CN207755345U - A kind of the variable-diameter sheath assembly and puncture outfit of the straight selection structure of band - Google Patents
A kind of the variable-diameter sheath assembly and puncture outfit of the straight selection structure of band Download PDFInfo
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- CN207755345U CN207755345U CN201720635409.XU CN201720635409U CN207755345U CN 207755345 U CN207755345 U CN 207755345U CN 201720635409 U CN201720635409 U CN 201720635409U CN 207755345 U CN207755345 U CN 207755345U
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- casing
- seal assembly
- valve
- sheath assembly
- driving
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- 238000007789 sealing Methods 0.000 claims description 20
- 230000008961 swelling Effects 0.000 claims description 6
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- 238000002324 minimally invasive surgery Methods 0.000 description 3
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- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 210000000683 abdominal cavity Anatomy 0.000 description 2
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Landscapes
- Surgical Instruments (AREA)
Abstract
The utility model is related to a kind of variable-diameter sheath assembly of the straight selection structure of band and puncture outfits, including the first seal assembly and the second seal assembly, first seal assembly and the second seal assembly are connected and fixed, first seal assembly includes reducing casing tube component, lower housing, lower cover, the lower cover and lower housing are fixedly clamped the reducing casing tube component；The reducing casing tube component includes the membrane casing for dividing valve casing described in radially movable 3 points of valve casings and package；Described point of valve casing arranges in circular ring type along the longitudinal axis and forms the hollow channel for accommodating surgical instrument disengaging with the membrane casing；The reducing casing tube component further includes skewback driving mechanism, divides valve casing radially to do the linear motion close to the longitudinal axis or the linear motion far from the longitudinal axis described in the skewback driving mechanism driving.
Description
Technical field
The utility model is related to Minimally Invasive Surgery instrument more particularly to a kind of puncture outfit structures.
Background technology
Puncture outfit is in a kind of Minimally Invasive Surgery（Especially hard tube endoscope-assistant surgery）, for establishing the artificial channel into body cavity
Surgical instrument.Usually it is made of sheath assembly and puncture needle.Its clinical general occupation mode is：First cut on patient skin
Osculum is opened, then puncture needle is run through into sheath assembly, however penetrates stomach wall through skin opening together and enters body cavity.Once into body
Puncture needle is removed after chamber, leaves the channel that sheath assembly passes in and out body cavity as instrument.
In hard tube endoscope-assistant surgery, especially in laparoscopic surgery, generally use pneumoperitoneum apparatus is to the lasting perfusion of abdominal cavity of patients
Gas（Such as carbon dioxide gas）And maintain stable air pressure（About 13 ~ 15mmHg）, to obtain enough surgical procedure spaces.
Sheath assembly is usually by casing, shell, diaphragm seal（Also known as instrument seal）With zero sealing（Also known as automatic-sealed）Composition.The set
Pipe penetrates outside body cavity to body cavity, and the channel of body cavity is passed in and out as instrument.The shell connects casing, zero sealing and diaphragm seal
It is connected into a sealing system.Zero sealing is generally not provided the sealing for insertion instrument, and is closed automatically when instrument is removed
It closes and forms sealing.The diaphragm seal banding instrument and forms sealing when instrument is inserted into.
In a kind of typical gall-bladder endoscopic surgery, usually 4 puncture channels, i.e. 2 small internal diameters are established in patient's stomach wall
Sheath assembly（Usual 5mm）With 2 large diameter sheath assemblies（Usual 10mm）.Usually enter patient via small internal diameter sheath assembly
Internal instrument is only completed auxiliary operation；One of large diameter sheath assembly is as endoscope path way；And another large diameter
The main thoroughfare that sheath assembly is performed the operation as doctor.Main thoroughfare described herein, about 80% time apply 5mm instruments；About
20% time applies other major diameter instruments；And 5mm instruments need frequent switching with major diameter instrument in performing the operation.Using minor diameter
Appliance time longest, sealing reliability are more important；Often it is the critical stage in operation using when major diameter instrument（Such as blood
Pipe is closed and tissue suture）, switch convenience and operating comfort be more important.
As laparoscopic surgery is carried out extensively in gynaecology and division of gastroenterology field, the type of operation is more and more abundant, for
The demand of puncture outfit also highlights diversification.Such as it needs to be inserted into patient's body by puncture outfit in a kind of typical gut surgery
The stapler of 15mm, the however usually main thoroughfare is 10mm or 12mm puncture outfits needs additionally to establish wearing for 15mm
Transfixation road.Such as it needs to establish the puncture channel of 15mm in a kind of typical gynecological surgery convenient for taking out the uterus group cut down
It knits, however usually the main thoroughfare is 10mm or 12mm puncture outfits, needs the puncture channel for additionally establishing a 15mm.It is aforementioned
In two kinds of surgical scenes, if puncture channel diameter can be in 10mm（12mm）Easily switch to 15mm diameters, it is identical to be inserted into
Device carries out coincideing or taking out larger diseased organ（Tissue）, then additional puncture channel can be reduced, the damage for patient is reduced.
Up to the present, there are no the puncture outfits of this type.
Utility model content
In order to solve the problems, such as the one or more of background technology, the utility model propose a kind of straight selection structure of band can
Variable diameters sheath assembly, including the first seal assembly and the second seal assembly, first seal assembly and the second seal assembly
It is connected and fixed, wherein first seal assembly includes reducing casing tube component, lower housing, lower cover, the lower cover and lower casing
Body is fixedly clamped the reducing casing tube component；The reducing casing tube component includes radially movable 3 points of valve casings and packet
Wrap up in the membrane casing for dividing valve casing；Described point of valve casing, which is arranged in circular ring type along the longitudinal axis and formed with the membrane casing, to be held
The hollow channel of surgical instrument of receiving disengaging；The reducing casing tube component further includes skewback driving mechanism, the skewback driving mechanism
Valve casing is divided radially to do the linear motion close to the longitudinal axis or the linear motion far from the longitudinal axis described in driving.
In another implementation of the utility model, wherein it is described divide valve casing proximally arrive distal end successively include point
Valve proximal end divides valve tube body, divides valve boot proximal end；Divide valve tube body described in the membrane casing package, and exposes and divide valve casing
Distally.
In another implementation of the utility model, wherein the reducing casing tube component includes original state and swells
State：Described that valve tube body is divided to form the lateral cross section with basic annulus under the original state, basic internal radius is D1；
It is described to swell under state, it is described that valve tube body is divided to move radially away from the longitudinal axis, the lateral cross section with the annulus that swells is formed, swell circle
Ring internal diameter is D2, and D2>D1.
In another implementation of the utility model, wherein the skewback driving mechanism includes and divides valve proximal end
The casing driving being connected and fixed, drive link drive platform and resetting spring；Described sleeve pipe driving comprising radial guide rail and its
The guiding skewback of proximal end；The resetting spring is radially disposed in the guide rail and reversely compresses the guide rail, and then pushes institute
It is close to y direction to state guide rail；The drive link makes to drive while the drive link axial linear movement with skewback cooperation is oriented to
Action-oriented skewback simultaneously drives guide rail radial alignment to move.
In another implementation of the utility model, wherein the driving platform includes with the instrument for allowing instrument to come in and go out
The torus of through-hole, the torus include the driving platform sliding slot coordinated with guide rail, and the driving platform sliding slot is axial etc. along through-hole
Set up separately and set, the driving platform sliding slot limits guide rail and radially moves along a straight line along through-hole；The torus also includes quantity and institute
The first consistent guide groove of driving platform sliding slot is stated, platform sliding slot, first guide groove are driven described in the first guide groove unicom
Drive link is limited in axial direction to move.
In another implementation of the utility model, wherein the drive link includes down-pressed pole and the distal end of its proximal end
Slip yoke, the down-pressed pole is through the lower cover and exposes lower cover, and pulley is arranged in the slip yoke；Axial straight line fortune
The dynamic pulley pushes the guiding skewback radially to move along a straight line.
In another implementation of the utility model, wherein second seal assembly includes cover board, the cover board packet
Containing distal face and distally face is arranged circumferentially avoid holes；Symbol Warning Mark, the lower cover is arranged in the shell of the cover board
The setting of outer rim homonymy is respectively used to the second identifier of the first identifier and the state that swells of instruction original state；The original state
Under, the symbol Warning Mark corresponds to first identifier, and down-pressed pole is set in the avoid holes of the cover board.
In another implementation of the utility model, wherein it is corresponding to remove the second seal assembly in the initial state,
Second seal assembly is connected and fixed with the first seal assembly by quick locking structure by rotation 180 degree again, the symbol Warning Mark
Corresponding second identifier, the down-pressed pole are pushed by the distal face of the cover board and drive link are driven axially to be moved by proximate
Dynamic, pulley is transported by proximate along the straight line for dividing valve casing radially to do the separate longitudinal axis described in guiding surface axial movement driving
It is dynamic, thus by the reducing casing tube switch between components to the state of swelling.
In another implementation of the utility model, wherein first seal assembly also includes seal cap, described close
The axle sleeve of sealing cap and the lower cover is adhesively fixed and wraps up down-pressed pole, under original state, the seal cap and evacuation interporal lacuna
Cooperation.
The further object of the utility model proposes that a kind of puncture outfit including above-mentioned sheath assembly, the puncture outfit also wrap
Include the puncture needle through sheath assembly.
Description of the drawings
In order to more fully understand the essence of the utility model, it is described in detail below in conjunction with attached drawing, wherein：
Fig. 1 is a kind of abdomen puncture position simulation schematic diagram of typical laparoscopic surgery；
Fig. 2 is the stereoscopic schematic diagram of the utility model embodiment sheath assembly；
Fig. 3 is the three-dimensional partial sectional view of Fig. 2 described sleeve pipe components；
Fig. 4 is the exploded view of the second seal assembly described in Fig. 2；
Fig. 5 is the sectional view after seal assembly assembly described in Fig. 4；
Fig. 6 is the first seal assembly stereoscopic schematic diagram described in Fig. 3；
Fig. 7 is the exploded view of the first seal assembly described in Fig. 6；
Fig. 8 is the exploded view of reducing casing tube component shown in Fig. 7；
Fig. 9 is the stereoscopic schematic diagram of press mechanism shown in Fig. 8；
Figure 10 is the stereoscopic schematic diagram of driving platform shown in Fig. 8；
Figure 11 is the decomposition diagram for dividing valve casing shown in Fig. 8；
Figure 12 is the partial sectional view of the original state of reducing casing tube component shown in Fig. 8；
Figure 13 is that reducing casing tube component shown in Fig. 8 swells the partial sectional view of state；
The stereoscopic schematic diagram of lower housing shown in Figure 14 Fig. 7
Reducing casing tube component shown in Figure 15 Fig. 7 is packed into the schematic diagram of lower housing；
Figure 16 is the stereoscopic schematic diagram of lower cover shown in Fig. 7；
Figure 17 is the another side stereoscopic schematic diagram of lower cover shown in Figure 16；
Figure 18 is the three-dimensional partial sectional view of the first seal assembly shown in Fig. 3；
Figure 19 is that sheath assembly shown in Fig. 2 is in original state schematic diagram；
Figure 20 is the partial sectional view of initial state variable shown in Figure 19；
Figure 21 is 21-21 sectional views shown in Figure 20；
Figure 22 is that sheath assembly shown in Fig. 2 is in the status diagram that swells；
Figure 23 be swell shown in Figure 22 state change partial sectional view；
Figure 24 is 24-24 sectional views shown in Figure 23；
Figure 25 is the another sectional view of the first seal assembly original state shown in Figure 20；
Figure 26 is that the first seal assembly shown in Figure 23 swells another sectional view of state；
In all views, identical label indicates equivalent part or component.
Specific implementation mode
Disclosed herein is the embodiments of the present invention, it should be understood, however, that disclosed embodiment is only this reality
With novel example, the utility model can be realized by different modes.Therefore, this disclosure be not to be construed for
It is restrictive, but only as the basis of claim, and it is how new using this practicality as introduction those skilled in the art
The basis of type.
With reference to figure 1-3, for convenience of stating, the side of follow-up all Proximity operation persons is defined as proximal end, and far from operator
One side is defined as distal end, and the central axis for defining sheath assembly 10 is the longitudinal axis 1000, and the direction of follow-up all substantially parallel longitudinal axis claims
For axial direction, follow-up all directions for being approximately perpendicular to the longitudinal axis are known as laterally, crossing the longitudinal axis 1000 and being known as diameter perpendicular to the direction of the longitudinal axis
To.
As shown in Figure 1, the scene that gynaecology and division of gastroenterology field are performed the operation in foregoing background is depicted, 4 puncture outfits 1
（2,3,4）It respectively penetrates in patient abdominal cavity 6, coincide or take out larger diseased organ when needing to carry out wound using stapler 5
（Tissue）When, it usually needs the sheath assembly of 15mm is operated, and Minimally Invasive Surgery operation how long, the casing of 10mm
Component can meet requirement completely.It should be appreciated by those skilled in the art in order to reduce the wound size of patient and subtract
Few additional puncture channel, if puncture channel diameter can be in 10mm（12mm）Easily switch to 15mm diameters, it can be great
Operative doctor is facilitated to operate and reduce the damage for patient.
The overall structure of the utility model first embodiment puncture outfit is illustrated in detail in Fig. 2-24.As illustrated in figs. 2 through 8, a kind of
Typical puncture outfit includes 50 (not shown) of puncture needle and sheath assembly 10.Sheath assembly 10 has open proximal end 292 and opens
Boot proximal end 377.In the typical application of one kind, puncture needle 50 runs through sheath assembly 10, is then worn together through skin opening
Entire stomach wall enters body cavity thoroughly.Once into body cavity, puncture needle 50 is removed and leaves sheath assembly 10 passes in and out body as instrument
The channel of chamber.The proximal end 292 is in patient's body in the patient distal end 377.A kind of preferred sheath assembly
10, the first seal assembly 11 and the second seal assembly 12 can be divided into.The card of the card slot 139 and the component 12 of the component 11
Hook 262 cooperation fastenings.The cooperation of the hook 262 and card slot 139 is the quick locking structure that singlehanded can quickly split.This mainly for
Facilitate the tissue or foreign matter for taking out patient's body when operation.There are many realize for fast lock connection between the component 11 and component 12
Mode.In addition to the structure of the present embodiment displaying, threaded connection, rotary buckle or other quick locking structures also can be used.It may be selected
, the component 11 and component 12 can be designed to the structure that can not quickly split.
Fig. 3, Fig. 7-8 depict the composition and assembly relation of the first seal assembly 11.For the convenience of description, subsequently by reducing
Sheath assembly is in the state of non-reducing（I.e. casing 307 is closed state）For original state, reducing casing tube component reducing is defined
State afterwards（I.e. casing 307 is the state that swells）For the state of swelling.First seal assembly 11 includes the reducing through boot proximal end 377
Sheath assembly 300, Duckbill seal 107, upper fixed ring 106, lower cover 104, lower housing 103, lower fixed ring 102 and seal cap
105, the reducing casing tube component 300 for realizing casing diameter change in size.
The casing 307 of the reducing casing tube component 300 is set in membrane casing 101.300 quilt of reducing casing tube component
Lower cover 104 and lower housing 103 are in axial direction fixed.The lower cover 104 has the inner wall 148 of support Duckbill seal.Duck
The flange 176 of mouth sealing 107 is sandwiched between the inner wall 148 and upper fixed ring 106.Fixed ring 106 and lower cover
The modes such as there are many fixed forms between 104, and interference fit can be used, and ultrasonic bonding is glued, and buckle is fixed.This implementation
Fixed ring 106 described in example engages interference fit with lower cover 104 using annular, and this interference fit makes at Duckbill seal 107
In compressive state.The reducing casing tube component 300, inner wall 148, Duckbill seal 107 and intake valve（It is not shown）It collectively constitutes
First chamber 13, the first chamber 13 form gas handling system channel, while being also the channel of instrument disengaging body cavity.This implementation
In example, the Duckbill seal 107 is single seam, but can also use other kinds of closure valve, including tongue type valve, stitches duckbilled more
Valve.When external device runs through the Duckbill seal 107, duckbilled 173 can open, but it is generally not provided relative to described
Instrument is fully sealed.When the instrument is removed, the duckbilled 173 is closed automatically, to prevent the stream in first chamber 13
Body is revealed to external.
Fig. 3-5 depicts the composition and assembly relation of the second seal assembly 12.Sealing membrane modules 208 are clipped in 206 He of cover board
Between upper shell 209.The proximal end 282 of the sealing membrane modules 208 be fixed on the cover board 206 inner ring 266 and it is described on
Between the inner ring 296 of shell 209.There are many fixed forms between the upper shell 209 and cover board 206, and interference can be used and match
It closes, ultrasonic welding, is glued, buckle the modes such as fixed.The shell for the upper shell 209 that the present embodiment displaying connection type is
It is fixed by ultrasonic bonding between 291 and the shell 261 of the cover board 206.This fixation makes the sealing membrane modules 208
Proximal end 282 be in compressive state.The centre bore 263 of the cover board 206, inner ring 266 and sealing membrane modules 208 together constitute
Second chamber 14.Symbol Warning Mark 268 is arranged in the shell 261（267）, symbol Warning Mark 268 in the utility model
（267）It is indicated for triangular form, the apex angle of intermediate cam plays indicative function towards distal end.The cover board 206 further includes distal face
269, for the setting of the distal face 269 opening towards the avoid holes 264 of distal end, the avoid holes 264 are blind hole, the avoid holes
264 along the circumferential substantially decile of the cover board 206 setting 3, for avoiding seal cap 105.
Fig. 4-5 depicts the composition and assembly relation of sealing membrane modules 208.The sealing membrane modules 208 include diaphragm seal
280 and protective device 281.The protective device 281 is embedded in the diaphragm seal 280.The size of the protective device 281 and
Configuration design is interfered at the inside that may be mounted at the diaphragm seal 280 without being generated with the diaphragm seal 280.The protection dress
It sets 281 to move together or float with diaphragm seal 280, the centre for protecting the diaphragm seal 280 protects it from insertion
It perforates or tears caused by the sharp edge of surgical instrument.The diaphragm seal 280 is usually by natural rubber, silica gel, isoprene rubber etc.
Elastic material is made；The protective device 281 is usually by thermoplastic elastomer (TPE), polypropylene, polyethylene, gather the rigidity such as record ethylene or
Semi-rigid material is made.
Fig. 6-13 depicts the composition and assembly relation of the first seal assembly 11.First seal assembly 11 includes the reducing
Sheath assembly 300, Duckbill seal 107, upper fixed ring 106, lower cover 104, lower housing 103, lower fixed ring 102 and seal cap
105.The reducing casing tube component 300 is fixedly clamped by the lower cover 104 and lower housing 103.The reducing casing tube component 300
Including membrane casing 101 is fixedly clamped by membrane casing 101, the lower housing 103 and lower fixed ring 102.
As shown in fig. 7, the membrane casing 101 includes the body distal end 111 of its distal end, the tube body proximal end 114 of proximal end,
The tube body 110 of changeover portion 112 and the connection pipe body distal end 111 and changeover portion 112 that extend to distal end with tube body proximal end 114.Institute
It states tube body proximal end 114 and extends laterally outward out U-shaped revolving body 113.The revolving body 113 includes consolidating for U-shaped revolving body bottom
Determine face 115.The diameter of tube body proximal end 114 is more than the diameter of tube body 110.It will be appreciated by those skilled in the art that in order to as possible
The outer diameter space for the slender casing 307 that reducing casing tube component 300 is formed is occupied less, while ensureing preferable intensity, membrane casing
101 thin-film materials that elasticity may be used are blow molded, and realization, which swells and reduces automatically, to restore.113 thickness of the membrane casing
Usually take 0.1mm to 0.5mm.Another optional technical solution, as shown by figures 25-26, membrane casing 101a is using flexible
Thin-film material is blow molded, such as PET, PP, the thin-film materials such as PC.During reducing, the membrane casing 101a will not be sent out
Slight flexible deformation only occurs for raw flexible deformation, and reducing increases part, relies primarily on and is compressed in point 346 seam crossing of valve tube body
Fold unfold to be formed.
As shown in Fig. 7-8 and Figure 11, the reducing casing tube component 300 further includes skewback driving mechanism 308 and capable assembling group
3 valves of packaged tube 307 it is roughly the same divide valve casing 304.The skewback driving mechanism 308 divides valve casing described in being used to drive
304 laterally move along a straight line.Described point of valve casing 304 includes to divide valve tube body 346.Described point of valve tube body 346 further includes a point valve casing
Distally 347.3 shapes are identical and the described of decile setting divides valve boot proximal end 347 and described valve tube body 346 divided to separately constitute set
Pipe distal end 377 and tube body 376.Section is annulus shape to the tube body 376 in the initial state, and is limited by membrane casing 101
It is fixed.As shown in Figure 8 and Figure 11, the skewback driving mechanism 308 includes to be driven with the casing for dividing valve proximal end 348 to be connected and fixed
301, described sleeve pipe driving 301 includes the guide rail 313 that cross sectional shape is approximately " I " fonts, and the guide rail 313 includes for pacifying
The blind hole 313a of resetting spring 302 is filled, the blind hole 313a openings are laterally outward, inside along 313 outside of guide rail of " I " fonts
Side is laterally arranged.The proximal end 315 of the guide rail 313（I.e. at the top of I-shaped）Including the boss 314 and sealed wall that proximally extend
315a, the boss 314 include to be oriented to skewback 314a, and the proximal end 315 is plane.The distal end of the guide rail 313（That is I-shaped bottom
Portion）Including being drivingly connected part 311 with the casing for dividing valve proximal end 348 to be connected and fixed.The guide rail 313 also includes by guide rail
313 distal ends are laterally inward the cam 312 of extension, and its development length is without departing from the wall thickness of the tube body 346, casing driving 301
Casing be drivingly connected part 311 and divide valve proximal end 348 to be connected and fixed welding may be used, the fixed forms such as be bonded.
Described point of valve tube body 346 is by foil material by punching press one-pass molding or by cutting a round metal tube
It is cut into three parts.It should be appreciated by those skilled in the art that the metal material for dividing valve tube body 346 to use includes having well to prolong
The stainless steel alloy material of malleability and higher shaping strength, while other suitable punching presses and the alloy material for meeting bio-compatibility
It can also be applied to the utility model.In order to ensure the intensity for dividing valve tube body 346, the present embodiment is using 0.8mm thickness
Stainless steel material progress is one time punching molded, it should be appreciated by those skilled in the art that in order to increase intensity, it is described to divide valve tube body
346 can with the reinforcing rib of punch forming convex or increase its thickness be also the utility model protection range.Described sleeve pipe
Driving 301 is molded using POM material injections, and metal material die cast can also be used.
As illustrated in figs. 8-11, the skewback driving mechanism 308 also includes drive link 303, resetting spring 302 and driving
Platform 306.The resetting spring 302 is in compressive state, and in the initial state, the resetting spring 302 and membrane casing
101 will divide together valve casing 304 limit and Formation cross-section as the tube body 376 of complete torus.
As shown in figs. 9 and 12, the drive link 303 includes stepped pole socket 330（The visual angles Figure 12）, the pole socket
330 extend proximally out down-pressed pole 331, and two cantilevers 333 are extended in the distal end 335 of the pole socket 330 to distal end both sides
（335）, the distal end 335 and cantilever 333（334）Slip yoke 337, the cantilever 333 are formed together（334）Distal end is respectively to cunning
337 inside of moving fork extends shaft 333a（334a）.The drive link 303 also includes the pulley 338 limited by slip yoke 337, institute
It includes axis hole 339 to state pulley 338.The pulley 338 is fitted into slip yoke 337 and can be around axis 333a（334a）Rotation.Along axis
333a vertical direction, the diameter of the pulley 338 are more than the width dimensions of slip yoke 337.
Such as Fig. 8, shown in Figure 10, the driving platform 306 include by for by instrument through-hole 361 and outer wall 367 and
Torus 360 defined by it, the through-hole 361 are limited by hole wall 362.The torus 360 also includes outside extending transversely through
3 I-shaped sliding slots 363 that wall 367 arrives hole wall 362 and coordinates respectively with guide rail 313, the sliding slot 363 are axial etc. along through-hole 361
Distribution sets its center extended line and intersects at 361 center of through-hole.The guide rail 313 and the sliding slot 363 are in the present invention
I-shaped guide rail or sliding slot cooperation can also be that the modes such as the cooperation of T-type guide rail sliding chute or the cooperation of dovetail groove profile guide rail sliding chute are matched
It closes.Sliding slot 363 described in the second guide groove of 360 proximal end of torus setting 365 and unicom.Second guide groove 365 includes to close
The evagination rectangular opening 368 at end, the inner wall 368a that the rectangular opening 368 closes on 361 side of through-hole extend laterally outward out guide plate
366a, the guide plate 366a proximally extend and exceed rectangular opening 368.The rectangular opening 368 is far from 361 side of through-hole
Wall 368b guide plate 366b, the guide plate 366b arranged symmetrically and guide plate 366a the first guide grooves 366 of composition, described first
366 opening size of guide groove is less than the opening size of the second guide groove 365.The pulley 338 of the drive link 303 is limited at
In two guide grooves 365, the slip yoke 337 is limited in the first guide groove 366, makes drive link 303 that can only axially move,
It cannot lateral or rotational movement.The outer wall 367 extends and the boss for preventing the driving platform 306 from rotating laterally outside
364, it will be understood to those skilled in the art that in order to which the driving platform 306 to be fixed in lower housing 103, can also use
Welding, bonding, the prior arts such as screw connection are fixed.
Such as the process that swells for depicting reducing casing tube component 300 that Figure 12-13 is careful.When original state, the reset bullet
The bounce of spring 302 will be divided valve casing 304 to limit and be formed by dividing the section that valve tube body 346 forms as the pipe of complete circle ring body
Body 376.Pulley 338 in the slip yoke 337 of the drive link 303, which is in, to be divided on the guiding skewback 314a of valve casing 304.
When needing reducing, by pushing the down-pressed pole 331 of drive link 303, the slip yoke 337 of drive link 303 is led along first
To 366 axial downward movement of slot, the pulley 338 of the drive link 303 along divide the guiding skewback 314a of valve casing 304 axial to
It is lower to move and generated on being oriented to skewback 314a component laterally outward, divide the guide rail 313 of valve casing 304 along described described in driving
The sliding slot 363 of driving platform 306 is displaced outwardly, and when the pulley 338 slides into guide rail proximal end 315, completes reducing casing tube component
300 by original state reducing to the state of swelling reducing.The drive of down-pressed pole 331 by pushing drive link 303 divides valve casing 304
Radial to be moved to far from axis direction, the range of movement is substantially equal to the difference R of variable radius.If foregoing teachings are mentioned, lead to
Normal operative doctor needs the sheath assembly in 10mm -15mm to switch over, in order to meet this needs, variable radius difference R >=
2.5mm becomes radius 7.5mm from casing radius from 5mm, the R=2.5mm of variable radius difference described in the present embodiment.Ability
The technical staff in domain is it is contemplated that pulley disclosed by the utility model and the straight selection structure mode for being oriented to skewback cooperation.One kind can
Pulley is substituted for the driving skewback with guiding skewback cooperation by the technical solution of choosing, forms driving skewback driving guiding skewback
Straight selection structure mode, effect and pulley are roughly the same with the straight selection structure mode for being oriented to skewback cooperation.
Such as Fig. 7, shown in Figure 14-15, the lower housing 103 includes the hole that can penetrate 300 casing 307 of reducing casing tube component
131, outer housing 130 and limit it is described driving platform 306 inner wall 135.The hole 131 is limited due to hole wall 132.The lower casing
Body 103 also includes several mounting holes 133, and the mounting hole 133 and the fixed column 149 of lower cover 104 are interference fitted the change
Diameter sheath assembly 300 is fixedly clamped.Extend connection wall 138 between the inner wall 135 and outer housing 130.By the reducing casing tube
Component 300 is encased in lower housing 103, and the outer wall 367 of the driving platform 306, which is inserted into the inner wall 135 of lower housing 103, to be formed
Interference fit, and wall 138 limits boss 364 together with outer housing 130, makes the driving platform 306 will not when by rotary force
Rotation.After the reducing casing tube component 300 is packed into lower housing 103, resetting spring 302 is limited by inner wall 135 and is in compressive state.
Such as Fig. 7, shown in Figure 16-18, lower cover 104 include for by instrument through-hole 141 and limit through-hole 141
Inner wall 148, and by the axially extending 133 matched fixed column 149 of mounting hole with lower housing 103 in the distal end of lower cover 104, and
The two forms interference fit.There are many fixed forms between the lower cover 104 and lower housing 103, and ultrasonic bond also can be used
It connects, is glued, buckle the modes such as fixed.148 proximal end of the inner wall extends laterally outward out sealed wall 140, the sealed wall 140 with
The outer housing 130 of the lower housing 103 forms seam allowance sealing.The outer rim homonymy setting of the sealed wall 140 is used to indicate initial
State（MIN）First identifier 144 and swell state（MAX）Second identifier 145.The lower cover 104 also includes by sealing
The distal end of the wall 142 that wall 140 extends to distal end, the wall 142 and inner wall 148 compresses reducing casing tube component 300 together.Under described
Cover board 104 also includes the axis hole 147 through sealed wall 140, the down-pressed pole of the axis hole 147 position and reducing casing tube component 300
331 correspond to.As shown in figure 17, the axis hole 147 extends axle sleeve 147 by 140 proximal end of the sealed wall, and the axle sleeve 147 is used
In installation seal cap 105.The seal cap 105 is made of rubber or silica gel material, and is adhesively fixed with axle sleeve 147.It is described
The height of seal cap 105 is more than the height of axle sleeve 147.As shown in figure 18, under original state, 105 top inner wall of seal cap and axis
It covers 147 proximal ends not contact, and forms gap, the clearance distance is substantially equal to the distance of the pushing of down-pressed pole 331.The reset bullet
Spring 302 and membrane casing 101 will divide together valve casing 304 limit and Formation cross-section as the tube body 376 of complete torus.Institute
331 proximal end of down-pressed pole for stating drive link 303 is contacted with 105 top inner wall of seal cap.
As shown in Fig. 7 and Figure 18, the lower fixed ring 102 includes the hole 122 slightly larger than 101 tube body 110 of membrane casing, with
And it is interference fitted the fixed column 121 being connected and fixed with lower housing 103.The lower fixed ring 102 further includes being extended by 122 proximal end of hole
Boss 123.The boss 123 is when lower housing 103 and lower fixed ring 102 are fixed, the fixation for the membrane casing 103 that is fixedly clamped
Face 115.
As the big process of variable radial expanding of described sleeve pipe component 10 is illustrated in detail in Figure 13-14 and Figure 19-24.Such as Figure 12, Figure 19-
Shown in 21, specifically, under original state；Second seal assembly 12 is connect with the first seal assembly 11 by snap solid
It is fixed.The sign 267 of second seal assembly 12 is in the original state mark of the first seal assembly 11（MIN）144
It sets.At this point, the avoid holes 264 of second seal assembly 12 form clearance fit, the drive link with 105 top of seal cap
303 do not stress in the axial direction, and the pulley 338 in 303 slip yoke 337 of the drive link, which is in, divides the guiding of valve casing 304 oblique
On block 314a.Stating the bounce of resetting spring 302 simultaneously will divide valve casing 304 laterally inwardly to push away, the membrane casing 101
Tube body 110 wrap casing 307 tube body 376 formed with complete circle section.
Such as Figure 13-14, shown in Figure 22-24, when needing to adjust reducing, second seal assembly 12 and first is sealed
Component 11 detaches and rotates 180 degree and snap connection second seal assembly 12 with the first seal assembly 11 again.It is described
The sign 268 of second seal assembly 12 is in the status indicator that swells of the first seal assembly 11（MAX）145 positions.At this point,
105 top of seal cap at 269 compression seal cap of distal face, 105 top of second seal assembly 12, compression connects with axle sleeve 147
It touches；The down-pressed pole 331 of drive link 303 is pushed by compression seal cap 105, the slip yoke 337 of drive link 303 is led along first
To the axial distal movement of slot 366, the pulley 338 of the drive link 303 is along the guiding skewback for dividing 304 guide rail 313 of valve casing
314a axial directions distal movement simultaneously generates component laterally outward on being oriented to skewback 314a, divides valve described in the component driving
The guide rail 313 of casing 304 along the driving platform 306 363 laterally outward displacement of sliding slot, the tube body 110 of membrane casing 101 due to
That divides valve casing 304 divides outside swell of valve tube body 346 to be softened, the section of 376 complete circular ring type of tube body（As shown in figure 21,
Original state）Become the approximate circular ring type section to swell（As shown in figure 24, swell state）, resetting spring 302 compressed and stored up
Deposit energy.
The diminution of sheath assembly 10 after needing reducing reverts to original state, only need to be again by aforementioned second sealing group
Part 12 and the first seal assembly 11 detach and rotate 180 degree and by second seal assembly 12 again with the first seal assembly 11
It snaps connection.The sign 267 of second seal assembly 12 is in the original state mark of the first seal assembly 11（MIN）
144 positions.The bounce of compressed resetting spring 302 will divide valve casing 304 laterally inwardly to push away, described to divide valve casing 304 horizontal
To inside movement, the 105 top formation clearance fit of avoid holes 264 Yu seal cap of second seal assembly 12, described at this time
Pulley 338 in 303 slip yoke 337 of drive link is pulled on the guiding skewback 314a of point valve casing 304.Membrane casing 101
For tube body 110 due to dividing valve casing 304 valve tube body 346 being divided to reduce and elastic shrinkage is restored, tube body 376 reverts to complete annulus
The section of type（As shown in figure 21, original state）.
As shown in Figure 21 and Figure 24-26, the reducing casing tube component is in the initial state, described to divide the formation of valve tube body 346
Lateral cross section with basic annulus, basic internal radius are D1；It is described to swell under state, it is described that valve tube body 346 is divided radially to move
Dynamic to form the lateral cross section with the annulus that swells far from the longitudinal axis, the internal radius that swells is D2, and D2>D1.
It should be appreciated by those skilled in the art the present embodiment rotates the second seal assembly 12 progress hook due to only needing
Installation can be completed, and can rapidly complete maximum reducing process such as directly becomes 15mm sheath assemblies by 10mm sheath assemblies.
It in this implementation, is fixedly secured since the first seal assembly 11 connects to be formed with 12 hook of the second seal assembly, when what is swollen divides valve
When tube body 346 is compressed by the internal pressure of incision of abdominal wall, the drive link 303 for dividing valve tube body 346 to be pressed down limits, can not
Automatically it laterally inwardly moves in a straight line, it is ensured that 307 diameter of casing after swelling does not change.Casing disclosed by the utility model
Component 10 specifically by taking the sheath assembly of 10mm as an example, can be actually needed according to operation and carry out change in size, can meet
Arbitrary diameter size between 10mm -15mm.Since the frequency used more than the sheath assembly of 10mm is fewer, so being not required to
When wanting reducing, sheath assembly 10 can be used as common sheath assembly.When operation needs to be hindered using stapler
Larger diseased organ is closed or taken out to tone（Tissue）When, operative doctor can carry out reducing, this when, due to only as needed
It is that original sheath assembly 10 is subjected to reducing, is neither used in additional increased puncture channel, while also need not will be original
Sheath assembly is transferred to, and large-sized sheath assembly is additionally inserted into.As shown in figure 24, the sheath assembly 10 after reducing swells, due to
Lateral magnification directly is carried out to patient muscle in original wound channel, the damage of patient's wound will not be caused, is greatly lowered
The pain of patient and reduce the follow-up time for needing rehabilitation.In addition, it will be appreciated by those skilled in the art that, operation doctor
When the raw sheath assembly for using the prior art, needs to increase puncture channel or carry out the switching of sheath assembly, which increases
The workload of operative doctor, the work that can effectively reduce operative doctor using sheath assembly 10 disclosed by the utility model are strong
Degree reduces operating time.
It should be appreciated by those skilled in the art 3 half approximations that reducing casing tube component disclosed by the utility model uses are right
What is claimed divides valve casing to form reducing casing tube component, and it should be appreciated by those skilled in the art using 4 half or more casing group
It is also the range of the utility model protection at reducing casing tube component.
The many different embodiments and example of the utility model are had shown and described.One of this field is common
Technical staff, under the premise of not departing from the scope of the utility model, by it is suitably modified the method and instrument can be made it is suitable
Answering property is improved.Several kinds of amendment schemes are referred, and for those skilled in the art, other amendment schemes are also can
With what is expected.Therefore the scope of the utility model should according to accessory claim, while be understood not to by specification and
The particular content of the structure that attached drawing shows and records, material or behavior is limited.
Claims (10)
1. a kind of variable-diameter sheath assembly of the straight selection structure of band, including the first seal assembly and the second seal assembly, described
One seal assembly and the second seal assembly are connected and fixed, it is characterised in that：
First seal assembly includes reducing casing tube component, and lower housing, lower cover, the lower cover and lower housing are fixedly clamped
The reducing casing tube component；
The reducing casing tube component includes the thin-film covering for dividing valve casing described in radially movable 3 points of valve casings and package
Pipe；Described point of valve casing, which is arranged in circular ring type along the longitudinal axis and formed with the membrane casing, accommodates the hollow logical of surgical instrument disengaging
Road；
The reducing casing tube component further includes skewback driving mechanism, divides valve casing radially described in the skewback driving mechanism driving
Do the linear motion close to the longitudinal axis or the linear motion far from the longitudinal axis.
2. variable-diameter sheath assembly as described in claim 1, it is characterised in that：Described point of valve casing proximally arrive distal end according to
Secondary includes to divide valve proximal end, divides valve tube body, divides valve boot proximal end；Divide valve tube body described in the membrane casing package, and exposes
Divide valve boot proximal end.
3. variable-diameter sheath assembly as claimed in claim 2, it is characterised in that：The reducing casing tube component includes initial shape
State and the state that swells：It is described that valve tube body is divided to form the lateral cross section with basic annulus under the original state, in basic annulus
Diameter is D1；It is described to swell under state, it is described that valve tube body is divided to move radially away from the longitudinal axis, form the transverse cutting with the annulus that swells
Face, the internal radius that swells are D2, and D2>D1.
4. variable-diameter sheath assembly as claimed in claim 2, it is characterised in that：The skewback driving mechanism includes and divides valve
The casing driving that proximal end is connected and fixed, drive link drive platform and resetting spring；Described sleeve pipe driving is led comprising radial
The guiding skewback of rail and its proximal end；The resetting spring is radially disposed in the guide rail and reversely compresses the guide rail, into
And push the guide rail close to y direction；The drive link makes the drive link axial linear movement with skewback cooperation is oriented to
While driving be oriented to skewback and drive guide rail radial alignment move.
5. variable-diameter sheath assembly as claimed in claim 4, it is characterised in that：The driving platform includes to have that instrument is allowed to go out
The torus of the instrument through-hole entered, the torus include the driving platform sliding slot coordinated with guide rail, and the driving platform sliding slot is along logical
Hole axially equal point setting, the driving platform sliding slot limit guide rail and radially move along a straight line along through-hole；The torus also includes
Quantity and consistent the first guide groove of the driving platform sliding slot, driving platform sliding slot described in the first guide groove unicom, described the
One guide groove limits drive link and in axial direction moves.
6. variable-diameter sheath assembly as claimed in claim 4, it is characterised in that：The drive link includes the pushing of its proximal end
The slip yoke of bar and distal end, the down-pressed pole is through the lower cover and exposes lower cover, and pulley is arranged in the slip yoke；Axis
The guiding skewback is pushed radially to move along a straight line to the pulley of linear motion.
7. variable-diameter sheath assembly as claimed in claim 4, it is characterised in that：
Second seal assembly includes cover board, and the cover board includes distal face and distally face is arranged circumferentially avoid holes；
Symbol Warning Mark is arranged in the shell of the cover board, and the lower cover outer rim homonymy setting is respectively used to instruction original state
First identifier and the second identifier of state of swelling；
Under the original state, the symbol Warning Mark corresponds to first identifier, and down-pressed pole is set in the avoid holes of the cover board.
8. variable-diameter sheath assembly as claimed in claim 7, it is characterised in that：It corresponds in the initial state, removes second
Second seal assembly is connected and fixed with the first seal assembly by quick locking structure by seal assembly, rotation 180 degree again, the symbol
Warning Mark corresponds to second identifier, and the down-pressed pole is pushed by the distal face of the cover board and drives drive link by proximate
Axial movement, pulley is moved axially by proximate along guiding surface divides valve casing radially to do far from the longitudinal axis described in driving
Linear motion, thus by the reducing casing tube switch between components to the state of swelling.
9. variable-diameter sheath assembly as claimed in claim 5, it is characterised in that：First seal assembly also includes sealing
The axle sleeve of cap, the seal cap and the lower cover is adhesively fixed and wraps up down-pressed pole, under original state, the seal cap with keep away
Interporal lacuna is allowed to coordinate.
10. a kind of puncture outfit, it is characterised in that：Include the sheath assembly as described in claim 1-9 is any, the puncture outfit is also
It include the puncture needle through sheath assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720635409.XU CN207755345U (en) | 2017-06-03 | 2017-06-03 | A kind of the variable-diameter sheath assembly and puncture outfit of the straight selection structure of band |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720635409.XU CN207755345U (en) | 2017-06-03 | 2017-06-03 | A kind of the variable-diameter sheath assembly and puncture outfit of the straight selection structure of band |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207755345U true CN207755345U (en) | 2018-08-24 |
Family
ID=63179423
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720635409.XU Withdrawn - After Issue CN207755345U (en) | 2017-06-03 | 2017-06-03 | A kind of the variable-diameter sheath assembly and puncture outfit of the straight selection structure of band |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207755345U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107049440A (en) * | 2017-06-03 | 2017-08-18 | 成都五义医疗科技有限公司 | A kind of the variable-diameter thimble assembly and puncture outfit of the straight selection structure of band |
| CN110464389A (en) * | 2019-08-21 | 2019-11-19 | 青岛幔利橡树医疗科技有限公司 | A kind of load-engaging device for laparoscopic surgery |
| CN113633385A (en) * | 2021-08-03 | 2021-11-12 | 赵宇 | Terminal device of minimally invasive surgery robot |
-
2017
- 2017-06-03 CN CN201720635409.XU patent/CN207755345U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107049440A (en) * | 2017-06-03 | 2017-08-18 | 成都五义医疗科技有限公司 | A kind of the variable-diameter thimble assembly and puncture outfit of the straight selection structure of band |
| CN110464389A (en) * | 2019-08-21 | 2019-11-19 | 青岛幔利橡树医疗科技有限公司 | A kind of load-engaging device for laparoscopic surgery |
| CN110464389B (en) * | 2019-08-21 | 2020-12-18 | 青岛幔利橡树医疗科技有限公司 | Fetching device for laparoscopic surgery |
| CN113633385A (en) * | 2021-08-03 | 2021-11-12 | 赵宇 | Terminal device of minimally invasive surgery robot |
| CN113633385B (en) * | 2021-08-03 | 2023-02-03 | 赵宇 | Terminal device of minimally invasive surgery robot |
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