CN113456154A - Implant conveying guide wire - Google Patents
Implant conveying guide wire Download PDFInfo
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- CN113456154A CN113456154A CN202110803000.5A CN202110803000A CN113456154A CN 113456154 A CN113456154 A CN 113456154A CN 202110803000 A CN202110803000 A CN 202110803000A CN 113456154 A CN113456154 A CN 113456154A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
- A61B17/12022—Occluding by internal devices, e.g. balloons or releasable wires
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
- A61B17/12022—Occluding by internal devices, e.g. balloons or releasable wires
- A61B2017/1205—Introduction devices
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
- A61B17/12022—Occluding by internal devices, e.g. balloons or releasable wires
- A61B2017/1205—Introduction devices
- A61B2017/12054—Details concerning the detachment of the occluding device from the introduction device
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
- A61B17/12022—Occluding by internal devices, e.g. balloons or releasable wires
- A61B2017/1205—Introduction devices
- A61B2017/12054—Details concerning the detachment of the occluding device from the introduction device
- A61B2017/12086—Details concerning the detachment of the occluding device from the introduction device magnetically detachable
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- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
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Abstract
The invention provides an implant delivery guide wire, which comprises: the end part of the delivery guide wire body is provided with a clamping component matched with the implanted part; wherein, the clamping component is used for fixing or releasing the implant component in a controllable way. The beneficial effect of its technical scheme lies in, through electromagnetic effect or mechanical control to the implanted part, its reliability that can effectual improvement is connected and the security of transportation process, prevents that the implant from accidentally breaking away. On the one hand, the clamping component and the implanted component can be instantaneously disengaged, the disengagement time is short, and the disengagement process is simple and controllable. On the other hand, the operation between block subassembly and the implantation part is more convenient, does not have the desorption product, shortens operation time, reduces the thrombus and produces the probability, reduces the harm to blood, blood vessel and patient.
Description
Technical Field
The invention relates to the technical field of medical equipment, in particular to an implant delivery guide wire.
Background
In the current interventional medical apparatus, the releasing modes of the spring ring, the occluder and other implants and the conveying device thereof can be mainly divided into mechanical releasing, chemical releasing and electrical releasing including thermal melting releasing, electromagnetic releasing and the like.
The mechanical release method is commonly used, and generally, the connection between the conveying device and the implant is realized through a special mechanical structure design, and the conveying device and the implant are released through pulling, pushing, twisting and other methods after the implant reaches a target part, so that the separation of the conveying device and the implant is realized. The mechanical releasing mode has the characteristics of timely releasing, high reliability and the like. Various mechanical release structures for implants such as coils are disclosed, such as grant publication No. CN211131220U, application publication No. CN106377292, and application publication No. CN 110859692A.
Chemical detachment is generally achieved by bonding or blocking a particular mechanical structure at the junction of the implant and the delivery device using a special material, which is exposed to blood when the implant reaches the target site and causes the special material to neutralize, dissolve or otherwise chemically react with the blood or the substance injected through the delivery device, thereby effecting detachment of the implant from the delivery device, as disclosed in the grant publication No. CN 204233177U.
The electrolysis is generally performed by a current loop built in the conveying device or a current loop formed between an electrode entering a human body and an electrode arranged outside the human body, the junction of the implant and the conveying device is fused by utilizing the thermal effect or electrochemical reaction of current, and then the implant and the conveying device are separated, and metal or high polymer materials which are sensitive to the thermal effect of the current or easy to generate the electrochemical reaction are usually arranged at the junction.
The above scheme presents the following risks:
the mechanical release generally has special requirements on the structure of the proximal end of the implant, the universality is poor, and the special structure causes the proximal end of the implant to be easy to generate thrombus or damage blood vessels, thereby bringing unpredictable risks to patients.
The releasing process of the chemical releasing is uncontrollable, and due to the instability of materials, the releasing device has high requirements on storage and transportation, the state in clinical use is difficult to judge, and operation failure or unpredictable risks can be caused.
The electrolysis is realized through the heat effect of current or electrochemical reaction, so that a heat force field is easily generated around the connection part to further cause blood to coagulate to form thrombus or generate adverse effect on blood components and vascular structures; debris generated by the hot melting or electrochemical reaction of materials at the joint in the releasing process can drift to a remote place along with blood to cause the blockage of blood vessels; meanwhile, the electrolytic dissociation is long and unstable, so that the clinical use process is inconvenient for doctors to judge and operate, and the operation time is long, so that unsmooth blood circulation and insufficient blood supply can be caused, and complications can be caused to patients.
Disclosure of Invention
In response to the above-described problems with the prior art for delivering implants, an implant delivery guidewire is now provided that is directed to achieving improved detachment efficiency and reduced risk of detachment.
The specific technical scheme is as follows:
an implant delivery guidewire, comprising:
the end part of the delivery guide wire body is provided with a clamping component matched with the groove of the implantation part;
wherein, the clamping component is used for fixing or releasing the implant component in a controllable way.
Preferably, the engaging member includes:
a tubular cavity having an opening at one end;
the N balls are arranged on the inner side wall of the tubular cavity;
a stopper disposed within the tubular cavity;
the implant component is provided with a groove at a position close to the end, and the ball is matched with the stopper to fix the ball and the groove or separate the implant component from the ball.
Preferably, the stopper includes:
the elastic element is used for matching the ball to enable the ball to abut against the inner side wall of the tubular cavity, or matching the ball to move to enable the implant component to be separated from the ball.
Preferably, the engaging assembly further comprises:
the electromagnetic core body is arranged at one end of the elastic element far away from the ball;
and the electromagnetic coil is arranged on the surface of the electromagnetic core body in a surrounding manner, and a connecting lead of the electromagnetic coil passes through the conveying guide wire body and extends out of the end part of the conveying guide wire body.
Preferably, the engaging assembly further comprises:
and one end of the traction wire is connected with each ball, and the other end of the traction wire extends out of the end part of the conveying guide wire body.
Preferably, a through hole is formed in the contact part of the limiting stopper and the rolling guide body, the through hole is used for leading out the traction wire, and the led-out traction wire is converged into a strand through a wire splitter and extends out of the end part of the conveying guide wire body.
Preferably, the engaging assembly further comprises:
the electromagnetic core body is arranged at one end of the elastic element far away from the ball;
the electromagnetic coil is arranged on the surface of the electromagnetic core body in a surrounding manner, and a connecting lead of the electromagnetic coil penetrates through the conveying guide wire body and extends out of the end part of the conveying guide wire body;
and one end of the traction wire is connected with each ball, and the other end of the traction wire extends out of the end part of the conveying guide wire body.
Preferably, a through hole is formed in the contact part of the limiting stopper and the rolling guide body, the through hole is used for leading out the traction wire, and the led-out traction wire is converged into a strand through a wire splitter and extends out of the end part of the conveying guide wire body.
Preferably, a central channel and at least two bypass pipelines are arranged in the delivery guide wire body;
the lead wires gathered into a strand extend out of the central channel; or
The connecting lead extends out of the bypass pipeline and is connected with an external power supply.
Preferably, the ball is made of a metal material.
The technical scheme has the following advantages or beneficial effects:
through the direct cooperation of implantation part, conveying seal wire body and block subassembly, specifically, through electromagnetic effect or mechanical control to implantation part, its reliability that can effectual improvement is connected and transportation process's security prevents that the implant accident from breaking away.
On the one hand, the clamping component and the implanted component can be instantaneously disengaged, the disengagement time is short, and the disengagement process is simple and controllable.
On the other hand, the operation between block subassembly and the implantation part is more convenient, does not have the desorption product, shortens operation time, reduces the thrombus and produces the probability, reduces the harm to blood, blood vessel and patient.
Drawings
Embodiments of the present invention will now be described more fully hereinafter with reference to the accompanying drawings. The drawings are, however, to be regarded as illustrative and explanatory only and are not restrictive of the scope of the invention.
FIG. 1 is a schematic view of the overall structure of a first embodiment of an implant delivery guidewire according to the present invention;
FIG. 2 is a schematic view of the internal structure of a first embodiment of an implant delivery guidewire according to the invention;
FIG. 3 is a schematic view of a locking implant component according to a first embodiment of the implant delivery guidewire of the present invention;
FIG. 4 is a schematic view of a release implant component according to a first embodiment of the guidewire for delivering an implant of the present invention.
FIG. 5 is a schematic view of a second embodiment of an implant delivery guidewire of the present invention without implanted components.
FIG. 6 is a schematic view of a locking implant component of a second embodiment of an implant delivery guidewire according to the invention;
FIG. 7 is a schematic view of a second embodiment of an implant delivery guidewire according to the present invention, showing the structure of the delivery implant.
FIG. 8 is a schematic view of the overall structure of an embodiment of an implant delivery guidewire of the present invention without implanted components.
Fig. 9 is a cross-sectional view taken along a-a in fig. 8.
Reference numbers indicate with respect to the embodiment:
1. an implant component; 2. a delivery guidewire body; 3. clamping the assembly; 11. a groove; 31. a tubular cavity; 32. a ball bearing; 33. a stopper; 34. an electromagnetic core; 35. an electromagnetic coil; 311. an opening; 331. an elastic element; 351. connecting a lead;
reference numbers for embodiment two indicate:
1. an implant component; 2. a delivery guidewire body; 3. clamping the assembly; 11. a groove; 21. a cavity; 31. a tubular cavity; 32. a ball bearing; 33. a stopper; 34. a pull wire; 35. a wire divider; 311. an opening; 331. an elastic element; 332. a through hole; 351. a through hole;
reference numbers for embodiment three indicate:
1. an implant component; 2. a delivery guidewire body; 3. clamping the assembly; 11. a groove; 21. a central channel; 31. a tubular cavity; 32. a ball bearing; 33. a stopper; 34. an electromagnetic core; 35. an electromagnetic coil; 36. a pull wire; 37. a wire divider; 311. an opening; 331. an elastic element; 351. connecting a lead; 332. a through hole; 371. a through hole.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
The invention is further described with reference to the following drawings and specific examples, which are not intended to be limiting.
The present invention comprises, in one aspect, an implant delivery guidewire.
An embodiment of an implant delivery guidewire, comprising:
the end part of the delivery guide wire body is provided with a clamping component matched with the groove of the implantation part;
wherein, the clamping component is used for fixing or releasing the implant component in a controllable way.
The clamping component comprises:
a tubular cavity having an opening at one end;
the N balls are arranged on the inner side wall of the tubular cavity;
a stopper disposed within the tubular cavity;
the implant component is provided with a groove at a position close to the end, and the ball is matched with the stopper to fix the ball and the groove or separate the implant component from the ball.
Preferably, the stopper includes:
the elastic element is used for matching the ball to enable the ball to abut against the inner side wall of the tubular cavity or matching the ball to move to enable the implanted part to be separated from the ball.
Preferably, the snap assembly further comprises:
the electromagnetic core body is far away from the ball and arranged at one end of the elastic element;
and the electromagnetic coil is arranged on the surface of the electromagnetic core body in a surrounding manner, and a connecting lead of the electromagnetic coil passes through the conveying guide wire body and extends out of the end part of the conveying guide wire body.
Preferably, the snap assembly further comprises:
and one end of the traction wire is connected with each ball, and the other end of the traction wire extends out of the end part of the conveying guide wire body.
Preferably, a through hole is formed in the contact part of the limiting stopper and the roller, the through hole is used for leading out a traction wire, and the led-out traction wire is converged into a strand through a wire splitter and extends out of the end part of the conveying guide wire body.
Preferably, the snap assembly further comprises:
the electromagnetic core body is far away from the ball and arranged at one end of the elastic element;
the electromagnetic coil is arranged on the surface of the electromagnetic core body in a surrounding manner, and a connecting lead of the electromagnetic coil passes through the conveying guide wire body and extends out of the end part of the conveying guide wire body;
and one end of the traction wire is connected with each ball, and the other end of the traction wire extends out of the end part of the conveying guide wire body.
Preferably, a through hole is formed in the contact part of the limiting stopper and the roller, the through hole is used for leading out a traction wire, and the led-out traction wire is converged into a strand through a wire splitter and extends out of the end part of the conveying guide wire body.
Preferably, a central channel and at least two bypass pipelines are arranged in the delivery guide wire body;
the lead wires gathered into one strand extend out of the central channel; or
The connecting lead extends out of the bypass pipeline and is connected with an external power supply.
Preferably, the balls are made of a metal material.
The first embodiment is as follows:
1-4, an embodiment of an implant delivery guidewire, comprising:
an implant member 1 provided with a recess 11 near an end position, wherein the implant member 1, an implant body, the recess 11 is provided near the end position of the implant body, the recess 11
The end part of the conveying guide wire body 2 is provided with a clamping component 3 matched with the groove 11;
wherein, the clamping component 3 is used for controllably fixing or releasing the implant component 1.
Further, the engaging member 3 includes:
the tubular cavity 31 is provided with an opening 311 at one end of the tubular cavity 31, wherein the end of the tubular cavity 31 provided with the opening 311 is in a conical structure, the opening 311 is arranged at the top of the conical structure, and the fixation principle is that axial pressure is converted into radial pressure to act on the surrounding groove 11 at the proximal end of the implant component 1, so that the proximal end of the implant component 1 is connected and fixed with the delivery guide wire.
A stopper 33 disposed in the tubular cavity 31;
wherein the ball 32 cooperates with the stopper 33 to form a fixation between the ball 32 and the groove 11 or to disengage the implant member 1 from the ball 32.
Further, the stopper 33 includes:
the elastic element 331, preferably a spring, is used to cooperate with the ball 32 to press against the inner side wall of the tubular cavity 31 near the opening 311, or cooperate with the ball 32 to move to disengage the implant member 1 from the ball 32.
Further, the engaging member 3 further includes:
an electromagnetic core 34 disposed at one end of the elastic element 331 away from the ball 32;
and an electromagnetic coil 35 surrounding the surface of the electromagnetic core 34, wherein the connecting wire 351 of the electromagnetic coil 35 passes through the delivery guide wire body 2 and extends out of the end of the delivery guide wire body 2.
In the above technical solution, the working principle of the implant delivery guide wire is explained, as shown in fig. 3 to 4:
when the implant member 1 is assembled, the electromagnetic coil is energized through the connecting wire 351, and the electromagnetic core 34 is magnetized by the energized electromagnetic coil, and at this time, the electromagnetic core 34 is brought close by the magnetically attracting balls 32, the suction force overcomes the elastic damping of the elastic element 331, the elastic element 331 is forced to contract, and since the ball 32 is away from the opening 311, the implant member 1 can penetrate from the opening 311, and enters the tubular cavity 31, so that the groove 11 of the implant component 1 corresponds to the side position of the ball 32, after the connecting lead 351 is powered off, the magnetic core 34 is magnetically lost, and the elastic member 331 is restored from the previous contracted state to the expanded state, the stopper 33 pushes the ball 32 to move toward the opening 311 during the extension process, and when the ball 32 is engaged with the groove 11 of the implant member 1 during the movement process and the ball 32 is interfered with the inner sidewall of the opening 311, the fixation of the implant member 1 is formed. It should be noted that, since the periphery of the groove 11 is filled with the ball 32, the implanted component 1 cannot be disengaged from the limit of the ball 32 under the action of other external forces, if there is no related unlocking operation.
After the implantation part 1 reaches the predetermined position of the blood vessel, the electromagnetic coil is electrified through the connecting wire 351, the electrified electromagnetic coil enables the electromagnetic core body 34 to have magnetism, the electromagnetic core body 34 is close to the magnetic attraction ball 32 at the moment, the attraction force overcomes the elastic damping of the elastic element 331, the elastic element 331 is forced to contract, the ball 32 is far away from the opening 311 at the moment, the distance between the ball 32 is increased, and then the implantation part 1 is separated from the groove 11, and the limitation of the ball 32 on the implantation part 1 is removed, so that the separation operation can be completed.
After the implant component is released, the power supply to the end of the connecting wire 351 is cut off, the current in the electromagnetic coil 35 disappears, the magnetism of the electromagnetic core 34 disappears, and under the action of the elastic element 331, the ball 32 is pushed back to the tubular cavity 31 by the stopper 33 to be close to the opening 311 and to be collided with the inner side of the opening 311.
Therefore, the implant delivery guide wire has the advantages that the connection reliability and the safety of the delivery process can be effectively improved, the implant is prevented from being accidentally released, the release time is short, and the release process is simple and controllable. The operation is more convenient, no decomposition product exists, the operation time is shortened, the probability of thrombus generation is reduced, and the damage to blood, blood vessels and patients is reduced.
Example two:
as shown in fig. 5-7, an embodiment of an implant delivery guidewire includes, among other things:
the implant component 1 is provided with a groove 11 near the end part;
the end part of the conveying guide wire body 2 is provided with a clamping component 3 matched with the groove 11;
wherein, the clamping component 3 is used for controllably fixing or releasing the implant component 1.
Further, the engaging member 3 includes:
the tubular cavity 31 is provided with an opening 311 at one end of the tubular cavity 31, wherein the end of the tubular cavity 31 provided with the opening 311 is in a conical structure, the opening 311 is arranged at the top of the conical structure, and the fixation principle is that axial pressure is converted into radial pressure to act on the surrounding groove 11 at the proximal end of the implant component 1, so that the proximal end of the implant component 1 is connected and fixed with the delivery guide wire.
The stopper 33 is disposed in the tubular cavity 31, the stopper 33 is in a disc shape, the material of the stopper can be a polymer material suitable for interventional medical devices, the center position of the stopper is provided with a groove 11, through holes 332 are uniformly distributed around the groove 11, the number of the through holes 332 is the same as that of the balls 32, the through holes 332 are distributed along the radial direction of the disc, and the through holes and the balls 32 are in one-to-one correspondence.
Wherein the ball 32 cooperates with the stopper 33 to form a fixation between the ball 32 and the groove 11 or to disengage the implant member 1 from the ball 32.
Further, the stopper 33 includes:
an elastic element 331, the elastic element 331 is adapted to cooperate with the ball 32 to abut against the inner sidewall of the tubular cavity 31, or cooperate with the ball 32 to move to disengage the implant 1 from the ball 32, the elastic element 331 is preferably a spring, and the material of the elastic element 331 may be stainless steel or other material suitable for interventional medical devices.
Further, the engaging member 3 further includes:
a traction wire 34 having one end connected to each ball 32 and the other end protruding from the end of the delivery guidewire body 2, wherein the traction wire 34 is divided into a plurality of strands, the number of which is the same as the number of the balls 32, and connected one by one thereto.
Furthermore, a through hole 332 is arranged at the contact part of the stopper 33 and the rolling guide, the through hole 332 is used for leading out the traction wire 34, the leading-out traction wire 34 is gathered into a strand through a wire divider 35 and extends out from the end part of the transmission guide wire body 2, wherein the wire divider 35 is in a disc shape and can be made of stainless steel or other materials suitable for interventional medical equipment, through holes 351 are arranged in the wire divider, the number of the through holes 351 is the same as that of the balls 32, the through holes are distributed along the radial direction of the disc, and the far end of the traction wire 34 respectively passes through the through holes 351 in the stopper 33, the through holes 351 in the elastic element 331 and the through holes 351 in the wire divider 35 and is gathered into a strand at the near end and penetrates out from the cavity 21 in the guide wire rod body.
In the above technical solution, the working principle of the implant delivery guide wire is explained, as shown in fig. 6 to 7:
when the implant component 1 is installed, the ball 32 is drawn close by the traction wire 34, the pulling force overcomes the elastic damping of the elastic element 331, the elastic element 331 is forced to contract, the implant component 1 can enter from the opening 311 and enter the tubular cavity 31 because the ball 32 is far away from the opening 311, the groove 11 of the implant component 1 corresponds to the side position of the ball 32, after the pulling force is relieved, the elastic element 331 is recovered to the stretching state from the previous contracting state, the stopper 33 pushes the ball 32 to move towards the opening 311 in the stretching process, and when the ball 32 is matched with the groove 11 of the implant component 1 in the moving process and the ball 32 is collided with the inner side wall of the opening 311, the fixation of the implant component 1 is formed. It should be noted that, since the periphery of the groove 11 is filled with the ball 32, the implanted component 1 cannot be disengaged from the limit of the ball 32 under the action of other external forces, if there is no related unlocking operation.
After the implantation part 1 reaches the predetermined position of the blood vessel, the ball 32 is drawn close by the traction wire 34, the suction force overcomes the elastic damping of the elastic element 331, the elastic element 331 is forced to contract, the distance between the ball 32 is increased and the implantation part 1 is released from the restriction of the ball 32 on the groove 11 because the ball 32 is far away from the opening 311, and thus the releasing operation can be completed.
After the implant member is completely released, the pull wire 34 is released, and the stopper 33 pushes the ball 32 back to the tubular cavity 31 near the opening 311 and forms an interference with the inside of the opening 311 under the action of the elastic element 331.
Therefore, the implant delivery guide wire has the advantages that the connection reliability and the safety of the delivery process can be effectively improved, the implant is prevented from being accidentally released, the release time is short, and the release process is simple and controllable. The operation is more convenient, no decomposition product exists, the operation time is shortened, the probability of thrombus generation is reduced, and the damage to blood, blood vessels and patients is reduced.
Example three:
as shown in fig. 8-9, an embodiment of an implant delivery guidewire includes, among other things:
the implant component 1 is provided with a groove 11 near the end part;
the end part of the conveying guide wire body 2 is provided with a clamping component 3 matched with the groove 11;
wherein, the clamping component 3 is used for controllably fixing or releasing the implant component 1.
Further, the engaging member 3 includes:
the tubular cavity 31 is provided with an opening 311 at one end of the tubular cavity 31, wherein the end of the tubular cavity 31 provided with the opening 311 is in a conical structure, the opening 311 is arranged at the top of the conical structure, and the fixation principle is that axial pressure is converted into radial pressure to act on the surrounding groove 11 at the proximal end of the implant component 1, so that the proximal end of the implant component 1 is connected and fixed with the delivery guide wire.
The stopper 33 is disposed in the tubular cavity 31, wherein the stopper 33 is in a disc shape, the material of the stopper 33 may be a polymer material suitable for interventional medical devices, a groove 11 is formed at a central position of the stopper, through holes 332 are uniformly distributed around the groove 11, the number of the through holes 332 is the same as that of the balls 32, the through holes 332 are radially distributed along the disc, and the through holes and the balls 32 are in one-to-one correspondence.
Wherein the ball 32 cooperates with the stopper 33 to form a fixation between the ball 32 and the groove 11 or to disengage the implant member 1 from the ball 32.
Further, the stopper 33 includes:
an elastic element 331, the elastic element 331 is adapted to cooperate with the ball 32 to abut against the inner sidewall of the tubular cavity 31, or cooperate with the ball 32 to move to disengage the implant 1 from the ball 32, the elastic element 331 is preferably a spring, and the material of the elastic element 331 may be stainless steel or other material suitable for interventional medical devices.
Further, the engaging member 3 further includes:
an electromagnetic core 34 disposed at one end of the elastic element 331 away from the ball 32;
an electromagnetic coil 35 which is enclosed on the surface of the electromagnetic core 34, and a connecting wire 351 of the electromagnetic coil 35 passes through the delivery guide wire body 2 and extends out of the end part of the delivery guide wire body 2;
a traction wire 36 having one end connected to each ball 32 and the other end protruding from the end of the delivery guidewire body 2, wherein the traction wire 36 is divided into a number of strands, the number of which is the same as the number of the balls 32, and connected one by one thereto.
Furthermore, a through hole 332 is arranged at the contact part of the stopper 33 and the rolling guide, the through hole 332 is used for leading out the traction wire 36, the led out traction wire 36 is converged into a strand by a wire splitter 37 and extends out from the end part of the transmission guide wire body 2, wherein the wire splitter 37 is in a disc shape, the material can be stainless steel or other materials suitable for interventional medical equipment, through holes 371 are arranged in the wire splitter, the number of the through holes 371 is the same as that of the balls 32, and the through holes are distributed along the radial direction of the disc, the far end of the traction wire 36 respectively passes through the through holes 371 in the stopper 33, the elastic element 331 and the through holes 371 in the wire splitter 37, and is converged into a strand at the near end and penetrates out from the cavity in the guide wire rod body.
Further, a central channel 21 and at least two bypass pipelines are arranged in the delivery guide wire body 2;
the lead wires gathered into one strand extend out of the central channel 21; or
The connection lead 351 extends from the bypass conduit to be connected to an external power source.
Further, the balls 32 are made of a metal material.
According to the technical scheme, the device is suitable for two modes of electromagnetic release and mechanical release, the release safety can be improved, and the risk that the delivery guide wire and the implant cannot be released in the clinical use process is further reduced.
It should be noted that, the embodiment using the electromagnetic release implant component 1 is described as a part of the examples, and is not described herein again.
The embodiment using the mechanical release implant 1 is described in the second embodiment, and will not be described in detail here.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention.
Claims (10)
1. An implant delivery guidewire, comprising:
the end part of the delivery guide wire body is provided with a clamping component matched with the groove of the implantation part;
wherein, the clamping component is used for fixing or releasing the implant component in a controllable way.
2. The implant delivery guidewire of claim 1, wherein the snap assembly comprises:
a tubular cavity having an opening at one end;
the N balls are arranged on the inner side wall of the tubular cavity;
a stopper disposed within the tubular cavity;
the implant component is provided with a groove at a position close to the end, and the ball is matched with the stopper to fix the ball and the groove or separate the implant component from the ball.
3. The implant delivery guidewire of claim 2, wherein the stop comprises:
the elastic element is used for matching the ball to enable the ball to abut against the inner side wall of the tubular cavity close to the opening or matching the ball to move to enable the implant component to be separated from the ball.
4. The implant delivery guidewire of claim 3, wherein the snap assembly further comprises:
the electromagnetic core body is arranged at one end of the elastic element far away from the ball;
and the electromagnetic coil is arranged on the surface of the electromagnetic core body in a surrounding manner, and a connecting lead of the electromagnetic coil passes through the conveying guide wire body and extends out of the end part of the conveying guide wire body.
5. The implant delivery guidewire of claim 3, wherein the snap assembly further comprises:
and one end of the traction wire is connected with each ball, and the other end of the traction wire extends out of the end part of the conveying guide wire body.
6. The implant delivery guidewire of claim 5, wherein the stop and roller-in-contact portion is provided with a through-hole for the exit of the pull wire, the exit pull wire being gathered by a shunt into a strand extending from the end of the delivery guidewire body.
7. The implant delivery guidewire of claim 3, wherein the snap assembly further comprises:
the electromagnetic core body is arranged at one end of the elastic element far away from the ball;
the electromagnetic coil is arranged on the surface of the electromagnetic core body in a surrounding manner, and a connecting lead of the electromagnetic coil penetrates through the conveying guide wire body and extends out of the end part of the conveying guide wire body;
and one end of the traction wire is connected with each ball, and the other end of the traction wire extends out of the end part of the conveying guide wire body.
8. The implant delivery guidewire of claim 7, wherein the stop and roller-in-contact portion is provided with a through-hole for the exit of the pull wire, the exit pull wire being gathered by a shunt into a strand extending from the end of the delivery guidewire body.
9. The implant delivery guidewire of claim 7 or 8, wherein the delivery guidewire body has a central passage and at least two bypass conduits formed therein;
the lead wires gathered into a strand extend out of the central channel; or
The connecting lead extends out of the bypass pipeline and is connected with an external power supply.
10. The implant delivery guidewire of any one of claims 1-2, wherein the ball is made of a metallic material.
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