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CN-122004990-A - Spring ring mechanical release device and aneurysm embolism system

CN122004990ACN 122004990 ACN122004990 ACN 122004990ACN-122004990-A

Abstract

The invention discloses a spring ring mechanical release device and an aneurysm embolism system, and relates to the technical field of aneurysm embolism apparatuses, comprising a push rod and a release mechanism, wherein the distal end of the push rod is provided with a mechanical locking mechanism, and the mechanical locking mechanism has a locking state and a releasing state; the mechanical locking mechanism is used for being detachably connected with the proximal end of the spring ring; the remote end of the release mechanism is connected with the mechanical locking mechanism, the near end of the release mechanism is a force application end, the locking state and the releasing state of the mechanical locking mechanism can be switched by controlling the force application end, and the invention can realize the controllability of the release time of the spring ring and avoid the problems of false release and poor controllability of the spring ring.

Inventors

  • You Zichao

Assignees

  • 北京华脉泰科医疗器械股份有限公司

Dates

Publication Date
20260512
Application Date
20260414

Claims (10)

  1. 1. A spring coil mechanical trip device, comprising: The device comprises a push rod, a spring ring, a locking mechanism and a locking mechanism, wherein the mechanical locking mechanism is arranged at the far end of the push rod and is provided with a locking state and a releasing state; and the distal end of the release mechanism is connected with the mechanical locking mechanism, the proximal end of the release mechanism is a force application end, and the locking state and the releasing state of the mechanical locking mechanism can be switched by controlling the force application end.
  2. 2. The mechanical spring coil release arrangement of claim 1, wherein the mechanical locking mechanism includes at least two jaws evenly spaced along a circumference of the push rod, a plurality of the jaws for gripping a proximal end of the spring coil, the release mechanism being capable of controlling a spacing between the plurality of the jaws to switch between a locked state and an unlocked state achieved by mating of the plurality of the jaws.
  3. 3. The spring coil mechanical release device according to claim 2, wherein through holes are formed in the clamping jaws, the release mechanism comprises a traction wire, the traction wire sequentially penetrates through the through holes in all the clamping jaws, and the locking state and the releasing state which are achieved by matching of the clamping jaws can be switched by adjusting the acting force on the traction wire.
  4. 4. An aneurysm embolization system, comprising: the catheter comprises a catheter, wherein at least two balloons are arranged at intervals at the distal end of the catheter along the length direction, exchange holes are formed in the wall of the catheter between adjacent balloons, and a main pipe cavity and at least one medium pipe cavity which are arranged in parallel are formed in the catheter, and the medium pipe cavity is communicated with the balloons; The guide pipe is movably arranged in the main pipe cavity in a penetrating way; A spring ring; a spring coil mechanical release device according to any one of claims 1-3, wherein a push rod in said spring coil mechanical release device drives said spring coil to movably pass through said guide tube, and a proximal end of said release mechanism is exposed from a proximal end of said guide tube.
  5. 5. The aneurysm embolization system of claim 4, wherein both ends of the balloon and the distal end of the guide tube are provided with visualization rings.
  6. 6. The aneurysm embolization system of claim 4, wherein the spring loop comprises: A spring body; the connecting ball is fixed at the proximal end of the spring main body and is detachably connected with the mechanical locking mechanism; A guide ball fixed at a distal end of the spring body; and two ends of the connecting wire are respectively connected with the connecting ball and the guide ball.
  7. 7. The aneurysm embolization system of claim 4, further comprising a handle connected to the proximal end of the catheter, the handle having disposed thereon: The guide tube pushing mechanism is connected with the guide tube and can push the guide tube; The push rod pushing mechanism is connected with the push rod and can push the push rod; and the force application mechanism is connected with the proximal end of the release mechanism and is used for applying force to the release mechanism so as to control the connection state of the mechanical locking mechanism and the spring ring.
  8. 8. The aneurysm embolization system of claim 7, wherein the guide tube pushing mechanism and the pushrod pushing mechanism are both wheeled pushing mechanisms, the wheeled pushing mechanisms comprise a first runner and a second runner, a feeding interval is formed between the first runner and the second runner, and the guide tube or the pushrod is located in the feeding interval and abuts against the first runner and the second runner.
  9. 9. The aneurysm embolization system of claim 7, wherein the proximal end of the guide tube has a guide hub, the guide hub being adapted to abut the guide tube pushing mechanism.
  10. 10. The aneurysm embolization system of claim 4 or 9, wherein a sealing ring is further provided in the proximal inner wall of the guide tube, the sealing ring sealingly engaging the outer wall of the pushrod.

Description

Spring ring mechanical release device and aneurysm embolism system Technical Field The invention relates to the technical field of aneurysm embolism apparatuses, in particular to a spring ring mechanical release device and an aneurysm embolism system. Background Implantation is a type of surgical procedure in which implants (e.g., prostheses, stents, crystals, electrodes, etc.) made of artificial or biological materials are implanted into the human body to repair damaged tissues, replace organ functions, or correct physiological defects. The core purpose is to recover the normal physiological function of the organism and improve the life quality of the patient through the synergistic effect of the implantation of the foreign body and the human tissues, and the method is widely applied to a plurality of medical fields of orthopaedics, cardiology, ophthalmology, otorhinolaryngology and the like, and is one of the important means of modern surgical treatment. The artificial prosthesis is an important instrument for implantation treatment, and medical materials are various, mainly comprise biomedical materials, medical artificial prostheses and the like, and are used in surgical formulas with different purposes according to different performances. The most common of vascular diseases is the use of coils. Embolic coils are interventional medical devices used for peripheral aneurysms, arteriovenous malformations, and arteriovenous fistula embolic treatment. The spring coil embolism is a minimally invasive interventional therapy technology, is mainly used for blocking blood flow of abnormal blood vessels or lacuna, and is widely applied to the fields of nerve intervention, peripheral blood vessel intervention and the like. The core principle is that by filling mechanical tamponade (spring coil) into the target vessel, thrombosis is induced, thereby permanently occluding the vessel or lumen. The spring ring is made of platinum, tungsten and other metals, and has shape memory property and biocompatibility. When released into the target vessel (e.g., aneurysm sac, arteriovenous malformation, bleeding vessel, etc.), the coil will resume its preset three-dimensional shape (e.g., spiral, complex shape), locally coiling into clusters, forming a physical barrier, directly blocking the blood flow channel. Secondly, the metal surface of the spring ring can be used as a bracket for attaching platelets and fibrin to quickly activate the coagulation cascade reaction. The coiled spring coil greatly slows down local blood flow velocity (blood stasis formation) and further promotes thrombosis. Finally, the spring coil group and the stable thrombus formed in the spring coil group form a permanent plug body together to realize vascular occlusion. Third, hemodynamic changes, in which the coil not only fills the lumen of the tumor, but more importantly remodels the blood flow at the neck of the tumor, during the treatment of the aneurysm. It acts like a "shunt" to direct blood flow away from the lumen of the tumor and directly into the distal parent artery, thereby significantly reducing intratumoral pressure and blood flow impingement and preventing rupture or regrowth. Coil embolization is the dominant minimally invasive interventional method for treating arterial aneurysms. However, the spring coils in the prior art are mainly released by electrolysis and mechanical release. The electrolytic stripping relies on blood conductivity, the stripping speed is low, the controllability of the stripping process is poor, the stripping failure is easy to cause, the controllability of the traditional mechanical stripping structure is also poor, and the risk of unexpected advanced stripping or difficult stripping exists. Therefore, there is an urgent need for an operating device that is accurate in manipulation and reliable in disengagement. Disclosure of Invention The invention aims to provide a spring coil mechanical release device and an aneurysm embolism system, so as to solve the problems in the prior art, realize the controllability of the release time of a spring coil and avoid the problems of incorrect release and poor controllability of the spring coil. In order to achieve the above object, the present invention provides the following solutions: The mechanical release device for the spring ring comprises a push rod and a release mechanism, wherein a mechanical locking mechanism is arranged at the far end of the push rod and is provided with a locking state and a releasing state, the mechanical locking mechanism is used for being detachably connected with the near end of the spring ring, the far end of the release mechanism is connected with the mechanical locking mechanism, the near end of the release mechanism is a force application end, and the locking state and the releasing state of the mechanical locking mechanism can be switched by controlling the force application end. As an implementation mode, the mechanical locking mechanism