CN209136985U - A kind of sheath and transportation system convenient for recycling intervention apparatus - Google Patents
A kind of sheath and transportation system convenient for recycling intervention apparatus Download PDFInfo
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- CN209136985U CN209136985U CN201820670023.7U CN201820670023U CN209136985U CN 209136985 U CN209136985 U CN 209136985U CN 201820670023 U CN201820670023 U CN 201820670023U CN 209136985 U CN209136985 U CN 209136985U
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- Prior art keywords
- sheath
- recycling
- intervention apparatus
- convenient
- floating piece
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- 238000004064 recycling Methods 0.000 title claims abstract description 37
- 238000007667 floating Methods 0.000 claims abstract description 122
- 210000003205 muscle Anatomy 0.000 claims abstract description 55
- 210000003684 theca cell Anatomy 0.000 claims description 46
- 238000005253 cladding Methods 0.000 claims description 2
- 210000003709 heart valve Anatomy 0.000 description 11
- 238000010586 diagram Methods 0.000 description 6
- 238000001727 in vivo Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 229910001000 nickel titanium Inorganic materials 0.000 description 6
- HLXZNVUGXRDIFK-UHFFFAOYSA-N nickel titanium Chemical compound [Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni] HLXZNVUGXRDIFK-UHFFFAOYSA-N 0.000 description 6
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 210000000709 aorta Anatomy 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 210000002435 tendon Anatomy 0.000 description 3
- 229920002614 Polyether block amide Polymers 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000010963 304 stainless steel Substances 0.000 description 1
- 229910000589 SAE 304 stainless steel Inorganic materials 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 210000004204 blood vessel Anatomy 0.000 description 1
- 210000004027 cell Anatomy 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000003618 dip coating Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 230000003902 lesion Effects 0.000 description 1
- 230000035772 mutation Effects 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 238000004901 spalling Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Prostheses (AREA)
Abstract
The utility model discloses a kind of convenient for recycling the sheath of intervention apparatus and using the transportation system of the sheath, sheath includes tube body, it is equipped with a plurality of floating piece in the distal side of tube body, each floating piece is circumferentially successively arranged along tube body, wherein being connected between two adjacent floating pieces by contact muscle.The utility model sheath by setting floating piece, can intervention apparatus position it is bad need to recycle when, guide and store intervention apparatus and return in sheath, reduce operation difficulty.
Description
Technical field
The utility model relates to medical instruments fields more particularly to a kind of for conveying the sheath and use of intervention apparatus
The transportation system of the sheath.
Background technique
As shown in FIG. 1 to 3, existing prosthetic heart valve delivery system can be used for for heart valve prosthesis prosthese being delivered to
At the annulus of lesion.Transportation system mainly includes handle 1, and the heart valve prosthesis that handle 1 is used to control positioned at system distal end is false
Body is unfolded and recycling, is equipped with sheath core assembly 4 in handle and is slidably fitted in the sheath of sheath core assembly periphery, outside sheath also
Casing 2 equipped with protection blood vessel.
Sheath includes thinner proximal end sheath and thicker distal end sheath.4 distal end of sheath core assembly be equipped with fixing head and
Seeker, to load section between fixing head and seeker, for loading heart valve prosthesis prosthese 5 (including bracket and branch
Valve in frame), sheath distal end is equipped with accommodating area 31, and accommodating area 31 has the diameter greater than proximal part 32, for use in packet
Wrap up in the heart valve prosthesis prosthese 5 for being loaded in and loading on section；When in use, by the control of handle, when relative to sheath core group
When part 4 withdraws sheath, heart valve prosthesis prosthese 5 is exposed in vivo and is discharged into blood；Otherwise when there are artificial heart valves
When the bracket point of release inaccuracy of film prosthese 5, need that heart valve prosthesis prosthese 5 is recycled in human body by transportation system,
Sheath moves ahead relative to sheath core assembly 4 at this time, and the accommodating area 31 of sheath distal end wraps up heart valve prosthesis prosthese 5 and enters loading
Section recycles heart valve prosthesis prosthese.
In existing operation, accommodating area 31 is made of PTFE, whole more soft, in removal process, due to accommodating
Area 31 is softer, and when bracket for going compression-expansion to open is easy to happen discounting, cannot be further continued for compression people if the accumulation that occurs to give a discount
Work heart valve bracket causes recycling to fail.
In the prior art in order to increase the rigidity of accommodating area 31, increase casing play 6 in the side wall of accommodating area 31, sheath exists
Part in casing play 6 is theca interna 311, is theca externa 312 in the part of 6 outer wall of casing play.
Casing play 6 can be cut by Nitinol pipe form or be woven by nitinol alloy wire or the helical form that is entwined or
It is netted；It either cuts or weaves, be required to consider flexibility and rigidity.After increasing spiral coil or net, accommodating area 31
Rigidity increased, but recycling when, recycle taper unfolded state bracket when, especially original state when,
Very big power is needed to go compressed stent, so that accommodating area 31 is slided on bracket with coated stent；Since accommodating area 31 is open
Section is uniform cylinder chamber, cause in the initial state accommodating area 31 in stent outer slide difficulty, reclaimer operation difficulty is higher.
Utility model content
The utility model improves the accommodating area distal side of sheath, is conducive to recycle intervention apparatus, reduces operation
Difficulty improves safety.
A kind of sheath convenient for recycling intervention apparatus, including tube body are equipped with a plurality of floating piece in the distal side of tube body, each floating
Movable plate is circumferentially successively arranged along tube body, wherein being connected between two adjacent floating pieces by contact muscle.
In the utility model, the end of floating piece proximal lateral and tube wall is connected, the distal side of floating piece can radially to
Outer swing when recycling intervention apparatus is more convenient for that sheath is guided to slide with respect to intervention apparatus, the portion that intervention apparatus has been discharged
Divide further storage compression.
Each floating piece along the circumferentially-spaced arrangement of tube body to obtain the freedom degree expanded outwardly, but in order to improve to intervention apparatus
Radial binding force, between partial floating piece or it is any two it is adjacent between be connected by contact muscle.
Preferably, the tube body has the accommodating area of accommodating intervention apparatus, it is three-decker at accommodating area position, by outer
To interior successively including theca externa, casing play and theca interna, the distal side connection of the floating piece and casing play.
Casing play can be cut by Nitinol pipe and form or be woven by nitinol alloy wire, such as in the shape of a spiral or net
Shape；Casing play also can be used 304 stainless steel tubes and cut；The theca externa, theca interna are polymer material, such as adopt respectively
With Elasthane, Pe11ethane, Pebax or Grilamide etc. with greasy property.
Preferably, the floating piece is structure as a whole with casing play.
Integral structure molding easy to process, can also be improved axial tensile capacity.
The floating piece is exposed to the outside of theca externa and theca interna.I.e. floating piece itself be completely disposed in theca externa and
The outside of theca interna, it is smooth in order to allow offer sheath to walk in vivo, as further preferred, the theca externa and theca interna
In, one or both extends towards distal side and covers at least part of floating piece.
As further preferred, in the theca externa and theca interna, one or both extends straight floating piece towards distal side
Distal side, and all cover floating piece in corresponding side.
The theca externa and theca interna are integrated in the mutual dip-coating in interval position or bonding of floating piece or hot melt.
Preferably, the floating piece is on tube body is axial along linear extension.
Floating piece can be the vertical bar with one fixed width axially extended, and the width of each floating piece in the circumferential can be with
It is identical or different, such as it is spaced apart a plurality of wider floating piece, one or more is arranged between adjacent two wider floating piece
The thinner floating piece of item.
Preferably, the floating piece extends on tube body is axial along curve.
Floating piece is also possible to extend along irregular path in tube body axial direction, in shape, wide can both extend,
Can be while axially extending, width changes, and width can be complementary on different parts for adjacent floating piece, to avoid
Interference.Floating piece on tube body is axial along curve when extending, for example, by using modes such as camber line, helix or broken lines.
Preferably, the floating piece also has radial fluctuating while axially extending along tube body.
It is radial rise and fall can gap stronger radial binding force is applied to intervention apparatus, compress and store intervention apparatus,
Such as radially fluctuating is wavy for floating piece.
Preferably, the floating piece also has circumferential fluctuating while axially extending along tube body.
Such as circumferentially fluctuating is wavy for floating piece.
Preferably, the outside turnup in distal end of the floating piece.
Outside turnup refers to general trend, and the trend that each position is not required for during turnup is completely the same, from starting to turn over
For volume until end is directed toward, the turnup angle relative to sheath axis is 180~360 degree.End position especially at the far end is preferred
Using cambered surface, avoid receiving unnecessary resistance when walking advance in vivo, and the risk stabbed can be eliminated.
Preferably, the proximal lateral of the floating piece is wider than distal side.
Floating piece in the utility model axially extending (being interpreted as at least with the component axially extending along sheath)
Meanwhile wide can both extend, it can also be slightly changed with width, distal side is slightly narrow convenient for through to extending out storage intervention apparatus.Example
It such as floats the proximal lateral of piece and the width ratio of distal side is 1:1.1~2, preferably 1:1.2~1.5.
Preferably, the floating piece is become narrow gradually by proximal lateral to distal side width.
The trend to narrow can be gradual change and be also possible to interim mutation, such as the floating piece by proximal lateral to distal end
Side width is steps to narrow.
Preferably, the trend speed to narrow is related with lower angle, i.e., in the opposite sides of the described floating piece, each side
The line of proximal end and distal end is line of reference, and the angle of two line of reference is 15 degree.
Preferably, the thickness of the floating piece is identical as casing play.
Optionally, the floating piece with a thickness of 0.3~0.4mm.
Preferably, length of the floating piece in tube body axial direction is 3~7mm.
The length of adaptation is more advantageous to guidance storage intervention apparatus, preferably, the floating piece is in tube body axial direction
Length is 4~6mm.
Preferably, the distal side of the floating piece has the edge of arc.
The edge of arc, which can both reduce propelling resistance, can also be improved safety.
Preferably, the floating piece is 6~10.
As a further preference, each floating piece is in circumferential uniformly arrangement.As for the gap of adjacent floating movable plate, can with it is floating
The width of movable plate is roughly the same, when not considering change width, if the gap of adjacent floating movable plate and floating piece is of same size, respectively
Floating piece is 180 degree in the summation of circumferential cornerite.
In view of the variation of gap width, optionally, each floating piece is 150~300 degree in the summation of circumferential cornerite.
It mutually crosses preferably, the floating on piece is equipped with through-hole, the theca externa and theca interna at through-hole position.
The setting of through-hole is to prevent from recycling in order to enable floating piece and theca externa and theca interna are preferably adhered together
When bracket, because there are biggish frictional force, and inner layer film or outer membrane and floating piece to be made peeling occur.
Preferably, the through-hole is proximally multiple to being distally placed with.Such as the through-hole is uniformly placed with 3~6.
The shape of the through-hole is round, ellipse；Each shape of through holes of same floating on piece is identical or different；Difference is floating
The shape of through-hole on movable plate is identical or different.
In more floating pieces, it is designed with contact muscle between preferably any two adjacent floating pieces, as further preferred,
All contact muscle axial position having the same.Such as in tube body axial direction, the contact muscle is in the middle part of floating piece.
Preferably, contact muscle wide or not wide extension between the adjacent floating piece of locating two.
Muscle sheet is got in touch with as strip, is connected between two adjacent floating pieces with the placement of integral structure, muscle itself is got in touch with
There can be width variation.
Preferably, being split up area with one or more on the contact muscle.
It is split up area preferably, described there is relatively thin thickness and/or relatively narrow relative to other adjacent parts of contact muscle
Width.
It can be when expanding the limit or being interfered with intervention apparatus using relatively thin thickness and/or relatively narrow width
Fracture, to guarantee still continue to recycle.
Preferably, the middle part for being split up area and being in contact muscle length direction.Or it is described be split up the neighbouring contact muscle in area with
The connecting portion of floating piece.
Optionally, the contact muscle is arc, and arc top is convex to the proximal lateral of floating piece.
Between two adjacent floating pieces, contact muscle is 1~3.
The contact muscle is structure as a whole with floating piece.Or the contact muscle is the seperated knot being fixed to each other with floating piece
Structure, fixed form are welding, binding or bonding.
The contact muscle and floating piece use identical or different material.
When the contact muscle and floating piece are the separate structure being fixed to each other, optionally get in touch with muscle itself and pass through or bind
In floating on piece, preferably, the floating on piece is equipped with location hole or locating slot for fixing or passing around contact muscle.
Preferably, one or both extends towards distal side and covers contact muscle in the theca externa and theca interna.
Intensity can be improved in theca externa or theca interna covering contact muscle, since theca externa or theca interna are generally flexible material
Material, the deformation quantity allowed is larger, therefore gets in touch with breaking of muscle and tendon and can still keep coating and fettering contact muscle when splitting, and avoids contact muscle turned-out
It sticks up to form security risk.
The utility model also provides a kind of convenient for recycling intervention apparatus conveying system, including sheath core and is slidably fitted in sheath
Sheath outside core is the fixing head of the seeker and neighbouring seeker positioned at end in the distal end of sheath core, in seeker and
It is the loading area of accommodating intervention apparatus between fixing head, the sheath includes proximal end sheath and distal end sheath, the distal end sheath
For sheath described in the utility model.
Distal end sheath is to have the side of accommodating area, the prior art can be used as proximal lateral, not the utility model changes
Into emphasis.
Preferably, the distal end sheath has state, expose portion intervention apparatus before the release of cladding loading area completely
Half release conditions and completely disengage the release conditions of intervention apparatus；
Before releasing under state, the distal side of the floating piece, which is taken, is set in the periphery of seeker；
The direction of motion of half release conditions according to sheath relative to sheath core is divided into the recession of sheath proximally half
Towards half release conditions of recycling of distal movement, the contact muscle, which has, to be recycled under half release conditions for release conditions and sheath
It is split up state or is not split up state.
Preferably, the distal end sheath opposite proximal end sheath has biggish caliber.
One or both of the theca externa and theca interna extend towards distal side and cover contact muscle, covering contact muscle
The inner membrance or outer membrane at position have being split up state or be not split up state in the case where recycling half release conditions.
The floating piece also has radial fluctuating while axially extending along tube body；The intervention apparatus has hollow out
Position, the relief fabric of radial inward is in the hollow out position of intervention apparatus under state before discharging.
Intervention apparatus is by taking aorta petal bracket as an example, and aorta petal stent expansion power range is 240-320mmHg, accordingly
Getting in touch with corresponding expansive force range when breaking of muscle and tendon is split is 240-320mmHg.
The utility model sheath by setting floating piece, can intervention apparatus position it is bad need to recycle when, guidance simultaneously
Storage intervention apparatus returns in sheath, reduces operation difficulty.
Detailed description of the invention
Fig. 1 is prior art transportation system structural schematic diagram；
Fig. 2 is the cross section view in Fig. 1 at A；
Fig. 3 is accommodating area sectional view in Fig. 1；
Fig. 4 is by 1 middle skeleton layer of embodiment and the structural schematic diagram of the floating piece connected；
Fig. 5 is the schematic diagram of the part of floating piece in Fig. 4；
When Fig. 6 is recycling bracket, floating piece and support assorted relation schematic diagram；
Fig. 7 is by 2 middle skeleton layer of embodiment and the structural schematic diagram of the floating piece connected；
Fig. 8 is by 3 middle skeleton layer of embodiment and the structural schematic diagram of the floating piece connected.
Specific embodiment
Embodiment 1
Referring to fig. 4~Fig. 6, it is in the present embodiment compared with the existing technology, main to improve that be that sheath distal end is provided with a plurality of
Floating piece 7, each floating piece 7 are circumferentially successively arranged, and are connected between two adjacent floating pieces 7 by contact muscle 8.
The floating piece of casing play and its distal side, sheath and conveying are only illustrated in various embodiments of the utility model attached drawing
The prior art can be used in the rest part of system, such as sheath includes proximal end sheath and distal end sheath, and distal end sheath has diameter
Biggish accommodating area, to wrap up laden intervention apparatus, intervention apparatus can be all kinds of intravascular stents and plugging device etc., this
In embodiment by taking aorta petal bracket as an example, including bracket 9 and the valve being arranged in inside bracket 9.
Accommodating area is three-decker, from outside to inside successively includes theca externa, casing play and theca interna, each floating piece 7 with
Casing play integral structure and the distal side for being located at casing play.
Casing play is tubular structure, is formed by the cutting of Nitinol pipe or is woven by nitinol alloy wire, proximal end 61 is in
The cone cell of closing in, hole 62 can not only increase flexibility, and casing play and inside and outside film layer can also be made preferably adhered together.Outside
Film layer, theca interna are that Elasthane, Pe11ethane, Pebax or Grilamide etc. with greasy property can be respectively adopted.
The present embodiment floating piece 7 is structure as a whole with casing play 6, and molding easy to process can also be improved axial tension
Ability.Floating piece 7 is exposed to the outside of theca externa and theca interna.
Floating piece 7 also has radial fluctuating wavy while axially extending along sheath tube body, floating piece 7 it is remote
End side has turned-out volume structure 71, relative to sheath axis, preferably 270~360 degree of turnup angle.It avoids before walking in vivo
Into when receive unnecessary resistance, and the risk stabbed can be eliminated.Radial fluctuating is wavy or volume structure of turning up can lead to
The prior arts such as heat processing technique are crossed to be formed.
The proximal end 73 of floating piece 7 is 72 wider than distal end, is distally 1:1.1~2 with the width of proximal end ratio, and preferably 1:1.2~
1.5, and floating piece 7 is become narrow gradually by proximal lateral to distal side width.
Floating piece 7 with a thickness of 0.3~0.4mm, length in tube body axial direction is 3~7mm, and float piece in the present embodiment
7 are circumferentially uniformly being placed with 8.
Contact muscle 8, all contact muscle 8 axial position having the same are designed between any two adjacent floating pieces 7.
Contact muscle 8 can be broken when diffusing into the limit outside floating piece 7, and further increase floating piece 7 extends out degree.
In order to guide contact muscle 8 to be broken in designated position, gets in touch on muscle and be split up area 81 with one or more, be split up area 81 relative to connection
Other adjacent parts of network muscle have relatively thin thickness and/or relatively narrow width.Utilize relatively thin thickness and/or relatively narrow width
It can be broken when expanding the limit or being interfered with intervention apparatus, to guarantee still continue to recycle bracket.
Contact muscle 8 be structure as a whole with floating piece 7, in other embodiment, in theca externa and theca interna, one or
The two extends towards distal side and covers contact muscle 8, especially theca externa, and intensity not only can be improved in covering contact muscle 8, but also
It can still keep coating and fetter contact muscle 8 when getting in touch with muscle 8 and being broken, avoid contact muscle 8 is turned-out to stick up to form security risk.
There is state before the release of complete covered stent 9, expose portion bracket 9 partly to release for distal end sheath especially accommodating area
It puts state and completely disengages the release conditions of bracket 9；Before releasing under state, the distal side of floating piece 7, which is taken, is set in sheath core group
The periphery of seeker in part；Since bracket 9 has hollow out position, the position of the radial convex of floating piece 7 can be in hollow out
Position avoids excessive influence the walking in vivo of outer diameter.
The direction of motion of half release conditions according to sheath relative to sheath core is divided into the recession of sheath proximally half and discharges
Half release conditions of recycling of state and sheath towards distal movement.
Before discharging under state, contact breaking of muscle and tendon resistance to spalling is greater than stent expansion power, therefore can fetter bracket and be maintained at compression
State.
The normal release in vivo of half release conditions of dropping back i.e. bracket 9, can't generally cause to get in touch with the fracture of muscle 8, need back
When revenue and expenditure frame 9, relative to sheath core sheath pipe towards distal movement, in conjunction with Fig. 6, portion support 9 has been expanded to taper, floating piece at this time
The extending out of the Eversible structure and floating piece 7 itself of 7 distal ends, which will form horn mouth and be conducive to guide support 9, reenters sheath,
If resistance is excessive or interferes with bracket 9, contact muscle 8 is broken, and each floating piece 7 can further increase the degree of extending out, with
Continue removal process, until by the income accommodating area completely of bracket 9.
If the theca externa and theca interna of sheath extend and cover contact muscle 8, the inner membrance or outer at covering contact 8 position of muscle
Film is possible to not yet split, it is also possible to be split up due to flexibility with higher when getting in touch with muscle 8 and being broken.
In the utility model, the distal side of floating piece can radially outward be swung, and when recycling intervention apparatus, be more convenient for guiding
Sheath is slided with respect to intervention apparatus, and compression is further stored in the part that intervention apparatus has discharged.
Embodiment 2
Referring to Fig. 7, embodiment 2 is with embodiment 1 the difference lies in that casing play and floating piece are cut using stainless steel tube
It forms, floating piece 7 is straight line in axially extending path, and there is no generate bending.
Embodiment 3
Referring to Fig. 8, embodiment 3 and embodiment 2 the difference lies in that be additionally provided with through-hole 74 on floating piece 7, theca externa and
Theca interna mutually crosses at through-hole position can be preferably adhered together, prevents peeling.Through-hole is proximally arranged to distal end
It is furnished with multiple, the shape of through-hole is round or oval.
Disclosed above is only specific embodiment of the utility model, but the utility model is not limited to this, ability
The technical staff in domain can carry out various modification and variations without departing from the spirit and scope of the utility model to the utility model.
These obvious modification and variations should belong in the protection scope protection of the requires of the utility model.In addition, although in this specification
It uses some specific terms, these terms are merely for convenience of description, and it is any special not constitute to the utility model
Limitation.
Claims (21)
1. a kind of sheath convenient for recycling intervention apparatus, including tube body, which is characterized in that be equipped in the distal side of tube body a plurality of floating
Movable plate, each floating piece are circumferentially successively arranged along tube body, wherein being connected between two adjacent floating pieces by contact muscle.
2. the sheath as described in claim 1 convenient for recycling intervention apparatus, which is characterized in that the tube body has accommodating intervention
The accommodating area of instrument, accommodating area position be three-decker, from outside to inside successively include theca externa, casing play and theca interna,
The connection of the distal side of the floating piece and casing play.
3. the sheath convenient for recycling intervention apparatus as claimed in claim 2, which is characterized in that the floating piece is with casing play
Integral structure.
4. the sheath as described in claim 1 convenient for recycling intervention apparatus, which is characterized in that the floating piece is in tube body axial direction
On along linear extension.
5. the sheath as described in claim 1 convenient for recycling intervention apparatus, which is characterized in that the floating piece is in tube body axial direction
On along curve extend.
6. the sheath as claimed in claim 5 convenient for recycling intervention apparatus, which is characterized in that the floating piece is along tube body axis
To extend while also there is radial fluctuating.
7. the sheath as claimed in claim 5 convenient for recycling intervention apparatus, which is characterized in that the floating piece is along tube body axis
To extend while also there is circumferential fluctuating.
8. the sheath as claimed in claim 5 convenient for recycling intervention apparatus, which is characterized in that the distal end of the floating piece is outside
Turnup.
9. the sheath as described in claim 1 convenient for recycling intervention apparatus, which is characterized in that the proximal lateral ratio of the floating piece
Distal side is wide.
10. the sheath as claimed in claim 9 convenient for recycling intervention apparatus, which is characterized in that the floating piece is by proximal lateral
It is become narrow gradually to distal side width.
11. the sheath as described in claim 1 convenient for recycling intervention apparatus, which is characterized in that the floating piece is in tube body axis
Upward length is 3~7mm.
12. the sheath as described in claim 1 convenient for recycling intervention apparatus, which is characterized in that the distal side of the floating piece
Edge with arc.
13. the sheath as described in claim 1 convenient for recycling intervention apparatus, which is characterized in that the floating piece is 6~10
Item.
14. the sheath as claimed in claim 2 convenient for recycling intervention apparatus, which is characterized in that the floating on piece is equipped with logical
Hole, the theca externa and theca interna mutually cross at through-hole position.
15. the sheath as described in claim 1 convenient for recycling intervention apparatus, which is characterized in that the contact muscle is locating
Wide or not wide extension between two adjacent floating pieces.
16. the sheath as described in claim 1 convenient for recycling intervention apparatus, which is characterized in that have one on the contact muscle
Place or many places are split up area.
17. the sheath as claimed in claim 16 convenient for recycling intervention apparatus, which is characterized in that the area that is split up is relative to connection
Other adjacent parts of network muscle have relatively thin thickness and/or relatively narrow width.
18. the sheath as claimed in claim 2 convenient for recycling intervention apparatus, which is characterized in that the theca externa and theca interna
In, one or both extends towards distal side and covers contact muscle.
19. one kind is convenient for recycling intervention apparatus conveying system, including sheath core and the sheath being slidably fitted in outside sheath core, in sheath
The distal end of core is the fixing head of the seeker and neighbouring seeker positioned at end, is situated between seeker and fixing head for accommodating
Enter the loading area of instrument, which is characterized in that the sheath includes proximal end sheath and distal end sheath, and the distal end sheath is wanted for right
Seek 1~18 described in any item sheaths.
20. as claimed in claim 19 convenient for recycling intervention apparatus conveying system, which is characterized in that the distal end sheath has
State, half release conditions of expose portion intervention apparatus and intervention apparatus is completely disengaged before the release of cladding loading area completely
Release conditions；
Before releasing under state, the distal side of the floating piece, which is taken, is set in the periphery of seeker；
The direction of motion of half release conditions according to sheath relative to sheath core is divided into the recession of sheath proximally half and discharges
Towards half release conditions of recycling of distal movement, the contact muscle, which has, recycles being split up under half release conditions for state and sheath
State is not split up state.
21. it is as claimed in claim 19 convenient for recycling intervention apparatus conveying system, preferably, the distal end sheath relative proximity
Hold sheath that there is biggish caliber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820670023.7U CN209136985U (en) | 2018-05-07 | 2018-05-07 | A kind of sheath and transportation system convenient for recycling intervention apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820670023.7U CN209136985U (en) | 2018-05-07 | 2018-05-07 | A kind of sheath and transportation system convenient for recycling intervention apparatus |
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| Publication Number | Publication Date |
|---|---|
| CN209136985U true CN209136985U (en) | 2019-07-23 |
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|---|---|---|---|
| CN201820670023.7U Withdrawn - After Issue CN209136985U (en) | 2018-05-07 | 2018-05-07 | A kind of sheath and transportation system convenient for recycling intervention apparatus |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116250971A (en) * | 2023-05-09 | 2023-06-13 | 杭州启明医疗器械股份有限公司 | Expandable sheath for transcatheter delivery system and delivery system |
-
2018
- 2018-05-07 CN CN201820670023.7U patent/CN209136985U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116250971A (en) * | 2023-05-09 | 2023-06-13 | 杭州启明医疗器械股份有限公司 | Expandable sheath for transcatheter delivery system and delivery system |
| CN116250971B (en) * | 2023-05-09 | 2023-08-11 | 杭州启明医疗器械股份有限公司 | Expandable sheath for transcatheter delivery system and delivery system |
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