CN209548159U - A kind of more piece application operating system of closed self-expanding unit rack - Google Patents

Abstract

A kind of more piece application operating system of closed self-expanding unit rack, including manipulation component portion, the manipulation component portion includes inner sleeve tube assembly, housing tube assembly and Y-connection, it further include the bracket component portion in the manipulation component portion, the bracket component portion includes unit rack described in more piece and multiple anti-jump components for the corresponding unit rack of stable release, and the unit rack and the anti-jump component are set in the inner sleeve tube assembly.There is the utility model single to load simultaneously, the ability that conveys and discharge multiple brackets, and using when be capable of providing and stablize safety, visualization release and speciality with minimal invasive；After implantation, similar bracket is compared, positioning is firm, has lesser human body rejection and lesser blood flow interference.

Description

A kind of more piece application operating system of closed self-expanding unit rack

Technical field

The utility model relates to the field of medical instrument technology, the more piece of specifically a kind of closed self-expanding unit rack is answered Use operating system.

Background technique

Luminal stenosis and blocking, blood vessel scleratheroma, calcification lesion and interlayer etc. are common pipe diseases, are not treated in time It will lead to serious cardio-cerebrovascular, breathing, digestion, uropoiesis and endocrine system damage with operation, jeopardize life when necessary Life.And intraluminal stent art is that this kind of disease for the treatment of is important, even main treatment tool and means.

Traditional support system is compressed in transportation system using single long stent, is then delivered to disease by transportation system Stove.Such as the LIFESTENT and LIFESTENT XL intravascular stent system of common U.S.'s Ahmedabad (CR Bard) in the market System, the support systems such as the Zilver intravascular stent system of U.S. Cook (COOK) authorize the James D. Patent No. of Purdy A kind of support system of the U.S. Patent Publication of US8048140B2.This stent-like system discharges a root long branch for lesion vessels Lesion is completely covered in frame, can theoretically support narrow blood vessel, dredge blockage blood vessel；But lesion is completely covered in long stent, gold Belong to contact area to be also easy to produce serious foreign body reaction greatly and lead to serious vascellum endometrial hyperplasia, and then causes in intravascular stent again Narrow (ISR)；And only include one piece of bracket in this stent-like system, it is unable to satisfy the clinical last feelings for needing more brackets Condition；It when lesion length is greater than stent length, needs to increase again a set of support system, increases patient's operating time and risk. Therefore how to carry out innovation on the basis of existing single tediously long stenter to implant system is the project urgently studied.

Utility model content

The technical purpose of the utility model is to provide a kind of more piece application operating system of closed self-expanding unit rack System makes it while there is single to load, the ability that conveys and discharge multiple brackets, and using when be capable of providing stablize safely, Visualization release and the speciality with minimal invasive；After implantation, similar bracket is compared, positioning is firm, has the rejection of lesser human body Property and lesser blood flow interference.

The specific technical solution of the utility model is as follows: a kind of more piece application operating system of closed self-expanding unit rack System, including manipulation component portion, the manipulation component portion include inner sleeve tube assembly, housing tube assembly and Y-connection, further include setting Bracket component portion in the manipulation component portion, the bracket component portion include unit rack described in more piece and multiple for steady Surely the anti-jump component of the corresponding unit rack is discharged, the unit rack and the anti-jump component are set to the inner sleeve group On part.

Preferably, the unit rack includes main paragraph and the developing mark portion for being connected to described main paragraph one end, institute Main paragraph is stated to be tubular structure and have convenient for the collapsed condition in merging blood vessel and support the swelling state expanded in the blood vessel；It is described Anti-jump component includes the anti-jump ontology being fixed in the inner sleeve tube assembly and is used to be caught on the anti-jump ontology described The matching slot in developing mark portion.

It is connected in bracket circumferential direction and axial direction and organizes integral preferably, the main paragraph is included under collapsed condition Triangular waveform unit, the triangular waveform unit have formed under swelling state octagon closing framework.

Preferably, the triangular waveform unit includes two sections of end to end folding shape ribs, the folding shape rib is successively Including the first muscle section, the second muscle section and third muscle section, the first muscle section, the second muscle section, the third muscle section roll over shape phase It is wavy even to form triangle, two sections of folding shape ribs surround the octagon closing framework.

Preferably, the head end of the first muscle section and the head end of the third muscle section are each provided with connection top section, it is described Second muscle section is equipped with connecting side section relative to octagon closing framework in the outer part.

Preferably, all connection top sections be intervally arranged into the week of bracket along bracket axial direction it is more A concentric circumferences.

Preferably, all connecting side sections be intervally arranged into the week of bracket along bracket axial direction it is more A concentric circumferences.

Preferably, the anti-jump component and the unit rack are arranged in pairs and each pair of anti-jump component and the list First bracket is equidistantly arranged.

It is flared outside the gradual change under swelling state preferably, the other end of the main paragraph has.

Preferably, the length range of the main paragraph is 12 ~ 22mm.

Preferably, being equipped with developing mark object in the anti-jump ontology.

Preferably, said inner tube set component includes tip, distal end developing mark ring, inner tube, proximal end developing mark ring, Central siphon, metal tube and female Luer, the proximal end tip are connect with the distal end developing mark ring, the metal tube proximal end, Said inner tube proximal end is connect with the female Luer, and the metal tube distal end is connect with the central siphon proximal end, the axis Pipe distal end connect with the proximal end developing mark ring, said inner tube distal end and meanwhile with the distal end developing mark ring and the tip The connection of head proximal end, said inner tube wore the metal tube, the central siphon；The metal tube is set on the Y-connection It is interior and can opposite sliding, the inner sleeve tube assembly is set in the housing tube assembly and opposite can slide.

Preferably, the metal tube is equipped with the release mark for the unit rack quantity being released for corresponding reading Remember scale.

Preferably, the unit rack, which is nested with, is being located at the distal end developing mark ring and the proximal end developing mark ring Between said inner tube part on, the anti-jump component is fixedly connected on this and is located at the distal end developing mark ring and the proximal end On said inner tube part between developing mark ring.

Preferably, the central siphon be by it is interior, in, outer 3 layers of woven tube formed.

Preferably, the metal tube proximal end is connected with hand grip.

Preferably, the housing tube assembly includes outer tube, outer tube boot and housing pipe connections, the proximal outer tube is stretched Enter and be connected in the housing pipe connections, the outer tube boot is nested in the outer tube close to its proximal part, described Outer tube sheath proximal end is connect with the housing pipe connections distal end, housing pipe connections proximal end and the Y-connection spiral shell Line connection, the inner sleeve tube assembly are set in the outer tube and can opposite slidings.

Preferably, the outer tube be by it is interior, in, outer 3 layers of woven tube formed.

Preferably, the outer tube boot is flexible conical sheath.

Preferably, the Y-connection includes main siphunculus, being used for and the housing for the main siphunculus distal end is arranged in The hickey of tube assembly connection, the locking for being used to lock or unclamp the inner sleeve tube assembly that the main siphunculus proximal end is set Valve and the flashing valve interface being arranged on the main siphunculus side.

Existing some same stent-like systems are almost all compressed in transportation system using single long stent, and single is only One piece of bracket can be provided, be not able to satisfy the demand for needing more pieces of brackets in single operation；Substantially increase operation time and Risk reduces the validity that bracket uses；Moreover, human vas, tracheae or alimentary canal meander, and to bear surrounding flesh Meat compression, torsion draw high contraction and pulsatile distension and the complicated physiology mechanical environment such as shrink, similar conventional stent system it is single Long stent is generally difficult to bear so changeable physiological environment, is easy to happen bracket fracture, shifts and puncture body lumen etc. and ask Topic；In addition, there is very long and biggish lumen contact area in conventional stent system in single interminable stenter to implant human body, To generate more serious human body rejection, lead to lumen endometrial hyperplasia phenomenon, and this serious endometrial hyperplasia is directly made At in-stent restenosis (ISR) lesion, the therapeutic effect of stenting is influenced；Furthermore after single interminable stenter to implant, due to mistake More implantation contacts area can damage lumen and cause undesirable influence to internal fluid environment, such as affect fluid To the shear stress normal distribution of tube wall and numerical value etc.；Finally, the single tediously long bracket of conventional stent system is when in use, in addition to covering While lid lesion portion lumen, the lumen of some health is also covered, thus the phenomenon that causing unhealthful lumen.

But to overcome above-mentioned problem, not simply by doing big whole system by single bracket cutting or as far as possible Etc. means, it is radial and axial it is found by the applicant that traditional if the supporting structure with sinusoidal waveform coiling is when being divided into multistage Support strength can not effectively keep, structure peace preservation association becomes unstable, can not completely, equably expand, support effect It has a greatly reduced quality；In addition, when being implanted into face of conventional stent cutting multistage, since support shaft all has elasticity energy and list itself upwards The phenomenon that a scale of construction is smaller, and when release will appear the release position inaccurates such as more serious axial spring, this phenomenon causes The probability that blood vessel is even worn out in damage is greatly improved.Through applicant's development test, the unit rack of the utility model is adopted With closed loop design, RF radial supporting force is stronger；It, can be effective for the jewel shape waveform element constituted with octagon closing framework Ground disperses big strain, and by Strain Distribution to side peak, unit has bigger ductility；Compression diameter is small, and is easier pressing The shape of structural unit is kept under contracting state；Anti-pressure ability is strong, and support effect is good；Head end positioning does not have extremely strong offensiveness, Reduce the pressure of positioning；After release, expansion is complete, uniformly, has a preferably positioning shape, unit construct with it is bigger grab it is attached Power.And cooperate the anti-jump component of the unit rack, and with simple and effective structure fusion into entirety, anti-jump component itself It is motionless, and the unit rack can be disconnected when close to release completely or release completely, the position of the unit rack Equally remain unchanged, and after unit rack release, the anti-jump component is to be removed by the hollow portion of the unit rack Human body.

The technological merit of the utility model is specific as follows:

1, single support system includes more piece bracket, and single transportation system intervenes releasable more pieces of implantable or Interventional branch Frame meets the case where primary intervention needs more pieces of brackets, reduces operating time, improve procedure efficiency；

2, more pieces short and small of bracket substitutes one piece of interminable bracket, avoids bracket in complex physiologic mechanical environment lower bracket The case where fracture, displacement, the effect of greatly improving operation；

3, more pieces short and small of bracket substitutes one piece of interminable bracket, using a method for release treatment, non-large area covering Lesion, the lumen for effectively avoiding injury slight with unhealthful lumen and the state of an illness；

4, more pieces short and small of more piece bracket substitutes one piece of interminable bracket, farthest reduces lumen contact area, drop Low foreign body reaction, the phenomenon that mitigating in-stent restenosis (ISR) caused by endometrial hyperplasia in many degree；

5, in support system, more piece bracket is fixed during release using anti-jump component, bracket is effectively avoided and releases The phenomenon that putting spring.

Detailed description of the invention

Fig. 1 is the integral assembling structure schematic diagram of the utility model embodiment；

Fig. 2 is the partial structural diagram of the utility model embodiment；

Fig. 3 is the partial structural diagram of the utility model embodiment；

Fig. 4 is the partial structural diagram of the utility model embodiment；

Fig. 5 is the partial structural diagram of the utility model embodiment；

Fig. 6 is the partial structural diagram of the utility model embodiment；

Fig. 7 is the partial structural diagram of the utility model embodiment；

Fig. 8 is the partial structural diagram of the utility model embodiment；

Fig. 9 is the partial structural diagram of the utility model embodiment；

Figure 10 is the partial structural diagram of the utility model embodiment；

Corresponding each section title is numbered in figure is respectively as follows: 1- bracket component portion, 11- unit rack, 111- developing mark Section is pushed up in point, 112- main paragraph, 1121- the first muscle section, 1122- the second muscle section, 1123- third muscle section, 1124- connection, and 1125- connects Connect side section, the anti-jump component of 12-, 121- matching slot, the anti-jump ontology of 122-, 2- manipulation component portion, 21-Y shape connector, 211- screw thread Interface, 212- flashing valve interface, 213- locking valve, the main siphunculus of 214-, 22- housing tube assembly, 221- outer tube, 222- are managed and protected outside Set, 223- housing pipe connections, 23- inner sleeve tube assembly, 231-tip head, the distal end 232- developing mark ring, 233- inner tube, 234- Proximal end developing mark ring, 235- central siphon, 236- metal tube, 2361- release mark scale, 237- female Luer.

Specific embodiment

Below in conjunction with attached drawing, by specific embodiment, the utility model is described in further detail:

See Fig. 1, a kind of more piece application operating system of closed self-expanding unit rack, including manipulation component portion 2, manipulates Assembly portion 2 includes inner sleeve tube assembly 23, housing tube assembly 22 and Y-connection 21, further includes the branch in manipulation component portion 2 Frame assembly portion 1, structure can be found in Fig. 2 and Fig. 3, and bracket component portion 1 includes that more piece unit rack 11 and multiple stabilizations that are used for discharge The anti-jump component 12 of corresponding unit rack, unit rack 11 and anti-jump component 12 are set in inner sleeve tube assembly 23.Outer tube group Part 22 and inner sleeve tube assembly 23 pass through Y-connection 21 and are joined together to form a complete transportation system.

Fig. 7 is Y-connection 21, and including main siphunculus 214, being used for and housing tube assembly for main 214 distal end of siphunculus is arranged in The hickey 211 of 22 connections, the locking valve for being used to lock or unclamp inner sleeve tube assembly 23 that main 214 proximal end of siphunculus is set 213 and the flashing valve interface 212 that is arranged on main 214 side of siphunculus, by the way of locking valve 213 is squeezed using screw thread rotation.Y Shape connector 21 is the materials such as polyethylene, PVC, ABS resin or silica gel.

Fig. 8 is housing tube assembly 22, including outer tube 221, outer tube boot 222 and housing pipe connections 223, and outer tube 221 is close End is protruded into and is connected in housing pipe connections 223, and the proximal end face of outer tube 221 passes through dispensing adhesive bonding wrap pipe connections 223 Surface of internal cavity；Outer tube boot 222 is nested with connecting close to its proximal part, outer 222 proximal end of tube boot and outer tube in outer tube 221 Fitting 223 distally connects, and the mode snapped connection can be used and be attached；223 proximal end of housing pipe connections and Y-connection 21 It is threadedly coupled, inner sleeve tube assembly 23 is set in outer tube 221 and can opposite sliding.Outer tube boot 222 is flexible conical sheath.Outside Pipe 221 and central siphon 235 are all 3 layers of braiding structure, greatly increase the flexibility of transportation system, pushability and torsion. 221 ectonexine of outer tube is preferably PTFE material and Nylon material, and middle layer is 304 stainless steel wires, so the internal layer of PTFE material has There is excellent flexibility, friction is small for release, positioning, release convenient for bracket.235 ectonexine of central siphon is preferably PI material Matter, middle layer are 304 stainless steel wires, and this material combination can greatly increase the push performance and flexibility of transportation system.Housing Pipe connections 223 are the materials such as polyethylene, PVC, ABS resin or silica gel.

Fig. 9 is inner tube set component 23, including tip head 231, distal end developing mark ring 232, inner tube 233, proximal end developing mark Ring 234, central siphon 235, metal tube 236 and female Luer 237, general structure are in the inner cavity dispensing locking of female Luer 237 Pipe 233 and metal tube 236, inner tube 233 and metal tube 236 are concentric, and are located at 236 internal layer of metal tube.The proximal end of tip head 231 with Distal end developing mark ring 232 connects, and 236 proximal end of metal tube, 233 proximal end of inner tube are connect with female Luer 237, metal tube 236 Distal end is welded with 235 proximal end of central siphon, and 235 distal end of central siphon is connect with proximal end developing mark ring 234, and inner tube 233 is distally welded Distal end developing mark ring 232 simultaneously puts 231 proximal lumen of glue connection tip head, and inner tube 233 wore metal tube 236, central siphon 235； Metal tube 236 is set in Y-connection 21 and opposite can slide, and inner sleeve tube assembly 23 is set in housing tube assembly 22 and can Opposite sliding, 236 proximal end of metal tube is connected with hand grip.Inner tube 233 is that PEEK is managed or PI is managed or the derivative property management of PI, tool There is a good flexibility, axial strength and torsion.Distal end developing mark ring 232 and proximal end developing mark ring 234 be with Developability metal material or the macromolecule material for adding developer, while in view of the welding with tubing, optional and macromolecule The good developability metal of material welding compatibility, including and it is not limited to tantalum metal, platinumiridio etc..Female Luer 237 is The materials such as polyethylene, PVC, ABS resin or silica gel.Metal tube 236 is 316L stainless steel material or other nothings nontoxic to the human body Harmful alloy material.

Unit rack 11 includes main paragraph 112 and the developing mark portion 111 for being connected to 112 one end of main paragraph, main paragraph 112 For tubular structure and has convenient for the collapsed condition in merging blood vessel and support the swelling state expanded in the blood vessel；Anti-jump component 12 wraps Include the anti-jump ontology 122 being fixed in inner sleeve tube assembly 23 and on anti-jump ontology 122 for being caught in developing mark portion 111 Matching slot 121, under 11 collapsed condition of unit rack, the card of developing mark portion 111 is held in matching slot 121, and during release, Developing mark portion 111 is still designed to be stuck in matching slot 121 until release completely.Main paragraph 112 is marked without development The one end (can certainly have for both ends) in note portion 111 has to be flared outside the gradual change under swelling state, after expansion completely Bell shape is presented in unit rack head end, convenient for positioning in 11 lumen of unit rack, and in the situation of disposal environment complexity Lower unit bracket 11 is not easy to shift, slide.In Fig. 2, Fig. 3, include multiple and equal quantity unit rack 11 and anti-jump component 12.Fig. 4 is the swelling state structure chart that unit rack 11 discharges completely.

Fig. 5 and Fig. 6 is the plane outspread drawing and its details of unit rack 11, and main paragraph 112 is included under collapsed condition Bracket circumferential direction and axial direction are connected and organize integral triangular waveform unit, and triangular waveform unit has the shape under swelling state At octagon close framework.Triangular waveform unit includes two sections of end to end folding shape ribs, and rolling over shape rib successively includes the One muscle section 1121, the second muscle section 1122 and third muscle section 1123, the first muscle section 1121, the second muscle section 1122, third muscle section 1123 Folding shape is connected and to form triangle wavy, and two sections of folding shape ribs surround octagon and close framework.The head end of first muscle section 1121 and The head end of three muscle sections 1123 is each provided with connection top section 1124, and the second muscle section 1122 closes the outer of framework relative to octagon Side is equipped with connecting side section 1125.All connection top sections 1124 are intervally arranged into the week of bracket along bracket axial direction Multiple concentric circumferences.All connecting side sections 1125 are intervally arranged into the week of bracket along bracket axial direction multiple same Heart circumference.The structure of triangular waveform unit in diagram is that two zigzag ribs are formed in parallel, and is basic group of unit rack 11 At part, triangular waveform unit forms rack body by way of radial parallel, axial series.After unit rack 11 expands, Triangular waveform unit forms an eight-sided formation, and irregular eight side closed-loop construct is presented, and sufficient radial direction is improved for bracket Support force；And when surrounded between an adjacent triangular waveform unit and eight side closed-loop constructs, branch is further increased The radial support power of frame.

Unit rack 11 is nested in the inner tube 233 between distal end developing mark ring 232 and proximal end developing mark ring 234 On part, anti-jump component 12 be fixedly connected on this be located at it is interior between distal end developing mark ring 232 and proximal end developing mark ring 234 It is specially anti-jump 122 surface of internal cavity of ontology and 233 outer surface point glue connection of inner tube, anti-jump component 12 in diagram on 233 part of pipe And unit rack 11 is arranged in pairs and each pair of anti-jump component 12 and unit rack 11 are equidistantly arranged.Cooperate this point, on metal tube 236 Release mark scale 2361 equipped with 11 quantity of unit rack being released for corresponding reading, is shown in Figure 10.

111 contours profiles of developing mark portion of each unit rack 11 are approximate with the contours profiles of matching slot 121, and its ruler Very little to be slightly less than 121 size of matching slot, the thickness in developing mark portion 111 and the depth of matching slot 121 are close, and final test is shown Shadow labeling section 111 can be fixed with matching slot 121 always until released after the release completely of unit rack 11 it is fixed as a result, To avoid the release spring problem of unit rack；Compared with similar products, the size in developing mark portion 111 is much bigger.Work as list When first bracket 11 is held under collapsed condition in pressure, the pressure of developing mark portion 111 is held in matching slot 121, in unit rack 11 Traction unit bracket 11 is carried out in axial proximal position, avoids the distal end bounce generated during the release of unit rack 11.

The length range of main paragraph 112 is 12 ~ 22mm.The preferred material of unit rack 11 is dilval or other can Degradation Metal Substrate dilval material realizes self-expandable nature convenient for bracket.The developing mark portion 111 of unit rack 11 can be platinum Iridium alloy, gold, tantalum metal etc. are any to have developability metal material.Developing mark object is equipped in anti-jump ontology 122, in other words Anti-jump ontology 122 is the high molecular material or softness for adding certain proportion developer, metal nontoxic to the human body；Anti-jump ontology 122 while preventing bracket release spring, and developability is also convenient for being accurately positioned and discharging for bracket.

In use, having scale metal tube by rotarily opening blood valve to discharge, by fixed metal tube, pull back Y for proximal end Type connector is to discharge bracket；After the completion of release or when needing to discharge temporary, rotation closes haemostatic valve to discharge and have scale gold Belong to pipe.Outer surface of metal pipe has scale, each scale one piece of bracket of corresponding release.

Claims (20)

1. a kind of more piece application operating system of closed self-expanding unit rack, including manipulation component portion, the manipulation component Portion includes inner sleeve tube assembly (23), housing tube assembly (22) and Y-connection (21), it is characterised in that: further includes set on described Bracket component portion in manipulation component portion, the bracket component portion include unit rack described in more piece (11) and multiple for stablizing The anti-jump component (12) of the corresponding unit rack is discharged, the unit rack (11) and the anti-jump component (12) are set to institute It states on inner sleeve tube assembly (23).

2. a kind of more piece application operating system of closed self-expanding unit rack according to claim 1, feature exist In: the unit rack (11) includes main paragraph (112) and the developing mark portion for being connected to the main paragraph (112) one end (111), the main paragraph (112) for tubular structure and has convenient for the collapsed condition in merging blood vessel and in the blood vessel to expansion Swelling state；The anti-jump component (12) includes the anti-jump ontology (122) being fixed on the inner sleeve tube assembly (23) and is set to For being caught in the matching slot (121) of the developing mark portion (111) on the anti-jump ontology (122).

3. a kind of more piece application operating system of closed self-expanding unit rack according to claim 2, feature exist In: the main paragraph (112) is included under collapsed condition connected in bracket circumferential direction and axial direction and organizes integral triangular wave Shape unit, the triangular waveform unit have the octagon closing framework formed under swelling state.

4. a kind of more piece application operating system of closed self-expanding unit rack according to claim 3, feature exist In: the triangular waveform unit includes two sections of end to end folding shape ribs, and the folding shape rib successively includes the first muscle section (1121), the second muscle section (1122) and third muscle section (1123), the first muscle section (1121), the second muscle section (1122), The third muscle section (1123) folding shape is connected and forms that triangle is wavy, and two sections of folding shape ribs surround the octagon and close frame Body.

5. a kind of more piece application operating system of closed self-expanding unit rack according to claim 4, feature exist In: the head end of the first muscle section (1121) and the head end of the third muscle section (1123) are each provided with connection top section (1124), The second muscle section (1122) is equipped with connecting side section (1125) in the outer part relative to octagon closing framework.

6. a kind of more piece application operating system of closed self-expanding unit rack according to claim 5, feature exist In: all connection top sections (1124) are intervally arranged into multiple concentric circles along bracket axial direction with the week of bracket Week.

7. a kind of more piece application operating system of closed self-expanding unit rack according to claim 5, feature exist In: all connecting side sections (1125) are intervally arranged into multiple concentric circles along bracket axial direction with the week of bracket Week.

8. a kind of more piece application operating system of closed self-expanding unit rack according to claim 2, feature exist It is arranged in pairs and each pair of anti-jump component (12) and the unit in: the anti-jump component (12) and the unit rack (11) Bracket (11) is equidistantly arranged.

9. a kind of more piece application operating system of closed self-expanding unit rack according to claim 2, feature exist Have in one end with the developing mark portion (111) of: the main paragraph (112) and/or its other end in swelling state Under gradual change outside be flared.

10. a kind of more piece application operating system of closed self-expanding unit rack according to claim 2, feature exist In: the length range of the main paragraph (112) is 12 ~ 22mm.

11. a kind of more piece application operating system of closed self-expanding unit rack according to claim 2, feature exist In: developing mark object is equipped in the anti-jump ontology (122).

12. a kind of more piece application operating system of closed self-expanding unit rack according to claim 1, feature exist In: the inner sleeve tube assembly (23) includes tip (231), distal end developing mark ring (232), inner tube (233), proximal end development mark Remember ring (234), central siphon (235), metal tube (236) and female Luer (237), tip described (231) proximal end and the distal end Developing mark ring (232) connection, metal tube (236) proximal end, said inner tube (233) proximal end with the female Luer (237) connect, the metal tube (236) distally connect with the central siphon (235) proximal end, the central siphon (235) distally with The proximal end developing mark ring (234) connection, said inner tube (233) distal end simultaneously with the distal end developing mark ring (232) and Tip described (231) the proximal end connection, said inner tube (233) wore the metal tube (236), the central siphon (235)；Institute It states metal tube (236) to be set in the Y-connection (21) and opposite can slide, the inner sleeve tube assembly (23) is set on institute It states in housing tube assembly (22) and opposite can slide.

13. a kind of more piece application operating system of closed self-expanding unit rack according to claim 12, feature Be: the metal tube (236) is equipped with the release mark of the unit rack (11) quantity being released for corresponding reading Scale (2361).

14. a kind of more piece application operating system of closed self-expanding unit rack according to claim 12, feature Be: the unit rack (11), which is nested with, is being located at the distal end developing mark ring (232) and the proximal end developing mark ring (234) on said inner tube (233) part between, the anti-jump component (12) is fixedly connected on this and is located at distal end development mark Remember on said inner tube (233) part between ring (232) and the proximal end developing mark ring (234).

15. a kind of more piece application operating system of closed self-expanding unit rack according to claim 12, feature Be: the central siphon (235) be by it is interior, in, outer 3 layers of woven tube formed.

16. a kind of more piece application operating system of closed self-expanding unit rack according to claim 12, feature Be: metal tube (236) proximal end is connected with hand grip.

17. a kind of more piece application operating system of closed self-expanding unit rack according to claim 1, feature exist In: the housing tube assembly (22) includes outer tube (221), outer tube boot (222) and housing pipe connections (223), the outer tube (221) it extends proximally into and is connected in the housing pipe connections (223), the outer tube boot (222) is nested in the outer tube (221) its close proximal part, outer tube boot (222) proximal end are connect with housing pipe connections (223) distal end, institute It states housing pipe connections (223) proximal end to be threadedly coupled with the Y-connection (21), the inner sleeve tube assembly (23) is set on institute It states in outer tube (221) and opposite can slide.

18. a kind of more piece application operating system of closed self-expanding unit rack according to claim 17, feature Be: the outer tube (221) be by it is interior, in, outer 3 layers of woven tube formed.

19. a kind of more piece application operating system of closed self-expanding unit rack according to claim 17, feature Be: the outer tube boot (222) is flexible conical sheath.

20. a kind of more piece application operating system of closed self-expanding unit rack according to claim 1, feature exist In: the Y-connection (21) include main siphunculus (214), setting main siphunculus (214) distal end be used for and the housing The hickey (211) of tube assembly (22) connection, setting are used to lock or unclamp in described main siphunculus (214) proximal end The locking valve (213) of sheath assembly (23) and the flashing valve interface (212) being arranged on main siphunculus (214) side.