CN108670501A - A kind of sheath and transport system convenient for recycling intervention apparatus - Google Patents
A kind of sheath and transport system convenient for recycling intervention apparatus Download PDFInfo
- Publication number
- CN108670501A CN108670501A CN201810426808.4A CN201810426808A CN108670501A CN 108670501 A CN108670501 A CN 108670501A CN 201810426808 A CN201810426808 A CN 201810426808A CN 108670501 A CN108670501 A CN 108670501A
- Authority
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- China
- Prior art keywords
- sheath
- recycling
- intervention apparatus
- convenient
- floating piece
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000004064 recycling Methods 0.000 title claims abstract description 38
- 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
- 210000004907 gland Anatomy 0.000 claims description 5
- 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
- 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
- 238000000034 method Methods 0.000 description 5
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression 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
- 238000005516 engineering process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000003860 storage Methods 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
- 239000012528 membrane Substances 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
- 230000000295 complement effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000003618 dip coating Methods 0.000 description 1
- 238000007599 discharging 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
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification 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
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/24—Heart valves ; Vascular valves, e.g. venous valves; Heart implants, e.g. passive devices for improving the function of the native valve or the heart muscle; Transmyocardial revascularisation [TMR] devices; Valves implantable in the body
- A61F2/2427—Devices for manipulating or deploying heart valves during implantation
- A61F2/2436—Deployment by retracting a sheath
Abstract
The invention discloses a kind of sheath convenient for recycling intervention apparatus and use the transport 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 arranged successively along tube body, wherein being connected by getting in touch with muscle between two adjacent floating pieces.Sheath of the present invention by the way that floating piece is arranged, can intervention apparatus position it is bad need recycling when, guide and store intervention apparatus and return in sheath, reduce operation difficulty.
Description
Technical field
The present invention relates to medical instruments field more particularly to a kind of sheath being used to convey intervention apparatus and use the sheath
The transport system of pipe.
Background technology
As shown in FIG. 1 to 3, existing prosthetic heart valve delivery system can be used for heart valve prosthesis prosthese being delivered to
At the annulus of lesion.Transport system includes mainly 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 gland and
Seeker, to load section between gland and seeker, for loading heart valve prosthesis prosthese 5 (including holder and branch
Valve in frame), sheath distal end is equipped with accommodating area 31, and accommodating area 31 has the diameter more 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 and is discharged into blood in vivo；Otherwise when there are artificial heart valves
When the holder point of release inaccuracy of film prosthese 5, need that heart valve prosthesis prosthese 5 is recycled in human body by transport 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 holder for going compression-expansion to open is easy to happen discounting, and compression people cannot be further continued for 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 compliance and rigidity.After increasing spiral coil or net, accommodating area 31
Rigidity increased, but recycling when, recycle taper unfolded state holder when, especially original state when,
Very big power is needed to go compressed stent so as to be slided with coated stent on holder accommodating area 31；Since accommodating area 31 is open
Section be uniform cylinder chamber, cause in the initial state accommodating area 31 slide difficulty in stent outer, reclaimer operation difficulty is higher.
Invention content
The present invention improves the accommodating area distal side of sheath, is conducive to recycle intervention apparatus, reduces operation difficulty,
Improve 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 arranged successively along tube body, wherein being connected by getting in touch with muscle between two adjacent floating pieces.
In the present invention, the end of floating piece proximal lateral and tube wall connects, and the distal side of floating piece can radially outward be put
It is dynamic, when recycle intervention apparatus, guiding sheath of being more convenient for respect to intervention apparatus sliding, the part that intervention apparatus has been discharged into
The storage compression of one step.
Each floating piece along the circumferentially-spaced arrangement of tube body to obtain the degree of freedom expanded outwardly, but in order to improve to intervention apparatus
Radial binding force, between partial floating piece or it is arbitrary two it is adjacent between be connected by getting in touch with 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 improve 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 in tube body axial direction upper edge 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 pieces
The thinner floating piece of item.
Preferably, the floating piece extends in tube body axial direction upper edge curve.
Floating piece can also be 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 is when tube body axial direction upper edge curve extends, 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 floating piece radial direction fluctuating undulate.
Preferably, the floating piece also has circumferential fluctuating while axially extending along tube body.
Such as floating piece circumferential direction fluctuating undulate.
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 it is axially extending (present invention in be interpreted as at least have along the axially extending component of sheath) while,
Both wide can extend, can also width be slightly changed, distal side is slightly narrow to extend out storage intervention apparatus convenient for warp-wise.Such as it floats
The proximal lateral of piece and the width ratio of distal side are 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 the mutation that gradual change can also be stage, 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 thickness of the floating piece is 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 guiding 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 can reduce propelling resistance or improve 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.
Preferably, the floating on piece mutually crosses 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 holder, because there are larger frictional force, and inner layer film or outer membrane to be made peeling occur with floating piece.
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 arbitrary 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, the contact muscle is wide between the adjacent floating piece of residing two or not wide extension.
Muscle sheet is got in touch with as strip, between being connected to two adjacent floating pieces with the placement of integral structure, gets in touch with muscle itself
There can be width variation.
Preferably, being split up area with one or more on the contact muscle.
Preferably, the area that is split up has 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 ensure 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 uses identical or different material with floating piece.
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, in the theca externa and theca interna, one or both extends towards distal side and covers contact muscle.
Theca externa or theca interna covering contact muscle can improve intensity, 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 present invention also provides one kind convenient for recycling intervention apparatus conveying system, including sheath core and is slidably fitted in outside sheath core
The sheath in portion is the gland of the seeker and neighbouring seeker positioned at end in the distal end of sheath core, in seeker and fixation
It is the loading area of accommodating intervention apparatus between head, the sheath includes proximal end sheath and distal end sheath, and the distal end sheath is this
The invention sheath.
Distal end sheath is the side with accommodating area, the prior art can be used as proximal lateral, and non-present invention improves weight
Point.
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, sets 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 larger 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 holder as an example, aorta petal stent expansion power ranging from 240-320mmHg, accordingly
Contact breaking of muscle and tendon corresponding expansive force ranging from 240-320mmHg when splitting.
Sheath of the present invention by be arranged floating piece, can intervention apparatus position it is bad need recycling when, guide and store
Intervention apparatus returns in sheath, reduces operation difficulty.
Description of the drawings
Fig. 1 is prior art transport system structural schematic diagram；
Fig. 2 is the cross section view at A in Fig. 1；
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 holder, 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 implementation mode
Embodiment 1
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 referring to Fig. 4~Fig. 6
Floating piece 7, each floating piece 7 are circumferentially arranged successively, are connected by getting in touch with muscle 8 between two adjacent floating pieces 7.
Casing play and its floating piece of distal side, sheath and transport system are only illustrated in various embodiments of the present invention attached drawing
Rest part can be used the prior art, such as sheath includes proximal end sheath and distal end sheath, and distal end sheath is with being relatively large in diameter
Accommodating area, to wrap up laden intervention apparatus, intervention apparatus can be all kinds of intravascular stents and plugging device etc., this implementation
In example by taking aorta petal holder as an example, including holder 9 and the valve that is arranged inside holder 9.
Accommodating area is three-decker, from outside to inside successively include 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 taper 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 improve axial tension
Ability.Floating piece 7 is exposed to the outside of theca externa and theca interna.
Floating piece 7 also has a radial fluctuating undulate 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 undulate 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 wider than distal end 72, is distally 1 with the width of proximal end ratio:1.1~2, preferably 1:1.2~
1.5, and floating piece 7 is become narrow gradually by proximal lateral to distal side width.
The thickness of floating piece 7 is 0.3~0.4mm, and the 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 8 axial positions having the same of contact muscle are designed between arbitrary 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 ensure still continue to recycle holder.
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 covering contact muscle 8 can not only improve intensity, 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 holder 9 partly to release for distal end sheath especially accommodating area
It puts state and completely disengages the release conditions of holder 9；Before releasing under state, the distal side of floating piece 7, which is taken, sets in sheath core group
The periphery of seeker in part；Since there is holder 9 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 release under state, contact breaking of muscle and tendon resistance to spalling is more than stent expansion power, therefore can fetter holder and be maintained at compression
State.
The normal release in vivo of half release conditions of dropping back i.e. holder 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 can form horn mouth and be conducive to guide support 9, reenters sheath,
If resistance is excessive or is interfered with holder 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 holder 9.
If the theca externa and theca interna of sheath extend and cover contact muscle 8, the inner membrance or outer at 8 position of covering contact muscle
Film when getting in touch with muscle 8 and being broken due to higher compliance, being possible to not yet split, it is also possible to be split up.
In the present invention, the distal side of floating piece can radially outward be swung, when recycling intervention apparatus, guiding sheath of being more convenient for
Opposite intervention apparatus slides, 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 embodiments of the present invention, but the present invention is not limited to this, the technology of this field
Various changes and modifications can be made to the invention by personnel without departing from the spirit and scope of the present invention.Obviously these changes and change
Type should all belong to the present invention claims protection domain protection in.In addition, although having used some specific terms in this specification,
These terms are merely for convenience of description, is not constituted to the present invention any specifically limited.
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 is circumferentially arranged successively along tube body, wherein being connected by getting in touch with muscle between two adjacent floating pieces.
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 distal side of the floating piece and casing play connects.
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
Upper edge 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
Upper edge curve extends.
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 the fluctuating also while extension with radial direction.
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 the fluctuating also while extension with circumferential direction.
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 residing
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 carry 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 that is slidably fitted in outside sheath core, in sheath
The distal end of core is the gland of the seeker and neighbouring seeker positioned at end, is accommodating Jie between seeker and gland
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 any one of them sheath.
20. as claimed in claim 19 convenient for recycling intervention apparatus conveying system, which is characterized in that the distal end sheath has
Completely state, half release conditions of expose portion intervention apparatus and intervention apparatus is completely disengaged before the release of cladding loading area
Release conditions；
Before releasing under state, the distal side of the floating piece, which is taken, sets 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 larger caliber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810426808.4A CN108670501B (en) | 2018-05-07 | 2018-05-07 | Sheath tube convenient for recovering interventional instrument and conveying system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810426808.4A CN108670501B (en) | 2018-05-07 | 2018-05-07 | Sheath tube convenient for recovering interventional instrument and conveying system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108670501A true CN108670501A (en) | 2018-10-19 |
| CN108670501B CN108670501B (en) | 2023-12-26 |
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| CN201810426808.4A Active CN108670501B (en) | 2018-05-07 | 2018-05-07 | Sheath tube convenient for recovering interventional instrument and conveying system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113367774A (en) * | 2020-07-06 | 2021-09-10 | 杭州启明医疗器械股份有限公司 | Interventional instrument delivery system |
| CN113855335A (en) * | 2021-10-26 | 2021-12-31 | 金仕生物科技（常熟）有限公司 | Distal outer tube easy to pass through arch and conveying system |
| CN116672051A (en) * | 2023-07-21 | 2023-09-01 | 合源医疗器械(上海)有限公司 | Delivery device and medical system |
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| Publication number | Publication date |
|---|---|
| CN108670501B (en) | 2023-12-26 |
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Address after: 310051 311, 3 building, 2 building, 88 Jiangling Road, Binjiang District, Hangzhou, Zhejiang. Applicant after: Hangzhou Qiming Medical Devices Co.,Ltd. Address before: 310051 311, 3 building, 2 building, 88 Jiangling Road, Binjiang District, Hangzhou, Zhejiang. Applicant before: VENUS MEDTECH (HANGZHOU), Inc. |
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