CN109674498A - A kind of operation spreader tool - Google Patents
A kind of operation spreader tool Download PDFInfo
- Publication number
- CN109674498A CN109674498A CN201910008140.6A CN201910008140A CN109674498A CN 109674498 A CN109674498 A CN 109674498A CN 201910008140 A CN201910008140 A CN 201910008140A CN 109674498 A CN109674498 A CN 109674498A
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- China
- Prior art keywords
- pole
- center
- bar
- driving
- spreader tool
- Prior art date
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- Granted
Links
- 238000001356 surgical procedure Methods 0.000 claims abstract description 11
- 238000003780 insertion Methods 0.000 claims description 12
- 230000037431 insertion Effects 0.000 claims description 12
- 238000005452 bending Methods 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 210000001835 viscera Anatomy 0.000 abstract description 14
- 210000002784 stomach Anatomy 0.000 description 9
- 238000010586 diagram Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 208000005646 Pneumoperitoneum Diseases 0.000 description 3
- 208000027418 Wounds and injury Diseases 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 201000010099 disease Diseases 0.000 description 3
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 3
- 238000002357 laparoscopic surgery Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 208000024172 Cardiovascular disease Diseases 0.000 description 1
- 244000273618 Sphenoclea zeylanica Species 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 208000026106 cerebrovascular disease Diseases 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000002526 effect on cardiovascular system Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003073 embolic effect Effects 0.000 description 1
- 210000003754 fetus Anatomy 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000000968 intestinal effect Effects 0.000 description 1
- 238000007912 intraperitoneal administration Methods 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 238000009828 non-uniform distribution Methods 0.000 description 1
- 230000002980 postoperative effect Effects 0.000 description 1
- 230000002685 pulmonary effect Effects 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000007920 subcutaneous administration Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000002560 therapeutic procedure Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/02—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors
- A61B17/0218—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors for minimally invasive surgery
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/02—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors
- A61B17/0281—Abdominal wall lifters
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change
Abstract
The invention discloses a kind of operation spreader tools.The operation spreader tool include: center-pole (1), more strut bar (2), more connecting rods (3) and driving slider (4), the every first end for strutting bar (2) is hinged to the center-pole (1)；The first end of every connecting rod (3) is hinged to the driving slider (4), and the second end of connecting rod, which is hinged to, described struts bar (2)；Driving slider (4) is slidably socketed on the center-pole (1), movement is strutted and packed up to strut bar (2) described in driving, it is fixedly installed and is provided with the first limit stops (12) on the center-pole (1), the maximum distraction angle of bar (2) is strutted described in the first limit stops (12) limitation.Operation spreader tool structure of the invention is simple and convenient to operate, and can reliably be strutted internal organ chamber etc. in the course of surgery, is convenient for performing the operation.
Description
Technical field
The present invention relates to the field of medical instrument technology, more particularly to a kind of operation spreader tool.
Background technique
It is frequently necessary to strut internal organs or other positions during surgery.For example, laparoscopic surgery is a new development
Invasive methods are therapeutic method of surgery more advanced for current, can treat a plurality of types of diseases.As advanced micro-
Wound technology can be restored rapidly since laparoscopic surgery operation wound is small, bleeding is few, operation receiveing person is postoperative, obtain at present in clinic
To extensive use.
Conventional laparoscopic operation utilizes CO2Pneumoperitoneum technology manufactures surgical procedure space.Due to CO2Pneumoperitoneum is to breathing, circulation
System and Pregnant Fetus have many adverse effects, are not suitable for body condition difference or with cardiovascular and cerebrovascular disease, embolic disease
The patient of disease and pulmonary insufficiency, is developed various stomach wall suspension apparatus exempt from the laparoscopic surgery of pneumoperitoneum.But it is existing
Have exempt from pneumoperitoneum technology using Ke Shi needle penetrate stomach wall carry out stomach wall suspend in midair be easy to patient carry out secondary insult, stomach wall suspend in midair pulling force
Bilateral stomach wall can be made to assemble to centre, intestinal tube is squeezed and concentrated to centre, operative space is caused to become smaller, narrow；When Muscle tensility is larger,
Surgical procedure space but will be obviously reduced, and not only do a 4mm notch because placing subcutaneous steel wire, and stress concentrates on suspending in midair more
On steel wire, it is easy that patient's stomach wall is caused to damage, the operative space of formation is relatively small.
108542441 A of Chinese patent literature CN discloses a kind of umbrella-type laparoscope pneumoperitoneum-free support device.The device is used
It is intraperitoneal in being inserted into, it is strutted by strutting pawl to horizontal position, preceding stomach wall sufficiently is lifted, so that stomach wall and internal viscera
It separates.Position is strutted there is still a need for constantly applying lifting power to lift stomach wall, to increase because even strutting pawl and being maintained at
The manpower that operation needs.Moreover, internal organs itself can not be strutted.
Thus, it is desirable to have a kind of technical solution come overcome or at least mitigate in the drawbacks described above of the prior art at least one
It is a.
Summary of the invention
The purpose of the present invention is to provide a kind of operation spreader tools to lack to overcome or at least mitigate the above-mentioned of the prior art
At least one of fall into.
To achieve the above object, the present invention provides a kind of operation spreader tool, and the operation spreader tool includes: center
Bar, more strut bar, more connecting rods and driving slider,
Described more strut bar and are spaced from each other in the circumferential, and the every first end for strutting bar is hinged to the center-pole,
The every second end for strutting bar is free end；
The first end of every connecting rod is hinged to the driving slider, and the second end of every connecting rod is hinged to correspondence and struts
Bar；
The driving slider is slidably socketed on the center-pole, to strut fortune by strutting bar described in connecting rod driving
It moves or packs up movement, closed on the center-pole at insertion end and be fixedly installed the first limit stops, first limit stops
Gear limits the sliding position of the driving slider, to strut the maximum distraction angle of bar described in limitation.
Preferably, at least two adjacent angular gaps strutted between bar are greater than other and adjacent strut between angular between bar
Gap, biggish angular gap are used as surgical procedure gap.
Preferably, the cross section for strutting bar be inverted U, including support edge and positioned at support edge two sides and perpendicular to
The support edge first connection while and second connection while, wherein the support edge and it is described first connection while, second connection while
Fillet connection, the connecting rod be hinged to accordingly strut bar it is described first connection while and second connection while.
Preferably, the bar that struts is elastic rod, is curved rod in entire length, and arc direction of arching upward is outside.
Preferably, described to strut bar in free end include free end segmental arc, the bending half of the free end segmental arc
Diameter is less than the bending radius of the entire length arc for strutting bar, and the circular arc central angle of the free end segmental arc is greater than etc.
In 90 degree, it is less than or equal to 180 degree.
Preferably, the connecting rod is straight-bar；Or
The connecting rod is S-shaped bar, and the inside circular arc of the first arc sections at first end arches upward, second at second end
The outside circular arc of arc sections arches upward.
Preferably, the operation spreader tool further comprises restraint strap, and the restraint strap struts the second of bar with described
End connection, assists the maximum for strutting bar described in limitation to strut position, wherein and the restraint strap is located at the outside for strutting bar,
And the restraint strap is elastic webbing.
Preferably, the operation spreader tool further includes outer tube, under collapsed state, the center-pole, more strut
Bar, more connecting rods and driving slider are located within the outer tube,
The center-pole includes driving end and insertion end, and the center-pole is provided with arc top cover at its insertion end,
The outside arc of arc top cover arches upward, and the maximum gauge of the arc top cover is greater than the interior diameter of the outer tube,
The operation spreader tool further includes spring and driving nut, and the spring is arranged in described the in the longitudinal direction
Between one limit stops and the driving slider, elastic force is applied to the driving slider, the elastic force makes described strut
Bar is in stowed position；
The driving nut is threadedly coupled with the center-pole, drives the drive for overcoming the elastic force of the spring
Moving slide-bar described to strut the distracted side of bar and move upwards along the center-pole.
Preferably, the driving slider is slidably socketed except the center-pole, under softened state, the center-pole
Driving end is protruded from length except the driving slider and the outer tube, and the driving end of the driving slider is in length
It protrudes from except the outer tube,
The operation spreader tool further includes clamping device, and the clamping device includes the position on center-pole length direction
Relatively-stationary first clamping member and the second clamping piece, wherein described first clamping member is suitable for clamping and release outer tube, described
Second clamping piece is suitable for clamping and discharges the center-pole, and the center-pole is provided with external thread section, the drive at driving end
For dynamic nut driving on the external thread section, the overall diameter of the driving nut is greater than the aperture of the driving slider.
Preferably, the driving slider is slidably socketed within the center-pole, under softened state, the center-pole
Driving end is protruded from length except the outer tube, and center-pole radial dimension at driving end is increased and is provided with interior
Thread segment, the driving nut is with external screw thread and is screwed in the internal thread segment, the diameter on the head of the driving nut
Greater than the aperture of the center-pole；
Multiple axially extending guiding grooves are provided in the focal length of the peripheral wall of the center-pole, the connecting rod passes through
The guiding groove, the guiding groove guide the movement of the connecting rod；
The center-pole is provided with the second limit stops at driving end, and second limit stops limit the center-pole
Depth capacity relative to outer tube insertion.
Operation spreader tool structure of the invention is simple and convenient to operate, and can reliably strut internal organ in the course of surgery
Chamber etc. is convenient for performing the operation.
Detailed description of the invention
Fig. 1 is the schematic diagram of the collapsed state of operation spreader tool according to a first embodiment of the present invention.
Fig. 2 is diagrammatic top view of operation spreader tool shown in Fig. 1 in softened state.
Fig. 3 is diagrammatic top view of the operation spreader tool according to a second embodiment of the present invention in softened state.
Fig. 4 is the schematic cross sectional views for strutting bar of the invention.
Fig. 5 is the schematic diagram of the collapsed state of operation spreader tool according to a second embodiment of the present invention.
Fig. 6 is the schematic diagram of operation spreader tool according to a third embodiment of the present invention.
Fig. 7 is the schematic diagram of operation spreader tool according to a fourth embodiment of the present invention.
Appended drawing reference:
| 1 | Center-pole | 11 | Arc top cover |
| 2 | Strut bar | 12 | First limit stops |
| 3 | Connecting rod | 13 | Second limit stops |
| 4 | Driving slider | 21 | Free end segmental arc |
| 5 | Outer tube | 22 | Support edge |
| 6 | Restraint strap | 23 | First connection side |
| 7 | Surgical procedure gap | 24 | Second connection side |
| 8 | Spring | 31 | First arc sections |
| 9 | Drive nut | 32 | Second arc sections |
Specific embodiment
In the accompanying drawings, same or similar element is indicated using same or similar label or there is same or like function
Element.The embodiment of the present invention is described in detail with reference to the accompanying drawing.
In the description of the present invention, term " center ", " longitudinal direction ", " transverse direction ", "front", "rear", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "top", "bottom" "inner", "outside" is that orientation based on the figure or position are closed
System, is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must have
Specific orientation is constructed and operated in a specific orientation, therefore should not be understood as limiting the scope of the invention.
Referring to Fig. 1, Fig. 2, Fig. 6 and Fig. 7, operation spreader tool of the invention include: center-pole 1, more strut bar 2, more
Root connecting rod 3 and driving slider 4.It should be pointed out that in the present invention, only specifying, " bar " can be solid hopkinson bar,
It is also possible to hollow stem.
Described more strut bar 2 and are spaced from each other in the circumferential, and the every first end (upper end in figure) for strutting bar 2 is hinged
To the center-pole 1, it is specifically hinged to closing at the position of insertion end for center-pole.Every struts the second end of bar 2 (in figure
Lower end) it is free end.Bar 2 is strutted around the rotation of its first end, and struts movement and packs up movement, is achieved in operation needs
Strut bar energy, such as internal organ are strutted in inside.
The first end (upper end in figure) of every connecting rod 3 is hinged to the driving slider 4, and the second of every connecting rod 3
End (lower end in figure) is hinged to correspondence and struts bar 2.It is strutted in bar 2 advantageously, the second end of connecting rod 3 is hinged to correspondence
At section, especially middle section is closed at the position for strutting bar hinged end.Every connecting rod 3 corresponding one struts bar 2 accordingly.
The driving slider 4 is slidably socketed on the center-pole 1, described strutted bar 2 to be driven by connecting rod 3 and is supportted
It opens movement or packs up movement.Driving slider 4 can be slidably socketed within the center-pole 1, can also be slidably socketed described
Except center-pole 1.
It is closed at insertion end on the center-pole 1 and is fixedly installed the first limit stops 12, first limit stops
The sliding position of the 12 limitation driving sliders 4, to strut the maximum distraction angle of bar 2 described in limitation.First backstop it is specific
Position, shape, size etc. can according to need setting, strut the maximum distraction angle of bar 2 i.e. described in limitation as long as can be realized
It can.
More strut bar and can be uniformly distributed in a circumferential direction (referring to fig. 2), can also be with non-uniform Distribution (referring to figure
3).As shown in figure 3, specifically, at least two adjacent angular gaps strutted between bar 2 are adjacent greater than other to be strutted between bar 2
Angular gap, biggish angular gap be used as surgical procedure gap 7.To provide biggish operating space, hand can be convenient for
The progress of art.
Any cross-sectional shape appropriate can be used by strutting bar and connecting rod.Referring to fig. 4, the cross section for strutting bar 2 is
Inverted U, two sides including support edge 22 and positioned at support edge 22 and the perpendicular to the support edge 22 first connection side 23 and the
Two connection sides 24, wherein the support edge 22 and first connection 24 fillets in the 23, second connection connect, the connection
Bar 3 is hinged to first connection for accordingly strutting bar 2 when 23 and second connect 24.Support edge 22 is straight on cross section
Shape advantageously reduces pressure thus, it is possible to preferably provide support force, reduces the pressure to splanchnopleure.
In order to reduce the risk during propping up, reduce maximum pressure when propping up, it is preferable that strutting bar 2 is elastic rod.
In addition, strut bar 2 in entire length as curved rod, and arc direction of arching upward is outside.This is also beneficial to the shape for adapting to internal organs,
Maximum pressure is reduced, the damage to internal organ is avoided.
In order to preferably protect internal organs, strutting bar 2 in free end includes free end segmental arc 21, the free end
The bending radius of segmental arc 21 is less than the bending radius of the entire length arc for strutting bar 2, and the free end segmental arc
21 circular arc central angle is more than or equal to 90 degree, is less than or equal to 180 degree.
It is understood that strutting the curved rod that bar 2 is not limited to diagram, straight-bar may be set to be.This is also in the present invention
Protection scope within.
In the embodiment shown in fig. 1, connecting rod 3 is straight-bar, to have simpler structure.
In the embodiment shown in fig. 1, the connecting rod 3 is S-shaped bar, the first circle at first end (upper end in figure)
The inside circular arc of arc portion 31 arches upward, and the outside circular arc of the second arc sections 31 at second end (lower end in figure) arches upward.To which this can
So that connecting rod 3 has certain elasticity, reduce the distracting force to internal organ, and convenient for storage, can reduce whole device
Overall diameter.
Referring to figs. 2 and 3, the operation spreader tool further comprises restraint strap 6.Restraint strap 6 and the bar 2 of strutting
Second end connection, assists the maximum for strutting bar 2 described in limitation to strut position, wherein the restraint strap 6 struts bar 2 positioned at described
Outside, and the restraint strap 6 be elastic webbing.The setting of restraint strap 6 also helps the angular gap for limiting and respectively strutting between bar.
As shown, operation spreader tool further includes outer tube 5, under collapsed state, the center-pole 1, more strut
Bar 2, more connecting rods 3 and driving slider 4 are located within the outer tube 5.The cross section of outer tube is usually round tube, but this
It invents without being limited thereto.That is, the cross section of outer tube may be other shapes.
Center-pole 1 includes driving end and insertion end.Insertion end is the one end being inserted into internal organs, and driving end is to be located at internal organs
Outside, one end of operation is held by operator or operation instrument.The center-pole 1 is provided with arc top cover at its insertion end
11, the outside arc of the arc top cover 11 arches upward, and the maximum gauge of the arc top cover 11 is greater than the interior straight of the outer tube 5
Diameter, arc top cover 11 can preferably provide protection, avoid injury internal organs inner wall.
Referring to Fig. 6 and Fig. 7, for the ease of limiting the relative position of center-pole and driving slider, operation spreader tool is also wrapped
Include spring 8 and driving nut 9.It can certainly be limited using other devices between center-pole and driving slider, outer tube 5
Relative position.For example, Clamping Center bar and driving slider, outer tube 5 can be distinguished using controlled clamping device, and drive it
Movement.
Spring 8 is arranged in the longitudinal direction between first limit stops 12 and the driving slider 4, to the drive
Moving slide-bar 4 applies elastic force, and the elastic force described to strut bar 2 and be in stowed position.To the case where not operating
Under, so that support rod is in stowed position, convenient for storage.
Driving nut 9 is threadedly coupled with the center-pole 1, drives the drive for overcoming the elastic force of the spring 8
Moving slide-bar 4 described to strut the distracted side of bar 2 and move upwards along the center-pole 1.Driving nut 9 can drive manually
It is dynamic, it can also be with electric drive.Advantageously, being provided with locking double nut to driving nut pairing.
In the embodiment in fig 6, the driving slider 4 is slidably socketed except the center-pole 1.Under softened state,
The driving end of the center-pole 1 is protruded from length except the driving slider 4 and the outer tube 5, the driving slider 4
Driving end protruded from length except the outer tube 5.
In the embodiment in fig 6, the operation spreader tool further includes clamping device (not shown), the clamping device packet
Include the relatively-stationary first clamping member in position and the second clamping piece on center-pole length direction, wherein described first clamping member
Suitable for clamping and discharging outer tube 5, second clamping piece is suitable for clamping and discharges the center-pole 1, and the center-pole 1 is driving
External thread section is provided at moved end, the driving nut 9 is screwed on the external thread section, the overall diameter of the driving nut 9
Greater than the aperture of the driving slider 4.
In the embodiment shown in fig. 7, driving slider 4 is slidably socketed within the center-pole 1.Under softened state,
The driving end of the center-pole 1 is protruded from length except the outer tube 5, the center-pole 1 radial ruler at driving end
It is very little to increase and be provided with internal thread segment., the driving nut 9 is with external screw thread and is screwed in the internal thread segment, the drive
The diameter on the head of dynamic nut 9 is greater than the aperture of the center-pole 1.As shown in fig. 7, being provided on driving nut 9 inwardly protruding
Against apical grafting boss.The height of projection of protrusion can according to need setting.And as needed, the boss also can be set
For groove.In addition it should be pointed out that screw thread can also be arranged in the periphery of center-pole, the driving nut 9 has interior spiral shell
Line, and be screwed on the periphery external screw thread of center-pole.In the case, radial expansion portion can be not provided with for center-pole 1.But
It is that higher requirement is had for the setting position of the second limit stops 13.
It is adapted with above structure, multiple axially extending guiding grooves is provided in the focal length of the peripheral wall of center-pole 1,
The connecting rod 3 passes through the guiding groove, and the guiding groove guides the movement of the connecting rod 3.In order to improve intensity, it is being arranged
At the position of guiding groove, the enlarged diameter of center-pole 1, wall thickness increase.
Referring to Fig. 7, the center-pole 1 is provided with the second limit stops 13, second limit stops 13 at driving end
The depth capacity that limitation center-pole 1 is inserted into relative to the outer tube 5.Position, shape and the size etc. of second limit stops 13
It can according to need setting.
In Fig. 6 and embodiment shown in Fig. 7, the hinged end for strutting bar 2 is located in the cavity of the restriction of arc top cover 11.One
Aspect can save space, improve the compact of whole device；On the other hand, the end face of arc top cover 11 can assist limitation to support
The maximum distraction angle of opening lever 2 improves safety.
Operation spreader tool structure of the invention is simple and convenient to operate, and can reliably strut internal organ in the course of surgery
Chamber etc. is convenient for performing the operation.
Finally it is noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations.This
The those of ordinary skill in field is it is understood that be possible to modify the technical solutions described in the foregoing embodiments or right
Part of technical characteristic is equivalently replaced；These are modified or replaceed, and it does not separate the essence of the corresponding technical solution originally
Invent the spirit and scope of each embodiment technical solution.
Claims (10)
1. a kind of operation spreader tool characterized by comprising center-pole (1), more strut bar (2), more connecting rods (3)
With driving slider (4),
Described more strut bar (2) and are spaced from each other in the circumferential, and the every first end for strutting bar (2) is hinged to the center-pole
(1), the every second end for strutting bar (2) is free end；
The first end of every connecting rod (3) is hinged to the driving slider (4), and the second end of every connecting rod (3) is hinged to pair
Bar (2) should be strutted；
The driving slider (4) is slidably socketed on the center-pole (1), by strutting bar (2) described in connecting rod (3) driving
It struts movement or packs up movement, closed at insertion end on the center-pole (1) and be fixedly installed the first limit stops (12),
First limit stops (12) limit the sliding position of the driving slider (4), to strut the maximum support of bar (2) described in limitation
Angle of release degree.
2. operation spreader tool as described in claim 1, which is characterized in that
At least two adjacent angular gaps strutted between bar (2) are greater than other adjacent angular gaps strutted between bar (2), compared with
Big angular gap is used as surgical procedure gap (7).
3. operation spreader tool as described in claim 1, which is characterized in that the cross section for strutting bar (2) is inverted U,
Including support edge (22) and be located at support edge (22) two sides and perpendicular to the support edge (22) first connect side (23) and
Second connection side (24), wherein the support edge (22) and first connection (24) fillet at (23), the second connection connect
It connects, the connecting rod (3) is hinged to first connection for accordingly strutting bar (2) when (23) and second connect (24).
4. operation spreader tool as described in claim 1, which is characterized in that described strut bar (2) are elastic rod, in whole length
It is curved rod on degree, and arc direction of arching upward is outside.
5. operation spreader tool as claimed in claim 4, which is characterized in that described to strut bar (2) in free end including certainly
By end segmental arc (21), the bending radius of the free end segmental arc (21) is less than the entire length arc for strutting bar (2)
Bending radius, and the circular arc central angle of the free end segmental arc (21) is more than or equal to 90 degree, less than or equal to 180 degree.
6. operation spreader tool as described in claim 1, which is characterized in that
The connecting rod (3) is straight-bar；Or
The connecting rod (3) is S-shaped bar, and inwardly circular arc arches upward the first arc sections (31) at first end, at second end
Circular arc arches upward second arc sections (31) outward.
7. operation spreader tool as described in claim 1, which is characterized in that the operation spreader tool further comprises constraint
Band (6), the restraint strap (6) connect with the second end for strutting bar (2), and the maximum support of bar (2) is strutted described in auxiliary limitation
Open position, wherein the restraint strap (6) is located at the outside for strutting bar (2), and the restraint strap (6) is elastic webbing.
8. such as operation spreader tool of any of claims 1-7, which is characterized in that the operation spreader tool also wraps
Include outer tube (5), under collapsed state, the center-pole (1), more strut bar (2), more connecting rods (3) and driving slider
(4) it is located within the outer tube (5),
The center-pole (1) includes driving end and insertion end, and the center-pole (1) is provided with arc top cover at its insertion end
(11), arc arches upward the arc top cover (11) outward, and the maximum gauge of the arc top cover (11) is greater than the outer tube
(5) interior diameter,
The operation spreader tool further includes spring (8) and driving nut (9), and the spring (8) is arranged in the longitudinal direction
Between first limit stops (12) and the driving slider (4), elastic force, the bullet are applied to the driving slider (4)
Property power described to strut bar (2) and be in stowed position；
The driving nut (9) is threadedly coupled with the center-pole (1), drives for overcoming the elastic force of the spring (8)
The driving slider (4) described to strut bar (2) distracted side and move upwards along the center-pole (1).
9. operation spreader tool as claimed in claim 8, which is characterized in that the driving slider (4) is slidably socketed described
Except center-pole (1), under softened state, the driving end of the center-pole (1) protrudes from the driving slider (4) in length
Except the outer tube (5), the driving end of the driving slider (4) is protruded from length except the outer tube (5),
The operation spreader tool further includes clamping device, the clamping device include on center-pole length direction position it is opposite
Fixed first clamping member and the second clamping piece, wherein described first clamping member is suitable for clamping and release outer tube (5), described
Second clamping piece is suitable for clamping and discharges the center-pole (1), and the center-pole (1) is provided with external thread section at driving end,
The driving nut (9) is screwed on the external thread section, and the overall diameter of driving nut (9) is greater than the driving slider
(4) aperture.
10. operation spreader tool as claimed in claim 8, which is characterized in that the driving slider (4) is slidably socketed described
Within center-pole (1), under softened state, the driving end of the center-pole (1) protruded from length the outer tube (5) it
Outside, the center-pole (1) radial dimension at driving end increases and is provided with internal thread segment, and the driving nut (9) is with outer
It screw thread and is screwed in the internal thread segment, the diameter on the head of driving nut (9) is greater than the hole of the center-pole (1)
Diameter；
Multiple axially extending guiding grooves are provided in the focal length of the peripheral wall of the center-pole (1), the connecting rod (3) is worn
The guiding groove is crossed, the guiding groove guides the movement of the connecting rod (3)；
The center-pole (1) is provided with the second limit stops (13) at driving end, and second limit stops (13) limit institute
State the depth capacity that center-pole (1) is inserted into relative to the outer tube (5).
Priority Applications (1)
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| CN111870391A (en) * | 2020-07-14 | 2020-11-03 | 中国科学院大学宁波华美医院 | Artificial blood vessel ring constriction device |
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| CN109674498B (en) | 2023-11-24 |
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