CN206453834U - A kind of puncture outfit diaphragm seal and puncture outfit seal assembly containing groove structure - Google Patents
A kind of puncture outfit diaphragm seal and puncture outfit seal assembly containing groove structure Download PDFInfo
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- CN206453834U CN206453834U CN201620836368.6U CN201620836368U CN206453834U CN 206453834 U CN206453834 U CN 206453834U CN 201620836368 U CN201620836368 U CN 201620836368U CN 206453834 U CN206453834 U CN 206453834U
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- puncture outfit
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Abstract
The utility model is related to a kind of puncture outfit diaphragm seal and puncture outfit seal assembly containing groove structure.The diaphragm seal includes proximal openings and remote stomidium and the sealed wall of proximal openings is extended to from remote stomidium, the sealed wall has proximal end face and distal face, the remote stomidium is formed by sealing lip, for accommodating the apparatus of insertion and forming sealing, the sealing lip includes central axis and transverse plane substantially vertical with the axis.In sealing lip close region, the sealed wall includes main body turret wall and multiple grooves；Each described groove includes two side walls, and the side wall is the face domain that the width extended laterally outward since sealing lip that both sides are limited gradually increases.The groove has increase ring girth, reduces and wraps up region, improvement lubricating reliability, the function such as axial extensional rigidity of increase, so as to the larger reduction frictional resistance and reduction stick-slip.
Description
Technical field
The utility model is related to Minimally Invasive Surgery apparatus, more particularly to a kind of puncture outfit sealing structure.
Background technology
Puncture outfit is the artificial channel for entering body cavity in a kind of Minimally Invasive Surgery (especially hard tube endoscope-assistant surgery) for setting up
Operating theater instruments.Generally it is made up of thimble 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 thimble assembly, but enters body cavity through penetrating stomach wall at skin openings together.Once into body
Puncture needle is removed after chamber, leaves the passage that thimble assembly passes in and out body cavity as apparatus.
In hard tube endoscope-assistant surgery, it need to generally set up and maintain stable pneumoperitoneum, to obtain enough operation technique spaces.Set
Tube assembly is generally by sleeve pipe, shell, diaphragm seal (also known as instrument seal) and zero sealing (also known as automatic-sealed) composition.Described sleeve pipe
Penetrated outside body cavity to body cavity, the passage of body cavity is passed in and out as apparatus.The shell connects sleeve pipe, zero sealing and diaphragm seal
Into a sealing system.Zero sealing is generally not provided the sealing for insertion instrument, and is closed automatically when apparatus is removed
And form sealing.The diaphragm seal banding apparatus and forms sealing when apparatus is inserted.
In a kind of typical ESS, generally the small internal diameter sleeve pipe of 4 puncture channels, i.e., 2 is set up in patient's stomach wall
Component (usual 5mm) and 2 large diameter thimble assemblies (usual 10~12mm).Generally enter patient via small internal diameter thimble assembly
Internal apparatus is only completed auxiliary operation；One of large diameter thimble assembly is used as endoscope path way；And another large diameter
The main thoroughfare that thimble assembly is performed the operation as doctor.Said main thoroughfare, about 80% time applies 5mm apparatuses；
About 20% time applies other major diameter apparatuses；And 5mm apparatuses need frequent switching with major diameter apparatus in operation.Using small straight
Footpath appliance time is most long, and its sealing reliability is more important；Using during major diameter apparatus often for operation in critical stage (for example
Vessel sealing and tissue apposition), it switches convenience and operation comfort is more important.
Fig. 1 and Fig. 2 depict a kind of thimble assembly 700 of existing typical 12mm specifications.Described sleeve pipe component 700 is wrapped
Containing lower casing 710, upper casing 720 and diaphragm seal 730 between the upper casing 720 and lower casing 710, Duckbill seal 750 are clipped in.The lower casing
710 central through holes 713 limited comprising elongated tubular 711.The upper casing 720 includes the proximal end bore 723 that inwall 721 is limited.It is described
Diaphragm seal 730 includes proximal openings 732, and remote stomidium 733, sealing lip 734, truncated cone sealed wall 735, flange 736 and outside are floating
Dynamic part 737.The distal openings 733 are formed by sealing lip 734.The axis for defining sealing lip is 741, and definition is generally vertically
In the transverse plane 742 of axis 741；It is guiding that the revolution bus of truncated cone sealed wall 735, which is defined, with the angle of the transverse plane 742
Angle ANG1.
Such as Fig. 1, during insertion 5mm apparatuses, it is approximately considered the hoop clamp force that only deformation of sealing lip 734 is produced and ensures for apparatus
Reliable sealing.And when being performed the operation, often need to be from the operating angle apparatus of each limit.5mm apparatuses have very in 12mm sleeve pipes
Big radially movable space, this make it that the radial force of sealing lip 734 is larger.Therefore sealing lip 734 should for the 5mm apparatuses of insertion
There are enough hoop clamp forces just to can guarantee that its sealing reliability.
Such as Fig. 2, make an a diameter of Di(Di＞ 5mm) cylinder intersect with the sealed wall 735, form a diameter of Di's
Intersection 738.If those skilled in the art are necessarily it is appreciated that insert a diameter of DiApparatus, then the sealed wall 735 is from close
The strain (stress) for sealing lip 734 to the region of intersection 738 is larger, and this region is called sealing lip close region (or area of stress concentration
Domain)；And the sealed wall 735 from intersection 738 to the region of flange 736 its strain (stress) it is smaller.The diameter D of insertion instrumenti
Difference, the bounds of the sealing lip close region (region of stress concentration) is of different sizes.For convenience of quantifying, define and work as DiFor
It is sealing lip from sealing lip 734 to the region of the intersection 738 when design passes through the maximum gauge of the operating theater instruments of diaphragm seal
Close region.
Such as Fig. 3, during insertion major diameter apparatus (such as 12.8mm), the sealing lip 734 will swell to it is suitably sized with
Accommodate the apparatus of insertion；The sealed wall 735 is divided into conical walls 735c and cylindrical wall 735d two parts；The cylindrical wall 735d
It is wrapped on apparatus outer surface, forms the parcel region of stress high concentration.Define conical walls 735c and cylindrical wall 735d friendship
Line is 738a；After apparatus is removed, the sealed wall 735 under nature is reverted to, defining the intersection 738a resiliences is
Radius is DxAnnulus 738b (not shown)s；The intersection 738b is bending line of demarcation when inserting major diameter apparatus.It is fixed
Justice conical walls 735c revolution bus and the angle of the transverse plane 742 are ANG2, and ANG2 ＞ ANG1；Insert big
The sealed wall 735 rotates diastole by fulcrum of the intersection of flange 736 and sealed wall 735 during diameter apparatus.Define the cylinder
Wall 735d height is Ha.The HaIt is not definite value, the remote stomidium is of different sizes, the sealing lip size is different, the sealing
Wall wall thickness is different, and the guide angle is different or the not equal factor of insertion instrument diameter will all cause HaIt is different.
When in operation operation insertion diaphragm seal in apparatus movement when, between the parcel region and insertion instrument exist compared with
Big frictional resistance.The larger frictional resistance is typically easy to cause diaphragm seal varus, and operation comfort is poor, operation fatigue, even
Cause thimble assembly to fix the defect such as not firm on patient's stomach wall, influence the performance of thimble assembly.
Caused by the frictional resistance is larger in defect, diaphragm seal varus is influence thimble assembly performance most serious
One of problem.Such as Fig. 4, when outwards extracting major diameter apparatus, easily occurs diaphragm seal varus.The sealed wall after varus
735 are divided into cylindrical wall 735e, conical walls 735f, conical walls 735g；The cylindrical wall 735e is wrapped in apparatus outer surface, is formed
The parcel region of stress high concentration.The height for defining the cylindrical wall 735e is Hb, usual HbMore than Ha；When extracting apparatus
Frictional resistance be more than insertion instrument when frictional resistance；This differentia influence operative doctor operating experience even results in operation doctor
The raw illusion of production.It is more serious, diaphragm seal after varus possibly into proximal end bore 723, i.e. diaphragm seal be deposited in apparatus with it is described
Cause between inwall 721 stuck.Being disclosed respectively in United States Patent (USP) US7112185, US7591802 prevents arranging for diaphragm seal varus
Apply；These measures can effectively reduce varus probability but can not thoroughly solve the problems, such as varus.
Reduce the frictional resistance, simplest method is to reduce the coefficient of friction between two contact surfaces using lubricating grease.But
The reliability of the measure is bad.During clinical practice, due to long-term being scraped with diaphragm seal repeatedly of apparatus, and a variety of apparatuses
Switch repeatedly, lubricating grease is departed from and is pulled away from diaphragm seal surface, so as to cause insufficient lubrication.
A kind of screening glass for being close to diaphragm seal is disclosed in United States Patent (USP) US5342315.The screening glass can both avoid device
The sharp edge of tool damages diaphragm seal, and because screening glass skin-friction coefficient is less than diaphragm seal skin-friction coefficient, therefore can be certain
The reduction frictional resistance of degree.But the sealing lip close region generally can not be completely covered by screening glass.
A kind of diaphragm seal containing muscle is disclosed in United States Patent (USP) US5827228, i.e. diaphragm seal is since near centre bore, tool
There are several muscle radially, the muscle reduces the contact area between insertion instrument and diaphragm seal, so as to reduce the friction
Resistance.A kind of approximate reinforcement is disclosed in European patent EP 0994740 has reduction contact area and increase diaphragm seal axle
To the effect of tensile strength.
A kind of fold shape diaphragm seal is disclosed in United States Patent (USP) US7842014, it is mainly characterized by with corrugated close
Seal lip and undulating pleats seal.The pleated structure can increase ring girth, a certain degree of reduction hoop clamp force.
Disclose in Chinese utility model application CN101480354A (being rejected at present) a kind of containing yielding groove
Diaphragm seal, it is characterised in that since sealing lip, has several yielding grooves on the circular conical surface of diaphragm seal；The yielding groove
Wall thickness be much smaller than the circular conical surface wall thickness；The main major diameter apparatus that insertion is accommodated by the elongation strain of mutability groove.
Although having disclosed the scheme for much reducing the frictional resistance in the prior art, disclosed technical scheme is basic
On only from influence frictional resistance some factor have proposition solution in mind, its reduce frictional resistance effect it is smaller or not clear
It is aobvious.Even other defect is introduced in some schemes because improving a factor.For example on diaphragm seal increase reinforcement, which can be reduced, connects
Contacting surface is accumulated, but can increase hoop clamp force simultaneously；The yielding groove in truncated cone face is much smaller than for example with thickness, can be caused yielding
Easily it is damaged at groove；The ring girth at diaphragm seal opening for example is added according to waveform sealing lip, so as to sacrifice
Using sealing reliability during 5mm apparatuses, do not increase the ring girth at diaphragm seal opening but according to corrugated sealing lip,
Then wave sealing lip has lost improvement result relative to the sealing lip of pure circle.In a word.Influence the factor of the frictional resistance
A lot, the comprehensive function of each factor must be considered from the angle of mechanics and tribology.
Diaphragm seal is generally made up of elastomeric materials such as natural rubber, silicon rubber, isoprene rubbers, and elastomeric material has super-elasticity
And viscoplasticity.Although the mechanical model of rubber deformation process is very complicated, but still can be approximately its bullet is described with generalized Hooke law
Sexual behaviour；Its viscous behavior is described with newton module.Research shows that influence rubber produces frictional force with device contacts
Principal element includes：The smaller then frictional force of coefficient of friction of two contact surfaces is smaller；Lubricating condition between two contact surfaces is more good, rubs
Wipe power smaller；The smaller then frictional force of real contact area between two contact surfaces is smaller；Normal pressure between two contact surfaces is smaller then
Frictional force is smaller.The utility model considers above-mentioned factor, is rubbed between the more perfect reduction diaphragm seal of proposition and insertion instrument
Wipe the solution of resistance.
In addition to aforementioned friction resistance considerable influence thimble assembly performance, diaphragm seal stick-slip is also influence puncture outfit
Another key factor of performance.The stick-slip, i.e., when apparatus is moved axially in sleeve pipe, the sealing lip of diaphragm seal and its face
During near field and geo-stationary adhere on apparatus that (now the frictional force between apparatus and diaphragm seal is mainly static friction
Power)；When and with apparatus produce the relative phenomenon slided (now the frictional force between apparatus and diaphragm seal be mainly dynamic friction
Power)；And the stiction is much larger than the kinetic force of friction.The static friction and dynamic friction are alternately present, and this causes apparatus to exist
The resistance moved in diaphragm seal is unstable and translational speed is unstable.It will be understood by those skilled in the art that in Minimally Invasive Surgery, doctor
Life can only use apparatus to touch patient organ's organ, and by the local model of endoscopic images system monitoring apparatus working head
Enclose.In this limited view, in the case that tactile is blocked, operative doctor generally assign resistance feedback during mobile apparatus as judgement
One of whether normal information of operation technique.Diaphragm seal stick-slip have impact on the comfortableness of operation, positioning accuracy, or even induce doctor
The judgement of raw mistake.
During the use of thimble assembly, the stick-slip is very difficult to avoid completely, but can be reduced.Research shows, institute
State stick-slip is influenceed by two principal elements：One is maximum static friction force and the smaller then stick-slip of kinetic force of friction difference are fainter；Its
Two be diaphragm seal the more big then stick-slip of axial extensional rigidity it is fainter.Avoid the hoop clamp force between diaphragm seal and apparatus excessive,
Reduce the real contact area between diaphragm seal and apparatus, keep the good lubrication between diaphragm seal and apparatus, can reduce most
The difference of big stiction and kinetic force of friction, so as to reduce stick-slip.Increase the axial extensional rigidity of diaphragm seal simultaneously, it helps
Mitigate stick-slip phenomenon.The utility model is proposed simultaneously improves the measure of stick-slip.
In summary, up to the present, the thimble assembly of foregoing problems can effectively also be solved without a kind of.
Utility model content
Therefore, a purpose of the present utility model is to provide a kind of puncture outfit diaphragm seal, and the diaphragm seal is opened including near-end
Mouth and remote stomidium and the sealed wall that proximal openings are extended to from remote stomidium.The remote stomidium is formed by sealing lip, for accommodating
The apparatus of insertion simultaneously forms sealing.The sealed wall has proximal end face and distal face.The diaphragm seal can be being ensured for insertion
5mm apparatuses it is reliable sealedly under the premise of, frictional resistance during reduction application major diameter apparatus and improve stick-slip.
As described in background, the parcel region that sealing lip and its close region are formed when inserting major diameter apparatus is to cause to rub
Wipe the larger root of resistance.The frictional resistance is reduced, the radial stress reduced between apparatus and diaphragm seal should be considered,
Reduce the parcel region between apparatus and diaphragm seal, reduce the real contact area of apparatus and diaphragm seal.Those skilled in the art
It is appreciated that it can be seen from generalized Hooke law and poisson effect, increase ring girth can reduce hoop strain (stress), from
And reduce radial strain (stress).It should be noted that the strain of sealing lip can not be reduced by increasing the method for ring girth
(stress), this reduces sealing reliability when causing to apply 5mm apparatuses.And because sealing lip close region is applying major diameter
Stress high concentration during apparatus, therefore should quickly increase the ring girth of sealing lip close region；Face for sealing lip
Region outside near field, because strain (stress) is smaller, it may not be necessary to using the measure of increase ring girth.In addition, increase
The axial extensional rigidity of sealing lip close region should also be increased while ring girth, and (reduction maximum is quiet to rub with good lubrication is kept
Wipe power and the difference of kinetic force of friction), so as to improve the stick-slip of sealing lip close region.
In one side of the present utility model, the diaphragm seal includes proximal openings and remote stomidium and extended from remote stomidium
To the sealed wall of proximal openings, the sealed wall has proximal end face and distal face；The remote stomidium is formed by sealing lip, for holding
Receive insertion apparatus and form sealing, the sealing lip include central axis and transverse plane substantially vertical with the axis.
Sealing lip close region, the sealed wall includes main body turret wall and multiple grooves；The groove from the near-end of sealed wall towards
Distal face is recessed and main body turret wall is divided into multiple regions.In sealing lip close region, each described groove includes two
Individual side wall, and the side wall is the gradually broadening face domain extended laterally outward since sealing lip that both sides are limited.It is described recessed
Groove can play the ring girth of increase sealing lip close region, and the axial extensional rigidity of increase reduces parcel region, reduce apparatus with
The effect of the real contact area of diaphragm seal.In a kind of embodiment, the sealing lip is annular；The section of the groove
It is approximate U-shaped；The groove inner width B in sealing lip close region, wherein 0.5mm≤B≤1mm.The sealing
Film also includes intersecting with main body turret wall extension, or the flange intersected simultaneously with main body turret wall and groove extension,
And the outside floating part with least one transverse fold of proximal openings is extended to from flange.
In another optional embodiment, the angle between the both sides of the recess sidewall of sealing lip close region
Geometrical relationship meets following formula：
Wherein：
Angle of the side wall of θ=groove in sealing lip close region between its both sides
The bus of α=main body turret wall and the angle (guide angle) of transverse plane
Arctan=arctan functions
Cos=cosine functions
π=pi
R=radiuses
RiThe maximum radius for the operating theater instruments that=design passes through diaphragm seal
R0The radius of=sealing lip
The number of P=grooves.
And outside sealing lip close region, the angle between the both sides of the side wall does not meet above-mentioned formula, the side
The width of wall is gradually reduced.Mould processing can so be simplified and the production efficiency of diaphragm seal is improved, and reduce sealing
The space that membrane module transverse shifting is occupied so as to by puncture outfit be sized to it is smaller.
In other side of the present utility model, the diaphragm seal includes proximal openings and remote stomidium and prolonged from remote stomidium
The sealed wall of proximal openings is extended, the sealed wall has proximal end face and distal face；The remote stomidium is formed by sealing lip, is used for
Accommodate the apparatus of insertion and form sealing.The sealed wall includes main body turret wall and multiple grooves, in sealing lip close region
Interior, each described groove includes two side walls, and the side wall is being extended laterally outward since sealing lip for both sides restriction
Along sealing lip axis direction gradually broadening face domain；Outside sealing lip close region, the width of the side wall first quickly subtracts
It is small to keep extending laterally outward in the case of width is constant again.I.e. in the present embodiment the groove along sealing lip axis direction
Its depth is first gradually to increase, then is quickly decreased to a certain depth, then keeps extending laterally outward in the case of depth is constant,
I.e. groove is in step-like.The step-like groove can strengthen the axial extensional rigidity of diaphragm seal, so as to reduce the stick-slip；And
After varus occurs for diaphragm seal, it can largely reduce apparatus with sealing intermembranous real contact area.
In another aspect of the present utility model, the diaphragm seal includes proximal openings and remote stomidium and prolonged from remote stomidium
Extend the sealed wall of proximal openings；The remote stomidium is formed by sealing lip, for accommodating the apparatus of insertion and forming sealing.It is described
Sealed wall is by 8 V-type folds and 8 U-shaped grooves are spaced forms.The V-type fold is beneficial to strengthen the axial direction of diaphragm seal
Extensional rigidity and reduction apparatus are with sealing intermembranous real contact area；And the U-shaped groove can increase sealing lip close region
Ring girth.
In another aspect of the present utility model, the diaphragm seal includes proximal openings and remote stomidium and prolonged from remote stomidium
Extend the sealed wall of proximal openings；The remote stomidium is formed by sealing lip, for accommodating the apparatus of insertion and forming sealing.Close
Lip close region is sealed, the sealed wall includes main body turret wall and multiple grooves；The groove is from the near-end of sealed wall towards remote
Main body turret wall is simultaneously divided into multiple regions by sunken end face；In sealing lip close region, each described groove includes two
Side wall, and the side wall be both sides limit extended laterally outward since sealing lip gradually increase along sealing lip axis direction
Wide face domain.The cross sectional shape of a portion of the groove is approximate U-shaped in the present embodiment, and described in another part
The cross sectional shape of groove is approximate V-type.Sealing lip described in this example is cylindrical.
Another purpose of the present utility model is to provide a kind of puncture outfit seal assembly.The seal assembly includes lower fixation
Ring, diaphragm seal, protection device, upper retainer ring, upper shell and upper lid；The diaphragm seal and protection device be sandwiched in retainer ring and
Between lower retainer ring, the protection device is used to protect diaphragm seal to damage from the sharp edge of insertion instrument；The diaphragm seal is also
Including extending the flange that intersect with the main body turret wall, and from flange extend to proximal openings with least one transverse direction
The outside floating part of fold；The near-end of the diaphragm seal is sandwiched between upper shell and upper lid, and the outside floating part makes
The diaphragm seal and screening glass can upper shell and upper cap-shaped into gas-tight silo in laterally floating.
When refer to the attached drawing and detailed description, of the present utility model above-mentioned or other purposes, feature and advantage will become
Obtain clearer.
Brief description of the drawings
In order to more fully understand essence of the present utility model, it is described in detail below in conjunction with accompanying drawing, wherein：
Simulation deformation pattern when Fig. 1 is the thimble assembly insertion 5mm apparatuses of prior art；
Fig. 2 is the detail drawing of the diaphragm seal 730 of prior art；
Simulation deformation pattern when Fig. 3 is the thimble assembly insertion 12.8mm apparatuses of prior art；
Simulation deformation pattern when Fig. 4 is the thimble assembly extraction 12.8mm apparatuses of prior art；
Fig. 5 is the three-dimensional local sectional view of the utility model thimble assembly；
Fig. 6 is the exploded view of the sealing membrane modules in Fig. 5 described sleeve pipe components；
Fig. 7 is the partial sectional perspective view of seal assembly shown in Fig. 6；
Fig. 8 is that diaphragm seal shown in Fig. 6 omits diaphragm seal stereogram after near-end and floating part；
Fig. 9 is the reversed isometric view of diaphragm seal shown in Fig. 8；
Figure 10 is the 10-10 sectional views of diaphragm seal shown in Fig. 8；
Figure 11 is the 11-11 sectional views of diaphragm seal shown in Fig. 8；
Figure 12-13 is the figure after the cutting separation of diaphragm seal ring shown in Fig. 9；
Figure 14 is the diaphragm seal stereogram of embodiment two of the present utility model；
Figure 15 is the reversed isometric view of diaphragm seal shown in Figure 14；
Figure 16 is the 16-16 sectional views of diaphragm seal shown in Figure 15；
Figure 17 is the 17-17 sectional views of diaphragm seal shown in Figure 15；
Figure 18 is the diaphragm seal stereogram of embodiment three of the present utility model；
Figure 19 is the reversed isometric view of diaphragm seal shown in Figure 18；
Figure 20 is the 20-20 sectional views of diaphragm seal shown in Figure 19；
Figure 21 is the 21-21 sectional views of diaphragm seal shown in Figure 19；
Figure 22-23 is the figure after the cutting separation of diaphragm seal ring shown in Figure 19；
Figure 24 is the diaphragm seal stereogram of example IV of the present utility model；
Figure 25 is the 25-25 sectional views of diaphragm seal shown in Figure 24；
Figure 26 is the 26-26 sectional views of diaphragm seal shown in Figure 24；
Figure 27 is the 27-27 partial sectional views of diaphragm seal shown in Figure 28；
Figure 28 is the reversed isometric view of diaphragm seal shown in Figure 24；
Figure 29 is the stereogram of the same view angle after diaphragm seal rounding shown in Figure 28；
In all views, identical label represents equivalent part or part.
Embodiment
Disclosed herein is embodiment of the present utility model, it should be understood, however, that disclosed embodiment is only this reality
With new example, the utility model can be realized by different modes.Therefore, this disclosure be not to be construed for
Restricted, but only as the basis of claim, and it is how new using this practicality as teaching those skilled in the art
The basis of type.
Fig. 5 depicts the overall structure of puncture outfit.A kind of typical puncture outfit includes the (not shown) of puncture needle 10 and sleeve pipe group
Part 20.Thimble assembly 20 has open near-end 192 and open distal end 31.In a kind of typical application, puncture needle 10 runs through
Thimble assembly 20, then enters body cavity through penetrating whole stomach wall at skin openings together.Once into body cavity, the quilt of puncture needle 10
Take and leave the passage that thimble assembly 20 passes in and out body cavity as apparatus away.The near-end 192 is in the patient distal end
31 in patient's body.A kind of preferred thimble assembly 20, can be divided into the first seal assembly 100 and the second seal assembly
200.The neck 39 of the component 100 and the snap fit 112 of the component 200 coordinate fastening.The snap fit 112 and neck 39
Cooperation singlehanded can quickly be split.The convenient tissue or foreign matter taken out in patient's body when this is mainly for operation.The component
Fast lock between 100 and component 200 is connected with a variety of implementations.In addition to the structure that the present embodiment is shown, screw thread can be also used
Connection, rotary buckle or other quick locking structures.Selectable, the component 100 and component 200 can be designed to can not be quick
The structure of fractionation.
Fig. 5 depicts the composition and assembly relation of the first seal assembly 100.Lower house 30 includes an elongated tubular 32, and this is thin
Long tube limits the sleeve pipe 33 through distal end 31 and is connected with shell 34.The lower house 30 has the inwall of support Duckbill seal
36 and the air valve mounting hole 37 with inwall UNICOM.Valve element 82 is arranged in valve body 80 and is installed along with the mounting hole 37.
The flange 56 of Duckbill seal 50 is sandwiched between the inwall 36 and lower cover 60.Fixation between the lower cover 60 and lower house 30
Mode has a variety of, can be glued using interference fit, ultrasonic bonding, the mode such as buckle fixation.Lower cover 60 described in the present embodiment
4 mounting posts 68 and 4 mounting holes 38 of the lower house 30 be interference fitted, this interference fit is in Duckbill seal 50
Compressive state.Described sleeve pipe 32, inwall 36, Duckbill seal 50, valve body 80 and valve element 82 have collectively constituted first chamber.This implementation
In example, the Duckbill seal 50 is single seam, but it is also possible to uses other kinds of closure valve, including tongue type valve, stitches duckbill valve more.
When external device runs through the Duckbill seal 50, its duckbilled 53 can be opened, but it is generally not provided relative to the apparatus
Be fully sealed.When the apparatus is removed, the duckbilled 53 is closed automatically, so as to prevent fluid in first chamber to body
Outward leakage.
Fig. 5 depicts the composition and assembly relation of the second seal assembly 200.Sealing membrane modules 180 are clipped in lid 110 and upper
Between housing 190.The near-end 132 of the sealing membrane modules 180 is fixed on the inner ring 116 and the upper casing of the upper lid 110
Between the inner ring 196 of body 190.Fixed form between the upper shell 190 and upper lid 110 has a variety of, can use interference fit,
Ultra-sonic welded, is glued, the mode such as buckle fixation.The shell 191 for the upper shell 190 that the present embodiment displaying connected mode is
Fixed between the shell 111 of the upper lid 110 by ultrasonic bonding.This fixation causes the sealing membrane modules 180
Near-end 132 is in compressive state.The centre bore 113 of the upper lid 110, inner ring 116 and sealing membrane modules 180 together constitute
Two chambers.
Fig. 6-7 depicts the composition and assembly relation of sealing membrane modules 180.The sealing membrane modules 180 include lower fixation
Ring 120, diaphragm seal 130, protection device 160 and upper retainer ring 170.The diaphragm seal 130 and protection device 160 are sandwiched in lower solid
Determine between ring 120 and upper retainer ring 170.And the pillar 121 of the lower retainer ring 120 and miscellaneous part in the component 180
Upper corresponding hole alignment.The pillar 121 and the hole 171 of upper retainer ring 170 are interference fitted, so that whole sealing membrane modules
180 are in compressive state.The protection device 160 includes the screening glass 163 of 4 order overlap joints, for protecting the diaphragm seal
130 central seal body, protects it from perforation or tear that the sharp edge of the operating theater instruments of insertion is caused.
The diaphragm seal 130 includes proximal openings 132, distal bore 133 and the sealed wall proximally extended from distal end,
The sealed wall has proximal end face and distal face.The remote stomidium 133 is formed by sealing lip 134, the apparatus for accommodating insertion
And form hermetic seal.The sealing lip 134 can be non-circular, and sealing lip 134 described in this example is approximate annular,
Its radius is defined for Rlip, then sealing lip girth be approximately equal to 2*Rlip* π (π=3.14159), usual sealing lip Zhou Changwei 11.8
~13.8mm.The section of the sealing lip is circle, and its radius is usually 0.35~0.5mm.
The diaphragm seal 130 also includes flange 136；The one end of sealed wall 135 connects sealing lip 134 and other end flange connector
136；One end flange connector 136 of floating part 137 and the other end connect the near-end 132.The flange 136, which is used to install, to be protected
Device 160.The floating part 137 includes one or more radial directions (transverse direction) fold, so that whole sealing membrane modules 180
It can be floated in the component 200.
The component 180 can be by much having the material of different qualities to be made.For example diaphragm seal 130 uses silica gel, different
The elastic materials such as penta rubber；Protection device 160 uses semirigid thermoplastic elastomer (TPE)；And lower retainer ring 120 and upper fixation
Ring 170 is made of relatively hard plastic materials such as makrolon.
Fig. 8-11 is finer to depict one embodiment diaphragm seal 130 of the present utility model.To reduce production cost,
Diaphragm seal 130 is preferably devised to an entirety, but it is also possible to be designed to that seal body interior separated at flange 136 and outside are floating
The dynamic part of part two.Embodiment one is improved mainly for the seal body interior.To simplify statement, subsequent descriptions sealing
Outside floating part and near-end are not shown during film.The axis for defining the sealing lip 134 is 158.Definition is basically perpendicular to axle
The transverse plane 159 of line 158.
The sealed wall 135 can be approximate frustoconical, near hemispherical, or irregular surface of revolution.This example
Middle sealed wall 135 surrounds the arrangement form of sealing lip 134 in the way of approximate circular cone.The sealed wall 135 includes main body turret wall
138 and multiple grooves 140.The groove 140 is recessed from the near-end of main body turret wall 138 towards the direction of distal face, and groove
The proximally facing face of opening.The groove 140 at the sealing lip 134 extend laterally outward, and in sealing lip close region,
Its depth gradually increases when the groove 140 is extended laterally outward；And outside sealing lip close region, the groove 140
Depth quickly reduces.The measuring method of the depth of groove is：The groove concave bottom point is measured along axis direction to arrive
The beeline of main body turret wall.In sealing lip close region, the multiple groove 140 is approximate by the main body turret wall 138
It is divided into some.
The groove 140 includes lower wall 141, side wall 142 and skew wall 143.One side of the side wall 142 is returned with the main body
Turn wall 138 and be crossed to form intersection 145a, 145b；The another side of the side wall 142 is crossed to form intersection with the lower wall 141
146a, 146b；3rd side of the side wall 142 is crossed to form intersection 147a, 147b with the skew wall 143；The skew wall 143 with
The lower wall 141 is crossed to form intersection 148a, 148b；The skew wall 143 is crossed to form intersection with the main body turret wall 138
149a, 149b.It is α to define the intersection 145a (145b) and the angle of transverse plane 159, referred to as guide angle α, and 90 ° of 0 °≤α ＜
(turret wall is parallel with transverse plane when 0 °, such case can actually occurs；When α is close to 90 °, turret wall and transverse plane are just
It is near normal, the parcel region is larger when now using major diameter apparatus, 50 ° of the usual ＜ of α angles higher limit).Definition institute
It is θ to state the angle that intersection 145a and 146a (or 145b and 146b) be crossed to form；The intersection point (i.e. the summit at θ angles) of two intersection
There may be on sealing lip 134；Or the virtual extended line of two intersection intersects at the inner side of sealing lip 134.
Such as Figure 12-13, in a kind of optional embodiment, the thickness of the sealed wall 135 is substantially homogeneous, i.e. institute
Main body turret wall 138 is stated, the lower wall 141, the wall thickness of the side wall 142 is of substantially equal.The substantially homogeneous wall thickness so that
The deformation of the sealed wall 135 is substantially homogeneous.But described substantially homogeneous wall thickness is not restricted to the absolute of numerical value
It is equal.When groove number is more, manufacture (such as in order to strengthen the mould strength of groove) for convenience, or consider error because
Element, thickness of thin 0.05~0.25mm of the thickness than the madial wall 141 (or lateral wall 142) of the side wall 143.And it is described
The wall thickness numerical value of madial wall 141, lateral wall 142 and side wall 143 is smaller, quantifies for convenience, the definition madial wall 141 (or it is outer
Side wall 142) and the wall-thickness ratio of the side wall 143 wall thickness of sealed wall 135 is approximately considered between 1~1.5, still is base
This is uniform, still without departing from scope of the present utility model.
The sealed wall 135 of this example includes 8 linear grooves, however can also using greater number or fewer number of
Or nonlinear groove.The side wall 142 of this example is substantially parallel with the axis 158, makees in sealing lip close region
Any parallel to axis 158 and simultaneously section of vertical any one of side wall 142, the section be cut it is described recessed
The section that groove 140 is crossed to form is approximate U-shaped (section of other grooves is also according to said method defined).But for convenience of manufacture, example
Such as conveniently stripped, the side wall 142 can be not parallel with the axis 158；The section of i.e. described groove 140 is approximate trapezoid,
Even approximate V-type.
It is rotary shaft with axis 158, it is R to make a radius1The face of cylinder intersect with the main body turret wall 138, after
Its intersection makees the section M of the revolution bus perpendicular to the main body turret wall 1381(being rotary shaft with axis 158).It is described to cut
Section M1The diaphragm seal 130 is divided into inboard portion 156 (such as Figure 12) and Outboard Sections 157 (Figure 13).The cut surface M1
Multistage intersection 151a and 151b are crossed to form with the main body turret wall 138.The cut surface M1Intersect shape with the side wall 142
Into multistage intersection 152a and 152b.The cut surface M1Multistage intersection 153a and 153b are crossed to form with the lower wall 141.It is described
Multi-section-line 151a, 152a, 153a form annular intersection 155a；The multi-section-line 151b, 152b, 153b form annular intersection
155b.The annular intersection 155a and 155b defines section 155.
Such as Figure 12-13, it is clear that the perimeter L of the intersection 155a (155b)1Much larger than 2* π * R1, i.e. groove serves increase
The effect of ring girth.And L1With 2* π * R1Difference, be approximately equal to intersection 153a (153b) length L22*P times (P is recessed
The number of groove).Really play the girth effect of increase ring is the side wall 143.Meet what can be manufactured in recess width
Under precondition, increase recess width can not greatly increase ring girth.
It will be understood by those skilled in the art that certainly existing some R1Value, makes section M1The Outboard Sections 157 of segmentation from
The section 155 starts, and the change of its shape is mainly shown as diaphragm seal partial loop variation and macroscopical displacement, and non-general
Micro molecule chain lengthening and integrally stretching deformation.And the inboard portion 156, from sealing lip 134 to the section 155, its shape
The partial loop variation of the change performance diaphragm seal of shape and the comprehensive function of integrally stretching deformation.It can be seen that, the groove is increased
Ring girth, is reduced using the hoop strain (stress) during major diameter apparatus, so as to reduce hoop clamp force and the friction
Resistance.
The groove 140 can be used for storing lubricating grease.When inserting major diameter apparatus, the parcel area of the groove variations formation
Domain is smaller, and groove 140 is only flattened compared with segment.Close to the groove not flattened in parcel region, there is preferably deposit lubricating grease
Function.When apparatus is moved in diaphragm seal, the lubricating grease in the parcel region is scratched first to be taken away, and closes on parcel area
Lubricating grease in the groove not being flattened in domain will add to equipment surfaces, and then as apparatus work adds to parcel area
Domain.It is B in the inner width of the groove of sealing lip close region in a kind of optional scheme1, wherein 0.5mm≤B1≤
1mm.When the inner width of the groove of sealing lip close region is less than 0.5mm, groove structure is difficult to be manufactured；And groove is interior
Portion's width is bigger, and depot fat effect is poorer；Research shows that its depot fat effect is preferable as inner width≤1mm of groove.It is described recessed
Lubrication insecure problem described in the depot fat improved effect of groove background.Help to reduce the stick-slip described in background.
The side wall 142 has the effect of the reinforcement described in similar background, and all side walls 142 strengthen sealing lip jointly
The axial extensional rigidity of close region；And the side wall 142 does not increase hoop rigidity while increase axial extensional rigidity,
Therefore do not increase hoop clamp force while increase axial rigidity, can effectively reduce stick-slip described in background.Wrapped in this example
Containing 16 side walls 142, but more or less side walls can also play a part of the axial extensional rigidity of increase.
In summary, the groove has increase ring girth, reduces parcel region, reduces between apparatus and diaphragm seal
Real contact area, improves lubricating reliability, increases the functions such as axial extensional rigidity, so as to the larger reduction friction resistance
Power and reduction stick-slip, comfortableness is applied while also reducing the probability for occurring varus and improving.
During using major diameter apparatus, sealing lip close region, particularly described parcel regional stress high concentration.This area
Technical staff be readily appreciated that, nearer it is to its hoop strain (stress) of the region of sealing lip bigger.Having illustrated above can not
The hoop strain (stress) of sealing lip is reduced using the method for increase ring girth, but area can be closed on by increasing sealing lip
The mode of the ring girth in domain reduces the hoop strain (stress) of sealing lip close region；And be necessary quickly to increase close
Seal the ring girth of lip close region the hoop strain (stress) of sealing lip close region is quickly decreased to close to zero.
Illustrate that the side wall 142 plays a part of increasing ring girth above, the side wall 142 is extended laterally outward from sealing lip
When the increased speed of its width it is more fast, the ring girth of sealing lip close region is advanced the speed faster, i.e., foregoing angle theta value
Bigger, then the ring girth of sealing lip close region is advanced the speed faster.In a kind of alternative, the groove 140 it is several
What shape is designed to comply with following formula：
Wherein：
The angle of θ=between two sides of the side wall of the groove of sealing lip close region
The bus of the main body turret wall of α=sealing lip close region and the angle (guide angle) of transverse plane
Arctan=arctan functions
Cos=cosine functions
π=pi
R=radiuses
RiThe maximum radius for the operating theater instruments that=design passes through diaphragm seal
R0The radius of=sealing lip
The number of P=grooves.
Rational θ values cause the ring girth of sealing lip close region quickly to increase.And it can be seen from above-mentioned formula, generally
RiAnd R0It is definite value；And variable α, the increased speed of P and R joint effect ring girths.0 °≤α≤50 ° are generally chosen, pass through reason
Show by analysis and correlative study, reduce the value of the guide angle α, be conducive to reducing the length in the parcel region, but it is too small
Guide angle α will sacrifice diaphragm seal steering capability, it is thus determined that during α values should on the premise of guidance quality is met as far as possible take compared with
Small value.Usual 2.5mm≤R≤(Ri+R0)/2.R values, which are less than 2.5mm, then causes the transitional region at sealing lip too big；R takes
Value is more than (Ri+R0)/2 item cause to increase the DeGrain of sealing lip close region ring girth reduction hoop clamp force.α, P and R
Reasonable value both can guarantee that good guidance, can make again apply maximum gauge apparatus when the parcel region minimize,
Then the hoop clamp force of the sealing lip close region is reduced rapidly to very little or is not present.It has been investigated that, R=3.5, P=
Good guidance quality can be ensured at 8, α=35 °, and reduce the parcel region and hoop clamp force.It is approximate effect or possible
More effective parameter combination can be obtained by theoretical calculation and simple experiment checking.
The design of the groove, as long as meeting the essence of above-mentioned formula, so that it may be considered to substantially conform to above-mentioned formula.Example
Such as, those skilled in the art are readily apparent that, by the main body turret wall 138, and lower wall 141 or side wall 142 are designed to non-linear song
Face；Or main body turret wall 138, lower wall 141 or side wall 142 be deliberately designed to complicated multiaspect Blending surfaces；The institute formed
State intersection and can not be straight line, but as long as two intersection is from entirety, it is substantially conformed in the angle of sealing lip close region
Above-mentioned formula, then it is assumed that without departing from scope of the present utility model.
The region that sealing lip close region belongs to stress high concentration has been elaborated above, and the sealing lip closes on area
Strain (stress) outside domain is relatively small.As long as the groove of the sealing lip close region substantially conforms to above-mentioned formula.
Groove outside sealing lip close region may not necessarily meet above-mentioned formula.In sealing lip sealing lip close region in this example
Outside, the side wall 142 is the face domain for extending laterally outward and becoming narrow gradually that both sides are limited；I.e. sealing lip close region it
Outside, the depth of the groove 140 quickly reduces, and does not meet above-mentioned formula.Those skilled in the art are necessarily it is appreciated that so recessed
Groove design had both ensured that the groove had increase ring girth, reduced parcel region parcel region, reduce apparatus and diaphragm seal it
Between real contact area, improve lubricating reliability, the function such as axial extensional rigidity of increase；Significantly simplify mould again to set
Meter and diaphragm seal processing and manufacturing efficiency is improved, and reduce the space that seal assembly transverse shifting is occupied, so as to by puncture outfit
Be sized to it is smaller.
Figure 14-17 it is careful depict second embodiment diaphragm seal 230 of the present utility model.The diaphragm seal 230 is wrapped
Include distal bore 233, sealing lip 234, sealed wall 235 and flange 236.The remote stomidium 233 is formed by sealing lip 234.It is described
The one end of sealed wall 235 connects sealing lip 234 and other end flange connector 236.The diaphragm seal 230 has proximal end face and distal end
Face.The axis for defining the sealing lip 234 is 258.Define the transverse plane 259 perpendicular to axis 258.
The sealed wall 235 includes main body turret wall 238 and multiple grooves 240.The groove 240 is at sealing lip 234
Start to extend laterally outward, and in sealing lip close region, the depth of the groove 240 gradually increases along sealing lip axial direction
Greatly.The proximally facing face of opening of the groove 240.In sealing lip close region, the multiple groove 240 returns the main body
Turn wall 238 and be approximately divided into some.I.e. described sealed wall 235 is around close by main body turret wall 238 and multiple grooves 240
Envelope 234 is with the seamless seal of approximate conical fashion arrangement form.The sealed wall 235 of this example is linear comprising 8
Groove, but greater number or fewer number of or nonlinear groove can also be used.The section of the groove is approximate U
Type.
The groove 240 includes lower wall 241, and side wall 242, the first skew wall 243 and the second skew wall 244 are constituted.The side wall
242 one side is crossed to form intersection 245a, 245b with the main body turret wall 238；The another side of the side wall 242 with it is described under
Wall 241 is crossed to form intersection 246a, 246b；3rd side of the side wall 242 is crossed to form intersection with first skew wall 243
247a, 247b；4th side of the side wall 242 is crossed to form intersection 248a, 248b with second skew wall 244.The lower wall
241, first skew wall 243 and second skew wall 244 formation one are approximate step-like.Define the intersection 245a
(245b) and transverse plane 159 angle are κ, 90 ° of referred to as guide angle κ and 0≤κ ＜.Define the intersection 245a and 246a (or
245b and 246b) angle that is crossed to form is γ.The intersection point (i.e. the summit at γ angles) of two intersection may have sealing lip
On 234；Or the virtual extended line of two intersection intersects at the inner side of sealing lip 234.
Therefore in sealing lip close region, the side wall 242 is laterally outward prolonging since sealing lip 234 for both sides restriction
Stretch and gradually broadening face domain.And away from sealing lip close region, first quick reduce keeps constant to the width of the side wall 242 again
Extend to flange.When i.e. described groove 240 is extended laterally outward, sealing lip close region depth of groove along sealing lip
The gradually increase of axis direction, but outside sealing lip close region, its depth is quickly decreased to parallel again after a certain depth prolong
Extend flange；I.e. described groove 240 is approximate step-like.In sealing lip close region, the groove 240 is essentially identical to institute
State groove 140；The two is differed only in outside sealing lip close region.The step-like groove 240, which helps to reduce, to be inserted
Overall diastole deformation outside sealing lip close region during major diameter apparatus.Because the step-like groove 240 has platform
The side 243 of scalariform, can strengthen the axial extensional rigidity of sealed wall 235 to reduce stick-slip.Meanwhile, when varus occurs for diaphragm seal
When, step-like groove 240 has the obvious effect for reducing real contact area between apparatus and diaphragm seal.Likewise, institute
State other associated advantages that groove 240 possesses the groove 140.In an optional scheme, the angle γ and guide angle κ
Also foregoing θ angle formulas are approximately met so that the groove increases ring girth and (θ of aforementioned formula replaced with γ, is used faster
κ replaces the α of aforementioned formula).
Figure 18-21 it is careful depict the 3rd embodiment diaphragm seal 330 of the present utility model.The diaphragm seal 330 is wrapped
Include distal bore 333, sealing lip 334, sealed wall 335 and flange 336.The remote stomidium 333 is formed by sealing lip 334.It is described
The one end of sealed wall 335 connects sealing lip 334 and other end flange connector 336.The diaphragm seal 330 has proximal end face and distal end
Face.The axis for defining the sealing lip 334 is 358.Define the transverse plane 359 perpendicular to axis 358.
The sealed wall 335 includes madial wall 341, lateral wall 342, sidewall 34 3 and skew wall 344.The madial wall 341
The flange 336 is extended laterally to since sealing lip 334；The lateral wall 342 extends laterally to institute since sealing lip 334
State skew wall 344 and the skew wall 344 extends to flange 336.Intersect shape with the madial wall 341 in first side of the sidewall 34 3
Into intersection 345a, 345b；Lateral wall 342 described in second side of the sidewall 34 3 is crossed to form intersection 346a, 346b；The side
3rd side of wall 343 is crossed to form intersection 347a, 347b with the skew wall 344.Described two adjacent madial walls 341 intersect shape
Into intersection 348a, 348b.
In the close region of sealing lip 334, described 2 adjacent sidewall 34s 3 and its between the lateral wall 342 intersect
The approximate U-shaped groove in a proximally facing face of opening is formed, U-shaped groove 340 is defined as.The two adjacent phases of the madial wall 341
The approximate V-type fold for forming the proximally facing face of opening is handed over, V-type fold 350 is defined as.
It is rotary shaft with axis 358, it is R to make a radius2The face of cylinder intersect with the madial wall 341, after its friendship
Line makees the section M perpendicular to the madial wall 3412(being rotary shaft with axis 358).The section M2By the diaphragm seal
330 are divided into inboard portion 356 (such as Figure 22) and Outboard Sections 357 (Figure 23).The cut surface M2With the phase of madial wall 341
Friendship forms multistage intersection 351a and 351b.The cut surface M2Multistage intersection 353a and 353b are crossed to form with the sidewall 34 3.
The cut surface M2Multistage intersection 352a and 352b are crossed to form with the lateral wall 342.Multi-section-line 351a, the 352a,
353a forms annular intersection 355a；The multi-section-line 351b, 352b, 353b form annular intersection 355b.The annular intersection
355a and 355b limit section 355.
Such as Figure 22-23, it is clear that the perimeter L of the intersection 355a (355b)2Much larger than 2* π * R2, groove serves increase ring
To the effect of girth.This example includes 8 U-shaped grooves 340 and 8 V-type folds 350.The U types groove 340
Sidewall 34 3 serves the effect of increase sealing lip close region ring girth.The V that intersecting madial wall 341 is formed two-by-two
Type fold 350 also has increase effect of the seal lip ring to girth；But the V-type fold 350 is relative to the groove 340, its
The effect of increase ring girth can be ignored.The V-type fold 350 primarily serves reduction sealing lip real contact area and increase
The effect of diaphragm seal axial direction extensional rigidity.
It will be understood by those skilled in the art that certainly existing some R2Value, makes section M2The Outboard Sections of segmentation
357 since the section 355, and the change of its shape is mainly shown as diaphragm seal partial loop variation and macroscopical displacement, rather than
Overall micro molecule chain lengthening and integrally stretching deformation.And the inboard portion 356, from sealing lip 334 to the section
355, the change of its shape shows the partial loop variation of diaphragm seal and the comprehensive function of integrally stretching deformation.It can be seen that, it is described recessed
Groove increases ring girth, reduce using major diameter apparatus when hoop strain (stress) so that reduce hoop clamp force and
The frictional resistance.
It will be understood by those skilled in the art that sealing lip close region can include countless grooves in theory, but it is real
Due to the ring girth very little of sealing lip on border, too many groove number can not be designed around sealing lip；And it is same occupying
On the premise of dimensional space, U-shaped groove has the ability of bigger increase ring girth than V-type groove.The usual U-shaped groove
Sidewall 34 3 wall thickness >=0.4mm, and inner width >=0.5mm of the groove 340, then diaphragm seal include it is described U-shaped
The number of groove 340 is typically not greater than 8, and the too many U-shaped groove will cause Making mold difficult or production process fraction defective
Improve.Although being difficult to manufacture more grooves, on the madial wall 341 or the lateral wall 342, but it is shallower with projected depth
V-type fold, for reducing real contact area and the axial extensional rigidity of enhancing during application major diameter apparatus.This example it is close
Sealer 330 includes 8 U-shaped grooves 340 and 8 V-type folds 350.
Figure 24-28 it is careful depict the 4th embodiment diaphragm seal 430 of the present utility model.The diaphragm seal 430 is wrapped
Include distal bore 433, sealing lip 434, sealed wall 435 and flange 436.The remote stomidium 433 is formed by sealing lip 434, and institute
It is cylindrical to state sealing lip 434.Described one end of sealed wall 435 connection sealing lip 434 and other end flange connector 436.It is described
Diaphragm seal 430 has proximal end face and distal face.The axis for defining the sealing lip 434 is 458.Definition is perpendicular to axis 458
Transverse plane 459.
The sealed wall 435 includes main body turret wall 438, multiple U-shaped grooves 440 and multiple V-type grooves 450.It is described recessed
Groove 440 and the groove 450 at the sealing lip 234 extend laterally, and in sealing lip close region, the depth of the groove
Gradually increase along sealing lip axis direction.The proximally facing face of opening of the groove.It is described many in sealing lip close region
The main body turret wall 438 is approximately divided into some by individual groove.I.e. described sealed wall 435 is the He of main body turret wall 438
Multiple grooves are around sealing lip 434 with the seamless seal of approximate conical fashion arrangement form.The sealing of this example
Wall 435 includes 4 linear U-shaped grooves and 4 linear V-type grooves, but can also use greater number or fewer number of
Or nonlinear groove.
The U-shaped groove 440 includes lower wall 441, side wall 442 and skew wall 443.One side of the side wall 442 and the master
Body turret wall 438 is crossed to form intersection 445a, 445b；The another side of the side wall 442 is crossed to form intersection with the lower wall 441
446a, 446b；3rd side of the side wall 442 is crossed to form intersection 447a, 447b with the skew wall 443.The skew wall 443 with
Main body turret wall 438 is crossed to form intersection 448a, 448b.The V-type groove 450 includes side wall 451 and skew wall 453.Described two
Adjacent wall 451 is crossed to form intersection 455a, 455b.Intersect shape with the main body turret wall 438 in the another side of the side wall 451
Into intersection 456a, 456b；The side wall 451 is crossed to form intersection 457a, 457b with the skew wall 453.The skew wall 453 with
Main body turret wall 438 is crossed to form intersection 458a, 458b.Although skew wall 443 described in this example and the skew wall 453 relative to
The axis 458 is not parallel, but can be parallel with the axis 458.
It will be understood by those skilled in the art that sealing lip close region can include countless grooves in theory, but actually
Due to the ring girth very little of sealing lip, too many groove number can not be designed around sealing lip；And occupying same size
On the premise of space, U-shaped groove has the ability of bigger increase ring girth than V-type groove.The side of the usual U-shaped groove
Wall thickness >=0.4mm of wall 442, and inner width >=0.5mm of the groove 440, the too many U-shaped groove will cause mould
Manufacture is difficult or production process fraction defective is improved.And the V-type groove, relative to the U-shaped groove, its Making mold is simply passed through
Help and production efficiency is higher.Therefore can be using the diaphragm seal comprising U-shaped groove and V-type groove simultaneously, so as to obtain feature
The excellent and more economical cost diaphragm seal of energy.The diaphragm seal 430 of this example includes 4 U grooves and 4 V-type grooves, the U
Type groove and V-type groove are spaced, but can also use fewer number of U-type groove and V-groove；Or U-shaped groove and V-type
Groove is optionally combined；Or all using V-type groove.Diaphragm seal 430 equally has increase ring girth, reduces parcel region bag
Region is wrapped up in, reduces the real contact area between apparatus and diaphragm seal, improves lubricating reliability, increases the work(such as axial extensional rigidity
Energy, so as to the larger reduction frictional resistance and reduction stick-slip, is answered while also reducing the probability for occurring varus and improving
Use comfortableness.
Those skilled in the art are it is readily conceivable that rational round-corner transition can avoid stress concentration or cause some regions
Deformation is easier.Because the size of diaphragm seal is smaller, especially sealing lip close region is smaller, so small chi
Very little, chamfering is different, then the profile of diaphragm seal seems to differ greatly.Such as Figure 28 depicts the vertical of the non-rounding of diaphragm seal 430
Body figure, and Figure 29 depicts the stereogram after the rounding at the same visual angle of diaphragm seal 430.Obviously Figure 28 is more pure and fresh gives expression to
Constitute the relation between each geometric element of seal 430.In order to clearly show the geometrical relationship between an element, this reality
With the example of new description, usually remove the figure after fillet.
Many different embodiments of the present utility model and example are had shown and described.One of this area is common
Technical staff, on the premise of the utility model scope is not departed from, can make suitable by suitably modified to methods described and apparatus
Answering property is improved.Used in such as example in the utility model the protection chip architecture that is disclosed in United States Patent (USP) US7789861 and
Its fixed form, but utility model patent US5342315, US7988671 can also be authorized using the U.S., or U.S. utility is new
The protection chip architecture that type application US20050131349A1 is disclosed；Or the fixed form of screening glass is done into simple adaptation；
Protection chip architecture can also not included under some application scenarios.Such as approximate U-type groove and approximate V-groove described in this example,
Its shape can not be restricted to and be necessary for U-shaped or V-type.The groove is for example repeatedly mentioned in the utility model to open at sealing lip
Beginning extends laterally outward, and it is straight line that so-called " extending laterally outward ", which is not restricted to it to extend track, described laterally outward to prolong
Track when stretching can also be helix, broken line, the curve such as multi-section circular arc line.For example in example of the present utility model retouch in detail
Stated the position relationship and its intersection of each intersection of the composition groove, it would however also be possible to employ increase curved surface formation multiaspect splicing or
Person makes its intersection and groove topography seem there is larger difference with example by the way of high-order curved surface, but as long as overall meet this
The thought of utility model, is still believed that without departing from scope of the present utility model.Several kinds of amendment schemes are referred, for
For those skilled in the art, other amendment schemes are also what is be contemplated that.Therefore scope of the present utility model should be according to
Accessory claim, while be understood not to the structure for being shown and being recorded by specification and accompanying drawing, material or behavior it is specific
Content is limited.
Claims (10)
1. a kind of puncture outfit diaphragm seal containing groove structure, the diaphragm seal includes proximal openings and remote stomidium and from remote stomidium
The sealed wall of proximal openings is extended to, the sealed wall has proximal end face and distal face, and the remote stomidium is formed by sealing lip, used
In the apparatus for accommodating insertion and sealing is formed, the sealing lip is vertical with the axis comprising central axis and substantially horizontal to put down
Face, it is characterised in that in sealing lip close region, the sealed wall includes main body turret wall and multiple grooves；Face in sealing lip
In near field, each described groove includes two side walls, and the side wall be both sides limit since sealing lip laterally to
The face domain that the width of outer extension gradually increases；The geometry of angle between the both sides of the recess sidewall of sealing lip close region
Relation meets following formula：
Wherein：
The angle of θ=between two sides of the side wall of the groove of sealing lip close region
The bus of the main body turret wall of α=sealing lip close region and the angle (guide angle) of transverse plane
Arctan=arctan functions
Cos=cosine functions
π=pi
R=radiuses
RiThe maximum radius for the operating theater instruments that=design passes through diaphragm seal
R0The radius of=sealing lip
The number of P=grooves.
2. a kind of puncture outfit diaphragm seal containing groove structure as claimed in claim 1, it is characterised in that the groove is close
Seal within lip close region, its depth gradually increases along axis direction, and outside sealing lip close region, its depth
It is gradually reduced.
3. a kind of puncture outfit diaphragm seal containing groove structure as claimed in claim 1, it is characterised in that closed in sealing lip
The depth of groove in region gradually increases, and the depth of groove outside sealing lip close region first reduces and keeps the constant transverse direction of depth again
Stretch out, i.e., described groove is step-like.
4. a kind of puncture outfit diaphragm seal containing groove structure as claimed in claim 1, it is characterised in that section of the groove
Face shape is U-shaped.
5. a kind of puncture outfit diaphragm seal containing groove structure as claimed in claim 1, it is characterised in that section of the groove
Face shape is V-type or a portion is U-shaped and another part is V-type.
6. a kind of puncture outfit diaphragm seal containing groove structure as claimed in claim 4, it is characterised in that the groove is 8
It is individual.
7. a kind of puncture outfit diaphragm seal containing groove structure as claimed in claim 4, it is characterised in that the groove it is interior
Portion width B, wherein 0.5mm≤B≤1mm.
8. a kind of puncture outfit diaphragm seal containing groove structure as claimed in claim 1, it is characterised in that the radius R's
Span：2.5mm≤R≤(Ri+R0)/2。
9. a kind of puncture outfit diaphragm seal containing groove structure as claimed in claim 1, it is characterised in that also including with it is described
The flange that the extension of main body turret wall is intersected or intersected simultaneously with main body turret wall and groove extension, and extended to from flange
The outside floating part with least one transverse fold of proximal openings.
10. a kind of puncture outfit seal assembly, it is characterised in that including the diaphragm seal as any one of claim 1-8, institute
State seal assembly and also include lower retainer ring, upper retainer ring, protection device, upper shell and upper lid；The diaphragm seal and protection device
It is sandwiched between retainer ring and lower retainer ring；The diaphragm seal also include with the main body turret wall extension intersect or simultaneously with
Main body turret wall and the intersecting flange of groove extension, and there are multiple transverse folds from what flange extended to proximal openings
Outside floating part, the proximal openings of the diaphragm seal are sandwiched between upper shell and upper lid.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620836368.6U CN206453834U (en) | 2016-08-02 | 2016-08-02 | A kind of puncture outfit diaphragm seal and puncture outfit seal assembly containing groove structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620836368.6U CN206453834U (en) | 2016-08-02 | 2016-08-02 | A kind of puncture outfit diaphragm seal and puncture outfit seal assembly containing groove structure |
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| CN206453834U true CN206453834U (en) | 2017-09-01 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018024103A1 (en) * | 2016-08-02 | 2018-02-08 | 成都五义医疗科技有限公司 | Puncture device sealing membrane comprising groove structure |
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2016
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018024103A1 (en) * | 2016-08-02 | 2018-02-08 | 成都五义医疗科技有限公司 | Puncture device sealing membrane comprising groove structure |
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