CN115068039A - Plug spring ring mechanism - Google Patents

Plug spring ring mechanism Download PDF

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Publication number
CN115068039A
CN115068039A CN202210876264.8A CN202210876264A CN115068039A CN 115068039 A CN115068039 A CN 115068039A CN 202210876264 A CN202210876264 A CN 202210876264A CN 115068039 A CN115068039 A CN 115068039A
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CN
China
Prior art keywords
push
clamping
rod
pull rod
arms
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CN202210876264.8A
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Chinese (zh)
Inventor
郭力友
常俊
夏洁
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Suzhou Zhongtian Medical Device Technology Co ltd
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Suzhou Zhongtian Medical Device Technology Co ltd
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Priority to CN202210876264.8A priority Critical patent/CN115068039A/en
Publication of CN115068039A publication Critical patent/CN115068039A/en
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/12Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
    • A61B17/12022Occluding by internal devices, e.g. balloons or releasable wires
    • A61B17/12099Occluding by internal devices, e.g. balloons or releasable wires characterised by the location of the occluder
    • A61B17/12109Occluding by internal devices, e.g. balloons or releasable wires characterised by the location of the occluder in a blood vessel
    • A61B17/12113Occluding by internal devices, e.g. balloons or releasable wires characterised by the location of the occluder in a blood vessel within an aneurysm
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/12Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
    • A61B17/12022Occluding by internal devices, e.g. balloons or releasable wires
    • A61B17/12131Occluding by internal devices, e.g. balloons or releasable wires characterised by the type of occluding device
    • A61B17/1214Coils or wires
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/12Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
    • A61B17/12022Occluding by internal devices, e.g. balloons or releasable wires
    • A61B17/12131Occluding by internal devices, e.g. balloons or releasable wires characterised by the type of occluding device
    • A61B17/1214Coils or wires
    • A61B17/1215Coils or wires comprising additional materials, e.g. thrombogenic, having filaments, having fibers, being coated
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/12Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
    • A61B17/12022Occluding by internal devices, e.g. balloons or releasable wires
    • A61B2017/1205Introduction devices
    • A61B2017/12054Details concerning the detachment of the occluding device from the introduction device

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  • Health & Medical Sciences (AREA)
  • Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Molecular Biology (AREA)
  • Vascular Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Reproductive Health (AREA)
  • Medical Informatics (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Neurosurgery (AREA)
  • Surgical Instruments (AREA)

Abstract

The invention relates to the technical field of medical instruments and discloses a spring ring mechanism for embolism. The embolic coil mechanism includes a coil and a release assembly. The near end of the spring ring is connected with a rod body, and the near end of the rod body is connected with a protruding head; the release assembly comprises a pushing pipe and a clamping piece, the clamping piece comprises at least two clamping arms which are arranged along the circumferential direction of the pushing pipe, the near ends of the clamping arms are connected, the far ends of the clamping arms are connected with a ball, and the clamping piece has a clamping state located in the pushing pipe and a release state located outside the pushing pipe; when the holder is in the clamping state, the distal ends of at least two clamping arms are close to each other, and the spheroid all with the lateral wall butt of the body of rod in order to press from both sides the body of rod, the protrusion head is located between the clamping arm and the distal end of protrusion head can contradict with the spheroid, when the holder is in the disengagement state, the distal end of clamping arm is kept away from each other to release protrusion head and the body of rod. The invention realizes the mechanical release of the spring ring, prevents the spring ring from shifting, and ensures the treatment effect and the safety of the operation.

Description

Plug spring ring mechanism
Technical Field
The invention relates to the technical field of medical instruments, in particular to a spring ring mechanism for embolism.
Background
In the prior art, aneurysms are commonly treated by means of implantable coil embolization therapy. At present, the mainstream spring ring release modes mainly comprise electrolytic release, hydrolytic release and mechanical release.
The mode of electrolysis is as follows: the portion of the coil connected to the guidewire is broken by electrolysis, allowing the coil to be released and left in the aneurysm. The coil and the guide wire are generally connected by welding, but the welding part is not uniform, so that the electrolytic detachment time is uncontrollable, generally ranging from tens of seconds to minutes, and the long detachment time can bring additional risks to the operation. The hydrolysis mode is as follows: the release of the spring ring and the delivery guide wire is realized by injecting aqueous solution into the delivery catheter, and the release mode has poor stability and lower controllability. The mechanical release mode is as follows: after the spring ring is pushed in place by the pushing rod, the mechanical structure is in contact with a padlock or a limiting structure between the pushing rod and the spring ring, so that the purpose of releasing the spring ring is achieved.
Most of the existing mechanical releasing structures comprise a pushing pipe and a limiting wire, wherein a pipe wall at the far end of the pushing pipe is provided with an opening, or a pipe at the far end of the pushing pipe is internally provided with a circular ring step. The spring coil near-end has spherical bulge, and the bulge is located the inside of propelling movement pipe distal end, and spacing silk is located the propelling movement intraductal and extends the propelling movement pipe distal end, and the spherical bulge of spring coil near-end can be followed and is liberated in the propelling movement pipe after removing spacing silk. However, before the limit wire is removed in actual operation, the spring ring reaches the aneurysm, and when the limit wire is removed, the spherical convex part on the spring ring is acted by force, so that the spring ring can be displaced, and the treatment effect is influenced. And after the limiting wire is removed, the protruding part of the spring ring is released, but the spring ring is still positioned in the pushing tube, and the spring ring is still displaced with a certain probability in the process of removing the pushing tube, so that additional risks are brought to the operation, and the safety of the operation is reduced.
Based on this, there is a need for an embolic coil mechanism that solves the above mentioned problems.
Disclosure of Invention
The invention aims to provide a spring ring mechanism for embolization, which is used for mechanically releasing a spring ring, ensuring that the spring ring can be completely separated from a tube body after being released, preventing the spring ring in an aneurysm from shifting, avoiding the spring ring from being released to a wrong position, ensuring the treatment effect, reducing the operation risk and ensuring the safety of the operation.
In order to achieve the purpose, the invention adopts the following technical scheme:
an embolic coil mechanism comprising:
the spring ring is connected with the rod body at the near end, and the protruding head is connected with the near end of the rod body;
the release assembly comprises a pushing pipe and a clamping piece, the clamping piece comprises at least two clamping arms, the at least two clamping arms are arranged along the circumferential direction of the pushing pipe, the near ends of all the clamping arms are connected with each other, the far end of each clamping arm is connected with at least two spheres, and the clamping piece has a clamping state located in the pushing pipe and a release state located outside the pushing pipe;
the holder is configured to be in during the clamping state, at least two the distal end of pressing from both sides tight arm is close to each other, and all the spheroid homoenergetic with the lateral wall butt of the body of rod is followed the circumference of the body of rod is arranged, with the clamp tightly the body of rod, the protrusion head is located at least two between the tight arm of clamp just the distal end of protrusion head can with at least one the spheroid is contradicted, the holder is configured to be in during the disengagement state, at least two the distal end of pressing from both sides tight arm is kept away from each other, in order to release the protrusion head with the body of rod.
As an alternative solution to the embolic coil mechanism, the detachment assembly further includes a push-pull rod, the proximal ends of the at least two clamping arms are connected to the distal end of the push-pull rod, and the push-pull rod is disposed in the push pipe and can move along the axial direction of the push pipe relative to the push pipe, so as to switch the clamping member between the clamping state and the detachment state.
As an optional technical solution of the embolic coil mechanism, the push-pull rod and the push pipe are coaxially disposed, the clamping member includes two clamping arms respectively disposed at two ends of the push-pull rod along a first direction, each clamping arm includes two branch arms arranged along a second direction, proximal ends of the branch arms are connected to the push-pull rod, a distal end of each branch arm is correspondingly connected to one of the spheres, the first direction and the second direction are perpendicular to an axial direction of the push-pull rod, and the first direction is perpendicular to the second direction.
As an alternative to the embolic coil mechanism, the branched arms comprise an elastic connection section and an inclined section, the proximal end of the elastic connection section is connected to the push-pull rod, the inclined section is connected to the distal end of the elastic connection section at an angle, the distal end of the inclined section is inclined toward the axis of the push-pull rod and connected to the sphere, the clamping member is configured such that when in the disengaged state, the distal end of the elastic connection section is inclined away from the axis of the push-pull rod, and when in the clamped state, the distal ends of the elastic connection section are close to each other.
As an optional technical scheme of the embolic coil mechanism, the clamping member further includes a connecting portion, the connecting portion includes two connecting plates perpendicular to the second direction, the two connecting plates are arranged along the second direction and are in fit connection, a proximal end of the connecting plate is connected to the push-pull rod, two ends of a distal end face of the connecting plate along the first direction are both connected with one of the branch arms, and the two branch arms located on the same side of the two connecting plates form one of the clamping arms.
As an alternative solution of the embolic coil mechanism, the connection plate and the two corresponding branch arms are integrally connected.
As an alternative to the embolic coil mechanism, the proximal end of the push-pull rod extends out of the push tube.
As an optional technical scheme of the embolism spring ring mechanism, the embolism spring ring mechanism further comprises a conveying pipe, wherein the conveying pipe is coaxially sleeved outside the pushing pipe, and the pushing pipe and the conveying pipe are arranged at intervals along the radial direction.
As an optional technical scheme of the embolic coil spring mechanism, the protruding head is a cylinder and is coaxially connected with the rod body;
or the convex head is a sphere, and the sphere center of the convex head is positioned on the axis of the rod body.
As an optional technical scheme of the embolic coil mechanism, the pushing pipe is made of metal or high polymer material;
and/or the clamping piece is made of metal material.
The invention has the beneficial effects that:
the invention provides an embolic coil mechanism comprising a coil and a release assembly. The release assembly comprises a clamping piece, the clamping piece is provided with at least two clamping arms, the far ends of the clamping arms can be close to or far away from each other, and each clamping arm is connected with at least two spheres. When carrying the spring coil, the holder is in the clamping state in the propelling movement intraductal, and the distal end of pressing from both sides tight arm is close to each other, and whole spheroid all supports tightly with the lateral wall of the body of rod to press from both sides tight the body of rod, the protruding head of spring coil is located between the tight arm of clamp, and the distal end of protruding head can be contradicted with at least one spheroid. When the spring ring is released, the clamping piece is in a release state outside the push pipe, and the far ends of the clamping arms are far away from each other to release the protruding head and the rod body, so that the clamping piece is separated from the spring ring, and the mechanical release of the spring ring is realized. The embolism spring ring mechanism provided by the embodiment can realize mechanical release of the spring ring, and avoid the realization of mechanical release assisted by other auxiliary structures such as fiber silk, and meanwhile, when the clamping piece is in a release state, the clamping piece is positioned outside the pushing pipe, so that the spring ring can be completely separated from the pushing pipe after being released, the spring ring is prevented from shifting, the formation of embolism in aneurysm is ensured, the treatment effect is ensured, and the operation risk is also reduced, in addition, at least two spheres are connected to the clamping arms, the contact position between each clamping arm and the rod body is increased, and the protruding head can be abutted against at least one sphere, when the spring ring is conveyed, the clamping piece is ensured to reliably clamp the spring ring, the spring ring is prevented from being separated from the release assembly in the conveying process, the release of the spring ring to a wrong position is avoided, and the possibility of generating additional injury to a patient is reduced, the operation risk is reduced, the operation safety is guaranteed, moreover, the ball body and the rod body are in point contact, the requirement on the machining precision of the ball body is reduced, and the production cost is reduced.
Drawings
FIG. 1 is a schematic structural diagram of an embolic coil mechanism provided by an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of an embolic coil mechanism with a clamping member in a clamped state according to an embodiment of the present invention;
FIG. 3 is a schematic structural view of the embolic coil mechanism with the clamping member in a disengaged state as provided by embodiments of the present invention;
FIG. 4 is a schematic diagram of a portion of the embolic coil mechanism with a clamping member in a clamped state according to an embodiment of the present invention;
FIG. 5 is an enlarged view of a portion of FIG. 4 at A;
fig. 6 is a schematic structural view of a spherical protruding head according to an embodiment of the present invention.
In the figure:
1. a spring ring; 2. a rod body; 3. a protruding head; 4. pushing the pipe;
5. a clamping member; 51. a clamp arm; 511. a branch arm; 5111. an elastic connection section; 5112. an inclined section; 52. a connecting portion; 521. a connecting plate;
6. a push-pull rod; 7. a sphere.
Detailed Description
In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all 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.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
The present embodiment provides an embolic coil mechanism. Specifically, as shown in fig. 1-6, the embolic coil mechanism comprises a coil 1 and a release member. The near end of the spring ring 1 is connected with a rod body 2, and the near end of the rod body 2 is connected with a protruding head 3; the release assembly comprises a pushing pipe 4 and a clamping piece 5, the clamping piece 5 comprises at least two clamping arms 51, the at least two clamping arms 51 are arranged along the circumferential direction of the pushing pipe 4, the near ends of all the clamping arms 51 are connected with each other, the far end of each clamping arm 51 is connected with at least two spheres 7, and the clamping piece 5 has a clamping state located in the pushing pipe 4 and a release state located outside the pushing pipe 4; when holder 5 is configured to be in the centre gripping state, the distal end of at least two clamp arm 51 is close to each other, and all spheroid 7 all can with the lateral wall butt of the body of rod 2 and arrange along the circumference of the body of rod 2 to press from both sides tight body of rod 2, the proud 3 is located between at least two clamp arm 51 and the distal end of proud 3 can contradict with at least one spheroid 7, when holder 5 is configured to be in the state of breaking away, the distal end of at least two clamp arm 51 is kept away from each other, in order to release proud 3 and body of rod 2.
The present embodiment provides an embolic coil mechanism that includes a coil 1 and a release member. The releasing assembly comprises a clamping piece 5, the clamping piece 5 is provided with at least two clamping arms 51, the far ends of the clamping arms can approach or depart from each other, and at least two spheres 7 are connected to each clamping arm 51. When carrying spring coil 1, holder 5 is in the clamping state in push tube 4, and the distal end of clamping arm 51 is close to each other, and all spheroid 7 all support tightly with the lateral wall of the body of rod 2 to press from both sides tight body of rod 2, spring coil 1's bulge head 3 is located between the clamping arm 51, and the distal end of bulge head 3 can be contradicted with at least one spheroid 7. When releasing spring ring 1, holder 5 is in the state of releasing outside push tube 4, and the distal end of clamping arm 51 is kept away from each other to release protruding head 3 and the body of rod 2, realize holder 5 and spring ring 1 and break away from, realize the mechanical release of spring ring 1. The embolism spring ring mechanism provided by the embodiment can realize the mechanical release of the spring ring 1, and avoid the realization of the mechanical release assisted by other auxiliary structures such as fiber silk, and meanwhile, when the clamping piece 5 is in the release state, the clamping piece 5 is positioned outside the push pipe 4, so that the spring ring 1 can be completely separated from the push pipe 4 after being released, the spring ring 1 is prevented from shifting, the formation of embolism in aneurysm is ensured, the treatment effect is ensured, and the operation risk is also reduced, in addition, at least two spheres 7 are connected on the clamping arms 51, the contact position between each clamping arm 51 and the rod body 2 is increased, the bulge head 3 can be collided with at least one sphere 7, when the spring ring 1 is conveyed, the clamping piece 5 is ensured to reliably clamp the spring ring 1, the spring ring 1 is prevented from being separated from the release component in the conveying process, and the release of the spring ring 1 to the wrong position is avoided, the possibility of generating extra injury to the patient is reduced, the operation risk is also reduced, the safety of the operation is guaranteed, moreover, the ball body 7 and the rod body 2 are in point contact, the requirement on the machining precision of the ball body 7 is reduced, and the production cost is reduced.
It should be noted that, in this embodiment, "proximal" and "distal" are relative to the operator, and when the operator holds the embolic coil mechanism, the end closer to the operator is the proximal end, and the end farther from the operator is the distal end. Taking the orientation of fig. 1 as an example, the left side is the proximal end of the embolic coil mechanism and the right side is the distal end of the embolic coil mechanism.
In this embodiment, the pushing tube 4 is made of metal or polymer material, and may be one of PEEK, PA, HDPE, PTFE, 304 stainless steel, 316 stainless steel, nitinol, platinum-tungsten alloy, and platinum-iridium alloy. The components of the above materials are all in the prior art, and are not described in detail herein.
Preferably, the embolism spring ring mechanism further comprises a conveying pipe, the conveying pipe is coaxially sleeved outside the pushing pipe 4, and the pushing pipe 4 and the conveying pipe are arranged at intervals along the radial direction. Can get into before the patient is internal at embolism spring coil mechanism, it is internal to put into the patient with the seal wire, pass the seal wire again and push away the position of pipe 4 and conveyer pipe between, realized can accurately moving to the aneurysm along the seal wire, treatment is guaranteed, and it can follow axial relative movement with the conveyer pipe also to have realized push away pipe 4, the realization pushes away the conveyer pipe with spring coil 1, can separate completely with the conveyer pipe after having guaranteed that spring coil 1 breaks away from, prevent that spring coil 1 from taking place to shift, the formation of embolism in the aneurysm has been guaranteed, treatment is guaranteed, the operation risk has also been reduced.
Preferably, the release assembly further comprises a push-pull rod 6, the proximal ends of the at least two clamping arms 51 are connected to the distal end of the push-pull rod 6, and the push-pull rod 6 is disposed in the push tube 4 and can move relative to the push tube 4 along the axial direction of the push tube 4 to switch the clamping member 5 between the clamping state and the release state. Above-mentioned structure sets up, through the relative movement between push-and-pull rod 6 and push tube 4, realizes the switching of holder 5 between clamping state and disengagement state, has simplified the disengagement operation process of spring coil 1, and it is long to do benefit to shorten the operation, has reduced doctor's fatigue degree, has guaranteed the security of operation.
Preferably, the near end of the push-pull rod 6 extends out of the pushing tube 4, a doctor can directly hold the push-pull rod 6 through the near end of the push-pull rod 6 for operation, the release operation process of the spring ring 1 is further simplified, the operation duration is favorably shortened, the fatigue degree of the doctor is reduced, the safety of the operation is guaranteed, meanwhile, the situation that the push-pull rod 6 moves due to the adoption of other driving pieces is avoided, the influence of vibration generated by the driving pieces on the operation effect is reduced, meanwhile, the weight of the embolism spring ring mechanism is also reduced, the doctor can conveniently hold the embolism spring ring mechanism, and the fatigue degree of the doctor is further reduced.
In this embodiment, the push-pull rod 6 is made of a metal material, so that the structural strength is high, and the durability of the push-pull rod 6 is ensured. The material of the push-pull rod 6 can be one of 304 stainless steel, 316 stainless steel, nickel-titanium alloy, platinum-tungsten alloy and platinum-iridium alloy. The components of the above materials are all in the prior art, and are not described in detail herein.
Specifically, the push-pull rod 6 is arranged coaxially with the push pipe 4, the clamping member 5 includes two clamping arms 51 respectively arranged at two ends of the push-pull rod 6 along a first direction, each clamping arm 51 includes two branch arms 511 arranged along a second direction, proximal ends of the branch arms 511 are connected to the push-pull rod 6, a distal end of each branch arm 511 is correspondingly connected to one sphere 7, the first direction and the second direction are perpendicular to an axial direction of the push-pull rod 6, and the first direction is perpendicular to the second direction. Set up two clamp arms 51, and all be provided with two spheroid 7 on every clamp arm 51, realized firmly pressing from both sides tight spring coil 1, also avoided setting up too much clamp arm 51 simultaneously, alleviateed embolism spring coil mechanism's weight, the doctor of being convenient for grips, does benefit to and reduces doctor's fatigue degree, has guaranteed the security of operation. Moreover, the ball body 7 is correspondingly connected with the branch arms 511, so that the setting position of the ball body 7 can be conveniently determined, the assembly of the plug spring ring mechanism is convenient, the assembly efficiency is favorably improved, and the production cost is reduced. In other embodiments, the number of the clamping arms 51, the number of the branch arms 511 included in each clamping arm 51, and the number of the balls 7 disposed on each clamping arm 51 may be adaptively adjusted, so as to satisfy the one-to-one correspondence between the branch arms 511 and the balls 7, which is not limited herein.
Preferably, the branch arm 511 includes an elastic connection section 5111 and an inclined section 5112, a proximal end of the elastic connection section 5111 is connected to the push-pull rod 6, the inclined section 5112 is connected to a distal end of the elastic connection section 5111 at an angle, a distal end of the inclined section 5112 is inclined toward the axis of the push-pull rod 6 and connected to the ball 7, the distal end of the elastic connection section 5111 is inclined away from the axis of the push-pull rod 6 when the clamping member 5 is configured in the releasing state, and the distal ends of the elastic connection sections 5111 are close to each other when the clamping member 5 is configured in the clamping state. Above-mentioned structure sets up, when holder 5 was in the clamping status, slope section 5112 and spheroid 7 can form the backstop structure of backstop spheroid 7 in the distal end side of protruding head 3 jointly, and the diameter of having avoided spheroid 7 is too big, does benefit to the weight that reduces embolism spring coil mechanism, and the doctor of being convenient for grips, does benefit to the fatigue degree that reduces the doctor, has guaranteed the security of operation. Meanwhile, the diameters of the push pipe 4 and the conveying pipe are reduced, and extra injury to a patient in the treatment process is avoided. In this embodiment, an included angle between the elastic connection section 5111 and the inclined section 5112 is an obtuse angle, and a specific angle value can be adaptively selected according to the sizes of the protruding head 3, the ball 7 and the rod body 2. The elastic connection section 5111 and the inclined section 5112 are integrally connected, that is, the branch arm 511 is an integral structure and is formed by bending.
It can be understood that when the clamping member 5 is in the releasing state, the two clamping arms 51 are not constrained by the tube body 4, the distal ends of the elastic connecting section 5111 are away from each other and inclined away from the axis of the push-pull rod 6, and the two clamping arms 51 are opened in a V shape, so that the distal ends of the two clamping arms 51 are away from each other, the protruding head 3 and the connecting rod 2 are released, and the releasing of the spring ring 1 is realized; when the clamping piece 5 is in the clamping state, the two clamping arms 51 are restrained by the pipe body 4, and the elastic connecting section 5111 is closed, so that the spheres 7 on the two sides of the rod body 2 are close to each other, and the rod body 2 can be clamped. So this kind of structure setting, clamp arm 51's structure is comparatively simple, also need not other auxiliary structure moreover and stirs clamp arm 51 and realize opening and shutting, has avoided the 1 aversion of spring coil that other structure disturbance spring coil 1 lead to, has guaranteed treatment, has also reduced the operation risk.
Further, the holder 5 further includes a connecting portion 52, and the connecting portion 52 includes two connecting plates 521 perpendicular to the second direction, and the connecting plates 521 extend in the axial direction of the push-pull rod 6. The two connecting plates 521 are arranged along the second direction and are attached to each other, the proximal end of the connecting plate 521 is connected to the push-pull rod 6, the two ends of the distal end surface of the connecting plate 521 along the first direction are both connected to a branch arm 511, and the two branch arms 511 located on the same side of the two connecting plates 521 form a clamping arm 51. Above-mentioned structure sets up, through the connection of two connecting plates 521, realizes the formation of clamp arm 51, and the assembly of the embolism spring coil mechanism of being convenient for does benefit to and improves assembly efficiency, reduction in production cost. Meanwhile, the two plate-shaped connecting plates 521 are attached to each other and connected, so that a large connecting area is guaranteed, and the reliability of the structure of the clamping piece 5 is guaranteed.
In this embodiment, the two branch arms 511 located on the same side of the two connecting plates 521 are fixedly connected to form the clamping arm 51, so that the two branch arms 511 of the same clamping arm 51 can be synchronously close to or far away from each other, the spring ring 1 can be timely released, the treatment effect is ensured, and the reduction of the operation duration is facilitated.
Further, the connecting plate 521 and the two corresponding branch arms 511 are integrally connected, so that the production and the processing are convenient, the condition that the branch arms 511 are broken due to the fact that the structural strength of the connecting part between the connecting plate 521 and the branch arms 511 is low is avoided, the durability of the clamping piece 5 is ensured, meanwhile, extra damage to a patient is avoided, the treatment effect is ensured, and meanwhile, the safety of an operation is also ensured. In other embodiments, the connection plate 521 and the branch arm 511 may be connected by welding, which is not limited herein.
In this embodiment, the clamping member 5 is made of a metal material, so that the structural strength is high, the durability of the clamping member 5 is ensured, and the metal material also enables the elastic connecting section 5111 to have elasticity, thereby facilitating the approaching and separating of the distal ends of the branch arms 511. The material of the clamping piece 5 can adopt one of 304 stainless steel, 316 stainless steel, nickel-titanium alloy, platinum-tungsten alloy and platinum-iridium alloy. The components of the above materials are all in the prior art, and are not described in detail herein. Specifically, the ball 7 is also made of metal. The inclined section 5111 is connected with the ball 7, the two branch arms 511 of the same clamp arm 51, the two connecting plates 521, and the connecting plate 521 is connected with the push-pull rod 6 by welding.
In this embodiment, the connecting surface between the two connecting plates 521 is coplanar with one diameter of the push-pull rod 6, the corners of the proximal end surfaces of the two connecting plates 521 are located on the edge of the distal end surface of the push-pull rod 6, and the diameter of the push-pull rod 6 is slightly smaller than the inner diameter of the push-pull tube 4, so that while a large contact area is provided between the push-pull rod 6 and the connecting plates 521, the push-pull rod 6 can drive the clamping member 5 to move in the push-pull tube 4, thereby ensuring that the clamping member 5 can be smoothly switched between the clamping state and the releasing state.
In this embodiment, the protruding head 3 is a cylinder, and the protruding head 3 is coaxially connected to the rod body 2. At this time, the dimension of the protruding part 3 along the radial direction of the rod body 2 is the diameter of the protruding part 3, that is, the diameter of the protruding part 3 is larger than the diameter of the rod body 2.
In other embodiments, the protruding head 3 is a sphere, and the center of the protruding head 3 is located on the axis of the rod body 2. At this time, the dimension of the protruding part 3 along the radial direction of the rod body 2 is the diameter of the protruding part 3, that is, the diameter of the protruding part 3 is larger than the diameter of the rod body 2.
In other embodiments, the protruding head 3 may also be a rectangular parallelepiped or other structures, which is not limited herein.
In this embodiment, the rod body 2 and the spring ring 1 are coaxially connected, specifically, the rod body and the spring ring can be connected by welding or bonding, and the specific connection manner can refer to the prior art and is not described herein again. The protruding head 3 and the rod body 2 may be connected by welding or other methods, which are not limited herein.
Furthermore, the spring ring 1 can be coated with a coagulation promoting coating, so that the coagulation speed of the spring ring 1 in the aneurysm is accelerated, and the treatment effect is ensured. The rod body 2 and the protruding head 3 may also be coated with a coagulation promoting coating, which is not limited herein. The material of the coagulation promoting coating layer may be PGLA or other materials in the prior art, and will not be described herein again.
For ease of understanding, the method of use of the embolic coil mechanism provided in the present embodiments is described in detail below:
firstly, the projecting head 3 and the rod body 2 of the spring ring 1 are placed between the two clamping arms 51 of the clamping member 5 in the releasing state, and the push-pull rod 6 is pulled to make the push pipe 4 and the clamping member 5 move relatively in the axial direction, so that the clamping member 5 is in the clamping state. Secondly, the distal end of the guide wire is placed at the aneurysm in the patient, and the proximal end of the guide wire penetrates into the gap between the delivery tube and the push tube 4. Again, the distal end of the delivery tube is moved over the guidewire to the aneurysm and the guidewire is withdrawn. The push tube 1 is then pushed inside the delivery tube until the proximal end of the coil 1 is pushed out of the delivery tube into the aneurysm. And finally, the push-pull rod 6 is held and fixed, the push pipe 4 is withdrawn, and the clamping piece 5 is switched to a release state, so that the mechanical release of the spring ring 1 is realized.
It will be appreciated that in other embodiments, the retaining member 5 may not have a disengaged state outside the push tube 4, i.e., the resilient connecting section 5111 and the clamp arms 51 may not be deformed, and the clamp arms 51 need not be expanded outside the push tube 4. When delivering the spring coil 1, the protruding head 3 and the rod body 2 are located between the two clamping arms 51, and the protruding head 3 can not be released only by the limitation of the pushing tube 4, when the spring coil 1 is delivered to the inside of the aneurysm, the protruding head 3 can be separated from the clamping piece 5 through the gap between the two clamping arms 51, and the mechanical release of the spring coil 3 is realized.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

1. An embolic coil mechanism, comprising:
the spring ring (1) is connected with the rod body (2) at the near end, and the protruding head (3) is connected with the near end of the rod body (2);
the release assembly comprises a pushing pipe (4) and a clamping piece (5), the clamping piece (5) comprises at least two clamping arms (51), the at least two clamping arms (51) are arranged along the circumferential direction of the pushing pipe (4), the near ends of all the clamping arms (51) are connected with each other, the far end of each clamping arm (51) is connected with at least two spheres (7), and the clamping piece (5) has a clamping state located in the pushing pipe (4) and a release state located outside the pushing pipe (4);
holder (5) are configured to be in during the clamping state, at least two the distal end of pressing from both sides tight arm (51) is close to each other, and all spheroid (7) all can with the lateral wall butt of the body of rod (2) is followed the circumference of the body of rod (2) is arranged, in order to press from both sides tight the body of rod (2), protruding head (3) are located at least two press from both sides between the tight arm (51) just the distal end of protruding head (3) can with at least one spheroid (7) are contradicted, holder (5) are configured to be in during the disengagement state, at least two the distal end of pressing from both sides tight arm (51) is kept away from each other, in order to release protruding head (3) with the body of rod (2).
2. The embolic coil mechanism of claim 1, wherein the release assembly further comprises a push-pull rod (6), wherein the proximal ends of at least two of the clamping arms (51) are each connected to the distal end of the push-pull rod (6), and wherein the push-pull rod (6) is disposed within the push tube (4) and is movable relative to the push tube (4) in the axial direction of the push tube (4) to switch the gripping member (5) between the gripping state and the release state.
3. The embolic coil mechanism of claim 2, wherein the push-pull rod (6) is coaxially arranged with the push-pull tube (4), the holder (5) comprises two clamping arms (51) respectively arranged at two ends of the push-pull rod (6) along a first direction, each clamping arm (51) comprises two branch arms (511) arranged along a second direction, the proximal ends of the branch arms (511) are connected to the push-pull rod (6), the distal ends of each branch arm (511) are correspondingly connected to one of the spheres (7), the first direction and the second direction are perpendicular to the axial direction of the push-pull rod (6), and the first direction is perpendicular to the second direction.
4. The embolic coil mechanism of claim 3, wherein the branch arms (511) comprise elastic connecting segments (5111) and inclined segments (5112), wherein a proximal end of the elastic connecting segments (5111) is connected to the push-pull rod (6), wherein the inclined segments (5112) are connected to a distal end of the elastic connecting segments (5111) at an angle, wherein a distal end of the inclined segments (5112) is inclined toward an axis of the push-pull rod (6) and connected to the ball (7), wherein the clip (5) is configured such that in the disengaged state, a distal end of the elastic connecting segments (5111) is inclined away from the axis of the push-pull rod (6), and wherein the clip (5) is configured such that in the clamped state, distal ends of the elastic connecting segments (5111) are adjacent to each other.
5. The embolic coil mechanism of claim 3, wherein said clip (5) further comprises a connecting portion (52), said connecting portion (52) comprising two connecting plates (521) perpendicular to said second direction, said two connecting plates (521) being arranged along said second direction and being attached to each other, a proximal end of said connecting plates (521) being connected to said push-pull rod (6), one of said arms (511) being connected to both ends of a distal end surface of said connecting plates (521) along said first direction, and two of said arms (511) located on the same side of said two connecting plates (521) forming one of said clamping arms (51).
6. The embolic coil mechanism of claim 5, wherein said webs (521) and the two branch arms (511) corresponding thereto are integrally connected.
7. The embolic coil mechanism of claim 2, wherein a proximal end of the push-pull rod (6) extends out of the push tube (4).
8. The embolic coil mechanism of any of claims 1-7, further comprising a delivery tube coaxially sleeved outside the pusher tube (4), and wherein the pusher tube (4) is radially spaced from the delivery tube.
9. An embolic coil mechanism as in any of claims 1-7, wherein the protruding head (3) is cylindrical and the protruding head (3) is coaxially connected to the shaft (2);
or the protruding head (3) is a sphere, and the sphere center of the protruding head (3) is positioned on the axis of the rod body (2).
10. The embolic coil mechanism of any of claims 1-7, wherein the pusher tube (4) is a metal or polymeric material;
and/or the clamping piece (5) is made of metal material.
CN202210876264.8A 2022-07-25 2022-07-25 Plug spring ring mechanism Pending CN115068039A (en)

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CN202210876264.8A CN115068039A (en) 2022-07-25 2022-07-25 Plug spring ring mechanism

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Application Number Priority Date Filing Date Title
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115607219A (en) * 2022-10-18 2023-01-17 南京思脉德医疗科技有限公司 Release device for vascular embolism spring ring
CN116746977A (en) * 2023-06-25 2023-09-15 广东博迈医疗科技股份有限公司 Mechanical release spring ring system and manufacturing method and using method thereof
CN118078371A (en) * 2024-04-26 2024-05-28 杭州亿科医疗科技有限公司 Aneurysm plugging device and plugging device
CN118078373A (en) * 2024-04-26 2024-05-28 杭州亿科医疗科技有限公司 Aneurysm embolism system
CN118078370A (en) * 2024-04-26 2024-05-28 杭州亿科医疗科技有限公司 Aneurysm neck sealing device and aneurysm embolism system
CN118105127A (en) * 2024-04-26 2024-05-31 杭州亿科医疗科技有限公司 Aneurysm neck sealing device for assisting spring ring embolism

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115607219A (en) * 2022-10-18 2023-01-17 南京思脉德医疗科技有限公司 Release device for vascular embolism spring ring
CN115607219B (en) * 2022-10-18 2023-11-24 南京思脉德医疗科技有限公司 Release device of vascular embolism spring ring
CN116746977A (en) * 2023-06-25 2023-09-15 广东博迈医疗科技股份有限公司 Mechanical release spring ring system and manufacturing method and using method thereof
CN118078371A (en) * 2024-04-26 2024-05-28 杭州亿科医疗科技有限公司 Aneurysm plugging device and plugging device
CN118078373A (en) * 2024-04-26 2024-05-28 杭州亿科医疗科技有限公司 Aneurysm embolism system
CN118078370A (en) * 2024-04-26 2024-05-28 杭州亿科医疗科技有限公司 Aneurysm neck sealing device and aneurysm embolism system
CN118105127A (en) * 2024-04-26 2024-05-31 杭州亿科医疗科技有限公司 Aneurysm neck sealing device for assisting spring ring embolism
CN118078371B (en) * 2024-04-26 2024-07-12 杭州亿科医疗科技有限公司 Aneurysm plugging device and plugging device

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