CN103356316A - High shrinkage intravascular stent delivery system - Google Patents
High shrinkage intravascular stent delivery system Download PDFInfo
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- CN103356316A CN103356316A CN2013103156549A CN201310315654A CN103356316A CN 103356316 A CN103356316 A CN 103356316A CN 2013103156549 A CN2013103156549 A CN 2013103156549A CN 201310315654 A CN201310315654 A CN 201310315654A CN 103356316 A CN103356316 A CN 103356316A
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- intravascular stent
- tube
- outer tube
- spiral shell
- induction system
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Abstract
The invention provides a high shrinkage intravascular stent delivery system, whichcomprises a conduit component and a control component, wherein the conduit component comprises an outer tube, a middle-layer tube and an inner tube; an intravascular stent and a check block are arranged in the outer tube; the control component comprises a body and a screw rotationally arranged in the body; the screw is provided with a left-hand thread and a right-hand thread in opposite spiral directions at intervals; and the screw is rotated to make the outer tube move to a near end, and the middle-layer tube pushes the check block and the intravascular stent to move to a far end. The invention has the advantages that a three-layer conduit structure is adopted, the relative movement of the middle-layer tube and the outer tube can effectively offset the axial shrinkage of the intravascular stent, and the intravascular stent can be easily and reliably arranged at an expected position.
Description
Technical field
The present invention relates to minimally invasive medical technique with the apparatus field, particularly a kind of induction system of intravascular stent.
Background technology
Compare traditional peripheral vascular surgery, Wicresoft's intervene operation wound of employing stent in the treatment is little, and few intercurrent disease is effective, becomes the main way of present treatment periphery angiostenosis.
Need to apply to induction system when as shown in Figure 1, being implanted to intravascular stent in the body.Existing induction system shown in Chinese patent application CN201110190183.4, the general mutually inner and outer tubes of the hollow of socket that adopt, the passing of seal wire when the hollow bulb of inner tube is convenient to perform the operation, intravascular stent is arranged between the inner and outer tubes.During operation, the conduit tube component of seal wire guiding induction system arrives operative site, and Control Component makes the outer tube rear side, and its process medium vessels support launches and form in blood vessel.
But because the high nerve of most of Self-expanded stent, axial retraction is large, and high nerve adopts so induction system not locate well, does not namely reach requirements of operation.
Summary of the invention
In view of the defective that above-mentioned prior art exists, the objective of the invention is to propose to be suitable for the induction system of the intravascular stent of axial high nerve.
Purpose of the present invention will be achieved by the following technical programs:
A kind of high nerve intravascular stent induction system, comprise conduit tube component and Control Component, described conduit tube component extend in the described Control Component and by described Control Component and drives, and described conduit tube component comprises outer tube, be located at the middle tube of outer tube inside, and be located at the inner tube of middle tube inside; Described inner tube comprises a hollow channel, is used for seal wire and passes, and described seal wire guides described induction system to enter into operative region, and described outer tube comprises an intravascular stent load region, and described intravascular stent is placed in the described load region; Block of the near-end butt of described intravascular stent, the sidewall of described block is connected to the inwall of described outer tube, and the far-end of described middle tube is connected to the proximal end face of described block; The far-end of described inner tube passes the inner chamber of described block and intravascular stent, and stretches out in the distal face of described outer tube;
Described Control Component comprises that body and rotation are arranged on intrinsic screw rod, is provided with at intervals the opposite left hand thread of the hand of spiral and right-handed thread on the described screw rod; The first spiral shell button that has been threaded on the described left hand thread, the second spiral shell button has been threaded on the described right-handed thread; The near-end of described outer tube is fixed in described the first spiral shell to be buckled; The near-end of described middle tube is fixed in described the second spiral shell to be buckled; The near-end of described inner tube passes described the first spiral shell button and the second spiral shell button, and stretches out in the near-end of the body of described Control Component;
Rotate described screw rod and make the first spiral shell button and the second in axial direction adverse movement of spiral shell button, and then described outer tube is moved to near-end, and middle tube promotes described block and intravascular stent moves to far-end.
Preferably, be arranged with the developing ring of indicative function on the described outer tube.
Preferably, the far-end of described outer tube is provided with the tip that play the guiding role.
Preferably, the far-end of described body is fixed cover, and described conduit tube component passes the body interior that described fixed cover extend into described Control Component.
Preferably, the near-end of described screw rod is provided with the knob of the described bolt rotary of a control.
Preferably, described screw rod is set up on the support of Control Component body interior, and described support is provided with axle sleeve.
Preferably, the near-end of described inner tube is installed with a guide pin bushing, and described seal wire stretches in this guide pin bushing.
Beneficial effect major embodiment of the present invention is: adopt three layers of guide-tube structure, relatively moving of middle tube and outer tube can be offset the axial cripetura of intravascular stent effectively, intravascular stent can be easy to and be placed on very reliably desired location.
Following constipation closes the embodiment accompanying drawing, the specific embodiment of the present invention is described in further detail, so that technical solution of the present invention is easier to understand, grasp.
Description of drawings
Fig. 1 is the use sketch map of prior art intravascular stent induction system;
Fig. 2 is the structural representation of the intravascular stent of axial high nerve;
Fig. 3 is the structural representation of induction system of the present invention;
Fig. 4 is along the cutaway view of C-C among Fig. 2;
Fig. 5 is the use sketch map of intravascular stent induction system of the present invention.
The specific embodiment
The present invention has disclosed a kind of induction system of intravascular stent of axial high nerve.As shown in Figure 2, the intravascular stent of axial high nerve is formed by the nitinol alloy wire coiling, comprise the body of a tubular and the fillet part that is arranged on the convolution at body two ends, by dextrorotation and staggered poor folded the forming of derotation, described body is formed by one group of network unit described body by nitinol alloy wire.So not firmly restriction of the node of the network cells overlap of intravascular stent, the node of the firm constraint of this shortage allows nitinol alloy wire rotation and distortion, rather than enters a circumferential displacement.Consequently, it can prevent the local high bending strain around the typical node in the cut class support.This mechanism is that identical network has, but closed end circulates and hangs down the angle of cut, and the nitinol alloy wire that uses makes new support become the support that a unique radial rigidity and axial elasticity combine, after like this in intravascular stent is implanted to blood vessel, its good ductility can make it can not form traditional water clock shape, and forever be configured as cylindricly, solved the puzzlement that prior art is brought.
Fig. 3 and Fig. 4 have disclosed a kind of preferred embodiment that can well the intravascular stent of Fig. 2 be implanted the induction system in the patient, and it specifically comprises conduit tube component and Control Component, and described conduit tube component extend in the described Control Component and by described Control Component and drives.
Described conduit tube component comprises outer tube 5, is located at the middle tube 6 of outer tube 5 inside, and is located at the inner tube 7 of middle tube 6 inside; Described inner tube 7 comprises a hollow channel, is used for seal wire and passes, and described seal wire guides described induction system to enter into operative region, and described outer tube 5 comprises an intravascular stent load region, and described intravascular stent 3 is placed in the described load region; Block 4 of the near-end butt of described intravascular stent 3, the sidewall of described block 4 is connected to the inwall of described outer tube 5, and the far-end of described middle tube 6 is connected to the proximal end face of described block 4; The far-end of described inner tube 7 passes the inner chamber of described block 4 and intravascular stent 3, and stretches out in the distal face of described outer tube 5; Be arranged with the developing ring 2 of indicative function on the described outer tube 5.The far-end of described outer tube 5 is provided with the tip 1 that play the guiding role.
The far-end of described body 9 is fixed cover 8, and described conduit tube component passes the inside that described fixed cover 8 extend into described Control Component.Described Control Component comprises body 9 and rotates the screw rod 16 that is arranged in the body 9, is provided with at intervals the hand of spiral opposite left hand thread 13 and right-handed thread 14 on the described screw rod 16; The first spiral shell button 17 that has been threaded on the described left hand thread 13, the second spiral shell button 19 has been threaded on the described right-handed thread 14; The near-end of described outer tube 5 is fixed on described the first spiral shell button 17; The near-end of described middle tube 6 is fixed on described the second spiral shell button 19; The near-end of described inner tube 7 passes described the first spiral shell button 17 and the second spiral shell button 19, and stretches out in the near-end of the body 9 of described Control Component; The near-end of described screw rod 16 is provided with the knob 10 that the described screw rod 16 of a control rotates.Described screw rod 16 is set up on the support 14 of Control Component body interior, and described support 14 is provided with axle sleeve 18.The near-end of described inner tube 7 is installed with a guide pin bushing 11, and described seal wire stretches in this guide pin bushing 11.
Below in conjunction with Fig. 5 the work process of the transfer gantry of the preferred embodiment of the present invention is once described simply.
At first seal wire is extend in the inner tube 7 from guide pin bushing 11, and stretch out from the far-end of inner tube 7, then under the guiding of seal wire the conduit tube component of induction system is directed to the operation desired location, the operation desired location is indicated by developing ring 2.At this moment, rotary knob 10, namely rotate described screw rod 16, opposite hand of spiral makes the first spiral shell button 17 and the second in axial direction adverse movement of spiral shell button 19, the first spiral shell button 17 moves downward described in Fig. 2, described the second spiral shell button 19 moves upward, and namely the first spiral shell button 17 drives described outer tube 5 and moves to the near-end of induction system, and the second spiral shell button 19 drives described middle tube 6 and promotes described block 4 and intravascular stent 3 moves to far-end.Intravascular stent 3 can be pushed out of outside the described outer tube 5 like this, and is placed on well operative region.After intravascular stent 3 is implanted fully, by Control Component conduit tube component is pulled back together in the patient.
Because the axial high nerve of intravascular stent, therefore when original state, it is stretched to long status and is placed on outer tube inside, when its far-end begins to be pushed out with outer tube when operation, the release of intravascular stent partly has ordering about of contraction, but because middle tube is extrapolated with intravascular stent simultaneously, its contracted length with release apart from obtaining a relative counteracting.It should be noted that owing to be stretched to the intravascular stent of long status to be compressed in outer tube inside, thus intravascular stent within the outer tube during section without distortion may, so it can be pushed out of outer tube by block.
Among the present invention, being deciding with doctor's distance in the operation process for the definition of near-end and far-end, is near-end from the end of doctor close to, and an end far away is far-end.
The present invention is not limited to aforementioned embodiments, for example, the setting of the two ends reverse thread on the screw rod, and the selection between outer tube, middle tube and the spiral shell button is fixed, all can relatively adjust, with reach the operation middle external tube to near-end move, middle tube is advisable to the purpose that far-end moves.
Those skilled in the art also may make other changes, but as long as function and the present invention of its realization are same or similar, all should belong to protection scope of the present invention under the enlightenment of the technology of the present invention marrow.
Claims (7)
1. one kind high nerve intravascular stent induction system is characterized in that: comprise conduit tube component and Control Component, described conduit tube component extend in the described Control Component and by described Control Component and drives,
Described conduit tube component comprises outer tube (5), is located at the inner middle tube (6) of outer tube (5), and is located at the inner inner tube (7) of middle tube (6);
Described inner tube (7) comprises a hollow channel, is used for seal wire and passes, and described seal wire guides described induction system to enter into operative region,
Described outer tube (5) comprises an intravascular stent load region, and described intravascular stent (3) is placed in the described load region;
A block of the near-end butt of described intravascular stent (3) (4), the sidewall of described block (4) is connected to the inwall of described outer tube (5), and the far-end of described middle tube (6) is connected to the proximal end face of described block (4);
The far-end of described inner tube (7) passes the inner chamber of described block (4) and intravascular stent (3), and stretches out in the distal face of described outer tube (5);
Described Control Component comprises that body (9) and rotation are arranged on the screw rod (16) in the body (9),
Be provided with at intervals the opposite left hand thread of the hand of spiral (13) and right-handed thread (14) on the described screw rod;
The first spiral shell button (17) that has been threaded on the described left hand thread (13), the second spiral shell button (19) has been threaded on the described right-handed thread (14);
The near-end of described outer tube (5) is fixed on described the first spiral shell button (17); The near-end of described middle tube (6) is fixed on described the second spiral shell button (19); The near-end of described inner tube (7) passes described the first spiral shell button (17) and the second spiral shell button (19), and stretches out in the near-end of the body (9) of described Control Component;
Rotate described screw rod (16) and make the first spiral shell button (17) and the second in axial direction adverse movement of spiral shell button (19), and then described outer tube (5) is moved to near-end, and middle tube (6) promotes described block (4) and intravascular stent (3) moves to far-end.
2. high nerve intravascular stent induction system according to claim 1 is characterized in that: the developing ring (2) that has been arranged with indicative function on the described outer tube (5).
3. high nerve intravascular stent induction system according to claim 1, it is characterized in that: the far-end of described outer tube (5) is provided with the tip (1) that play the guiding role.
4. high nerve intravascular stent induction system according to claim 1, it is characterized in that: the far-end of described body (9) is fixed cover (8), and described conduit tube component passes the body interior that described fixed cover (8) extend into described Control Component.
5. high nerve intravascular stent induction system according to claim 1 is characterized in that: the near-end of described screw rod (16) is provided with the knob (10) that a described screw rod of control (16) rotates.
6. high nerve intravascular stent induction system according to claim 1, it is characterized in that: described screw rod (16) is set up on the support (14) of Control Component body interior, and described support (14) is provided with axle sleeve (18).
7. high nerve intravascular stent induction system according to claim 1, it is characterized in that: the near-end of described inner tube (7) is installed with a guide pin bushing (11), and described seal wire stretches in this guide pin bushing (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310315654.9A CN103356316B (en) | 2013-07-25 | 2013-07-25 | High shrinkage intravascular stent delivery system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310315654.9A CN103356316B (en) | 2013-07-25 | 2013-07-25 | High shrinkage intravascular stent delivery system |
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| CN103356316A true CN103356316A (en) | 2013-10-23 |
| CN103356316B CN103356316B (en) | 2015-07-01 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2015176643A1 (en) * | 2014-05-21 | 2015-11-26 | 苏州英络医疗器械有限公司 | Highly retractable intravascular stent conveying system |
| CN106255478A (en) * | 2014-02-17 | 2016-12-21 | 牛津大学创新有限公司 | Mount device |
| WO2018120750A1 (en) * | 2016-12-28 | 2018-07-05 | 苏州茵络医疗器械有限公司 | Self-expanding stent delivery system and related components thereof |
| CN109843344A (en) * | 2016-03-29 | 2019-06-04 | 威尼蒂公司 | The stent delivery system of mechanical-assisted |
| CN111388158A (en) * | 2020-01-20 | 2020-07-10 | 苏州恒瑞宏远医疗科技有限公司 | Conveying device |
| WO2021136252A1 (en) * | 2019-12-31 | 2021-07-08 | 杭州诺生医疗科技有限公司 | Ostomy system |
| WO2023071392A1 (en) * | 2021-10-28 | 2023-05-04 | 上海臻亿医疗科技有限公司 | Implant delivery device and implant delivery system |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106255478A (en) * | 2014-02-17 | 2016-12-21 | 牛津大学创新有限公司 | Mount device |
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| WO2021136252A1 (en) * | 2019-12-31 | 2021-07-08 | 杭州诺生医疗科技有限公司 | Ostomy system |
| CN111388158A (en) * | 2020-01-20 | 2020-07-10 | 苏州恒瑞宏远医疗科技有限公司 | Conveying device |
| CN111388158B (en) * | 2020-01-20 | 2022-05-10 | 苏州恒瑞宏远医疗科技有限公司 | Conveying device |
| WO2023071392A1 (en) * | 2021-10-28 | 2023-05-04 | 上海臻亿医疗科技有限公司 | Implant delivery device and implant delivery system |
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| CN103356316B (en) | 2015-07-01 |
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Owner name: SUZHOU YINLUO MEDICAL DEVICE CO., LTD. Free format text: FORMER NAME: SUZHOU INNOMED MEDICAL DEVICE CO., LTD. |
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Address after: Xinghu Street Industrial Park in Suzhou city of Jiangsu Province, No. 218 B2-213 215121 Patentee after: SUZHOU INNOMED MEDICAL DEVICE CO., LTD. Address before: Xinghu Street Industrial Park in Suzhou city of Jiangsu Province, No. 218 B2-213 215121 Patentee before: Suzhou InnoMed Medical Device Co., Ltd. |