheath 1 with three-jaw structure is sent into patient's body, after reaching bracket position, to
It is preceding that the control-rod 32 on chassis 3 is pushed to be moved to three-jaw structure outside outer sheath 1, made afterwards by drawing drawing structure backward removable
Moving plate 4 moves backward the opening angle for increasing three-jaw structure with this, so that front end opening dimension is greater than bracket outer diameter and is socketed in branch
Rear to unclamp drawing structure on the outside of frame, three-jaw then can be tightly attached to stent outer by elastic force by the ring spring of front end, finally will be outer
It is external that sheath 1 is drawn out patient.
A kind of claw type bile duct of embodiment 2 and pancreas bracket removal equipment
A kind of claw type bile duct and pancreas bracket removal equipment comprising outer sheath 1, the multijaw structure 2 that can be stretched out, chassis 3
And removable disk 4, which is characterized in that the inside of outer sheath 1 is arranged in the multijaw structure 2；The multijaw structure 2 is arranged the bottom of at
On disk 3, a ring spring structure 24 is arranged in 2 front end of multijaw structure；The mobile control in one control chassis 3 of setting on the chassis 3
A removable disk 4 is arranged in front of chassis 3 in structure processed；4 center setting of removable disk, the one drawing structure, drawing structure pass through
3 center of chassis is stretched out from 1 rear end of outer sheath；Control structure is stretched out after outer sheath 1 from outer sheath 1；Multijaw structure 2 and chassis
3 connection is the mode that is rotatably connected；The perforation passed through for multijaw structure 2 is set in removable disk 4；Each of multijaw structure 2
Pawl is inclined outwardly from chassis 3, and the multijaw structure 2 of formation becomes larger forwards from chassis 3；The setting of ring spring structure 24 exists
Claw-type structure front end；24 inside diameter of a circle of ring spring structure is less than bracket pipe outside diameter under non-deformed state.Before use, to protect
The smallest three-jaw size is demonstrate,proved, removable disk 4 is set at larger-size three-jaw locations of structures, after reaching designated position,
By recession outer sheath 1 or forward control structure is pushed, stretches out multijaw structure 2 from outer sheath 1, rear end is by control structure control
The position of three-jaw processed is pulled back by pulling structure, makes becoming large-sized for three-jaw structure, and front end is opened, and forms back ring spring
The elastic force of contracting, when front end auger Spread plane dimension to when being greater than bracket pipe outside diameter；By control control structure and drawing structure, multijaw is moved down
Structure 2 makes 2 sets of multijaw structure on the outside of stand tube, and rear to unclamp drawing structure, the ring spring of front end then can will be more by elastic force
Dog collar is embraced to stent outer, and is led to extract and.
The multijaw structure 2 is set as 3 pawls.
The chassis 3 is provided in round chassis 3, and 3 edge of circular base plate is arranged 3 notches, a company is respectively set in notch
Binding structure, connection structure are connect with three-jaw structure, and three-jaw structure can relatively rotate in junction；Three-jaw structure passes through opposite
The opening and closure of three-jaw are realized in rotation.
The connection structure is set as cylindrical connecting column 31, and the interposition of the notch is arranged in the connecting column 31
It sets, the connecting column 31 and 3 integrally connected of chassis；The setting of cylindrical connecting column 31 rotates convenient for three-jaw structure.
The three-jaw structure includes the connection ring 21 of integrally connected, tilting section 22 and with hook segment 23, and the connection ring 21 is set
It sets in the periphery of connecting column 31, the diameter of connection ring 21 is big compared with the diameter of connecting column 31, and connection ring 21 is shaft with connecting column 31
It relatively rotates；Band hook segment 23 is the inclined structure in portion slightly inwards；The setting of ring spring structure 24 is in band 23 front of hook segment.This
Setting of the kind with hook segment 23 can guarantee big grasping force when grasping.
The tilting section 22 and the main body with hook segment 23 are set as rectangular slab, the setting of rectangular slab make three-jaw structure have compared with
Strong stability and grasping force.
Control structure on the chassis 3 is set as control-rod 32.
32 main body of control-rod is set as the round and smooth rectangular configuration in edge, and one " L " is arranged in 32 free end of control-rod
Shape control-rod handle 321,32 handle of control-rod stretch out 1 outside of outer sheath；By push-and-pull control-rod 32 can with mobile chassis 3, from
And move the position of three-jaw structure.
The removable disk 4 is provided in round removable disk 4, and 3 ellipse holes are arranged in round 4 edge of removable disk
42, the three-jaw of three-jaw structure is each passed through 3 ellipse holes 42, the square of the size of the ellipse hole 42 compared with three-jaw structure
The size of shape plate cross-sectional area is big；It can control the opening and closure of three-jaw structure by mobile removable disk 4.
The removable disk 4 and the round stretch hole 41 of 3 center setting of chassis one, the interior one drawing knot of setting of the stretch hole
Structure, drawing structure one end are fixed in removable disk 4, and the other end passes through 3 center of chassis and stretches out outside outer sheath 1；By leading
Pull-up structure, may be implemented the movement of removable disk 4, to realize the opening and closure of three-jaw structure.
The drawing structure is drawing item 43；It pulls item 43 and 4 integrally connected of removable disk or the drawing item 43 is tight
Block section 431 is arranged in the position of the over and under of adjacent removable disk 4, and drawing item 43 stretches out one circle of one end setting of outer sheath 1
Arc stretch ring 432；Drawing item 43 can be fixed in removable disk 4 by setting block section 431, to make removable disk
4 follow drawing item 43 mobile, and the setting of stretch ring pulls drawing item 43 convenient for operator.During taking out stand tube, lead
Tie rod 43 moves forward, and may further ensure that the pressure of front end contact surface, reduces and slips risk.
The block section 431 is set as cylindrical block section 431, and the diameter of cylindrical block section 431 is straight compared with stretch hole
Diameter is big；Such setting guarantees that drawing item 43 is fixedly secured in removable disk 4, to guarantee that pulling item 43 drives removable disk 4
It is mobile.
The ring spring structure 24 and three-jaw structure welding；Such setting can make three-jaw structure in the work of not external force
Certain angle can be opened, with lower so as to use lesser power drawing drawing silk that can sufficiently open three-jaw structure.
In 1 front end outer side of outer sheath, location structure, outside of the location structure around 1 front end of outer sheath are set
Wall；Location structure the position of outer sheath 1 can be fixed, and prevent outer sheath 1 from the mobile deviation for leading to action direction occurs.
The location structure includes positioning gasbag 5, snorkel 51, inflatable structure；The positioning gasbag 5 is arranged in outer sheath
On the lateral wall of 1 front end；Described 51 one end of snorkel and 5 integrally connected of positioning gasbag, 51 other end of snorkel stretch out outer sheath 1
Outside is inflated to positioning gasbag 5 by inflatable structure, is affixed on 52 outer wall of gas cell in bile duct wall, played outer sheath 1 is fixed
Purpose in the middle part of bile duct.
Inflatable structure is set as gas cell 52, and 51 nozzle of snorkel for stretching out 1 one end of outer sheath integrally connects with gas cell 52
It connects, switch valve 521 is set between gas cell 52 and snorkel 51；Switch valve 521 is arranged can be after the completion of inflation by switch valve
521 close, and prevent the gas in positioning gasbag 5 from shedding, and open switch valve 521 after taking out bracket, release in positioning gasbag 5
Then it is external to be drawn out patient by gas for outer sheath 1.
In use, the internal outer sheath 1 with three-jaw structure is sent into patient's body, after reaching bracket position, squeeze
Air bag is pressed, the expansion of positioning gasbag 5 is heaved and is tightly attached on bile duct inner wall, so that the position of outer sheath 1 is fixed, then to
It is preceding that the control-rod 32 on chassis 3 is pushed to be moved to three-jaw structure outside outer sheath 1, made afterwards by drawing drawing structure backward removable
Moving plate 4 moves backward the opening angle for increasing three-jaw structure with this, so that front end opening dimension is greater than bracket outer diameter and is socketed in branch
Rear to unclamp drawing structure on the outside of frame, three-jaw then can be tightly attached to stent outer by elastic force by the ring spring of front end, finally will be outer
It is external that sheath 1 is drawn out patient.
A kind of claw type bile duct of embodiment 3 and pancreas bracket removal equipment
A kind of claw type bile duct and pancreas bracket removal equipment comprising outer sheath 1, the multijaw structure 2 that can be stretched out, chassis 3
And removable disk 4, which is characterized in that the inside of outer sheath 1 is arranged in the multijaw structure 2；The multijaw structure 2 is arranged the bottom of at
On disk 3, a ring spring structure 24 is arranged in 2 front end of multijaw structure；The mobile control in one control chassis 3 of setting on the chassis 3
A removable disk 4 is arranged in front of chassis 3 in structure processed；4 center setting of removable disk, the one drawing structure, drawing structure pass through
3 center of chassis is stretched out from 1 rear end of outer sheath；Control structure is stretched out after outer sheath 1 from outer sheath 1；Multijaw structure 2 and chassis
3 connection is the mode that is rotatably connected；The perforation passed through for multijaw structure 2 is set in removable disk 4；Each of multijaw structure 2
Pawl is inclined outwardly from chassis 3, and the multijaw structure 2 of formation becomes larger forwards from chassis 3；The setting of ring spring structure 24 exists
Claw-type structure front end；24 inside diameter of a circle of ring spring structure is less than bracket pipe outside diameter under non-deformed state.Before use, to protect
The smallest three-jaw size is demonstrate,proved, removable disk 4 is set at larger-size three-jaw locations of structures, after reaching designated position,
By recession outer sheath 1 or forward control structure is pushed, stretches out multijaw structure 2 from outer sheath 1, rear end is by control structure control
The position of three-jaw processed is pulled back by pulling structure, makes becoming large-sized for three-jaw structure, and front end is opened, and forms back ring spring
The elastic force of contracting, when front end auger Spread plane dimension to when being greater than bracket pipe outside diameter；By control control structure and drawing structure, multijaw is moved down
Structure 2 makes 2 sets of multijaw structure on the outside of stand tube, and rear to unclamp drawing structure, the ring spring of front end then can will be more by elastic force
Dog collar is embraced to stent outer, and is led to extract and.
The multijaw structure 2 is set as 3 pawls.
The chassis 3 is provided in round chassis 3, and 3 edge of circular base plate is arranged 3 notches, a company is respectively set in notch
Binding structure, connection structure are connect with three-jaw structure, and three-jaw structure can relatively rotate in junction；Three-jaw structure passes through opposite
The opening and closure of three-jaw are realized in rotation.
The connection structure is set as cylindrical connecting column 31, and the interposition of the notch is arranged in the connecting column 31
It sets, the connecting column 31 and 3 integrally connected of chassis；The setting of cylindrical connecting column 31 rotates convenient for three-jaw structure.
The three-jaw structure includes the connection ring 21 of integrally connected, tilting section 22 and with hook segment 23, and the connection ring 21 is set
It sets in the periphery of connecting column 31, the diameter of connection ring 21 is big compared with the diameter of connecting column 31, and connection ring 21 is shaft with connecting column 31
It relatively rotates；Band hook segment 23 is the inclined structure in portion slightly inwards；The setting of ring spring structure 24 is in band 23 front of hook segment.This
Setting of the kind with hook segment 23 can guarantee big grasping force when grasping.
The tilting section 22 and the main body with hook segment 23 are set as rectangular slab, the setting of rectangular slab make three-jaw structure have compared with
Strong stability and grasping force.
Control structure on the chassis 3 is set as control-rod 32.
32 main body of control-rod is set as the round and smooth rectangular configuration in edge, and one " L " is arranged in 32 free end of control-rod
Shape control-rod handle 321,32 handle of control-rod stretch out 1 outside of outer sheath；By push-and-pull control-rod 32 can with mobile chassis 3, from
And move the position of three-jaw structure.
The removable disk 4 is provided in round removable disk 4, and 3 ellipse holes are arranged in round 4 edge of removable disk
42, the three-jaw of three-jaw structure is each passed through 3 ellipse holes 42, the square of the size of the ellipse hole 42 compared with three-jaw structure
The size of shape plate cross-sectional area is big；It can control the opening and closure of three-jaw structure by mobile removable disk 4.
The removable disk 4 and the round stretch hole 41 of 3 center setting of chassis one, the interior one drawing knot of setting of the stretch hole
Structure, drawing structure one end are fixed in removable disk 4, and the other end passes through 3 center of chassis and stretches out outside outer sheath 1；By leading
Pull-up structure, may be implemented the movement of removable disk 4, to realize the opening and closure of three-jaw structure.
The drawing structure is drawing item 43；It pulls item 43 and 4 integrally connected of removable disk or the drawing item 43 is tight
Block section 431 is arranged in the position of the over and under of adjacent removable disk 4, and drawing item 43 stretches out one circle of one end setting of outer sheath 1
Arc stretch ring 432；Drawing item 43 can be fixed in removable disk 4 by setting block section 431, to make removable disk
4 follow drawing item 43 mobile, and the setting of stretch ring pulls drawing item 43 convenient for operator.During taking out stand tube, lead
Tie rod 43 moves forward, and may further ensure that the pressure of front end contact surface, reduces and slips risk.
The block section 431 is set as cylindrical block section 431, and the diameter of cylindrical block section 431 is straight compared with stretch hole
Diameter is big；Such setting guarantees that drawing item 43 is fixedly secured in removable disk 4, to guarantee that pulling item 43 drives removable disk 4
It is mobile.
The ring spring structure 24 and three-jaw structure welding；Such setting can make three-jaw structure in the work of not external force
Certain angle can be opened, with lower so as to use lesser power drawing drawing silk that can sufficiently open three-jaw structure.
In 1 front end outer side of outer sheath, location structure, outside of the location structure around 1 front end of outer sheath are set
Wall；Location structure the position of outer sheath 1 can be fixed, and prevent outer sheath 1 from the mobile deviation for leading to action direction occurs.
The location structure includes positioning gasbag 5, snorkel 51, inflatable structure；The positioning gasbag 5 is arranged in outer sheath
On the lateral wall of 1 front end；Described 51 one end of snorkel and 5 integrally connected of positioning gasbag, 51 other end of snorkel stretch out outer sheath 1
Outside is inflated to positioning gasbag 5 by inflatable structure, is affixed on 52 outer wall of gas cell in bile duct wall, played outer sheath 1 is fixed
Purpose in the middle part of bile duct.
Inflatable structure is set as gas cell 52, and 51 nozzle of snorkel for stretching out 1 one end of outer sheath integrally connects with gas cell 52
It connects, switch valve 521 is set between gas cell 52 and snorkel 51；Switch valve 521 is arranged can be after the completion of inflation by switch valve
521 close, and prevent the gas in positioning gasbag 5 from shedding, and open switch valve 521 after taking out bracket, release in positioning gasbag 5
Then it is external to be drawn out patient by gas for outer sheath 1.
The outer sheath 1 is set as cylindrical, massive hose, and 3 channels are arranged in outer sheath 1, including drawing item 43 leads to
51 channel 13 of road 11,32 channel 12 of control-rod and snorkel；It is outer that such setting can guarantee that drawing item 43 and control-rod 32 follow
Sheath 1 is moved synchronously and is bent, and guarantees the control to front chassis 3 and removable disk 4.
One section of hollow pipe 14 is arranged in the front end of the outer sheath 1, and the length of hollow pipe 14 is not less than three-jaw structure division
Total length, hollow pipe 14 can accommodate three-jaw structure；Three-jaw structure is located at before opening in hollow pipe 14, avoids scratching gallbladder
Pipe.
In use, the internal outer sheath 1 with three-jaw structure is sent into patient's body, after reaching bracket position, squeeze
Air bag is pressed, the expansion of positioning gasbag 5 is heaved and is tightly attached on bile duct inner wall, so that the position of outer sheath 1 is fixed, then to
It is preceding that the control-rod 32 on chassis 3 is pushed to be moved to three-jaw structure out of hollow pipe 14 outside outer sheath 1, it is rear by leading backward
Pull-up structure makes removable disk 4 move backward the opening angle for increasing three-jaw structure with this, is greater than front end opening dimension outside bracket
Diameter is simultaneously socketed in stent outer, rear to unclamp drawing structure, and three-jaw then can be tightly attached to bracket by elastic force by the ring spring of front end
It is external to be finally drawn out patient by outside for outer sheath 1.
The explanation of above-described embodiment is only intended to understand the present invention.It should be pointed out that for those of ordinary skill in the art
For, without departing from the principle of the present invention, several improvement can also be carried out to the present invention, these improvement will also fall into this
In invention scope of protection of the claims.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811541466.7A CN109620490B (en) | 2018-12-17 | 2018-12-17 | A claw-shaped bile duct and pancreas stent extraction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811541466.7A CN109620490B (en) | 2018-12-17 | 2018-12-17 | A claw-shaped bile duct and pancreas stent extraction device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109620490A true CN109620490A (en) | 2019-04-16 |
| CN109620490B CN109620490B (en) | 2020-08-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811541466.7A Active CN109620490B (en) | 2018-12-17 | 2018-12-17 | A claw-shaped bile duct and pancreas stent extraction device |
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| CN (1) | CN109620490B (en) |
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| CN109620490B (en) | 2020-08-14 |
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