A plug spring release structure

Abstract

The application discloses a novel embolism spring release structure, which comprises a connecting block and a release head; one end of the connecting block is connected with a push rod to form a connecting part, the other end forms a blocking part, an opening is arranged on the blocking part, and a containing groove is formed between the connecting part and the blocking part; the release head is located in the containing groove and can slide along the length direction of the connecting block, and one end of the release head is connected with an embolism spring through the opening. The novel embolism spring release structure provided by the application sets the containing groove on the connecting block and sets the release head in the containing groove, so that when being located in a delivery catheter, the delivery catheter can limit the release head and limit the release head in the containing groove; when being located outside the delivery catheter, the delivery catheter no longer limits the release head, and the release head can be separated from the containing groove. When not being pushed out from the delivery catheter, the embolism spring can be recycled, and the fault tolerance during operation is increased; the design of the containing groove with a large opening makes the release head easy to separate and difficult to be adsorbed by viscous blood.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of embolization spring release, in particular to an embolization spring release structure. BACKGROUND

[0002] The embolization spring release structure is a structure for releasing the spring coil and the push rod in the intravascular embolization intervention surgery. The release modes mainly include electrolytic release, mechanical release, thermal release and hydrolysis release. The embolization spring release structures on the market at present mainly adopt the mechanical release mode, that is, the release effect is realized by operating the device through a special mechanical structure. For example, a release wire is connected between the push rod and the spring coil, and after the spring coil is filled and stabilized, the push rod is gently pulled to disconnect the release wire, so as to separate the spring coil and the push rod. However, this way is separated when the push rod is withdrawn, and the fault tolerance is low. Or an interactive arm structure is arranged between the push rod and the spring coil, and when the spring coil is completely pushed out of the delivery catheter, the interactive arm release structure is released under the action of gravity or the push-pull force of the push rod. However, this way is prone to poor release, and when the release structure is attached to the viscous blood in the blood vessel to form a thrombus, the release structure may not be separated. SUMMARY

[0003] In order to solve the above technical problems, the present application provides an embolization spring release structure. The specific technical scheme is as follows:

[0004] An embolization spring release structure, comprising a release structure main body, the release structure main body being located in a delivery catheter, the release structure main body comprising:

[0005] A connecting block, one end of which is connected to a push rod to form a connecting part, and the other end of which forms a blocking part, an opening being arranged on the blocking part, and a containing groove being formed between the connecting part and the blocking part;

[0006] A release head, located in the containing groove and being slidable along the length direction of the connecting block, one end of the release head being connected to an embolization spring through the opening.

[0007] Preferably, a connecting rod is formed in the part of the release head located in the opening, and the connecting rod is connected to the embolization spring.

[0008] Preferably, the connecting block is a cylindrical structure, the containing groove is a groove body arranged on the side wall of the cylindrical structure, and the connecting part and the blocking part are respectively formed at the two ends of the cylindrical structure.

[0009] Preferably,

[0010] The depth of the groove body is greater than the radius of the cylindrical structure;

[0011] The groove body extends through the cylindrical structure in the radial direction.

[0012] Preferably,

[0013] The extending direction of the opening is consistent with the depth direction of the accommodating groove.

[0014] The bottom of the opening is flush with the bottom of the accommodating groove.

[0015] Preferably, the connecting rod is transitionally fitted with the opening.

[0016] Preferably, the blocking part is a bevel or arc surface near one side of the release head.

[0017] Preferably, the release head is a spherical type, a cylindrical type or a cylindrical type with a cutting surface on one side.

[0018] Preferably, further comprising an adsorption assembly, the adsorption assembly comprising:

[0019] An adsorption surface is arranged in the accommodating groove, and the release head is partially profile-fitted with the adsorption surface.

[0020] A fiber tube is adapted to fluid medium flow, one end of the fiber tube is communicated with the adsorption surface to form an adsorption port, and the other end is connected with an exhaust member.

[0021] Preferably, an adsorption groove is arranged in the accommodating groove, one side of the groove opening of the adsorption groove forms the adsorption surface, and the fiber tube is communicated with the adsorption groove.

[0022] The present application provides a kind of embolism spring release structure, by being arranged in the connecting block of release structure main body accommodating groove, and release head is arranged in accommodating groove, so that when release structure main body is located in delivery catheter, delivery catheter can limit release head, release head is limited in accommodating groove;When release structure main body is located outside delivery catheter, delivery catheter no longer limits release head, and release head can be separated from accommodating groove under the twist of embolism spring.When release structure main body is not pushed out from delivery catheter, embolism spring can be recycled, and the fault tolerance rate when operating is increased;The design of large opening accommodating groove makes release head easy to separate, and it is not easy to be adsorbed by viscous blood. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments described in 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.

[0024] Figure 1 The three-dimensional structure schematic diagram of the embolism spring release structure provided by the embodiment of the present application;

[0025] Figure 2 A perspective view of a release structure main body according to an embodiment of the present application;

[0026] Figure 3 An exploded view of a release structure main body according to an embodiment of the present application;

[0027] Figure 4 A separation principle view of a connecting block and a release head according to an embodiment of the present application;

[0028] Figure 5 Another separation principle view of a connecting block and a release head according to an embodiment of the present application;

[0029] Figure 6 A perspective view of a connecting block according to another embodiment of the present application;

[0030] Figure 7 A perspective view of a release head according to embodiment 3 of the present application;

[0031] Figure 8 A perspective view of a release head according to embodiment 4 of the present application;

[0032] Figure 9 A sectional front view of a release structure main body according to embodiment 1 of the present application;

[0033] Figure 10 A sectional front view of a release structure main body according to embodiment 2 of the present application;

[0034] Figure 11 A sectional front view of a release structure main body according to embodiment 5 of the present application;

[0035] Figure 12 A sectional front view of a release structure main body according to embodiment 6 of the present application; Figure 11 A partial enlarged view of part A;

[0036] Figure 13 A sectional front view of a release structure main body according to embodiment 6 of the present application;

[0037] Figure 14 A front view of an exhaust member according to an embodiment of the present application.

[0038] Reference numerals

[0039] Release structure main body; 20 - delivery conduit; 30 - push rod; 40 - plug spring;

[0040] Connecting block; 11 - connecting portion; 12 - blocking portion; 121 - opening; 13 - accommodating groove;

[0041] release head; 21-connecting rod

[0042] suction assembly; 31-suction surface; 32-fiber tube; 33-suction groove; 34-needle tube; 35-elastic member. DETAILED DESCRIPTION

[0043] In order to make the technical solution of the present application better understood by those skilled in the art, the present application will be described in detail below with reference to the accompanying drawings, and the description in this part is only exemplary and explanatory, and should not have any limiting effect on the protection scope of the present application.

[0044] It should be noted that: similar reference numerals represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0045] It should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the product of the present application is usually placed, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second" and the like are only used for differentiation and cannot be understood as indicating or implying relative importance.

[0046] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the parts must be absolutely horizontal or overhanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0047] In the description of the present application, it should also be noted that, unless otherwise explicitly specified and limited, the terms "arrangement", "installation", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0048] Please see Figures 1 to 14 The present embodiment provides a plug spring release structure, which comprises a release structure main body 10, the release structure main body 10 is located in a delivery catheter 20, and the release structure main body 10 comprises a connecting block 1 and a release head 2.

[0049] The connecting block 1 is connected with the push rod 30 at one end to form a connecting portion 11, and is formed with a blocking portion 12 at the other end, and the blocking portion 12 is provided with an opening 121, and the connecting portion 11 and the blocking portion 12 are formed with a receiving groove 13 therebetween.

[0050] The release head 2 is located in the receiving groove 13 and can slide along the length direction of the connecting block 1, and one end of the release head 2 penetrates through the opening 121 and is connected with the plug spring 40.

[0051] The radial width of the release head 2 is less than or equal to the radial width of the connecting block 1, so as to avoid secondary damage to the blood vessel. When the release structure main body 10 is located in the delivery catheter 20, the lumen of the delivery catheter 20 limits the radial freedom of the connecting block 1 and the release head 2, and the blocking portion 12 limits the release head 2 in the receiving groove 13. Since the axial length of the receiving groove 13 is greater than the axial length of the release head 2, the release head 2 can move along the length direction of the connecting block 1 in the receiving groove 13. When the plug spring is completely pushed out of the delivery catheter 20, the release structure main body 10 is located outside the delivery catheter 20, and the delivery catheter 20 no longer limits the release head 2. Under the torsion of the plug spring, the release head 2 can be separated from the receiving groove 13.

[0052] As shown in Figure 4 , when the plug spring is twisted downward of the release head 2, the connection between the plug spring and the release head 2 will drive the release head 2 to swing. Since the axial length of the receiving groove 13 is greater than that of the release head 2, the release head 2 can quickly separate from the receiving groove 13 when swinging.

[0053] As shown in Figure 5 , when the plug spring is twisted upward of the release head 2, the connection between the plug spring and the release head 2 will drive the release head 2 to swing in the other direction. Since the axial length of the receiving groove 13 is greater than that of the release head 2, the release head 2 can quickly separate from the receiving groove 13 when swinging.

[0054] The extension direction of the opening 121 can be the height direction of the receiving groove 13, so that the end of the plug spring can only be twisted upward or downward of the release head 2 when the plug spring is twisted, and the large opening of the receiving groove 13 is more easily separated from the release head 2.

[0055] The embolism spring releasing structure provided by the embodiment comprises a connecting block 1 and a releasing head 2, wherein the connecting block 1 is provided with a receiving groove 13, and the releasing head 2 is arranged in the receiving groove 13. When the releasing structure body 10 is located in the delivery catheter 20, the delivery catheter 20 can limit the releasing head 2 in the receiving groove 13. When the releasing structure body 10 is located outside the delivery catheter 20, the delivery catheter 20 no longer limits the releasing head 2, and the releasing head 2 can be separated from the receiving groove 13 under the torsion of the embolism spring. When the releasing structure body 10 is not pushed out of the delivery catheter 20, the embolism spring can be recycled, and the fault tolerance during operation is increased. The large opening of the receiving groove 13 makes the releasing head 2 easy to separate and not easy to be adsorbed by viscous blood.

[0056] Further, please refer to Figure 2 and Figure 3 , the releasing head 2 is located in the opening 121 and forms a connecting rod 21, and the connecting rod 21 connects the embolism spring 40.

[0057] The length of the connecting rod 21 is relatively long, and when the embolism spring is twisted, the connecting rod 21 can swing in the opening 121, thereby driving the releasing head 2 to swing.

[0058] Further, please refer to Figure 3 , the connecting block 1 is a cylindrical structure, the receiving groove 13 is a groove body opened on the side wall of the cylindrical structure, and the two ends of the cylindrical structure form a connecting part 11 and a blocking part 12, respectively.

[0059] When the releasing head 2 is located in the receiving groove 13, it can be completely in the contour of the outer surface of the cylindrical structure, thereby facilitating the sliding of the connecting block 1 in the delivery catheter 20.

[0060] Further, please refer to Figure 3 , in the embodiment provided by the embodiment:

[0061] The depth of the groove body is greater than the radius of the cylindrical structure, and the groove body extends through the cylindrical structure in the radial direction.

[0062] Specifically, the groove body can be an opening cut in the radial direction of the connecting block 1, and the large opening of the receiving groove 13 can facilitate the separation of the releasing head 2 from the receiving groove 13.

[0063] Further, please refer to Figure 3 , in the embodiment provided by the embodiment:

[0064] The extension direction of the opening 121 is consistent with the depth direction of the receiving groove 13, so that the releasing head 2 can swing above or below the receiving groove 13 when the embolism spring is twisted.

[0065] The bottom of the opening 121 is flush with the bottom of the accommodating groove 13, so that the connecting rod 21 can abut against the bottom of the opening 121 as a fulcrum to support the disengagement head 2 to swing.

[0066] Further, the connecting rod 21 is transitionally fitted in the opening 121, so that the connecting rod 21 is not easy to return into the opening 121 when the connecting rod 21 swings out of the opening 121.

[0067] Further, please refer to Figure 9 In the embodiment 1 provided by the present embodiment, the side of the blocking part 12 close to the disengagement head 2 is a bevel, which is easy for the disengagement head 2 to swing out of the accommodating groove 13.

[0068] Please refer to Figure 10 In the embodiment 2 provided by the present embodiment, the side of the blocking part 12 close to the disengagement head 2 is an arc surface, which is easy for the disengagement head 2 to swing out of the accommodating groove 13.

[0069] Further, please refer to Figure 7 In the embodiment 3 provided by the present embodiment, the disengagement head 2 is a spherical type.

[0070] Please refer to Figure 8 In the embodiment 4 provided by the present embodiment, the disengagement head 2 is a cylindrical type.

[0071] Please refer to Figure 3 The disengagement head 2 can also be a cylindrical type with a cutting surface on one side, and the cutting surface and the cylindrical profile are adapted to the inner surface of the accommodating groove 13.

[0072] Further, please refer to Figure 11 and Figure 12 In the embodiment 5 provided by the present embodiment, the disengagement head 2 further comprises a suction assembly 3, and the suction assembly 3 comprises a suction surface 31 and a fiber tube 32.

[0073] The suction surface 31 is arranged in the accommodating groove 13, and the part of the disengagement head 2 close to the suction surface 31 is profiled to adapt to the suction surface 31.

[0074] The fiber tube 32 is adapted to flow of fluid medium, and one end of the fiber tube 32 is communicated with the suction surface 31 to form a suction port, and the other end of the fiber tube 32 is connected with a suction member.

[0075] The physiological saline can flow in the fiber tube 32, and when the release head 2 is placed, the physiological saline can be distributed on the adsorption surface 31 through the fiber tube 32. When the release head 2 is placed in the containing groove 13, the bottom surface of the release head 2 can completely cover the adsorption surface 31. The suction of the physiological saline in the fiber tube 32 is continuously provided, so that the release head 2 can be adsorbed in the containing groove 13. When the release head 2 needs to be released, the physiological saline in the fiber tube 32 is only needed to be discharged. In the processing of the connecting block 1, a flat groove can be first opened along the axial direction of the connecting block 1. The fiber tube 32 is embedded in the flat groove. After the end of the fiber tube 32 is fixed with the bottom of the containing groove 13, the gap between the end of the fiber tube 32 and the flat groove is filled, and the flat groove is filled and smoothed. The position of the end of the fiber tube 32 is the adsorption surface 31.

[0076] Further, please continue to refer to Figure 12 The containing groove 13 is provided with an adsorption groove 33. The opening side of the adsorption groove 33 forms the adsorption surface 31. The fiber tube 32 is communicated with the adsorption groove 33.

[0077] Before the release head 2 is placed, the physiological saline can be injected into the adsorption groove 33 through the fiber tube 32. After the release head 2 is placed, the suction of the physiological saline in the fiber tube 32 is provided, so that the release head 2 is adsorbed in the containing groove 13.

[0078] Please refer to Figure 13 In the embodiment provided in example 6, the blocking part 12 is a semicircular structure. The opening 121 is the upper half space of the semicircular structure. At this time, the position of the blocking part 12 abutting against the release head 2 is smaller. When the physiological saline in the fiber tube 32 is discharged, the release head 2 is facilitated to be separated from the containing groove 13.

[0079] Please refer to Figure 14 The suction and discharge part can be a needle tube 34. The elastic part 35 can be a spring between the piston handle of the needle tube 34 and the beaded edge of the syringe. After the physiological saline is injected, the spring can continuously push the piston handle to provide the suction of the physiological saline in the fiber tube 32. When the physiological saline in the fiber tube 32 needs to be discharged, the piston handle is only needed to be pressed.

[0080] Working principle:

[0081] Please refer to Figures 1 to 3When the release structure main body 10 is located in the delivery catheter 20, the inner cavity of the delivery catheter 20 limits the radial freedom of the connecting block 1 and the release head 2, and the blocking part 12 limits the release head 2 in the accommodating groove 13, and since the axial length of the accommodating groove 13 is greater than the axial length of the release head 2, the release head 2 can move along the length direction of the connecting block 1 in the accommodating groove 13; when the embolism spring is completely pushed out of the delivery catheter 20, the release structure main body 10 is located outside the delivery catheter 20, and the delivery catheter 20 no longer limits the release head 2, and the release head 2 can be released from the accommodating groove 13.

[0082] Please refer to Figure 11 and Figure 12 Before placing the release head 2, the physiological saline can be filled in the adsorption groove 33 through the fiber tube 32, and when the release head 2 is placed in the accommodating groove 13, the bottom surface of the release head 2 can completely cover the adsorption surface 31, and the suction force of the physiological saline in the fiber tube 32 is continuously provided, so that the release head 2 can be adsorbed in the accommodating groove 13; when it is needed to release the release head 2, only the physiological saline in the fiber tube 32 needs to be discharged.

[0083] It should be noted that in this document, the terms "comprising", "including", or any other variant thereof are intended to cover non-exclusive inclusions, so that processes, methods, articles or devices that include a series of elements not only include those elements, but also include other elements not explicitly listed, or inherent to such processes, methods, articles or devices.

[0084] The principles and implementation manners of the present application are described by using specific examples in this document, and the above description of the examples is only for helping to understand the method of the present application and its core idea. The above is only the preferred implementation manner of the present application, and it should be noted that due to the limitedness of the language expression, there are infinite specific structures, and for ordinary skilled persons in the technical field, some improvements, decorations or changes can be made without departing from the principles of the present application, and the above technical features can also be combined in an appropriate manner; these improvements, decorations, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the protection scope of the present application.

Claims

1. An embolic spring release structure, characterized by, The device comprises a release structure body (10) located in a delivery conduit (20), the release structure body (10) comprising: a connecting block (1) having one end connected to a push rod (30) to form a connecting part (11) and the other end forming a blocking part (12) provided with an opening (121), the connecting part (11) and the blocking part (12) forming a containing groove (13) therebetween; a release head (2) located in the containing groove (13) and slidable along the length direction of the connecting block (1), one end of the release head (2) penetrating through the opening (121) to connect a plug spring (40); a suction assembly (3) comprising: a suction surface (31) provided in the containing groove (13), the release head (2) being partially profile-fitted to the suction surface (31) relative to the suction surface (31); a fiber tube (32) adapted for fluid medium flow, one end of the fiber tube (32) being communicated with the suction surface (31) to form a suction port, and the other end being connected with a suction member; wherein: the release head (2) is partially formed with a connecting rod (21) in the opening (121), the connecting rod (21) connecting the plug spring (40); the extension direction of the opening (121) is consistent with the depth direction of the containing groove (13), the bottom of the opening (121) is flush with the bottom of the containing groove (13), and the connecting rod (21) is transitionally fitted to the opening (121); the containing groove (13) is provided with a suction groove (33), one side of the groove opening of the suction groove (33) forming the suction surface (31), and the fiber tube (32) being communicated with the suction groove (33).

2. The bail spring trip structure of claim 1 wherein, The connecting block (1) is in a cylindrical structure, the containing groove (13) is a groove body provided on the sidewall of the cylindrical structure, and the connecting part (11) and the blocking part (12) are respectively formed at the two ends of the cylindrical structure.

3. The plug spring release structure according to claim 2, wherein: the depth of the groove body is greater than the radius of the cylindrical structure; the groove body extends through the cylindrical structure in the radial direction.

4. The bail spring trip structure of claim 1 wherein, The blocking part (12) is a bevel or arc surface adjacent to one side of the release head (2).

5. The bail spring trip structure of claim 1 wherein, The release head (2) is in a spherical shape, a cylindrical shape, or a cylindrical shape provided with a cutting surface on one side.

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