Embolism coil conveying device

Abstract

The utility model discloses an embolism coil conveying device which comprises a conveying pipe, moving grooves are formed in the two sides of the inner wall of the conveying pipe in a sliding mode, a pushing rod is fixedly arranged between the two moving grooves, a connecting base is arranged at one end of the pushing rod in a clamped mode, and a placement base is fixedly connected to the end, away from the pushing rod, of the connecting base. According to the embolism coil conveying device, the plunger coil, the connecting block, the connecting base, the pushing rod and other structures are arranged in the conveying pipe to be conveyed, it is guaranteed that the two moving blocks move in the two moving grooves respectively till the placing base makes contact with the end of the auxiliary releasing part, and the plunger coil is placed in the placing base. And two extrusion blocks are extruded to be shrunk into two through holes, and two limiting elastic pieces are extruded, so that the two limiting elastic pieces are separated from two limiting grooves, a connecting block is popped out under the action of a supporting spring, and then the plunger coil is accurately conveyed.

Description

Technical Field

[0001] The utility model relates to the technical field of embolism coil delivery, in particular to an embolism coil delivery device. Background Art

[0002] The development of intravascular interventional treatment has provided new technology for the embolization treatment of intracranial or peripheral aneurysms, arteriovenous fistulas and arteriovenous malformations. Especially since the advent of embolic coils, the safety and efficacy of intravascular embolization treatment have been greatly improved, reaching or exceeding the effect of open surgery. Usually, the embolic coil is delivered to the expected position of the blood vessel and then released. The embolic coil remains in the blood vessel to form an immediate thrombus, achieving the purpose of embolization of the blood vessel. The embolic coils currently used mainly include mechanical release coils, electric heat melting release coils and electrolytic release coils. Among them, the most used are electrolytic release coils, mainly Boston Scientific's GDC and Target coils. In 1991, Guglielmi et al. first reported the use of GDC electrolytic release coils to embolize intracranial aneurysms. The GDC has a platinum coil at the distal end, which is connected to a stainless steel guide wire. The design of the embolic coil material can reach the tortuous and complex aneurysmal lesions of the cerebral arteries. The GDC electrolytically detachable coil is used to fill the aneurysm cavity through percutaneous vascular puncture and introduced into the aneurysm through a microcatheter. The part connected to the stainless steel guide wire is dissolved by electrolysis, and the embolic coil is detached and left in the aneurysm, thereby preventing blood from flowing into the aneurysm. However, the existing embolic coil delivery device is not convenient for smooth and accurate delivery of the embolic coil. At the same time, the electrolytic detachment method has the problem of long detachment time or low detachment rate, which in turn affects the treatment effect.

[0003] In order to solve the above problems, an embolization coil delivery device is proposed herein. Utility Model Content

[0004] The purpose of the utility model is to provide an embolic coil delivery device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an embolic coil delivery device, comprising a delivery tube, movable grooves are slidably provided on both sides of the inner wall of the delivery tube, a pushing rod is fixedly provided between the two movable grooves, a connecting seat is clamped at one end of the pushing rod, a placement seat is fixedly connected to the connecting seat at one end away from the pushing rod, a placement slot is provided on the side of the placement seat away from the connecting seat, a plurality of supporting springs are fixedly provided on the inner side of the placement slot, a connecting block is inserted inside the placement slot, an embolic coil is fixedly connected to one end of the connecting block, mounting slots are provided on both sides of the connecting block, limiting spring sheets are fixedly connected to the insides of the two mounting slots, limiting slots are provided on both sides of the inner wall of the placement slot, through holes are provided in the middle parts of the inner sides of the two limiting slots, and extrusion blocks are inserted inside the two through holes.

[0006] The plunger coil, connecting block, connecting seat, pushing rod and other structures are placed in the conveying tube for conveying, and the two moving blocks are ensured to move in the two moving grooves respectively until the placement seat contacts the end of the auxiliary release part, so that the two extrusion blocks are squeezed and contracted into the two through holes, and the two limiting spring sheets are squeezed, so that the two limiting spring sheets are separated from the two limiting grooves, so that the connecting block pops out under the action of the supporting spring, and then the plunger coil is accurately conveyed.

[0007] Preferably, an auxiliary releasing part is fixedly provided at one end of the conveying pipe, and auxiliary inclined grooves are opened on the outer sides of the two extrusion blocks, and the two auxiliary inclined grooves are arranged corresponding to the auxiliary releasing part. The setting of the two auxiliary inclined grooves enables the two extrusion blocks to shrink into the two through holes under the action of the auxiliary releasing part.

[0008] Preferably, both sides of the inner wall of the through hole are provided with sliding grooves, and sliders are slidably arranged inside the two sliding grooves. The two sliders are respectively fixedly connected to the two extrusion blocks. The coordinated arrangement of the two sliding grooves and the two sliders can facilitate the stable up and down movement of the two extrusion blocks.

[0009] Preferably, a moving groove is provided at the connection between the conveying pipe and the two moving blocks, and the two moving blocks are respectively slidably connected to the two moving grooves, which can ensure the stable movement of the pushing rod.

[0010] Preferably, fixing bolts are threadedly provided on both sides of the connecting seat, and threaded holes are opened on both sides of the pushing rod. The two fixing bolts are threadedly connected to the two threaded holes respectively. The push rod is conveniently connected and fixed to the connecting seat by threading the two fixing bolts to the two threaded holes respectively.

[0011] Preferably, the two limiting spring pieces are respectively engaged with the two limiting grooves, and the connection block can be easily limited by the two limiting spring pieces being respectively engaged with the two limiting grooves.

[0012] Preferably, the connecting block is arranged corresponding to a plurality of supporting springs.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The plunger coil, connecting block, connecting seat, pushing rod and other structures are placed in the conveying tube for conveying, and the two moving blocks are ensured to move in the two moving grooves respectively until the placement seat contacts the end of the auxiliary release part, so that the two extrusion blocks are squeezed and contracted into the two through holes, and the two limiting springs are squeezed, so that the two limiting springs are separated from the two limiting grooves, so that the connecting block is ejected under the action of several supporting springs, and the plunger coil is accurately conveyed. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional diagram of the utility model;

[0016] Figure 2 It is a front cross-sectional view of the utility model;

[0017] Figure 3 It is an enlarged view of part A of the utility model;

[0018] Figure 4 It is an enlarged view of part B of the utility model.

[0019] In the figure: 1. conveying pipe; 2. moving groove; 3. moving block; 4. pushing rod; 5. auxiliary releasing part; 6. connecting seat; 7. mounting seat; 8. connecting block; 9. embolization coil; 10. mounting groove; 11. supporting spring; 12. mounting groove; 13. limiting spring; 14. limiting groove; 15. through hole; 16. extrusion block; 17. auxiliary inclined groove; 18. slide groove; 19. slider; 20. fixing bolt; 21. threaded hole. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0021] See also Figure 1-4The utility model provides an embolic coil delivery device, including a delivery tube 1, both sides of the inner wall of the delivery tube 1 are slidably provided with movable grooves 2, a pushing rod 4 is fixedly provided between the two movable grooves 2, one end of the pushing rod 4 is provided with a connecting seat 6, one end of the connecting seat 6 away from the pushing rod 4 is fixedly connected with a placement seat 7, a side of the placement seat 7 away from the connecting seat 6 is provided with a placement groove 10, a plurality of supporting springs 11 are fixedly provided on the inner side of the placement groove 10, a connecting block 8 is inserted inside the placement groove 10, one end of the connecting block 8 is fixedly connected with an embolic coil 9, both sides of the connecting block 8 are provided with mounting grooves 12, the insides of the two mounting grooves 12 are fixedly connected with limiting spring pieces 13, the placement groove 10 Limiting grooves 14 are provided on both sides of the inner wall, and through holes 15 are provided in the middle of the inner sides of the two limiting grooves 14. Extrusion blocks 16 are inserted and connected inside the two through holes 15. The plunger coil 9, connecting block 8, connecting seat 6, push rod 4 and other structures are placed in the conveying tube 1 for conveying, and the two moving blocks 3 are ensured to move in the two moving grooves 2 respectively until the placement seat 7 contacts the end of the auxiliary release part 5, so that the two extrusion blocks 16 are squeezed and contracted into the two through holes 15, and the two limiting spring sheets 13 are squeezed, so that the two limiting spring sheets 13 are separated from the two limiting grooves 14, so that the connecting block 8 is ejected under the action of a number of supporting springs 11, and the plunger coil 9 is accurately conveyed.

[0022] When in use, an auxiliary release portion 5 is fixedly provided at one end of the delivery tube 1, auxiliary chute 17 is provided on the outer sides of the two extrusion blocks 16, and the two auxiliary chute 17 is provided corresponding to the auxiliary release portion 5, and slide grooves 18 are provided on both sides of the inner wall of the through hole 15, and sliders 19 are slidably provided inside the two slide grooves 18, and the two sliders 19 are fixedly connected to the two extrusion blocks 16 respectively, and the connection between the delivery tube 1 and the two moving blocks 3 is provided with moving grooves 2, and the two moving blocks 3 are slidably connected to the two moving grooves 2 respectively;

[0023] The arrangement of the two auxiliary inclined grooves 17 enables the two extrusion blocks 16 to retract into the two through holes 15 under the action of the auxiliary release portion 5, and the coordinated arrangement of the two slide grooves 18 and the two sliders 19 facilitates the stable up and down movement of the two extrusion blocks 16.

[0024] When in use, both sides of the connection seat 6 are threadedly provided with fixing bolts 20, both sides of the push rod 4 are provided with threaded holes 21, the two fixing bolts 20 are respectively threadedly connected with the two threaded holes 21, the two limiting springs 13 are respectively engaged with the two limiting grooves 14, and the connection block 8 is correspondingly provided with a plurality of supporting springs 11;

[0025] The connection block 8 can be limited by the two limiting spring pieces 13 respectively engaging with the two limiting grooves 14 , and the push rod 4 can be connected and fixed to the connection seat 6 by the two fixing bolts 20 respectively threadedly fixing with the two threaded holes 21 .

[0026] When the embodiment of the present application is in use: by placing the plunger coil 9, connecting block 8, connecting seat 6 and pushing rod 4 and other structures in the conveying tube 1 for conveying, and ensuring that the two moving blocks 3 move in the two moving grooves 2 respectively, until the placement seat 7 contacts the end of the auxiliary release part 5, so that the two extrusion blocks 16 are squeezed and contracted into the two through holes 15, and the two limiting springs 13 are squeezed, so that the two limiting springs 13 are separated from the two limiting grooves 14, so that the connecting block 8 is popped out under the action of a number of supporting springs 11, and then the plunger coil 9 is accurately conveyed, wherein, the two limiting springs 13 are respectively engaged with the two limiting grooves 14 to facilitate the limiting of the connecting block 8, and the two fixing bolts 20 are respectively fixed to the two threaded holes 21 to facilitate the connection and fixation of the pushing rod 4 to the connecting seat 6.

[0027] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. An embolic coil delivery device, comprising a delivery tube (1), characterized in that: Both sides of the inner wall of the conveying pipe (1) are slidably provided with movable grooves (2), a push rod (4) is fixedly provided between the two movable grooves (2), one end of the push rod (4) is provided with a connecting seat (6) in a snap-fitting manner, the end of the connecting seat (6) away from the push rod (4) is fixedly connected to a placement seat (7), a placement groove (10) is provided on the side of the placement seat (7) away from the connecting seat (6), a plurality of supporting springs (11) are fixedly provided on the inner side of the placement groove (10), and the placement groove (10) is provided with a plurality of supporting springs (11) on the inner side of the placement groove (10). ) is interspersed with a connecting block (8), one end of the connecting block (8) is fixedly connected to an embolization coil (9), both sides of the connecting block (8) are provided with mounting grooves (12), the insides of the two mounting grooves (12) are fixedly connected with limiting spring sheets (13), both sides of the inner wall of the placement groove (10) are provided with limiting grooves (14), the middle parts of the inner sides of the two limiting grooves (14) are provided with through holes (15), and the insides of the two through holes (15) are interspersed with extrusion blocks (16).

2. An embolic coil delivery device according to claim 1, characterized in that: An auxiliary release portion (5) is fixedly provided at one end of the delivery pipe (1), and auxiliary inclined grooves (17) are provided on the outer sides of the two extrusion blocks (16), and the two auxiliary inclined grooves (17) are arranged corresponding to the auxiliary release portion (5).

3. An embolic coil delivery device according to claim 1, characterized in that: Slide grooves (18) are provided on both sides of the inner wall of the through hole (15), and sliders (19) are slidably provided inside the two slide grooves (18), and the two sliders (19) are fixedly connected to the two extrusion blocks (16) respectively.

4. The embolic coil delivery device according to claim 1, characterized in that: A moving groove (2) is provided at the connection between the conveying pipe (1) and the two moving blocks (3), and the two moving blocks (3) are respectively slidably connected to the two moving grooves (2).

5. The embolic coil delivery device according to claim 1, characterized in that: Both sides of the connection seat (6) are threadedly provided with fixing bolts (20), and both sides of the push rod (4) are provided with threaded holes (21), and the two fixing bolts (20) are respectively threadedly connected to the two threaded holes (21).

6. The embolic coil delivery device according to claim 1, characterized in that: The two limiting spring pieces (13) are respectively engaged and connected with the two limiting grooves (14).

7. The embolic coil delivery device according to claim 1, characterized in that: The connecting block (8) is arranged corresponding to a plurality of supporting springs (11).

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