CN109350324B - Distal bendable stent implantation device - Google Patents
Distal bendable stent implantation device Download PDFInfo
- Publication number
- CN109350324B CN109350324B CN201811490185.3A CN201811490185A CN109350324B CN 109350324 B CN109350324 B CN 109350324B CN 201811490185 A CN201811490185 A CN 201811490185A CN 109350324 B CN109350324 B CN 109350324B
- Authority
- CN
- China
- Prior art keywords
- tube
- soft head
- inner tube
- bendable
- pipe
- 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
- 238000002513 implantation Methods 0.000 title claims abstract description 23
- 238000005452 bending Methods 0.000 claims abstract description 7
- 230000000149 penetrating effect Effects 0.000 claims abstract description 3
- 238000002347 injection Methods 0.000 claims description 15
- 239000007924 injection Substances 0.000 claims description 15
- 239000007788 liquid Substances 0.000 claims description 15
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 238000002560 therapeutic procedure Methods 0.000 description 3
- 210000001035 gastrointestinal tract Anatomy 0.000 description 2
- 239000007943 implant Substances 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000003902 lesion Effects 0.000 description 1
- 230000003211 malignant effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 230000002980 postoperative effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 210000002345 respiratory system Anatomy 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
- A61F2/95—Instruments specially adapted for placement or removal of stents or stent-grafts
- A61F2/962—Instruments specially adapted for placement or removal of stents or stent-grafts having an outer sleeve
- A61F2/966—Instruments specially adapted for placement or removal of stents or stent-grafts having an outer sleeve with relative longitudinal movement between outer sleeve and prosthesis, e.g. using a push rod
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/005—Flexible endoscopes
Abstract
The invention discloses a stent implantation device with a bendable distal end, which comprises an inner tube, a middle tube and an outer tube which are sequentially arranged from inside to outside, wherein the distal end of the inner tube is connected with a bendable soft head in a penetrating way, a stent is compressed in a space between the outer tube and the inner tube, and two ends of the stent are respectively abutted against the proximal end of the bendable soft head and the distal end of the middle tube; the outer tube can move back and forth relative to the middle tube, and the outer tube is retracted or the middle tube and the inner tube move forwards together, so that the bracket is released from the space between the outer tube and the inner tube and the original state is restored; the flexible soft head is symmetrically connected with operation wires for controlling the bending of the flexible soft head, the operation wires penetrate through the inner tube and extend out, and the flexible soft head can be driven to bend by pulling the operation wires. The stent implantation device of the invention utilizes the design that the operation wire drives the soft head to bend at one side, can control the soft head to turn through the operation button so as to smoothly pass through the bent angle of the human body cavity, and can continue to operate the device or assist other devices to operate the device through the bent angle.
Description
Technical Field
The invention relates to a stent implantation device in the field of medical equipment, in particular to a stent implantation device with a bendable distal end.
Background
The interventional therapy is an emerging subject integrating image diagnosis and clinical treatment, and is guided by the image equipment to be guided into a focus of a human body through a natural duct or a tiny wound of the human body for minimally invasive treatment, so that the interventional therapy has the advantages of accuracy, safety, high efficiency, wide indication, few complications, small wound, rapid postoperative recovery and the like, has become the first-choice treatment method of some diseases, and is one of three clinical post subjects parallel to the traditional internal and external subjects. The common implant enters the bent angle of the human body cavity, and can not pass through the bent angle continuously, so that the risk of the operation is increased greatly or the operation fails.
Therefore, there is a need to solve the above problems.
Disclosure of Invention
The invention aims to: the invention aims to provide a distal bendable stent implantation device which can smoothly pass through the bent angle of a human body cavity so that the operation can be smoothly, safely and efficiently performed.
The technical scheme is as follows: in order to achieve the above purpose, the invention discloses a stent implantation device with a bendable distal end, which comprises an inner tube, a middle tube and an outer tube which are sequentially arranged from inside to outside, wherein the distal end of the inner tube is connected with a bendable soft head in a penetrating way, a stent is compressed in a space between the outer tube and the inner tube, and two ends of the stent are respectively propped against the proximal end of the bendable soft head and the distal end of the middle tube; the outer tube can move back and forth relative to the middle tube, and the outer tube is retracted or the middle tube and the inner tube move forwards together, so that the bracket is released from the space between the outer tube and the inner tube and returns to the original state; the flexible soft head is symmetrically connected with operation wires for controlling the bending of the flexible soft head, the operation wires penetrate through the inner tube and extend out, and the flexible soft head can be driven to bend by pulling the operation wires.
The flexible soft head comprises a conical soft head part and a columnar flexible connecting part, wherein a plurality of grooves are uniformly formed in the outer wall of the columnar flexible connecting part, and a plurality of connecting discs are formed; the distal end of the operation wire is fixedly connected with the conical soft head and sequentially penetrates through the connecting disc on the columnar bendable connecting part.
Preferably, the cone-shaped soft head and the columnar bendable connecting part are integrally formed.
Furthermore, the proximal end of the outer tube is connected with a front handle, and the front handle can move back and forth along the outer wall of the middle tube under the drive of the front handle; the proximal ends of the middle tube and the inner tube are connected with a rear handle, and the middle tube and the inner tube can move back and forth along the inner wall of the outer tube together under the drive of the rear handle; the outer tube is retracted or the middle tube and the inner tube are advanced together so that the stent is released from the space between the outer tube and the inner tube and returns to its original state.
Further, the operation wire passes through the inner tube and is fixedly connected with an operation button arranged on the rear handle, the operation button can move back and forth along the rear handle, and meanwhile, the operation wire is pulled to drive the bendable soft head to deform and bend at one side. When the implantation device enters the human body cavity, the implantation device encounters a large bent angle part in the human body cavity, and the operation button on the rear handle can be used for bending the soft head at the distal end of the implantation device, so that the bent distal end of the implantation device smoothly passes through the bent part in the human body cavity.
Preferably, the rear handle is connected with a liquid injection joint which is communicated with the inner tube.
And a boosting steel pipe is sleeved between the middle pipe and the inner pipe.
Further, the inner tube is a multi-cavity tube, a guide wire channel, an operation wire channel and a liquid injection channel are arranged in the inner tube, and a guide wire hole communicated with the guide wire channel, a liquid injection hole communicated with the liquid injection channel, an operation wire connecting hole communicated with the operation wire channel and a connecting hole connected with the inner tube are formed in the bendable soft head.
The beneficial effects are that: compared with the prior art, the invention has the following remarkable advantages: firstly, when the operation can not smoothly pass through the bent angle of the human body cavity, the distal end bendable stent implantation device of the invention utilizes the design that the operation wire drives the soft head to bend at one side, can control the soft head to turn through the operation button so as to smoothly pass through the bent angle of the human body cavity, and then can continue to operate the device or assist other devices to operate the device through the bent angle; the invention greatly simplifies the operation difficulty and perforation risk when the instrument passes through the bent angle of the human body cavity, saves the operation time, improves the operation safety, and is suitable for the interventional image treatment and examination of the digestive tract and the interventional image treatment and examination of the respiratory tract; secondly, the inner tube is designed into a multi-cavity tube, so that the traditional interventional therapy is changed, multiple instruments are required to be repeatedly and alternately replaced in the operation process, the time is long, the difficulty is high, and malignant medical accidents such as perforation and the like are easy to occur; the intervention operation is greatly simplified, the operation safety is improved, the number of the used instruments is reduced, and the medical expense of a patient is further reduced.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of an end face of an inner tube according to the present invention;
FIG. 3 is a schematic cross-sectional view of a flexible soft head of the present invention;
fig. 4 is an end view of a flexible soft head according to the present invention.
Detailed Description
The technical scheme of the invention is further described below with reference to the accompanying drawings.
As shown in fig. 1, a distal end bendable stent implantation device of the present invention comprises an inner tube 1, a middle tube 2, an outer tube 3, a bendable soft head 4, a stent 5, an operation wire 6, a front handle 7, a rear handle 8, an operation button 9, a liquid injection joint 10 and a boosting steel tube 11. The inner tube 1, the middle tube 2 and the outer tube 3 are sequentially arranged from inside to outside, a bracket 5 is compressed in a space between the outer tube 3 and the inner tube 1, and two ends of the bracket 5 are respectively abutted against the proximal end of the flexible soft head 4 and the distal end of the middle tube 2; the proximal end of the outer tube 3 is connected with a front handle 7, and the front handle 7 can move back and forth along the outer wall of the middle tube 2 under the drive of the front handle 7; the proximal ends of the middle tube 2 and the inner tube 1 are connected with a rear handle 8, and the middle tube 2 and the inner tube 1 can move back and forth along the inner wall of the outer tube 3 together under the drive of the rear handle 8; the outer tube 3 is retracted or the middle tube 2 and the inner tube 1 are advanced together so that the stent 5 is released from the space between the outer tube 3 and the inner tube 1 and restored to the original state. The outer tube of the invention is made of polytetrafluoroethylene material; the length may be tailored to different preferred lengths depending on the different needs for the breathing, digestive tract, etc. The outer tube functions in conjunction with the flexible head to pass through the body lumen together, thereby allowing other instruments or components to pass smoothly through the desired site. The middle tube is used for pushing out the bracket in the outer tube and delivering the bracket to the lesion part of the natural cavity of the human body. The front handle serves as a hand-held portion for the operator during the insertion of the implant into the body cavity. As shown in fig. 2, the inner tube 1 of the present invention is a multi-lumen tube having a guide wire passage 101, a manipulation wire passage 102, and a filling passage 103 therein, wherein the number of manipulation wire passages 102 is 2. A booster steel pipe 11 is sleeved between the middle pipe 2 and the inner pipe 1, and the booster steel pipe 11 is used for reinforcing the strength of the middle pipe 2 and the inner pipe 1 so that the middle pipe 2 and the inner pipe 1 provide enough supporting force without bending when the bracket 5 is pushed out from the outer pipe 3. The rear handle is used for pushing out the acting point of the bracket, and all the cavities in the inner tube are required to be connected with other instruments through the rear handle. The rear handle 8 is connected with a liquid injection joint 10, and the liquid injection joint 10 is communicated with a liquid injection channel 103 of the inner tube 1.
As shown in fig. 3 and 4, the distal end of the inner tube 1 of the present invention is connected with a flexible head 4 by insertion, and the flexible head 4 is symmetrically connected with operation wires 6 for controlling the bending thereof. The flexible soft head 4 comprises a conical soft head 401 and a columnar flexible connecting part 402, wherein a plurality of grooves are uniformly formed on the outer wall of the columnar flexible connecting part 402, and a plurality of connecting discs 403 are formed; the distal end of the operating wire 6 is fixedly connected with the conical soft head 401 and sequentially passes through the connecting disc 403. Wherein, the cone-shaped soft head 401 and the columnar bendable connecting part 402 can be integrally formed, and the bendable soft head 4 is provided with a guide wire hole 404 communicated with the guide wire channel 101, a liquid injection hole 405 communicated with the liquid injection channel 103, an operation wire connecting hole 406 communicated with the operation wire channel 102 and a connecting hole 407 connected with the inner tube 1. The operation wire 6 passes through the operation wire channel 102 of the inner tube 1 and is fixedly connected with the operation button 9 arranged on the rear handle 8, the operation button 9 can move back and forth along the rear handle 8, and simultaneously, the operation wire 6 is pulled to drive the flexible soft head 4 to deform and bend at one side. When the implantation device enters the human body cavity, the implantation device encounters a large bent angle part in the human body cavity, and the operation button on the rear handle can be used for bending the soft head at the distal end of the implantation device, so that the bent distal end of the implantation device smoothly passes through the bent part in the human body cavity.
After the stent implantation device with the bendable distal end enters the human body cavity, the operation button is pushed to operate the bendable distal end soft head of the implantation device, so that the stent implantation device can smoothly pass through the bent angle of the human body cavity and reach the focus part; the front handle is retracted, and the bracket between the inner tube and the outer tube is released; after reaching the appointed position, the device can be used with other instruments alternately.
Claims (3)
1. A distal flexible stent graft device, characterized by: the flexible pipe comprises an inner pipe (1), a middle pipe (2) and an outer pipe (3) which are sequentially arranged from inside to outside, wherein the distal end of the inner pipe (1) is connected with a flexible soft head (4) in a penetrating way, a bracket (5) is compressed in a space between the outer pipe (3) and the inner pipe (1), and two ends of the bracket (5) are respectively abutted with the proximal end of the flexible soft head (4) and the distal end of the middle pipe (2); the outer tube (3) can move back and forth relative to the middle tube (2), and the outer tube (3) is retracted or the middle tube (2) and the inner tube (1) move forwards together, so that the bracket (5) is released from a space between the outer tube (3) and the inner tube (1) and is restored to an original state; the flexible soft head (4) is symmetrically connected with an operation wire (6) for controlling the bending of the flexible soft head, the operation wire (6) penetrates through the inner tube (1) and stretches out, and the flexible soft head (4) can be driven to bend by pulling the operation wire (6); the bendable soft head (4) comprises a conical soft head (401) and a columnar bendable connecting part (402), wherein a plurality of grooves are uniformly formed in the outer wall of the columnar bendable connecting part (402) and a plurality of connecting discs (403) are formed; the distal end of the operation wire (6) is fixedly connected with the conical soft head part (401) and sequentially passes through the connecting disc (403); the proximal end of the outer tube (3) is connected with a front handle (7), and the front handle (7) can move back and forth along the outer wall of the middle tube (2); the proximal ends of the middle tube (2) and the inner tube (1) are connected with a rear handle (8), and the middle tube and the inner tube can move back and forth along the inner wall of the outer tube (3) together under the drive of the rear handle (8); the outer tube (3) is retracted or the middle tube (2) and the inner tube (1) move forwards together, so that the bracket (5) is released from the space between the outer tube (3) and the inner tube (1) and is restored to the original state; a boosting steel pipe (11) is sleeved between the middle pipe (2) and the inner pipe (1); the rear handle (8) is connected with a liquid injection joint (10), and the liquid injection joint (10) is communicated with the inner tube (1); the inner tube (1) is a multi-cavity tube, a guide wire channel (101), an operation wire channel (102) and a liquid injection channel (103) are arranged in the inner tube, a guide wire hole (404) communicated with the guide wire channel (101), a liquid injection hole (405) communicated with the liquid injection channel (103), an operation wire connecting hole (406) communicated with the operation wire channel (102) and a connecting hole (407) connected with the inner tube (1) are formed in the bendable soft head (4).
2. The distal bendable stent implantation device according to claim 1, wherein: the cone-shaped soft head part (401) and the columnar bendable connecting part (402) are integrally formed.
3. The distal bendable stent implantation device according to claim 1, wherein: the operation wire (6) passes through the inner tube (1) and is fixedly connected with an operation button (9) arranged on the rear handle (8), the operation button (9) can move back and forth along the rear handle (8), and meanwhile, the operation wire (6) is pulled to drive the bendable soft head (4) to deform and bend at one side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811490185.3A CN109350324B (en) | 2018-12-06 | 2018-12-06 | Distal bendable stent implantation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811490185.3A CN109350324B (en) | 2018-12-06 | 2018-12-06 | Distal bendable stent implantation device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109350324A CN109350324A (en) | 2019-02-19 |
| CN109350324B true CN109350324B (en) | 2023-11-14 |
Family
ID=65331430
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811490185.3A Active CN109350324B (en) | 2018-12-06 | 2018-12-06 | Distal bendable stent implantation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109350324B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110448397A (en) * | 2019-08-19 | 2019-11-15 | 北京裕恒佳科技有限公司 | Conveying device |
| CN111796415A (en) * | 2020-07-02 | 2020-10-20 | 瑞泰生医科技股份有限公司 | Bending tube and endoscope |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102395331A (en) * | 2009-02-26 | 2012-03-28 | 埃瓦尔维公司 | Detachment mechanism for implantable fixation devices |
| CN103446655A (en) * | 2013-09-04 | 2013-12-18 | 杭州启明医疗器械有限公司 | Deflectable sheathing canal and delivery system with deflectable sheathing canal |
| WO2015055070A1 (en) * | 2013-10-14 | 2015-04-23 | 黄景陶 | Placement device capable of accurately positioning human body endoluminal stent |
| CN105142708A (en) * | 2013-07-25 | 2015-12-09 | 日本来富恩株式会社 | Catheter having distal end capable of being deflected by operation |
| WO2018023052A1 (en) * | 2016-07-29 | 2018-02-01 | Randolf Von Oepen | Systems and methods for delivering an intravascular device to the mitral annulus |
| WO2018035375A1 (en) * | 2016-08-19 | 2018-02-22 | Edwards Lifesciences Corporation | Steerable delivery system for replacement mitral valve and methods of use |
-
2018
- 2018-12-06 CN CN201811490185.3A patent/CN109350324B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102395331A (en) * | 2009-02-26 | 2012-03-28 | 埃瓦尔维公司 | Detachment mechanism for implantable fixation devices |
| CN105142708A (en) * | 2013-07-25 | 2015-12-09 | 日本来富恩株式会社 | Catheter having distal end capable of being deflected by operation |
| CN103446655A (en) * | 2013-09-04 | 2013-12-18 | 杭州启明医疗器械有限公司 | Deflectable sheathing canal and delivery system with deflectable sheathing canal |
| WO2015055070A1 (en) * | 2013-10-14 | 2015-04-23 | 黄景陶 | Placement device capable of accurately positioning human body endoluminal stent |
| WO2018023052A1 (en) * | 2016-07-29 | 2018-02-01 | Randolf Von Oepen | Systems and methods for delivering an intravascular device to the mitral annulus |
| WO2018035375A1 (en) * | 2016-08-19 | 2018-02-22 | Edwards Lifesciences Corporation | Steerable delivery system for replacement mitral valve and methods of use |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109350324A (en) | 2019-02-19 |
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| PB01 | Publication | ||
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| CB02 | Change of applicant information |
Address after: No.57 Huayuan Avenue, economic development zone, Gaochun District, Nanjing City, Jiangsu Province Applicant after: NANJING FMT MEDICAL Co.,Ltd. Address before: 210032 the four layer of B block, Ding Ye Bai Tai biological building, No. 10, Spark Road, Nanjing high tech Industrial Development Zone, Jiangsu, China. Applicant before: NANJING FMT MEDICAL Co.,Ltd. |
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