Thrombus breaking device and thrombus separating device

Abstract

The utility model provides a thrombus breaking device and a thrombus separating device, and relates to the technical field of medical instruments, the thrombus breaking device comprises a winding spring and a guide wire, the guide wire is arranged in the winding spring in a penetrating mode and fixed to the two ends of the winding spring. The spindle-shaped winding spring is arranged on the guide wire, the guide wire is pulled front and back, the winding spring can be used for breaking the bolt, and after the elastic force of the winding spring intervenes in the bolt breaking process, the bolt breaking capacity and the bolt breaking efficiency of the bolt breaking device can be improved; in addition, the structural form of the winding spring is simpler, and the manufacturing difficulty and the manufacturing cost of the suppository breaker can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument technical field especially, relate to a kind of broken thrombectomy device and thrombus separation device. BACKGROUND

[0002] Peripheral vascular diseases, especially the formation of arterial and venous thrombosis, have always been an important challenge in clinical treatment. Such diseases not only cause patients pain, swelling and dysfunction, but also even endanger life in severe cases. The formation of thrombus can block blood flow, leading to tissue ischemia and organ damage, therefore, effective thrombus removal is the key to the treatment of these diseases.

[0003] Traditional thrombus removal methods mainly include drug therapy and open surgery. However, drug therapy often has limited effect and has the risk of complications such as bleeding; while open surgery is traumatic, slow to recover, and has a high incidence of complications. With the continuous progress of medical technology, interventional therapy as a minimally invasive and efficient treatment method has gradually become an important means of peripheral vascular disease treatment.

[0004] In interventional therapy, thrombus separator as an innovative treatment tool provides doctors with more accurate and efficient treatment means. Thrombus separator usually adopts a unique basket design, which can efficiently direct attract and cut large load thrombus, thereby improving the efficiency of thrombus removal. At the same time, the material of the separator is carefully selected to ensure its stability and safety during use.

[0005] However, the structure of the thrombus separator is relatively complex, the manufacturing process is more cumbersome, for example, the above-mentioned basket design; and the thrombus breaking efficiency is low, therefore, it is necessary to develop a thrombus separator with a simpler structure that can improve the thrombus breaking capacity and efficiency of the thrombus breaking device. SUMMARY

[0006] The utility model aims at providing a kind of broken thrombectomy device and thrombus separation device to solve the problems existing in prior art, by setting up the spring of spindle shape on guide wire, pull guide wire forward and backward, can utilize spring to break thrombus, and the spring elasticity intervenes in the process of breaking thrombus, can improve the thrombus breaking capacity and efficiency of broken thrombectomy device;In addition, the structure of spring in the utility model is simpler, which can reduce the manufacturing difficulty and manufacturing cost of broken thrombectomy device.

[0007] To achieve the above-mentioned purpose, the utility model provides the following scheme:

[0008] A kind of broken thrombectomy device, including spring and guide wire, the spring is spindle-shaped;The guide wire is arranged in the spring, and is fixed with both ends of the spring.

[0009] As an embodiment, the winding spring comprises a spindle-shaped segment and a distal end cylindrical segment and a proximal end cylindrical segment connected at two ends of the spindle-shaped segment, and the guide wire is fixedly connected with a distal end of the distal end cylindrical segment and a proximal end of the proximal end cylindrical segment.

[0010] As an embodiment, the distal end cylindrical segment and the proximal end cylindrical segment have the same length, and the spindle-shaped segment has a length of 1-2 times the length of the distal end cylindrical segment.

[0011] As an embodiment, the spindle-shaped segment has a maximum diameter of 2-4 times a minimum diameter of an end portion.

[0012] As an embodiment, the guide wire is coaxially arranged with the winding spring.

[0013] As an embodiment, the guide wire has a round head at a distal end.

[0014] As an embodiment, the winding spring is made of stainless steel.

[0015] As an embodiment, the guide wire is made of nickel-titanium alloy.

[0016] As an embodiment, the guide wire is fixedly connected with both ends of the winding spring by welding.

[0017] The utility model discloses still a kind of thrombus separation device, including suction catheter and the thrombus separator as above, the proximal end of the suction catheter is used to connect negative pressure adsorption equipment;The guide wire is used to be arranged in the suction catheter, and the maximum diameter of the winding spring is less than the inner diameter of the suction catheter.

[0018] The utility model has the following technical effects relative to prior art:

[0019] The utility model discloses a winding spring in spindle shape is arranged on guide wire, and thrombus is broken by winding spring by pulling guide wire forwards and backwards, and the thrombus breaking capacity and thrombus breaking efficiency of thrombus separator can be improved after the elastic force of winding spring is intervened in thrombus breaking process;In addition, the structure of winding spring in the utility model is simpler, and the manufacturing difficulty and manufacturing cost of thrombus separator can be reduced.

[0020] The maximum diameter of winding spring in the utility model is less than the inner diameter of suction catheter, when suction catheter is blocked during thrombus suction process, suction catheter can be dredged by winding spring by pulling guide wire, and the normal thrombus separation process can be ensured. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical schemes in the embodiments of the present application or in the prior art, the drawings needed to be used in the embodiments will be briefly introduced as follows. Obviously, the drawings described in the following only constitute some of the embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0022] Fig. 1 It is a structural schematic diagram of the broken bolt device in an embodiment of the present application.

[0023] Fig. 2 It is a working process schematic diagram of the thrombus separation device in an embodiment of the present application.

[0024] Explanation of reference signs:

[0025] 1, around spring; 2, guide wire; 3, spindle-shaped section; 4, distal end cylindrical section; 5, proximal end cylindrical section; 6, round head; 7, suction catheter. Specific implementation

[0026] The technical schemes in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments only constitute some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0027] The purpose of the present application is to provide a broken bolt device and a thrombus separation device, so as to solve the problems in the prior art. By setting the around spring in the spindle shape on the guide wire, the guide wire is pulled forward and backward, the broken bolt can be performed by using the around spring, and after the elastic force of the around spring is involved in the broken bolt process, the broken bolt capacity and the broken bolt efficiency of the broken bolt device can be improved. In addition, the structure of the around spring in the present application is simpler, and the manufacturing difficulty and manufacturing cost of the broken bolt device can be reduced.

[0028] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the present application will be further described in detail in combination with the drawings and specific embodiments.

[0029] Embodiment 1:

[0030] As Figs. 1-2As shown, the embodiment provides a thrombus breaker, which comprises a coil spring 1 and a guide wire 2. The coil spring 1 is spirally wound by metal wire into a spindle shape, and has gaps between adjacent spiral sections. The guide wire 2 is arranged in the coil spring 1 and fixed to both ends of the coil spring 1. The coil spring 1 is arranged at or near the distal end of the guide wire 2. In the embodiment, the distal end refers to the end far from the operator, and the proximal end refers to the end close to the operator, which can also be understood as the hand-held end or the operating end.

[0031] In use, the guide wire 2 is arranged at the thrombus position in the blood vessel, and the guide wire 2 is pushed forward (distal end). Under the support of the guide wire 2, the coil spring 1 can be arranged in the thrombus, and then the guide wire 2 is pulled backward (proximal end). The spindle-shaped coil spring 1 can break the thrombus or peel off the thrombus from the blood vessel, and the breaking method is simpler. When the guide wire 2 is pulled backward, the coil spring 1 will be deformed in the axial direction. Specifically, the largest cross-sectional position of the coil spring 1 is taken as a boundary surface. When the guide wire 2 is pulled backward, the gap of the spiral structure on the proximal end side of the boundary surface in the coil spring 1 will become larger, and the gap of the spiral structure on the distal end side will become smaller under the obstruction of the thrombus. After the reset elastic force of the deformed coil spring 1 acts on the thrombus, the thrombus breaking capacity and efficiency will be improved.

[0032] Therefore, the embodiment can break the thrombus by arranging the spindle-shaped coil spring 1 on the guide wire 2 and pulling the guide wire 2 forward and backward, and the reset elastic force of the coil spring 1 can improve the thrombus breaking capacity and efficiency of the thrombus breaker after the elastic force is involved in the thrombus breaking process. In addition, the structure of the coil spring 1 in the embodiment is simpler, which can reduce the manufacturing difficulty and cost of the thrombus breaker.

[0033] As an embodiment, the coil spring 1 in the embodiment comprises a spindle-shaped section 3 and distal end cylindrical sections 4 and proximal end cylindrical sections 5 connected to both ends of the spindle-shaped section 3. The diameters of the distal end cylindrical sections 4 and the proximal end cylindrical sections 5 are equal to the diameters of both ends of the spindle-shaped section 3. The guide wire 2 is fixedly connected to the distal end of the distal end cylindrical sections 4 and the proximal end of the proximal end cylindrical sections 5. In the embodiment, the lengths of the distal end cylindrical sections 4 and the proximal end cylindrical sections 5 are equal, and the length of the spindle-shaped section 3 is 1-2 times the length of the distal end cylindrical sections 4. The maximum diameter of the middle part of the spindle-shaped section 3 is 2-4 times the minimum diameter of the end part (i.e. the diameters of the distal end cylindrical sections 4 and the proximal end cylindrical sections 5).

[0034] As an embodiment, the guide wire 2 is coaxially arranged with the coil spring 1.

[0035] As an embodiment, the distal end of the guide wire 2 has a round head 6, and the round head 6 is fixedly connected to the distal end of the coil spring 1 by plasma welding. The round head 6 can avoid scratching the blood vessel, improve the passability of the guide wire 2, and make the coil spring 1 more easily enter the thrombus.

[0036] As an embodiment, the material of the coil spring 1 is stainless steel, which can further reduce the manufacturing cost of the thrombus breaker; the material of the guide wire 2 is nickel-titanium alloy, and the guide wire 2 is fixedly connected with the proximal end of the coil spring 1 by means of tin soldering.

[0037] Embodiment 2

[0038] The embodiment provides a thrombus separation device, which comprises a suction catheter 7 and the thrombus breaker as described above, the proximal end of the suction catheter 7 is used for connecting a negative pressure suction device; the guide wire 2 is used for being arranged in the suction catheter 7, and the maximum diameter of the coil spring 1 is smaller than the inner diameter of the suction catheter 7.

[0039] As shown in Fig. 2 , in use, the guide wire 2 is arranged in the suction catheter 7, and a staff member pulls the guide wire 2 forward and backward to break the thrombus by means of the coil spring 1; after the suction catheter 7 is connected with the negative pressure suction device, the broken and peeled thrombus can be sucked. If the suction catheter 7 is blocked by the thrombus during the suction process, the staff member pulls the coil spring 1 into the suction catheter 7, and then pulls the guide wire 2 forward and backward at the blocked position, so that the suction catheter 7 is dredged by means of the coil spring 1, and the thrombus separation process can be ensured to be normally performed.

[0040] The adaptive changes according to actual requirements are all within the protection scope of the utility model.

[0041] The principle and implementation mode of the utility model are described by means of specific examples in the utility model, and the above embodiment is only used for helping to understand the method and core idea of the utility model; meanwhile, according to the idea of the utility model, the specific implementation mode and application range will be changed by the general technical personnel in the field. In conclusion, the content of the specification should not be understood as the limitation of the utility model.

Claims

1. A thrombus separation device, characterized by, The application relates to a suction catheter, which comprises: a suction catheter, a proximal end of which is used for connecting a negative pressure suction device; a dislodge device, which comprises: a coil spring, which is in a spindle shape; and a guide wire, which is arranged in the coil spring and is fixed to both ends of the coil spring; the guide wire is arranged in the suction catheter, the maximum diameter of the coil spring is smaller than the inner diameter of the suction catheter; there is a gap between adjacent spiral sections of the coil spring.

2. The thrombectomy device of claim 1, wherein, The coil spring comprises a spindle section and a distal end cylindrical section and a proximal end cylindrical section connected to both ends of the spindle section, and the guide wire is fixed to the distal end of the distal end cylindrical section and the proximal end of the proximal end cylindrical section.

3. The thrombectomy device of claim 2, wherein, The distal end cylindrical section and the proximal end cylindrical section have the same length, and the length of the spindle section is 1-2 times the length of the distal end cylindrical section.

4. The thrombectomy device of claim 3, wherein, The maximum diameter of the middle part of the spindle section is 2-4 times the minimum diameter of the end part.

5. The thrombectomy device of any one of claims 1-4, wherein, The guide wire is coaxially arranged with the coil spring.

6. The thrombectomy device of claim 5, wherein, The distal end of the guide wire is provided with a round head.

7. The thrombectomy device of claim 6, wherein, The material of the coil spring is stainless steel.

8. The thrombectomy device of claim 7, wherein, The material of the guide wire is nickel-titanium alloy.

9. The thrombectomy device of claim 8, wherein, The guide wire is fixed to both ends of the coil spring through welding.

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