CN109044502B - A docking positioning device - Google Patents
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- CN109044502B CN109044502B CN201811027050.3A CN201811027050A CN109044502B CN 109044502 B CN109044502 B CN 109044502B CN 201811027050 A CN201811027050 A CN 201811027050A CN 109044502 B CN109044502 B CN 109044502B
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- 238000003032 molecular docking Methods 0.000 title claims abstract description 29
- 230000007246 mechanism Effects 0.000 claims description 34
- 210000001503 joint Anatomy 0.000 claims description 28
- 239000012528 membrane Substances 0.000 claims description 11
- WBWJXRJARNTNBL-UHFFFAOYSA-N [Fe].[Cr].[Co] Chemical compound [Fe].[Cr].[Co] WBWJXRJARNTNBL-UHFFFAOYSA-N 0.000 claims description 3
- 230000001154 acute effect Effects 0.000 claims description 3
- 229910000828 alnico Inorganic materials 0.000 claims description 3
- 229910001172 neodymium magnet Inorganic materials 0.000 claims description 3
- 239000013307 optical fiber Substances 0.000 claims description 3
- 229910000938 samarium–cobalt magnet Inorganic materials 0.000 claims description 3
- 229910000859 α-Fe Inorganic materials 0.000 claims description 3
- 238000003384 imaging method Methods 0.000 abstract description 3
- 238000001356 surgical procedure Methods 0.000 abstract description 3
- 210000004204 blood vessel Anatomy 0.000 description 11
- 238000000034 method Methods 0.000 description 8
- 238000001179 sorption measurement Methods 0.000 description 7
- 238000011084 recovery Methods 0.000 description 6
- 238000011282 treatment Methods 0.000 description 6
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- 230000008569 process Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
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- 208000027418 Wounds and injury Diseases 0.000 description 2
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- 239000008280 blood Substances 0.000 description 2
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- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000013152 interventional procedure Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 208000019553 vascular disease Diseases 0.000 description 2
- 206010002329 Aneurysm Diseases 0.000 description 1
- 201000001320 Atherosclerosis Diseases 0.000 description 1
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical compound [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 description 1
- 208000002223 abdominal aortic aneurysm Diseases 0.000 description 1
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- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/34—Trocars; Puncturing needles
- A61B17/3403—Needle locating or guiding means
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/34—Trocars; Puncturing needles
- A61B17/3494—Trocars; Puncturing needles with safety means for protection against accidental cutting or pricking, e.g. limiting insertion depth, pressure sensors
- A61B17/3496—Protecting sleeves or inner probes; Retractable tips
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/34—Trocars; Puncturing needles
- A61B17/3403—Needle locating or guiding means
- A61B2017/3405—Needle locating or guiding means using mechanical guide means
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- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
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- Pathology (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
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Abstract
本发明公开了一种对接定位装置，属于医疗器械技术领域。本发明所提供的对接定位装置包括导向端、对接端和调节器，导向端用于在待操作组织的一侧引导方向，对接端用于对接在待操作组织的另一侧，导向端上设置第一磁极，对接端设置第二磁极，调节器能够调整第二磁极的位置和角度，使第二磁极运动至第一磁极附近，并正对第一磁极设置。通过利用第一磁极和第二磁极靠近后的相互吸引能够实现对接端与导向端精确对准，不仅有利于降低后续手术操作的难度，提高手术精度和手术效率，还能够降低手术对手术器械、医护人员自身经验和影像设备的要求。
The present invention discloses a docking positioning device, which belongs to the technical field of medical devices. The docking positioning device provided by the present invention includes a guide end, a docking end and an adjuster, wherein the guide end is used to guide the direction on one side of the tissue to be operated, and the docking end is used to dock on the other side of the tissue to be operated, a first magnetic pole is arranged on the guide end, and a second magnetic pole is arranged on the docking end, and the adjuster can adjust the position and angle of the second magnetic pole so that the second magnetic pole moves to the vicinity of the first magnetic pole and is arranged directly opposite to the first magnetic pole. By utilizing the mutual attraction between the first magnetic pole and the second magnetic pole after they are close to each other, the docking end and the guide end can be accurately aligned, which is not only conducive to reducing the difficulty of subsequent surgical operations, improving surgical accuracy and efficiency, but also can reduce the requirements of the surgery on surgical instruments, the experience of medical staff themselves and imaging equipment.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a butt joint positioning device.
Background
With the improvement of the living standard of people, the diet of people is mostly higher than that of oil and salt, so that the load of blood vessels is heavier and heavier, and the incidence rate of vascular diseases is higher and higher, and especially diseases such as aneurysms, atherosclerosis and the like are more common. For such vascular diseases, existing treatment protocols are generally interventional surgical treatments with interventional medical devices. Interventional procedures have become an emerging treatment in parallel with surgical and medical treatments. Compared with the traditional surgical treatment method, the interventional treatment has the advantages of small wound, simplicity, convenience, safety, effectiveness, less complications, obvious reduction of hospitalization time and the like.
When an interventional therapy is used, the operations of opening holes, suturing and the like on two sides of a diaphragm, a tissue or a covered stent are often encountered. For example, in the minimally invasive treatment of abdominal aortic aneurysms of renal arteries, occlusion of the branch vessel is often encountered, where in situ windowing techniques are required to accurately position fenestrations on both sides of the stent, and then reconstruct the branch vessel at the fenestration site. In the prior art, imaging equipment is generally adopted to image the windowing part, and medical staff positions the windowing part by utilizing small-size instruments through self experience under the guidance of the imaging equipment, so that windowing operation is completed. However, the method is difficult to position, the windowing direction is difficult to control, and the requirements on the experience of medical instruments and medical staff are high.
Therefore, how to realize accurate positioning and windowing at the target position is a technical problem to be solved.
Disclosure of Invention
The invention aims to provide a butt joint positioning device which is convenient to operate, can realize accurate positioning of two sides of target tissues, and improves operation precision and treatment effect.
To achieve the purpose, the invention adopts the following technical scheme:
A docking positioning device, comprising:
the guiding end is used for guiding the direction at one side of the tissue to be operated, and a first magnetic pole is arranged at one end, close to the tissue to be operated, of the guiding end;
the butt joint end is used for butt joint on the other side of the tissue to be operated, and a second magnetic pole is arranged at one end close to the tissue to be operated;
an adjuster for adjusting the position and/or angle of the second pole relative to the first pole;
The second magnetic pole and the first magnetic pole can mutually attract to butt the butt joint end and the guide end after being close to each other.
Preferably, the guide end comprises a positioning bracket, and the first magnetic pole is arranged on the positioning bracket.
Preferably, the positioning bracket is spherical, cylindrical or fusiform.
Preferably, the butt end includes a catheter seat and a catheter connected to each other, and a first guide through hole is provided along an axial direction of the catheter seat and the catheter.
Preferably, the second magnetic pole is arranged at the free end of the guide pipe, and a second guide through hole is arranged on the second magnetic pole and is communicated with the first guide through hole.
Preferably, the regulator comprises a regulator body and a traction wire, one end of the traction wire is connected with the regulator body, and the other end of the traction wire is connected with the free end of the catheter.
Preferably, the adjuster body comprises a fixed seat, a traction block and a knob, the knob is sleeved outside the fixed seat, the traction block is located between the knob and the fixed seat and is respectively in threaded connection with the knob and the fixed seat, and one end of the traction wire is connected with the traction block.
Preferably, a guide wire hole for allowing the traction wire to pass through is arranged on the pipe wall of the catheter.
Preferably, the regulator is integrally formed with the catheter hub.
Preferably, the angle between the axis of the regulator and the axis of the catheter seat is an acute angle.
Preferably, the first magnetic pole and the second magnetic pole are permanent magnets, and the polarities of the opposite ends of the first magnetic pole and the second magnetic pole are opposite.
Preferably, the permanent magnet is a samarium cobalt magnet, a neodymium iron boron magnet, a ferrite magnet, an alnico magnet or an iron chromium cobalt magnet.
Preferably, the first magnetic pole and the second magnetic pole are electromagnets.
Preferably, the docking and positioning device further comprises:
the operation mechanism can pass through the butt joint end to perform operation on the tissue to be operated.
Preferably, the working mechanism is a window opening mechanism or a stitching mechanism.
Preferably, the windowing mechanism is a membrane-breaking needle or an optical fiber.
Preferably, a guide structure is arranged on the first magnetic pole, and the windowing mechanism can enter the guide structure after windowing on the tissue to be operated.
The invention has the beneficial effects that:
the invention provides a butt joint positioning device which comprises a guide end, a butt joint end and a regulator, wherein the guide end is used for guiding a direction at one side of a tissue to be operated, the butt joint end is used for butt joint at the other side of the tissue to be operated, a first magnetic pole is arranged on the guide end, a second magnetic pole is arranged on the butt joint end, and the regulator can adjust the position and angle of the second magnetic pole to enable the second magnetic pole to move to the vicinity of the first magnetic pole and to be opposite to the first magnetic pole. The butt joint end and the guide end can be accurately aligned by utilizing the mutual attraction of the first magnetic pole and the second magnetic pole after the first magnetic pole and the second magnetic pole are close to each other, so that the difficulty of subsequent operation is reduced, the operation precision and the operation efficiency are improved, and the requirements of the operation on the operation instrument, the self experience of medical staff and the image equipment can be reduced.
Drawings
FIG. 1 is a schematic view of a docking and positioning apparatus provided by the present invention;
FIG. 2 is a schematic view of a guide end according to the present invention;
FIG. 3 is a schematic view of a conveying mechanism according to the present invention;
FIG. 4 is a schematic view of a butt end according to the present invention;
FIG. 5 is a cross-sectional view of a butt end provided by the present invention;
FIG. 6 is a cross-sectional view taken along the direction A-A in FIG. 5;
FIG. 7 is a schematic diagram of a regulator provided by the present invention;
FIG. 8 is a diagram of the use of the docking and positioning device and the transport mechanism provided by the present invention;
Fig. 9 is an enlarged view of a part of the structure of fig. 8.
In the figure:
100. Aortic blood vessels; 200. branching blood vessels;
1. a guide end; 11. a delivery end; 12. an annular frame; 13. a connecting rod;
2. The tissue to be operated;
3. A first magnetic pole; 31. a guide structure;
4. a butt joint end; 41. a catheter holder; 42. a conduit;
5. A second magnetic pole;
6. A membrane rupture needle; 61. a membrane rupture needle stand; 62. a membrane rupture needle tube; 63. a membrane rupture needle head;
7. A regulator; 71. a knob; 72. a traction block; 73. a fixing seat; 74. traction wire; 75. a rear cover;
8. A conveying mechanism; 81. a delivery tube; 82. a conveying seat; 83. recovering the silk; 84. a storage chamber; 85. and a deflector hole.
Detailed Description
The technical scheme of the invention is further described below by the specific embodiments with reference to the accompanying drawings.
The present embodiment provides a docking and positioning device that can be applied to an interventional procedure for performing a windowing or suturing operation on a tissue 2 to be operated, where the tissue 2 to be operated may be a septum, a vessel wall, or a stent graft placed in an aortic vessel 100, etc. In the present embodiment, the operation of performing a windowing operation on the stent graft in the aortic blood vessel 100 will be described as an example. As shown in fig. 1, the docking positioning device specifically includes a guide end 1, a docking end 4, and an adjustor 7. Wherein, be provided with first magnetic pole 3 on the guide tip 1, be provided with second magnetic pole 5 on the butt joint end 4. One end of the regulator 7 is connected with one end of the butt joint end 4 provided with the second magnetic pole 5, and the position of the second magnetic pole 5 relative to the first magnetic pole 3 can be changed by regulating the regulator 7, so that the second magnetic pole 5 is close to the first magnetic pole 3 and reaches the adsorption range of the first magnetic pole 3. After the second magnetic pole 5 reaches the adsorption range of the first magnetic pole 3, the second magnetic pole 5 and the first magnetic pole 3 can be automatically aligned under the adsorption action of the first magnetic pole 3, so that the butt joint of the butt joint end 4 and the guide end 1 is realized.
The first pole 3 and the second pole 5 may be permanent magnets, electromagnets or other magnetic substances. When the first magnetic pole 3 and the second magnetic pole 5 adopt permanent magnets, the polarities of the opposite ends of the first magnetic pole 3 and the second magnetic pole 5 need to be opposite, and one or two of samarium cobalt magnets, neodymium iron boron magnets, ferrite magnets, alnico magnets or iron chromium cobalt magnets can be adopted as the permanent magnets, that is, the first magnetic pole 3 and the second magnetic pole 5 can be permanent magnets made of different materials.
Compared with the prior art, medical staff need to conduct windowing operation under the guidance of image equipment through self experience. In this embodiment, the automatic butt joint of the guide tube 4 and the guide end 1 is realized by using the automatic alignment of the second magnetic pole 5 and the first magnetic pole 3, so that the windowing mechanism can accurately and stably perform the windowing function on the tissue 2 to be operated after passing through the butt joint end 4, which is not only beneficial to reducing the windowing difficulty and improving the windowing precision and windowing speed, but also can reduce the requirements of windowing operation on surgical instruments, self experience of medical staff and image equipment. In addition, because the adsorption effect of the first magnetic pole 3 and the second magnetic pole 5 is utilized in the butt joint process, the windowing mechanism can not deviate in the windowing process, and the position accuracy of windowing and the windowing stability of the windowing mechanism are further improved. Of course, if the stitching operation needs to be performed in other embodiments, only the windowing mechanism needs to be replaced by the stitching mechanism, and the usage method of the stitching mechanism is the same as that of the windowing mechanism, which is not described herein.
Further, as shown in fig. 2, in this embodiment, the first magnetic pole 3 is in a bowl-shaped structure, and the first magnetic pole 3 is configured in a bowl-shaped structure, so that the window opening mechanism can be guided to pass through the path of the tissue 2 to be operated by using the cavity of the bowl-shaped structure, which is beneficial to improving the window opening precision. Further, the first magnetic pole 3 may further be provided with a guiding structure 31, which can guide the windowing mechanism passing through the tissue 2 to be operated, so as to provide a larger operation space for the windowing mechanism, and facilitate the extraction of the guiding end 1. The guide structure 31 may be a guide groove or a guide hole provided on the first magnetic pole 3, and specifically, the guide groove may be a U-shaped groove as shown in fig. 2 or a circular hole. Of course, in other embodiments, the guiding structure 31 may be other structures as long as the guiding function can be implemented.
The setting position of the guiding end 1 is a key factor for determining the windowing precision, as shown in fig. 2, the guiding end 1 specifically comprises a positioning bracket, one end of the positioning bracket is provided with a conveying end 11, and the other end is provided with a first magnetic pole 3. In the process of conveying the guide end 1 to the tissue 2 to be operated, the conveying end 11 of the positioning bracket is clamped by a conveying appliance, so that when the guide end 1 reaches one side of the tissue 2 to be operated, the first magnetic pole 3 is just arranged right to the tissue 2 to be operated.
Since the docking positioning device is most often used for fenestration of a stent graft, in order to place a branch stent into the branch vessel 200 at the fenestration, since the guiding end 1 is typically placed in the branch vessel 200. Since the cross-section of the blood vessel is circular, the guide end 1 is not easy to move randomly in the blood vessel in order to improve the stability of the guide end 1 in the branch blood vessel 200, and the damage to the branch blood vessel 200 in the conveying process of the guide end 1 can be reduced by arranging the positioning bracket in a sphere shape or a shuttle shape.
Further, in order that the first magnetic pole 3 can be precisely aligned with the tissue 2 to be operated while the positioning bracket is kept in a stable state, the axial direction of the first magnetic pole 3 is set along the axial direction of the positioning bracket. In order not to affect the flow of blood in the branch vessel 200, the positioning bracket is provided with a hollowed-out structure. In this embodiment, the positioning bracket is a cage-like structure consisting of an annular frame 12 and a connecting rod 13. The connection manner of the ring frame 12 and the connection rod 13 is not particularly limited as long as it can be connected in a stable sphere, cylinder or shuttle shape, and is convenient for transportation, release and recovery. Of course, in other embodiments, the guiding end 1 may be arranged in a catheter-like structure.
In order to facilitate accurate delivery of the guiding end 1 into the branch vessel 200 and to facilitate retrieval of the guiding end 1 after the completion of the windowing operation, the docking and positioning device further comprises a delivery mechanism 8. As shown in fig. 3, the conveying mechanism 8 includes a conveying pipe 81 and a conveying seat 82 which are coaxially arranged, the conveying pipe 81 and the conveying seat 82 are all in a circular pipe structure, the diameter of the conveying seat 82 is larger than that of the conveying pipe 81, and the conveying pipe 81 and the conveying seat 82 are in transitional connection through a taper pipe. The recovery wire 83 passes through the cavity on the conveying pipe 81 and the conveying seat 82 to be fixedly connected with the guide end 1, the connection mode can be bonding or bolting, and the release and recovery of the guide end 1 can be realized by pulling the recovery wire 83.
Further, in order to avoid the guide end 1 from rubbing against the vessel wall to damage the vessel wall when the guide end 1 is delivered and recovered, a receiving cavity 84 for receiving the guide end 1 is provided in the free end of the delivery tube 81. When the guide end 1 is conveyed by the conveying mechanism 8, the guide end 1 is placed in the accommodating cavity 84, and the guide end 1 can be compressed to be placed in the accommodating cavity because the positioning bracket on the guide end 1 is hollow; after the guide end 1 reaches the specific position of the branch vessel 200, the guide end 1 is pushed out of the storage cavity 84 through the recovery wire 83, and the positioning bracket is restored to the original shape so as to be supported in the branch vessel 200; after the windowing operation is completed, the guide end 1 can be recovered into the receiving cavity 84 again by pulling the recovery wire 83, and is transferred to the outside of the patient along with the conveying pipe 81.
Further, in order to avoid the blockage of the branch vessel 200 after the tissue 2 to be operated is placed in the aortic vessel 100, so that blood cannot smoothly enter the branch vessel 200, a diversion hole 85 is further provided on the delivery tube 81, and the diversion hole 85 is provided to be capable of communicating the aortic vessel 100 and the branch vessel 200. The shape of the diversion holes 85 may be circular, square or other shapes, but is not limited thereto, and the number of diversion holes 85 may be specifically set according to the specific situation, for example, may be one, two, three or more.
The abutment end 4 mainly provides a guiding function for the windowing mechanism and achieves accurate alignment with the guiding end 1. As shown in fig. 4 and 5, the butt end 4 specifically includes a catheter hub 41 and a catheter 42, the catheter hub 41 and the catheter 42 being coaxially disposed, and a first guide through hole being provided along the axial direction of the catheter hub 41 and the catheter 42. The diameter of the portion of the first guide through hole located in the catheter holder 41 is larger than the diameter of the portion of the first guide through hole located in the catheter 42, and the first guide through hole smoothly transitions at the junction of the catheter holder 41 and the catheter 42. The catheter 42 is made of a material having a certain hardness and capable of undergoing a certain deformation, and the specific material is not limited herein, and any material may be used as long as it can be used for a medical device and satisfies the above requirements.
The second magnetic pole 5 is disposed at the free end of the guide tube 42, and a second guide through hole is disposed on the second magnetic pole 5 so as not to affect the penetration of the windowing mechanism out of the butt end 4. In this embodiment, the second guide through hole and the first guide through hole are coaxially disposed and have the same diameter. The cross-sectional shape of the second magnetic pole 5 may be circular, polygonal, or other shapes, and is not particularly limited herein. Of course, in other embodiments, the diameters of the second and first guide through holes may also be different.
The fenestration mechanism is a main component for fenestration of the tissue 2 to be operated, and in this embodiment, a membrane-rupturing needle 6 is selected as the fenestration mechanism. Specifically, as shown in fig. 4 and 5, the membrane-breaking needle 6 includes a membrane-breaking needle seat 61, a membrane-breaking needle tube 62 and a membrane-breaking needle 63 which are sequentially connected, and the membrane-breaking needle 63 passes through the first guide through hole to reach the tissue 2 to be operated to perform a windowing task. In order to limit the moving distance of the membrane breaking needle 6, a limit boss can be arranged at the end part of the membrane breaking needle seat 61, the limit of the membrane breaking needle 6 is realized by the abutting connection of the limit boss and the catheter seat 41, and the situation that the moving distance of the membrane breaking needle 6 is too large to cause error injury to other tissues without windowing is avoided. Of course, in other embodiments, other devices may be used as the windowing structure, using lasers or optical fibers, etc.
The regulator 7 is mainly used to change the curvature and orientation of the end of the catheter 42 remote from the catheter hub 41, so that the position and orientation of the second magnetic pole 5 provided on the catheter 42 can be widely changed. Specifically, as shown in fig. 4, 5 and 7, the regulator 7 includes a regulator body and a traction wire 74, one end of the traction wire 74 is connected with the regulator body, and the other end of the traction wire 74 is connected with the free end of the conduit 42, and the traction wire 74 can be pulled to move by adjusting the regulator body, so that the free end of the conduit 42 is driven to bend, and the position and the orientation of the second magnetic pole 5 are changed, so that the second magnetic pole 5 moves to be within the adsorption magnetic force range of the first magnetic pole 3.
The adjuster body may drive the traction wire 74 either in a moving or rotating manner, and in order to facilitate operation and to achieve accurate control of the catheter 42 and thus fine adjustment of the position and orientation of the second magnetic pole 5, in this embodiment, the traction wire 74 is selectively driven in a rotating manner. Specifically, as shown in fig. 7, the regulator body includes a fixing base 73, a traction block 72, a knob 71, and a rear cover 75. The fixed seat 73 is of a columnar structure, the knob 71 is of a sleeve-shaped structure, the knob 71 is sleeved on the fixed seat 73, and a thread structure is arranged on the inner annular surface of the knob 71 and the outer annular surface of the fixed seat 73. The traction block 72 is arranged between the fixed seat 73 and the knob 71 and is in threaded connection with the inner annular surface of the knob 71 and the outer annular surface of the fixed seat 73, one end of the traction wire 74 is fixedly connected with the traction block 72, and the rear cover 75 is arranged at the rear end of the whole regulator body in a covering manner and is used for sealing the traction block 72. When the knob 71 is rotated, the traction block 72 can be driven to rotate around the outer ring surface on the fixed seat 73 and simultaneously move along the axial direction of the fixed seat 73, and the traction wire 74 and the traction block 72 synchronously move, so that the free end of the catheter 42 is bent. By controlling the number of rotations of knob 71, the distance of movement of pulling block 72, and thus the degree of bending of the free end of catheter 42, can be precisely controlled.
In order to improve the accuracy of movement of the pulling wire 74, a wire hole for allowing the pulling wire 74 to pass therethrough is provided in the axial direction of the tube wall of the catheter 42 as shown in fig. 6. The guide wire hole can be a through hole or a blind hole. In order to facilitate the medical staff to operate the regulator 7, the regulator 7 and the catheter seat 41 are integrally formed, and the regulator 7 is obliquely arranged relative to the catheter seat 41, so that the included angle between the axis of the regulator 7 and the axis of the catheter seat 41 is an acute angle, the operation habit of the medical staff is compounded, and the force is convenient to use when the knob 71 is rotated.
Taking an example of opening a hole in a covered stent positioned in an aortic blood vessel 100, as shown in fig. 8 and 9, the use method of the docking and positioning device specifically comprises the following steps: firstly, a guide end 1 is placed in a branch blood vessel 200 by using a conveying mechanism 8, the guide end 1 is positioned at one side of a covered stent, and a first magnetic pole 3 on the guide end 1 is opposite to an opening position of the covered stent; then the butt joint end 4 is transmitted into a covered stent arranged in the aortic blood vessel 100, the covered stent is positioned at the other side of the covered stent, a knob 71 on the regulator 7 is rotated, a traction block 72 is utilized to drive a traction wire 74, the free end of the catheter 42 is bent, so that the free end reaches the adsorption range of the first magnetic pole 3, and the free end is aligned with the first magnetic pole 3 under the adsorption action of the first magnetic pole 3; finally, the membrane breaking needle 6 passes through the butt joint end 4, the windowing operation is carried out at the position of the membrane covering stent, which needs to be perforated, and after the windowing operation is finished, the branch stent can be arranged in the branch vessel 200 from the windowing position.
It is to be understood that the above examples of the present invention are provided for clarity of illustration only and are not limiting of the embodiments of the present invention. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.
Claims (12)
1. A docking and positioning device, comprising:
The guiding end (1) is used for guiding the direction at one side of the tissue (2) to be operated, and a first magnetic pole (3) is arranged at one end, close to the tissue (2) to be operated, of the guiding end (1);
The butt joint end (4) is used for butt joint on the other side of the tissue (2) to be operated, and a second magnetic pole (5) is arranged at one end close to the tissue (2) to be operated;
an adjuster (7) for adjusting the position and/or angle of the second pole (5) relative to the first pole (3);
The second magnetic pole (5) and the first magnetic pole (3) can mutually attract to butt the butt joint end (4) with the guide end (1) after approaching;
The guide end (1) comprises a positioning bracket, and the first magnetic pole (3) is arranged on the positioning bracket;
the positioning bracket is a cage-shaped structure consisting of an annular frame (12) and a connecting rod (13);
The conveying mechanism (8), the conveying mechanism (8) comprises a conveying pipe (81) and a conveying seat (82) which are coaxially arranged, the conveying pipe (81) and the conveying seat (82) are of circular pipe-shaped structures, the diameter of the conveying seat (82) is larger than that of the conveying pipe (81), and the conveying pipe (81) and the conveying seat (82) are in transitional connection through a taper pipe; a receiving cavity (84) for receiving the guide end (1) is also arranged in the free end of the conveying pipe (81); a diversion hole (85) is also arranged on the conveying pipe (81);
The butt joint end (4) comprises a catheter seat (41) and a catheter (42) which are connected with each other, and a first guide through hole is formed along the axial direction of the catheter seat (41) and the catheter (42);
The regulator (7) comprises a regulator body and a traction wire (74), one end of the traction wire (74) is connected with the regulator body, and the other end of the traction wire is connected with the free end of the catheter (42);
The adjuster body comprises a fixed seat (73), a traction block (72) and a knob (71), wherein the knob (71) is sleeved outside the fixed seat (73), the traction block (72) is located between the knob (71) and the fixed seat (73) and is respectively in threaded connection with the knob (71) and the fixed seat (73), and one end of a traction wire (74) is connected with the traction block (72).
2. A docking station as defined in claim 1, wherein,
The second magnetic pole (5) is arranged at the free end of the guide pipe (42), and a second guide through hole is formed in the second magnetic pole (5) and communicated with the first guide through hole.
3. A docking station as defined in claim 1, wherein,
A guide wire hole allowing the traction wire (74) to pass through is arranged on the pipe wall of the catheter (42).
4. A docking station as defined in claim 1, wherein,
The regulator (7) is integrally formed with the catheter hub (41).
5. A docking station as defined in claim 4, wherein,
The included angle between the axis of the regulator (7) and the axis of the catheter seat (41) is an acute angle.
6. A docking station as defined in claim 1, wherein,
The first magnetic pole (3) and the second magnetic pole (5) are permanent magnets, and the polarities of the opposite ends of the first magnetic pole and the second magnetic pole are opposite.
7. A docking station as defined in claim 6, wherein,
The permanent magnet is a samarium cobalt magnet, a neodymium iron boron magnet, a ferrite magnet, an alnico magnet or an iron chromium cobalt magnet.
8. A docking station as defined in claim 1, wherein,
The first magnetic pole (3) and the second magnetic pole (5) are electromagnets.
9. The docking station of any one of claims 1-8, further comprising:
And the operation mechanism can pass through the butt joint end (4) to perform operation on the tissue (2) to be operated.
10. A docking station as defined in claim 9, wherein,
The operation mechanism is a windowing mechanism or a stitching mechanism.
11. A docking station as defined in claim 10, wherein,
The windowing mechanism is a membrane breaking needle (6) or an optical fiber.
12. A docking station as defined in claim 10, wherein,
The first magnetic pole (3) is provided with a guide structure (31), and the windowing mechanism can enter the guide structure (31) after windowing on the tissue (2) to be operated.
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| CN112244949B (en) * | 2020-09-10 | 2022-04-12 | 杭州德柯医疗科技有限公司 | Intervention instrument capable of adjusting bending in multiple directions |
| CN112245064B (en) * | 2020-11-23 | 2025-02-14 | 宁波华仁医疗科技有限公司 | A membrane rupture balloon catheter and its use method |
| CN118830959A (en) * | 2023-04-23 | 2024-10-25 | 先健科技(深圳)有限公司 | Guiding device and membrane rupture system |
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| CN106333766A (en) * | 2016-08-16 | 2017-01-18 | 董红霖 | Positioning device for in-situ windowing of endovascular stent-graft |
| CN209091565U (en) * | 2018-09-04 | 2019-07-12 | 苏州茵络医疗器械有限公司 | A docking positioning device |
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| US7691095B2 (en) * | 2004-12-28 | 2010-04-06 | St. Jude Medical, Atrial Fibrillation Division, Inc. | Bi-directional steerable catheter control handle |
| GB0721459D0 (en) * | 2007-11-01 | 2007-12-12 | Vascutek Ltd | Apparatus and method |
| CN103830000B (en) * | 2012-11-23 | 2016-03-02 | 四川锦江电子科技有限公司 | Controllable bending open irrigated ablation catheters |
| CN103690222A (en) * | 2013-12-11 | 2014-04-02 | 上海理工大学 | Laparoscope operating forceps |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106333766A (en) * | 2016-08-16 | 2017-01-18 | 董红霖 | Positioning device for in-situ windowing of endovascular stent-graft |
| CN209091565U (en) * | 2018-09-04 | 2019-07-12 | 苏州茵络医疗器械有限公司 | A docking positioning device |
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