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CN-121987292-A - Dynamic cutting plaque sacculus pipe and rotary driving mechanism

CN121987292ACN 121987292 ACN121987292 ACN 121987292ACN-121987292-A

Abstract

The invention discloses a dynamic cutting plaque balloon catheter and a rotary driving mechanism, and relates to the technical field of medical instruments, wherein the balloon catheter comprises a catheter assembly and a balloon body, and the balloon body is arranged on the catheter assembly and also comprises an adjustable dynamic cutting assembly; the adjustable dynamic cutting assembly is connected to the catheter assembly, the adjustable dynamic cutting assembly is matched with the outside of the balloon body, the balloon body can expand and prop open the adjustable dynamic cutting assembly, and the adjustable dynamic cutting assembly comprises a cutting part and a containing part. The expansion size of the dynamic cutting assembly can be adjusted through balloon body expansion control, so that the plaque on the inner wall of the blood vessel can be effectively cut into by means of the arranged cutting part and the cutting can be safely performed, meanwhile, plaque fragments generated by cutting the cutting part can be collected by means of the containing part, the plaque fragments are prevented from escaping to the distal end of the blood vessel, and safe cutting treatment of the plaque on the wall of the blood vessel is realized.

Inventors

  • XIAO SHIHUI
  • Yu Qianya
  • ZHU XINJIAN
  • CHEN SHUGUO

Assignees

  • 玄宇医疗用品(上海)有限公司
  • 上海玄宇医疗器械有限公司

Dates

Publication Date
20260508
Application Date
20260309

Claims (10)

  1. 1. A dynamically cut plaque balloon catheter, comprising a catheter assembly and a balloon body (3), wherein the balloon body (3) is arranged on the catheter assembly, and is characterized by further comprising an adjustable dynamically cut assembly; The adjustable dynamic cutting assembly is connected to the catheter assembly and is matched with the outside of the balloon body (3), and the balloon body (3) can expand and open the adjustable dynamic cutting assembly; the adjustable dynamic cutting assembly comprises a cutting part (5) and a containing part (6), wherein the cutting part (5) and the containing part (6) are integrally arranged, and the containing part (6) is used for collecting plaque fragments generated by cutting of the cutting part (5).
  2. 2. The catheter for dynamically cutting plaque balloon according to claim 1, wherein the catheter assembly comprises an outer tube (1) and an inner tube (2), the inner tube (2) is fixedly arranged in the outer tube (1) in a penetrating mode, the length of the inner tube (2) is larger than that of the outer tube (1), the balloon (3) is connected with the distal end of the outer tube (1), a guide wire (7) is arranged in the inner tube (2) in a penetrating mode, and a balloon filling connection valve (9) communicated with the balloon (3) is connected to the proximal end of the outer tube (1).
  3. 3. The dynamic cutting plaque balloon catheter according to claim 2, wherein one side of the cutting part (5) away from the accommodating part (6) is connected with the distal end of the outer tube body (1), and the cutting part (5) is wrapped outside the balloon body (3) in a matched manner, and the accommodating part (6) is matched outside the distal end of the inner tube body (2).
  4. 4. The dynamic cutting plaque balloon catheter according to claim 2, wherein the cutting part (5) and the accommodating part (6) are integrally woven by a plurality of woven wires and are of a net structure, the accommodating part (6) is cone-shaped, one side of the accommodating part (6) close to the cutting part (5) is an open end, and the other side is a tip and is connected with the distal end of the inner tube body (2).
  5. 5. The catheter of claim 4, wherein the braided wires used for the cutting part (5) and the receiving part (6) are shape memory alloy wires or shape memory polymer wires or a common braiding of shape memory alloy wires and shape memory polymer wires.
  6. 6. A dynamically cut plaque balloon catheter according to claim 4, wherein the braided wire cross-section of the cutting site (5) is circular or flat or triangular.
  7. 7. A dynamically cut plaque balloon catheter according to claim 2, wherein the distal end of the inner tube (2) is provided with a developing cap (4).
  8. 8. The dynamic cutting plaque balloon catheter according to claim 2, wherein the catheter assembly further comprises an outer delivery tube (8), the outer tube (1) being slidingly inserted within the outer delivery tube (8), the outer delivery tube (8) being adapted to receive an adjustable dynamic cutting assembly.
  9. 9. A rotary driving mechanism for driving a dynamic cutting plaque balloon catheter according to any one of claims 1 to 8 to rotate, comprising a handle housing (14), a multi-gear control switch (16) and a driving motor (12), wherein the driving motor (12) is fixedly installed in the handle housing (14), the multi-gear control switch (16) is installed on the surface layer of the handle housing (14), the multi-gear control switch (16) is electrically connected with the driving motor (12), a quick-insertion interface (11) coaxially and fixedly connected with a main shaft (13) of the driving motor (12) is rotatably connected on the outer side of the handle housing (14), and a torque transmission interface (10) matched with the quick-insertion interface (11) is fixedly arranged at the proximal end of the catheter assembly.
  10. 10. A rotary drive mechanism according to claim 9, characterized in that a rotation speed display (15) is connected to the circuit between the multi-gear control switch (16) and the drive motor (12).

Description

Dynamic cutting plaque sacculus pipe and rotary driving mechanism Technical Field The invention relates to the technical field of medical instruments, in particular to a dynamic plaque cutting balloon catheter and a rotary driving mechanism. Background The arterial vascular internal blocking lesion is a main pathological basis of cardiovascular and cerebrovascular diseases and peripheral vascular diseases, and takes atherosclerosis plaque as a core, and is often accompanied with thrombosis and calcification, so that vascular stenosis or occlusion can be caused, serious clinical consequences such as myocardial infarction, cerebral apoplexy and the like can be caused, the morbidity is high in the elderly population, the hazard is obvious, and interventional treatment means are generally adopted for treatment. The prior interventional treatment method mainly comprises the steps of expanding a blood vessel through the traditional balloon expansion or stent implantation, and then directly removing the plaque by means of the volume reduction technologies such as plaque rotary cutting or laser ablation. However, when the traditional balloon is expanded or the stent is implanted into a blood vessel to be expanded in the existing interventional treatment means, the problems of blood vessel retraction and the like are easy to occur, meanwhile, the rotary cutting device has low treatment efficiency on calcified plaque and can generate larger plaque fragments to cause embolism, the laser ablation has a plurality of operation times, the risk of thermal injury to the blood vessel is easy to occur, meanwhile, the risk of distal escape of the plaque fragments after operation is also easy to occur, namely, the existing interventional treatment means for treating the blood vessel plaque obstruction is difficult to consider the treatment effect and the safety, and the problems of insufficient efficiency and more complications are generally faced. Disclosure of Invention The invention aims to provide a dynamic cutting plaque saccule catheter and a rotary driving mechanism, which are used for solving the technical problems that in the prior art, the risk of plaque fragment distal escape easily occurs in a vascular plaque treatment intervention means, and the treatment effect and the safety are general. The technical problems to be solved by the invention can be realized by the following technical scheme: a dynamic cutting plaque balloon catheter, comprising a catheter assembly and a balloon body, wherein the balloon body is arranged on the catheter assembly, and further comprises an adjustable dynamic cutting assembly; the adjustable dynamic cutting assembly is connected to the catheter assembly and is matched with the outside of the balloon body, and the balloon body can expand and prop open the adjustable dynamic cutting assembly; the adjustable dynamic cutting assembly comprises a cutting part and a containing part, wherein the cutting part and the containing part are integrally arranged, and the containing part is used for collecting plaque fragments generated by cutting of the cutting part. Preferably, the catheter assembly comprises an outer tube body and an inner tube body, wherein the inner tube body is fixedly arranged in the outer tube body in a penetrating mode, the length of the inner tube body is larger than that of the outer tube body, the balloon body is connected with the distal end of the outer tube body, a guide wire is arranged in the inner tube body in a penetrating mode, and a balloon filling connection valve communicated with the balloon body is connected to the proximal end of the outer tube body. Preferably, one side of the cutting part far away from the accommodating part is connected with the distal end of the outer tube body, the cutting part is matched and wrapped outside the balloon body, and the accommodating part is matched and positioned outside the distal end of the inner tube body. Preferably, the cutting part and the accommodating part are integrally woven by a plurality of woven wires and are both in a net structure, the accommodating part is cone-shaped, one side of the accommodating part, which is close to the cutting part, is an open end, and the other side of the accommodating part is a tip and is connected with the distal end of the inner tube body. Preferably, the braiding wires adopted by the cutting part and the accommodating part are shape memory alloy wires or shape memory high polymer wires or shape memory alloy and shape memory high polymer wire braiding bodies. Preferably, the section of the knitting wire of the cutting part is round, flat or triangular. Preferably, the distal end of the inner tube body is provided with a developing cap. Preferably, the catheter assembly further comprises an outer delivery tube slidably inserted within the outer delivery tube for receiving the adjustable dynamic cutting assembly. The utility model provides a rotary driving mechanism for driving s