CN107374792B - An integrated layered stent implanter - Google Patents
An integrated layered stent implanter Download PDFInfo
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- CN107374792B CN107374792B CN201710601970.0A CN201710601970A CN107374792B CN 107374792 B CN107374792 B CN 107374792B CN 201710601970 A CN201710601970 A CN 201710601970A CN 107374792 B CN107374792 B CN 107374792B
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- positioning lock
- outer tube
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- 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
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
- A61N5/1001—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy using radiation sources introduced into or applied onto the body; brachytherapy
- A61N5/1007—Arrangements or means for the introduction of sources into the body
-
- 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
- A61F2240/00—Manufacturing or designing of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2240/001—Designing or manufacturing processes
-
- 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
- A61F2250/00—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2250/0058—Additional features; Implant or prostheses properties not otherwise provided for
- A61F2250/0096—Markers and sensors for detecting a position or changes of a position of an implant, e.g. RF sensors, ultrasound markers
- A61F2250/0098—Markers and sensors for detecting a position or changes of a position of an implant, e.g. RF sensors, ultrasound markers radio-opaque, e.g. radio-opaque markers
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
- A61N5/1001—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy using radiation sources introduced into or applied onto the body; brachytherapy
- A61N2005/1019—Sources therefor
- A61N2005/1024—Seeds
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
- A61N2005/1092—Details
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- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- General Health & Medical Sciences (AREA)
- Veterinary Medicine (AREA)
- Public Health (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Radiology & Medical Imaging (AREA)
- Pathology (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Media Introduction/Drainage Providing Device (AREA)
- Prostheses (AREA)
Abstract
本发明提供了一种一体式分层支架植入器，包括从内到外依次设置的内管、中管和外管，所述外管为用于容纳两个以上依次顺序排列支架的结构；所述中管用于抵接所述依次顺序排列支架；内管近端连接内管控制手柄，中管近端连接中管控制手柄，所述内管远端连接到软头，所述外管近端连接外管控制手柄；内管在内管控制手柄的控制下，在中管内前后移动；外管在外管控制手柄的控制下，在中管外部前后移动；外管控制手柄后撤，使得两个以上依次顺序排列支架顺序释放。所述外管内容纳两个支架，第一个支架释放后，内管控制手柄控制内管向近端后撤。所述中管远端外圈设有推送环和支架定位块。所述外管控制手柄近端的中管上设有定位锁。
The present invention provides an integrated layered stent implanter, comprising an inner tube, a middle tube and an outer tube arranged in sequence from the inside to the outside, wherein the outer tube is a structure for accommodating two or more stents arranged in sequence; the middle tube is used to abut the stents arranged in sequence; the inner tube proximal end is connected to the inner tube control handle, the middle tube proximal end is connected to the middle tube control handle, the inner tube distal end is connected to the soft head, and the outer tube proximal end is connected to the outer tube control handle; the inner tube moves forward and backward in the middle tube under the control of the inner tube control handle; the outer tube moves forward and backward outside the middle tube under the control of the outer tube control handle; the outer tube control handle is withdrawn so that the two or more stents arranged in sequence are released in sequence. Two stents are accommodated in the outer tube, and after the first stent is released, the inner tube control handle controls the inner tube to withdraw toward the proximal end. A push ring and a stent positioning block are provided on the outer ring at the distal end of the middle tube. A positioning lock is provided on the middle tube at the proximal end of the outer tube control handle.
Description
Technical Field
The invention relates to the field of medical equipment, in particular to an integrated layered bracket implanter.
Background
As is known, the traditional treatment method of bile duct cancer is surgical operation, but only 20% of tumors are likely to be resected by operation, for the patients who cannot be resected, biliary intestinal anastomosis or biliary tract T-tube external drainage operation is selected as palliative treatment, and although the treatment can effectively relieve obstruction and improve clinical symptoms, the treatment has some problems, such as great operation difficulty, more early complications, postoperative biliary tract infection and the like, so that the palliative operation method has poor curative effect, large wound and low life quality, and the bile duct cancer is always one of the problems of surgical treatment.
In 1979, a method for treating biliary stenosis by placing a biliary tract plastic stent through a duodenal papilla by using an endoscope is invented and successfully achieved, and the method becomes a palliative treatment method with good effect for relieving biliary tract cancer, has the advantages of small trauma, less complications, definite curative effect and the like, can relieve jaundice of a patient, improves the general condition, but the plastic stent is generally used for 3 months, most of the stents are blocked after more than 6 months, and the stent needs to be taken out and put into the stent again. Complications of endoscopic plastic stent placement biliary drainage are mainly pancreatitis, retrograde biliary tract infection and stent displacement or blockage.
With the development of endoscopy and interventional radiology, a minimally invasive ERCP or PTCD method is utilized to treat bile duct cancer, external drainage is changed into internal drainage, the operation is simple, better treatment effects are obtained, and China is gradually developed in nineties of the last century. The metal stent biliary drainage has small trauma, the thinner catheter can be used for implanting a stent with larger diameter, the early complications are less, the operation mortality is low, the metal stent can be self-expanded to the original diameter after being placed into a narrow biliary tract, and continuous expansion force is generated on the narrow tube wall, so that the stability of the stent is maintained.
Metal stent treatment is a better method for treating bile duct cancer stenosis at present, but with the application of new technology, the application of the current biliary stent has some limitations, for example, the current metal stent can only be used as palliative treatment, and long-term curative effect on bile duct cancer is still not optimistic. Therefore, if the stent is expanded and can carry out targeted local radiotherapy, the toxic and side effects of the whole body radiotherapy can be reduced, the treatment can be better, the current biliary tract radiotherapy stent which can carry radioactive particles can achieve a good effect, and the side surface of the stent is provided with the radioactive particle filling bag.
However, the invention has a disadvantage that the wire of the stent of the invention cannot be designed too tightly due to the limitation of the diameter of the operation cavity, so that the supporting force is smaller, after the stent is placed at the lesion position, a conventional biliary tract metal stent needs to be released in the stent, the stent is positioned right in the middle of the radiotherapy particle stent, the narrow part of the bile duct is also supported while the radiotherapy stent is supported, the radiotherapy stent is fixed to avoid displacement, and the two stents are required to be released twice in the operation at present, so that the cost is relatively high.
Disclosure of Invention
The invention aims to solve the technical problem of providing an integrated layered bracket implanter aiming at the defects of the prior art.
In order to solve the technical problems, the invention provides an integrated layered stent implanter which is characterized by comprising an inner tube (6), a middle tube (5) and an outer tube (3) which are sequentially arranged from inside to outside, wherein the outer tube (3) is of a structure for containing more than two sequentially arranged stents, the middle tube (5) is used for abutting against the sequentially arranged stents, the proximal end of the inner tube is connected with an inner tube control handle (13), the proximal end of the middle tube is connected with a middle tube control handle (12), the distal end of the inner tube is connected with a soft head (1), the proximal end of the outer tube (3) is connected with an outer tube control handle (8), the inner tube (6) moves back and forth in the middle tube (5) under the control of the inner tube control handle (13), the outer tube (3) moves back and forth outside the middle tube (5) under the control of the outer tube control handle (8), and the outer tube control handle (8) withdraws so that more than two sequentially arranged stents are sequentially released.
The outer tube (3) accommodates two sequentially ordered brackets, the distal end butt of well pipe (5) is nested in the first bracket on inner tube (6), and after outer tube (3) back was withdrawn makes first bracket release, inner tube control handle (13) can control inner tube (6) to the proximal end back, conveniently releases the second bracket.
The outer tube wall of well pipe (5) is equipped with push ring (2), and push ring (2) are used for the butt nest outside second support of well pipe (5), and outer tube (3) back is removed and is made the release of second support.
The outer tube wall of the middle tube (5) is provided with a bracket positioning block (4) for positioning the second bracket.
A positioning lock is arranged on the middle tube (5) at the proximal end of the outer tube control handle (8).
The positioning lock comprises a positioning lock button (14), a positioning lock shell (16) and a positioning lock spring (15), wherein the positioning lock shell (16) is sleeved outside the positioning lock button (14), the positioning lock spring (15) is arranged between the positioning lock button (14) and the positioning lock shell (16), and the middle pipe (5) passes through the positioning lock button (14) and the positioning lock shell (16).
The positioning lock comprises a claw (21) and a positioning lock nut (20), wherein the claw (21) is arranged on the middle pipe (5), the positioning lock nut (20) is arranged outside the claw (21), the positioning lock nut (20) is screwed down, and the claw (21) is driven to press the middle pipe (5).
The outer wall of the far end of the inner tube (6) is provided with a sand blasting surface layer (25) or small pits (19).
The outer tube control handle (8) comprises a tee joint, and a liquid injection port (18) is arranged on the tee joint.
A luer connector (17) is arranged between the inner tube control handle (13) and the middle tube control handle (12).
The invention has the beneficial effects that the outer layer bracket and the inner layer bracket can be released simultaneously, the bracket release operation time is greatly shortened, the pain and the infection probability of a patient caused by secondary access to the implanter are reduced, the cost of implanted products is saved, and the patient can really benefit.
Drawings
The foregoing and other advantages of the invention will become more apparent from the following detailed description of the invention when taken in conjunction with the accompanying drawings and detailed description.
FIG. 1 is a schematic diagram of the overall structure of an embodiment;
FIG. 2 is a fragmentary enlarged view of FIG. 1 showing a stent mounted in a contracted configuration in an integrated layered stent implanter;
FIG. 2a is an enlarged view of a portion of FIG. 2;
FIG. 3 is a schematic view of a first embodiment of a lock configuration;
FIG. 4 is a schematic view of a notched inner tube;
FIG. 5 is a schematic view of a surface blasted inner tube;
FIG. 6 is a schematic view of a free-state planar configuration of a particle capsule stent mounted in an integrated layered stent implanter;
FIG. 7 is a schematic perspective view of a free state of a particle capsule scaffold mounted in an integrated layered scaffold implanter;
FIG. 8 is a schematic radial cross-sectional view of the inner tube of FIG. 4;
Fig. 9 is a schematic structural view of the positioning lock of the second embodiment.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
Examples
1-9, The embodiment provides an integrated layered stent implanter, which comprises 1, a soft head, 2, a push ring, 3, an outer tube, 4, a stent positioning block, 5, a middle tube, 6, an inner tube, 7, a distal end nut, 8, an outer tube control handle, 9, a sealing ring, 10 and a proximal end
The invention discloses a medical device which comprises a nut, a first positioning lock, a middle tube control handle, a 13, an inner tube control handle, a 17 and a luer connector, wherein the proximal end of the medical device is close to one end of an operator, and the distal end of the medical device enters one end of a human body.
The soft head 1 is mounted on the distal end of the inner tube 6, the inner tube 6 is mounted on the proximal end with an inner tube control handle 13, the inner tube control handle 13 is connected to the middle tube control handle 12 by a rotatable luer fitting 17, and the inner tube 6 and the middle tube 5 are fixed together at the beginning of release.
The support positioning block 4 is sleeved on the far end of the middle tube 5 at a certain distance, and the middle tube 5 is connected with a middle tube control handle 12. The proximal end of the middle tube is connected with the middle tube control handle 12, and the middle tube control handle 12 is provided with a luer connector 17 which is convenient to be fixed with the inner tube 6.
The outer tube control handle 8 is installed on the proximal end of the outer tube 3, the outer tube control handle 8 comprises a tee joint, a liquid injection port 18 is arranged on the tee joint, liquid or contrast agent and the like are conveniently injected, during assembly, the inner tube 6 is penetrated into the middle tube 5, then the inner tube 6 and the middle tube are penetrated into the outer tube provided with the tee joint together, and then the inner tube 6 is bonded with the soft head 1. A sealing ring 9 is arranged between the tee joint and the outer tube 3, and a distal end nut 7 and a proximal end nut 10 are arranged on the tee joint.
The inner tube 6 is preferably made of metal, has small diameter and good rigidity, meets the medical grade requirement, has a hollow structure, and has the aperture capable of passing through a 0.035' guide wire.
As shown in fig. 4 and 5, the distal end of the inner tube 6 extends from the proximal end of the soft head 1 to the positioning block of the inner support, and a sandblasted surface layer 25 or small pits 19 are added on the surface to increase the reflective area, thereby achieving the purpose of enhancing development, the depth h of the small pits 19 does not exceed 1/3 of the thickness T of the inner tube, and the diameter d of the small pits 19 is 0.10 mm-0.2 mm, which is used for enhancing the developability of the inner tube under X-ray.
As shown in fig. 3, the positioning lock is the positioning lock 11 of the first aspect, which comprises a positioning lock button 14, a positioning lock housing 16 and a positioning lock spring 15, wherein the positioning lock spring 15 is arranged between the positioning lock button 14 and the positioning lock housing 16, and the middle tube 5 passes through the positioning lock button 14.
Fig. 9 is a schematic structural view of the positioning lock of the second embodiment. The locating lock of the second scheme comprises a claw (21) and a locating lock nut (20), wherein the claw (21) is arranged on the middle pipe (5), the locating lock nut (20) is arranged outside the claw (21), the locating lock nut (20) is screwed down, and the claw (21) is driven to press the middle pipe (5).
The preparation method of the invention comprises the following steps:
The soft head 1 is arranged at the distal end of the inner tube 6, the inner tube 6 is provided with an inner tube control handle 13 at the proximal end, the inner tube control handle 13 is connected with the middle tube control handle 12 through a rotatable luer joint 17, and the inner tube 6 and the middle tube 5 are fixed together at the beginning of release;
the bracket positioning block 4 is sleeved on the far end of the middle tube 5 at a certain distance, and then the middle tube control handle 12 is installed;
The tee joint is arranged at the proximal end of the outer tube 3, a liquid injection port 18 is arranged on the tee joint, liquid or contrast agent and the like are conveniently injected, when the tee joint is assembled, the inner tube 6 is penetrated into the middle tube 5, then the inner tube 6 and the middle tube 5 are penetrated into the outer tube 3 provided with the tee joint together, and then the inner tube 6 is bonded with the soft head 1;
The length of the middle tube 5 is determined according to the fixed length of the support, the middle tube control handle 12 is bonded, the inner tube control handle 13 is bonded, and before the inner tube control handle 13 is bonded, the positioning lock is assembled on the middle tube 5, and the implant assembly is completed.
The using method comprises the following steps:
Firstly, a middle tube control handle 12 of the integrated layered stent implanter is fixed, an outer tube 3 is retracted towards the proximal end, the middle tube is exposed, an inner layer stent 23 is contracted, the proximal end is firstly fixed on a stent positioning block 4, then the outer tube 3 is pushed towards the distal end slowly, the inner layer stent 23 is gradually contracted and gradually surrounded by the outer tube 3, when the inner layer stent 23 completely enters the outer tube 3, pushing of the outer tube 3 is stopped, at this time, an inner tube 6 is pushed towards the distal end, when the inner tube is pushed to the foremost end, the inner tube 6 and the middle tube 5 are mutually connected and fixed through a luer joint 17, the relative positions of the inner tube 6 and the middle tube 5 are kept unchanged, an outer layer stent 24 is furled and placed on the inner tube 6, the proximal end is aligned with the distal end of the middle tube 5, then the outer tube 3 is pushed slowly, the outer layer stent 24 is furled into the outer tube 3 slowly, and the distal end of the middle tube 5 plays a role of pushing the outer layer stent 24 because the proximal end of the outer layer stent 24 is aligned with the distal end of the middle tube 5.
The first positioning lock on the middle tube 5 needs to adjust the position according to the length of the outer support 24, the purpose of the positioning lock is to ensure that the first outer support 24 can be smoothly released, but the second support needs to adjust the positioning lock to the second scale position to release. The principle is similar to a spring rope buckle.
The outer layer bracket 24 and the inner layer bracket 23 are respectively arranged on the inner tube 6 and the middle tube 5, the outer tube 3 is sleeved together, the outer tube 3 is pulled back when released, the outer layer bracket 24 is released, the inner tube 6 is pulled back to be flush with the outer tube 3, the integrated implanter is pushed into the outer layer bracket 24 to the far end, the outer tube is pulled back again at this time, the inner layer bracket 23 is released, the outer layer bracket 24 is opened by the inner layer bracket 23, and the lesion parts such as therapeutic medicines and the like carried on the outer layer bracket 24 are more attached.
The integrated implanter can be used for simultaneously implanting the inner and outer brackets, avoids replacing the implanter for the second time, is convenient for placing the brackets to the required positions, and is convenient and safe for bracket implantation.
The invention has the working principle that the outer layer bracket and the inner layer bracket are respectively arranged on the inner pipe and the middle pipe, the outer pipe is sleeved together, the outer pipe is retracted when the outer pipe is released, the outer layer bracket is released, the inner pipe is retracted to be flush with the outer pipe, the bracket implanter is sent into the outer layer bracket to the far end, the outer pipe is retracted again, the inner layer bracket is released, the outer layer bracket is opened by the inner layer bracket, the medicine and the like carried on the outer layer bracket are closer to the lesion part, and better therapeutic effect is obtained.
In the process of implanting a stent requiring the mutual nested release of two stents, the operable space in the human organ is very limited, and the continuous release of multiple stents cannot be performed in the prior art because the outer tube having the length of two stents is not spatially operated. In the present invention, the inner tube can be retracted after the outer stent 24 is released, thereby shortening the overall length of the implanter after the outer stent is released, so that the inner stent 23 can be placed as normally as the outer stent 24. If the inner tube is not in a retracted design, the inner tube enters the focus position, and after the outer stent 24 is released, the inner tube is difficult to move forward or the inner stent 23 is difficult to release inside the outer stent 24 because the inner tube can cause damage to certain organs of the human body. Therefore, the inner tube 6 is withdrawn, the inner tube 6 and the middle tube 5 are positioned at the same port, the implanter is integrally moved forward, the outer tube 3 is withdrawn, and the inner layer bracket 23 on the middle tube 5 is released.
The outer stent of the present invention is not limited to the particle sac stent, and a structure requiring a double-layered stent is within the scope of the present invention.
Examples
Example 2 also discloses a method of use:
Before an operation, the sterilization package is firstly disassembled, the integrated layered stent implanter is taken out, the outer tube 3 is firstly withdrawn to the scale position of the tube 5 in the stent implanter, and only the capsule body of the outer layer stent 24 carrying the therapeutic drug can be ensured to be exposed, but not to be completely withdrawn from the outer tube 3;
Loading the radioactive particles into the capsule bodies, loading the particle capsules into the outer tube (3) in each row, and loading the outer layer support 24 into the outer tube 3 when all the particles are loaded;
During the operation, the integral layered support implanter is penetrated from the small hole of the soft head 1 along the proximal end of the guide wire remained in the patient, the integral layered support implanter is sent into the patient, the lesion position is checked under the image, when the lesion position is reached, the integral layered support implanter is slowly moved forward, the outer layer support 24 is positioned at the middle position of the lesion, at this time, the middle tube control handle 12 is kept still, the outer tube 3 is slowly withdrawn proximally, the outer layer support 24 is pushed by the middle tube 5 and slowly released from the outer tube 3, after the outer tube 3 is withdrawn to the positioning lock, the outer layer support 24 is completely released, at this time, the proximal end of the outer tube 3 is stopped, the distal end of the integral layered support implanter is kept still, the luer joint 17 at the proximal end of the inner tube 6 is unlocked, the inner tube 6 is then withdrawn back until the lesion position is reached, the soft head 1 is overlapped with the outer tube 3, then the integral layered support implanter is slowly extended, the inner layer support implanter is slowly retracted, the layered support 24 is slowly pulled back through the outer tube 3, when the inner layer support 23 is not completely released, at least the inner layer 23 is still released, when the inner layer 23 is not completely released, the inner layer 23 is not completely released, the inner layer 23 is completely is released, the inner layer 23 is slowly released, when the inner layer 23 is completely is not released through the inner layer support 3 is completely, at least, the inner layer 23 is released, when the inner layer 23 is completely is released, and the inner layer is completely is released, and the integrated implanter is completely withdrawn from the patient, and the released inner layer bracket 23 can fully expand the outer layer bracket 24 to make up for the problem of insufficient supporting force of the outer layer bracket 24, so that the medicaments such as radioactive particles of the outer layer bracket 24 are completely attached to the focus part, and targeted radiotherapy is carried out on the focus part, thereby reducing the toxic and side effects of the whole body radiotherapy of the patient.
Examples
As shown in fig. 9, this embodiment discloses another positioning lock structure, which comprises a positioning lock nut 20 and a claw 21, wherein the claw 21 is installed on the middle tube 5, the positioning lock nut 20 is arranged outside the claw 21, and the positioning lock nut 20 is screwed down to drive the claw 21 to press the middle tube 5.
The invention provides an integrated layered stent implanter, two stents can be nested and used, and can also be different in size and used in different lesion positions, namely, the condition that the two stents need to be implanted, the method and the way for realizing the technical scheme are numerous, the above is only the preferred embodiment of the invention, and it should be pointed out that a plurality of improvements and modifications can be made by those skilled in the art without departing from the principle of the invention, and the improvements and the modifications are also considered as the protection scope of the invention. The components not explicitly described in this embodiment can be implemented by using the prior art.
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710601970.0A CN107374792B (en) | 2017-07-21 | 2017-07-21 | An integrated layered stent implanter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710601970.0A CN107374792B (en) | 2017-07-21 | 2017-07-21 | An integrated layered stent implanter |
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| Publication Number | Publication Date |
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| CN107374792A CN107374792A (en) | 2017-11-24 |
| CN107374792B true CN107374792B (en) | 2024-12-03 |
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| CN201710601970.0A Active CN107374792B (en) | 2017-07-21 | 2017-07-21 | An integrated layered stent implanter |
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| CN120770992A (en) * | 2018-06-13 | 2025-10-14 | 南微医学科技股份有限公司 | Hot puncture stent imbedding device |
| CN108852575B (en) * | 2018-07-11 | 2023-11-10 | 浙江巴泰医疗科技有限公司 | A multi-section application operating system of a closed self-expanding unit stent |
| CN110870813A (en) * | 2018-09-03 | 2020-03-10 | 南微医学科技股份有限公司 | Medical instrument imbedding device |
| CN109350321B (en) * | 2018-12-06 | 2024-08-13 | 南京法迈特科技发展有限公司 | Stent implant device in visual state |
| CN109350326A (en) * | 2018-12-06 | 2019-02-19 | 南京法迈特科技发展有限公司 | Double bracket implanted device under visibility status |
| CN109350319B (en) * | 2018-12-06 | 2024-05-14 | 南京法迈特科技发展有限公司 | Implant device with packing support structure |
| CN109350322B (en) * | 2018-12-06 | 2024-03-22 | 南京法迈特科技发展有限公司 | Double-bracket implantation device |
| CN111632261B (en) * | 2020-06-11 | 2022-09-09 | 潍坊医学院附属医院 | An implantable device for internal radiotherapy |
| CN111759555B (en) * | 2020-08-11 | 2026-04-10 | 乐普（北京）医疗器械股份有限公司 | Self-expanding support system |
| CN112842643A (en) * | 2021-02-09 | 2021-05-28 | 上海澳华内镜股份有限公司 | Combined support, conveyor and system |
| CN116898645A (en) * | 2023-08-11 | 2023-10-20 | 南京融晟医疗科技有限公司 | A double-layer particle-carrying stent transporter |
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| CN208625933U (en) * | 2017-07-21 | 2019-03-22 | 南京微创医学科技股份有限公司 | A kind of integral type layered-scaffold implanting device |
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| CN103142336B (en) * | 2013-03-29 | 2014-12-10 | 孙思予 | One-piece stent inserter |
| CN205215460U (en) * | 2015-11-24 | 2016-05-11 | 常州乐奥医疗科技有限公司 | But withdrawing's vascular support conveying system |
| CN205144808U (en) * | 2015-11-25 | 2016-04-13 | 常州乐奥医疗科技有限公司 | Support conveying system of sheath is stabilized in area |
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| CN208625933U (en) * | 2017-07-21 | 2019-03-22 | 南京微创医学科技股份有限公司 | A kind of integral type layered-scaffold implanting device |
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