CN211243922U - Conveying device for conveying peripheral blood vessel self-expanding type stent - Google Patents
Conveying device for conveying peripheral blood vessel self-expanding type stent Download PDFInfo
- Publication number
- CN211243922U CN211243922U CN201921419211.3U CN201921419211U CN211243922U CN 211243922 U CN211243922 U CN 211243922U CN 201921419211 U CN201921419211 U CN 201921419211U CN 211243922 U CN211243922 U CN 211243922U
- Authority
- CN
- China
- Prior art keywords
- sheath
- tube
- hypotube
- inner core
- delivery device
- 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.)
- Active
Links
Images
Landscapes
- Media Introduction/Drainage Providing Device (AREA)
- Prostheses (AREA)
Abstract
The utility model belongs to the technical field of medical instrument, concretely relates to a conveyor for carrying peripheral blood vessel from formula support that expands, include: the outer sheath tube comprises a first sheath tube, a second sheath tube and a first developing mark, wherein the far end of the first sheath tube is fixedly arranged on the inner wall of the near end of the second sheath tube; the first developing mark is arranged at the distal end of the second sheath; the pushing guide rod comprises a hypotube, an inner core, a micro guide wire, a second developing mark and a third developing mark; the hypotube is fixedly sleeved on the outer side of the micro guide wire; the inner core is sleeved between the hypotube and the micro guide wire; the second developing mark is arranged at the far end of the hypotube, and the third developing mark is arranged at the far end of the inner core; the proximal end of the micro guide wire is inserted into the first sheath tube through the second sheath tube and is suitable for enabling the hypotube to be positioned in the second sheath tube. The utility model discloses an above-mentioned structure set up can accurate effectual location, guaranteed that the formula support of expanding is released effectively safely, improved the success rate of operation.
Description
Technical Field
The utility model belongs to the technical field of medical instrument, concretely relates to a conveyor for carrying peripheral blood vessel from formula support that expands.
Background
Peripheral blood vessels of a human body can cause artery stenosis, dilatation and dissection and other peripheral blood vessel diseases due to various pathological changes, once the blood vessels are diseased, the function of certain organs of the human body can be lost and even die, for example, the obstructive peripheral blood vessel disease can cause ischemia or necrosis of a blood supply trachea, and the stenosis or occlusion of an internal carotid artery or an intracranial artery can cause ischemic encephalopathy, such as infarction or cerebral embolism and the like. Neuro-interventional medicine has developed and developed in short decades, from scratch, and has occupied an increasingly important position in the field of neurosurgery, and particularly, many breakthrough progresses have been made in the diagnosis and treatment of cerebrovascular diseases. The nerve interventional therapy has the greatest advantages of avoiding tissue trauma caused by surgical operation, along with wide adaptability, simple operation, small trauma, exact curative effect and few complications. In recent years, with the rapid development of medical and engineering technologies, the intracavitary stent treatment technology is developed into a minimally invasive treatment technology which is concerned with modern medicine and has a wide development prospect.
The self-expandable peripheral blood vessel stent system is one kind of stent treating technology for treating peripheral blood vessel diseases, such as carotid artery stenosis and subclavian artery stenosis. The self-expandable stent is preloaded in a delivery device, is delivered to a lesion position of a blood vessel through the delivery device, then releases the stent, and can automatically expand to the size of a target lesion blood vessel after being released, so that the functions of supporting the blood vessel and restoring blood flow are achieved, and the method is adopted by Chinese patent CN 203458500U. The key to the success of the intraluminal stent therapy technology is the developability of the stent, and the developability of the stent is different, so that the stent has different difficulties when being released in place in the blood vessel. There are also numerous prior art delivery systems. The utility model provides a can carry from formula of expanding support, realize accurate, simple, the release effectively of support, shorten the time of the intervention operation of support treatment widely.
Therefore, to the above insufficiency, the utility model discloses it is urgently needed to provide a conveyor for carrying peripheral blood vessel from expanding formula support.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a conveyor for carrying peripheral blood vessel from formula support that expands to solve among the prior art from the formula support that expands and fix a position the not accurate enough problem in the blood vessel.
The utility model provides a conveyor for carrying peripheral blood vessel from formula support that expands, include: the outer sheath comprises a first sheath, a second sheath and a first developing mark, the diameter of the first sheath is smaller than that of the second sheath, and the far end of the first sheath is fixedly arranged on the inner wall of the near end of the second sheath; the first developing mark is arranged at the distal end of the second sheath; the push guide rod comprises a hypotube, an inner core, a micro guide wire, a second developing mark and a third developing mark; the hypotube is fixedly sleeved on the outer side of the micro guide wire; the inner core is sleeved between the hypotube and the micro guide wire, and two ends of the inner core penetrate out of the hypotube; the second visualization mark is arranged at the far end of the hypotube, and the third visualization mark is arranged at the far end of the inner core; the proximal end of the micro guide wire is inserted into the first sheath tube through the second sheath tube, and the hypotube is suitable for being positioned in the second sheath tube.
The conveying device for conveying the peripheral blood vessel self-expandable stent further preferably comprises a first tube seat and a second tube seat, wherein the first tube seat and the second tube seat are internally provided with through inner cavities, the first tube seat is sleeved outside the first sheath tube and fixed with the proximal end of the first sheath tube, and the second tube seat is sleeved outside the micro guide wire and fixed with the proximal end of the micro guide wire.
The delivery device for delivering a peripheral vascular self-expandable stent as described above further preferably further comprises a rotary hemostatic valve attached to the distal end of the first tube holder.
In the above delivery device for delivering a peripheral vascular self-expandable stent, it is preferable that the inner diameter of the second sheath is 2 to 5 times the inner diameter of the first sheath.
The delivery device for delivering the peripheral vascular self-expandable stent as described above, further preferably, the first sheath is fixed to the second sheath by welding or gluing, and the length of the overlapping portion of the first sheath and the second sheath is 2.5cm to 9 cm.
In the delivery device for delivering the peripheral vascular self-expandable stent, it is further preferable that the second sheath tube includes a liner and an outer tube, and the liner is provided on an inner wall of the outer tube; the first development mark is provided between the inner liner and the outer tube.
The delivery device for delivering the peripheral blood vessel self-expandable stent is further preferably characterized in that the outer tube is made of a plastic material; the inner lining is made of polytetrafluoroethylene materials.
The delivery device for delivering the peripheral vascular self-expandable stent is further preferred that the inner core is a braided tube, and the length of the distal end of the inner core penetrating through the hypotube is 2.5cm-5cm, and the length of the proximal end penetrating through the hypotube is 2.5cm-9 cm.
The delivery device for delivering the peripheral vascular self-expandable stent further preferably comprises a top cap, wherein the top cap is provided with an open cavity and is suitable for being sleeved at the far end of the inner core; the third development mark is mounted in the open cavity.
In the above-described delivery device for delivering a peripheral vascular self-expandable stent, it is further preferable that the first visualization mark, the second visualization mark, and the third visualization mark are made of a tantalum or platinum metal material.
Compared with the prior art, the utility model has the following advantage:
the utility model discloses a conveyor for carrying peripheral blood vessel from formula support that expands includes sheath pipe and propelling movement guide arm, wherein the sheath pipe includes first sheath pipe, second sheath pipe and first development mark, and the propelling movement guide arm includes hypotube, inner core, little seal wire, second development mark and third development mark. In the structure, the second developing mark and the third developing mark which are arranged on the pushing guide rod are suitable for the initial positioning of the self-expanding bracket, namely the initial release position of the self-expanding bracket is found; the first developing mark is arranged on the outer sheath pipe, and the outer sheath pipe and the pushing guide rod are movably sleeved, so that the first developing mark can move relative to the second developing mark and the third developing mark, the state of the self-expanding bracket in the releasing process can be conveniently and dynamically observed, operation information can be accurately acquired, and a releasing completion signal can be acquired. Namely the utility model discloses a conveyor for carrying peripheral blood vessel is from expanding formula support can accurate effectual location through the setting of above-mentioned structure, has guaranteed to release from expanding formula support safety effectively, has improved the success rate of operation.
Drawings
Fig. 1 is a schematic structural view of a conveying device for conveying a peripheral vascular self-expandable stent in the present invention;
FIG. 2 is a schematic structural view of the sheath tube shown in FIG. 1;
FIG. 3 is a schematic structural view of the push guide bar of FIG. 1;
fig. 4 is an enlarged view of the distal end of a delivery device of fig. 1 for delivering a peripheral vascular self-expanding stent.
Description of reference numerals:
10-outer sheath, 11-first sheath, 12-second sheath, 13-first visualization marker;
20-a pushing guide rod, 21-a hypotube, 22-a second developing mark, 23-an inner core, 24-a micro guide wire, 25-a third developing mark and 26-a top cap;
30-a first tube holder, 40-a second tube holder, 50-a rotary hemostatic valve, and 60-a self-expandable stent.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the utility model, the near end is near the handheld one end, and the far end is far away from the handheld one end.
As shown in fig. 1 to 4, the present embodiment discloses a delivery device for delivering a peripheral vascular self-expandable stent, comprising: the sheath 10 comprises a first sheath 11, a second sheath 12 and a first developing mark 13, wherein the diameter of the first sheath 11 is smaller than that of the second sheath 12, and the distal end of the first sheath 11 is fixedly mounted on the inner wall of the proximal end of the second sheath 12; the first visualization mark 13 is provided at the distal end of the second sheath 12; a push guide rod 20, wherein the push guide rod 20 comprises a hypotube 21, an inner core 23, a micro guide wire 24, a second developing mark 22 and a third developing mark 25; the hypotube 21 is fixedly sleeved on the outer side of the micro guide wire 24; the inner core 23 is sleeved between the hypotube 21 and the micro guide wire 24, and both ends of the inner core penetrate out of the hypotube 21; the second visualization marker 22 is mounted at the distal end of the hypotube 21, and the third visualization marker 25 is mounted at the distal end of the inner core 23; the proximal end of the micro-wire 24 is inserted into the first sheath 11 through the second sheath 12, and is adapted to locate the hypotube 21 in the second sheath 12.
In this embodiment, the hypotube 21 has a helical structure and a certain flexibility, and is formed by laser cutting a stainless steel tube; the micro-wire 24 may be a medical stainless steel wire or a nickel titanium wire or other medical metal wire; the hypotube 21 and the micro guidewire 24 are connected together by laser spot welding or other means.
As a preferred embodiment of the present embodiment, as shown in fig. 1, the medical catheter further includes a first tube holder 30 and a second tube holder 40, wherein the first tube holder 30 and the second tube holder 40 are both provided with a through inner cavity, the first tube holder 30 is sleeved outside the first sheath tube 11 and fixed to the proximal end of the first sheath tube 11, and the second tube holder 40 is sleeved outside the micro guide wire 24 and fixed to the proximal end of the micro guide wire 24.
As a preferred embodiment of this embodiment, as shown in FIG. 1, a rotary hemostatic valve 50 is further included, and the rotary hemostatic valve 50 is mounted at the distal end of the first tube holder 30.
As a preferred embodiment of the present embodiment, as shown in fig. 1-2, the inner diameter of the second sheath 12 is 2 to 5 times the inner diameter of the first sheath 11.
As a preferred embodiment of this embodiment, as shown in fig. 1-2, the first sheath 11 is fixed to the second sheath 12 by welding or gluing, and the length of the overlapping portion of the first sheath 11 and the second sheath 12 is 2.5cm to 9 cm. Preferably, the first sheath 11 and the second sheath 12 are combined together by thermal welding, spot-gluing, or the like.
As a preferred embodiment of this embodiment, as shown in fig. 1-2, the second sheath 12 includes an inner liner and an outer tube, the inner liner is disposed on the inner wall of the outer tube; the first development mark 13 is provided between the inner liner and the outer tube. Preferably, the outer tube is made of a plastic material, and specifically, a polymer material such as PA (Polyamide), Pebax (Polyether block amide), or the like can be used; the inner lining is made of polytetrafluoroethylene materials. Specifically, the first development mark 13 is in a ring shape and is adapted to be wound around the liner.
As a preferred embodiment of this embodiment, as shown in fig. 1, the inner core 23 is a braided tube, and the length of the distal end of the inner core 23 penetrating through the hypotube 21 is 2.5cm to 5cm, and the length of the proximal end penetrating through the hypotube 21 is 2.5cm to 9 cm.
As a preferred embodiment of this embodiment, as shown in fig. 1, it further comprises a top cap 26, wherein the top cap 26 is provided with an open cavity adapted to fit over the distal end of the inner core 23; the third development mark is mounted in the open cavity.
As a preferred embodiment of this embodiment, as shown in fig. 1, the first development mark, the second development mark and the third development mark are made of metal material made of tantalum, platinum or other metal wire having non-transmissivity under X-ray.
When in actual use, the micro guide wire 24 of the push guide rod 20 is inserted into the insertion hole of the first sheath tube through the second sheath tube and penetrates out of the inner cavity of the first tube seat until the proximal end of the hypotube is close to the distal end of the first sheath tube, and then the second tube seat is installed at the proximal end of the micro guide wire 24; and then installing the self-expanding bracket to enable the self-expanding bracket to be positioned between the first developing mark and the second developing mark, namely completing the installation and carrying out the operation. And after the self-expanding stent is conveyed to a designated position by the device, withdrawing the first tube seat, further driving the outer sheath tube to withdraw until the whole self-expanding stent is completely released from the second sheath tube, and finally withdrawing the conveying device, thus finishing the operation.
The utility model discloses a conveyor for carrying peripheral blood vessel from formula support 60 that expands includes outer sheath pipe 10 and propelling movement guide arm 20, and wherein outer sheath pipe 10 includes first sheath pipe 11, second sheath pipe 12 and first development mark 13, and propelling movement guide arm 20 includes hypotube 21, inner core 23, little seal wire 24, second development mark 22 and third development mark 25. In the above structure, the second development mark 22 and the third development mark 25 provided on the push guide rod 20 are suitable for initial positioning of the self-expandable stent 60, that is, for finding the initial release position of the self-expandable stent 60; the first developing mark 13 is arranged on the outer sheath 10, and the outer sheath 10 and the pushing guide rod 20 are movably sleeved, so that the first developing mark 13 can move relative to the second developing mark 22 and the third developing mark 25, the state of the self-expanding stent 60 in the releasing process can be conveniently and dynamically observed, operation information can be accurately acquired, and a releasing completion signal can be further obtained. That is, the utility model discloses a conveyor for carrying peripheral blood vessel from formula support 60 that expands can accurate effectual location through the setting of above-mentioned structure, has guaranteed that self-expanding support 60 releases effectively safely, has improved the success rate of operation. The self-expanding stent 60 can be self-expanded and released only by withdrawing the sheath tube 10 and is positioned with the blood vessel; after the self-expanding stent 60 is positioned, the outer sheath tube 10 and the pushing guide rod 20 are synchronously retracted to be withdrawn from the blood vessel, so that the operation can be completed, and the time of the interventional operation is greatly shortened;
the utility model provides a hand grabbing structure for the sheath tube 10 and the pushing guide rod 20 by arranging the first tube seat 30 and the second tube seat 40, which is beneficial to the fine operation of the sheath tube 10 and the pushing guide rod 20 during the operation;
the utility model has the advantages that the rotary hemostatic valve 50 is arranged, so that the conveying device has hemostatic effect;
in this embodiment, the second sheath 12 including the inner liner and the outer tube and made of teflon material is provided, which facilitates the positioning and installation of the first developing marker 13 and facilitates the sliding separation of the second sheath 12 and the self-expandable stent 60.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (10)
1. A delivery device for delivering a peripheral vascular self-expanding stent, comprising:
an outer sheath comprising a first sheath, a second sheath, and a first visualization marker; the diameter of the first sheath tube is smaller than that of the second sheath tube, and the far end of the first sheath tube is fixedly arranged on the inner wall of the near end of the second sheath tube; the first developing mark is arranged at the distal end of the second sheath;
the push guide rod comprises a hypotube, an inner core, a micro guide wire, a second developing mark and a third developing mark; the hypotube is fixedly sleeved on the outer side of the micro guide wire; the inner core is arranged between the hypotube and the micro guide wire, and two ends of the inner core penetrate out of the hypotube; the second visualization mark is arranged at the far end of the hypotube, and the third visualization mark is arranged at the far end of the inner core; the proximal end of the micro guide wire is inserted into the first sheath tube through the second sheath tube, and the hypotube is suitable for being positioned in the second sheath tube.
2. The delivery device for delivering a self-expandable stent of a peripheral blood vessel as claimed in claim 1, further comprising a first tube seat and a second tube seat, wherein the first tube seat and the second tube seat are both provided with a through inner cavity therein, the first tube seat is sleeved outside the first sheath tube and fixed with the proximal end of the first sheath tube, and the second tube seat is sleeved outside the micro guide wire and fixed with the proximal end of the micro guide wire.
3. The delivery device for delivering a peripheral vascular self-expanding stent of claim 2, further comprising a rotary hemostasis valve mounted at the distal end of the first tube holder.
4. The delivery device for delivering a peripheral vascular self-expanding stent of claim 3, wherein the second sheath has an inner diameter 2-5 times the inner diameter of the first sheath.
5. The delivery device of claim 4, wherein the first sheath is fixed to the second sheath by welding or gluing, and the length of the overlapping part of the first sheath and the second sheath is 2.5-9 cm.
6. The delivery device for delivering a peripheral vascular self-expanding stent of claim 5, wherein the second sheath comprises a liner and an outer tube, the liner being disposed on an inner wall of the outer tube; the first development mark is provided between the inner liner and the outer tube.
7. The delivery device for delivering a peripheral vascular self-expanding stent of claim 6, wherein the outer tube is made of a plastic material; the inner lining is made of polytetrafluoroethylene materials.
8. The delivery device for delivering a peripheral vascular self-expanding stent of claim 7, wherein the inner core is a braided tube and the length of the inner core that the distal end of the inner core passes out of the hypotube is 2.5cm to 5cm and the length of the inner core that the proximal end passes out of the hypotube is 2.5cm to 9 cm.
9. The delivery device for delivering a peripheral vascular self-expanding stent of claim 8, further comprising a top cap having an open lumen adapted to fit over the distal end of the inner core; the third development mark is mounted in the open cavity.
10. The delivery device for delivering a peripheral vascular self-expanding stent of claim 9, wherein the first visualization marker, the second visualization marker, and the third visualization marker are made of tantalum or platinum metal material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921419211.3U CN211243922U (en) | 2019-08-29 | 2019-08-29 | Conveying device for conveying peripheral blood vessel self-expanding type stent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921419211.3U CN211243922U (en) | 2019-08-29 | 2019-08-29 | Conveying device for conveying peripheral blood vessel self-expanding type stent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211243922U true CN211243922U (en) | 2020-08-14 |
Family
ID=71983397
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921419211.3U Active CN211243922U (en) | 2019-08-29 | 2019-08-29 | Conveying device for conveying peripheral blood vessel self-expanding type stent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211243922U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115445056A (en) * | 2022-08-31 | 2022-12-09 | 上海英威思医疗科技有限公司 | Stent delivery guide wire and preparation method thereof |
| CN116099101A (en) * | 2023-04-12 | 2023-05-12 | 北京久事神康医疗科技有限公司 | Medical catheter |
-
2019
- 2019-08-29 CN CN201921419211.3U patent/CN211243922U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115445056A (en) * | 2022-08-31 | 2022-12-09 | 上海英威思医疗科技有限公司 | Stent delivery guide wire and preparation method thereof |
| CN115445056B (en) * | 2022-08-31 | 2024-04-26 | 上海英威思医疗科技有限公司 | Stent delivery guide wire and preparation method thereof |
| CN116099101A (en) * | 2023-04-12 | 2023-05-12 | 北京久事神康医疗科技有限公司 | Medical catheter |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6663921B2 (en) | Guide wire fixing | |
| JP2021130039A (en) | Devices and methods for fistula formation | |
| JP5086240B2 (en) | Dual needle feeding system | |
| EP0891171B1 (en) | Rapid exchange delivery cathether system | |
| US20210038869A1 (en) | Cutting balloon and balloon catheter | |
| US20030055377A1 (en) | Exchangeable catheter | |
| CN108136159A (en) | With the occlusive part bypass equipment for entering back into needle and distal side stabilization utricule | |
| EP0515119A1 (en) | Intravascular device | |
| JPS63214265A (en) | Rescue catheter | |
| JP2000041988A (en) | Neovascularization catheter | |
| CN109045439B (en) | Catheter system | |
| CN211243922U (en) | Conveying device for conveying peripheral blood vessel self-expanding type stent | |
| WO2011059829A1 (en) | Devices, systems and methods for enhanced visualization of the anatomy of a patient | |
| WO2014197362A1 (en) | Devices, methods and kits for delivery of therapeutic materials to a pancreas | |
| WO2023006075A1 (en) | Puncture instrument | |
| JP2014230710A (en) | Therapeutic method | |
| CN106821563B (en) | A kind of holder for branch vessel opening lesion | |
| US8353851B2 (en) | Apparatus for automatic replacement of instruments during minimally invasive procedures | |
| KR20190008367A (en) | Apparatus and Process for Surgery of Narrow Body Lumen | |
| CN114191095A (en) | Synchronous intervention operation robot | |
| CN108355230A (en) | More seal wire medicine balloon dilating catheters and its application method | |
| EP1390095A2 (en) | Exchangeable catheter | |
| CN114931696A (en) | Radial artery access nerve intervention catheter | |
| CN213789513U (en) | Drug balloon conveying system with protection device | |
| CN213941827U (en) | Pulmonary body shunt system for interventional therapy of pulmonary arterial hypertension |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 101204 building 4, yard 21, Panlong West Road, Mafang Town, Pinggu District, Beijing Patentee after: Beijing Taijieweiye Technology Co.,Ltd. Address before: 101200 building 4, courtyard 21, Panlong West Road, Pufeng medical innovation Valley, Mafang Town, Pinggu District, Beijing Patentee before: BEIJING TAIJIE WEIYE TECHNOLOGY Co.,Ltd. |
|
| CP03 | Change of name, title or address |