Embolism coil conveying device

Abstract

The utility model relates to the technical field of medical instruments, and discloses an embolism coil conveying device which comprises a release device, a pushing rod is connected to the inner wall of the release device in an inserted mode, a conductive wire adheres to the inner wall of the pushing rod, the right end of the conductive wire is sleeved with an anti-untwisting wire, the right side of the anti-untwisting wire is fixedly connected with an embolism coil body, and the embolism coil body is fixedly connected with the right side of the anti-untwisting wire. A limiting ring is arranged on the surface of the pushing rod in an attached mode. Through cooperation of the first U-shaped plate, the reset support, the second U-shaped plate, the rubber strip, the first strip-shaped hole and the second strip-shaped hole, the limiting ring can move on the pushing rod and can be fixed to the designated position, meanwhile, after the limiting ring is fixed to the pushing rod, the pushing distance of the pushing rod can be positioned through the limiting ring, and therefore the limiting ring can be used for limiting the pushing distance of the pushing rod. Furthermore, medical personnel with less experience can accurately push the embolism coil main body to a specified position through the limiting ring, so that the conveying difficulty of the embolism coil is reduced.

Description

Technical Field

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

[0002] The development of intravascular interventional therapy has provided new technologies for vascular embolization therapy, especially since the advent of embolization coils, which has greatly improved the safety and efficacy of vascular embolization therapy. Usually, the embolization coil is delivered to the expected location of the blood vessel and then released to complete the embolization, thereby forming a thrombus in the cavity and achieving the purpose of embolizing the blood vessel.

[0003] At present, the embolic coil delivery device is composed of a release device, a push rod, a conductive wire and an anti-untwisting wire, wherein the conductive wire is connected to the embolic coil by the anti-untwisting wire, and then the embolic coil is pushed to the affected area by the push rod, and after being pushed to the specified position, the conductive wire is separated from the embolic coil by electrolysis. For example, an embolic coil delivery device disclosed in Chinese patent publication number CN208725798U, however, since the pushing distance of the push rod is only controlled by the doctor's experience, the pushing accuracy is often low due to the doctor's lack of experience, which makes the delivery of the embolic coil more difficult. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings existing in the prior art, such as: at present, since the pushing distance of the pushing rod is only controlled by the doctor's experience, the pushing accuracy is often low due to the doctor's lack of experience, which makes the delivery of the embolic coil more difficult, and an embolic coil delivery device is proposed.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] The cam is secured to the bottom of the holder and has two cams, one for holding the holder and the other for holding the holder in place, wherein the cam is secured to the bottom of the holder and the other for holding the holder in place.

[0007] Preferably, the reset bracket includes a slip ring, the right side of the slip ring is fixedly connected to the left side of the first U-shaped plate, a pressing block is fitted on the inner wall of the slip ring, the right side of the pressing block is fixedly connected to a spring, the right side of the spring and the right side of the first U-shaped plate are fixedly connected to a connecting plate, the front and rear sides of the pressing block are fixedly connected to a cylinder, the inner wall of the first strip hole and the inner wall of the second strip hole are in contact with the surface of the cylinder, the front and rear sides of the pressing block are in contact with the inner wall of the second U-shaped plate, and the left and right sides of the second U-shaped plate are in contact with the right side of the slip ring and the left side of the connecting plate respectively.

[0008] Preferably, the first strip-shaped hole is parallel to the horizontal plane, and the angle between the second strip-shaped hole and the horizontal plane is 45°.

[0009] Preferably, a third U-shaped plate is fixedly connected to the upper and lower sides of the release device, a first magnetic block is fixedly connected to the right side of the inner wall of the third U-shaped plate, a second magnetic block is fitted on the left side of the first magnetic block, an elliptical plate is fixedly connected to the left side of the second magnetic block, a cylinder is fixedly connected to the inner wall of the elliptical plate, a retaining ring is fitted on the left and right sides of the cylinder, the inner wall of the retaining ring is fixedly connected to the surface of the push rod, and the surface of the push rod is in contact with the inner wall of the cylinder.

[0010] Preferably, the left side of the first magnetic block is an N pole, and the right side of the second magnetic block is an S pole.

[0011] Preferably, the number of the third U-shaped plates is two, and the distance between the two third U-shaped plates is greater than the minor axis length of the elliptical plate.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] (1) The utility model cooperates with the first U-shaped plate, the reset bracket, the second U-shaped plate, the rubber strip, the first strip hole and the second strip hole, so that the limit ring can not only move on the push rod, but also fix the limit ring at a specified position. At the same time, when the limit ring is fixed on the push rod, the push distance of the push rod can be positioned by the limit ring, and then the limit ring allows less experienced medical personnel to accurately push the embolization coil body to the specified position, thereby reducing the difficulty of transporting the embolization coil.

[0014] (2) The utility model provides a third U-shaped plate, a first magnetic block, a second magnetic block, an elliptical plate, a cylinder and a retaining ring, wherein when the first magnetic block contacts the second magnetic block, the elliptical plate is fixed in the third U-shaped plate by the mutual attraction between the first magnetic block and the second magnetic block, and the third U-shaped plate and the elliptical plate cooperate to make the releaser and the push rod inseparable, thereby making it difficult for the releaser and the push rod to loosen, thereby preventing poor contact between the conductive wire and the releaser due to loosening of the releaser and the push rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 It is a front view of the structure of the utility model;

[0017] Figure 3 for Figure 2 Sectional view at AA;

[0018] Figure 4 It is a schematic diagram of the coordination of the conductive wire, the anti-untwisting wire and the embolization coil body in the utility model;

[0019] Figure 5 It is a front view of the first U-shaped plate in the utility model;

[0020] Figure 6 It is a front view of the resetting bracket in the utility model;

[0021] Figure 7 It is a front view of the second U-shaped plate in the utility model;

[0022] Figure 8 It is a right side view of the elliptical plate in the utility model.

[0023] In the figure: 1. release device; 2. push rod; 3. conductive wire; 4. anti-untwisting wire; 5. embolization coil body; 6. limit ring; 7. connecting column; 8. first U-shaped plate; 9. reset bracket; 91. slip ring; 92. pressing block; 93. spring; 94. connecting plate; 95. cylinder; 10. second U-shaped plate; 11. rubber strip; 12. first strip hole; 13. second strip hole; 14. third U-shaped plate; 15. first magnetic block; 16. second magnetic block; 17. elliptical plate; 18. cylinder; 19. retaining ring. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0025] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0026] Embodiment 1:

[0027] Reference Figure 1-7 , an embolic coil delivery device, comprising a releaser 1, a push rod 2 is inserted into the inner wall of the releaser 1, a conductive wire 3 is bonded to the inner wall of the push rod 2, an anti-untwisting wire 4 is sleeved on the right end of the conductive wire 3, an embolic coil body 5 is fixedly connected to the right side of the anti-untwisting wire 4, the embolic coil body 5 and the conductive wire 3 are connected together through the anti-untwisting wire 4, a limiting ring 6 is fitted on the surface of the push rod 2, a connecting column 7 is fixedly connected to the left side of the limiting ring 6, a first U-shaped plate 8 is fixedly connected to the left side of the connecting column 7, the inner wall of the first U-shaped plate 8 contacts the surface of the push rod 2, the first U-shaped plate 8 and the limiting ring 6 are connected together through the connecting column 7, and the limiting ring 6 and the first U-shaped plate 8 can slide on the push rod 2, and the left and right sides of the first U-shaped plate 8 are fixedly connected to a reset bracket 9, the surface of the reset bracket 9 A second U-shaped plate 10 is fitted on the surface and the inner wall of the first U-shaped plate 8, and a rubber strip 11 is bonded to the bottom of the second U-shaped plate 10, and the bottom of the rubber strip 11 contacts the upper surface of the push rod 2. When the rubber strip 11 is in close contact with the push rod 2, the friction between the rubber strip 11 and the push rod 2 can prevent the limit ring 6 from moving on the push rod 2. When the rubber strip 11 is separated from the push rod 2, the limit ring 6 can slide on the push rod 2. A first strip hole 12 is provided on the front and rear sides of the first U-shaped plate 8, and a second strip hole 13 is provided on the front and rear sides of the second U-shaped plate 10. The inner wall of the first strip hole 12 and the inner wall of the second strip hole 13 are in contact with the surface of the reset bracket 9, the first strip hole 12 is parallel to the horizontal plane, and the angle between the second strip hole 13 and the horizontal plane is 45°.

[0028] The reset bracket 9 includes a slip ring 91, the right side of the slip ring 91 is fixedly connected to the left side of the first U-shaped plate 8, a pressing block 92 is fitted on the inner wall of the slip ring 91, and the pressing block 92 can only move left and right through the slip ring 91, and a spring 93 is fixedly connected to the right side of the pressing block 92, and a connecting plate 94 is fixedly connected to the right side of the spring 93 and the right side of the first U-shaped plate 8, and the pressing block 92 can only be supported by the spring 93, and the front and rear sides of the pressing block 92 are fixedly connected with a cylinder 95, and the inner wall of the first strip hole 12 and the inner wall of the second strip hole 13 are in contact with the surface of the cylinder 95, and the cylinder 95 can move left and right in the first strip hole 12. When the cylinder 95 moves left and right in the first strip hole 12, the second U-shaped plate 10 can move up and down through the cooperation of the cylinder 95 and the second strip hole 13, and the front and rear sides of the pressing block 92 are both in contact with the first strip hole 12 and the second strip hole 13. The inner walls of the two U-shaped plates 10 are in contact, and the left and right sides of the second U-shaped plate 10 are in contact with the right side of the slip ring 91 and the left side of the connecting plate 94 respectively. Through the cooperation of the slip ring 91 and the connecting plate 94, the second U-shaped plate 10 can only move up and down in the first U-shaped plate 8. When the medical staff presses the pressing block 92 to reduce the distance between the pressing block 92 and the connecting plate 94, the second U-shaped plate 10 moves upward through the cooperation of the cylinder 95, the first strip hole 12 and the second strip hole 13, and the rubber strip 11 is separated from the push rod 2. When the medical staff releases the pressing block 92, the pressing block 92 is pushed to the left by the spring 93, and the second U-shaped plate 10 moves downward through the cooperation of the cylinder 95, the first strip hole 12 and the second strip hole 13, and the rubber strip 11 is in close contact with the push rod 2.

[0029] Embodiment 2:

[0030] Reference Figure 1-8The upper and lower sides of the releaser 1 are fixedly connected with a third U-shaped plate 14, the right side of the inner wall of the third U-shaped plate 14 is fixedly connected with a first magnetic block 15, the left side of the first magnetic block 15 is fitted with a second magnetic block 16, the left side of the first magnetic block 15 is an N pole, the right side of the second magnetic block 16 is an S pole, the left side of the second magnetic block 16 is fixedly connected with an elliptical plate 17, the inner wall of the elliptical plate 17 is fixedly connected with a cylinder 18, and the left and right sides of the cylinder 18 are fitted with a retaining ring 19, the inner wall of the retaining ring 19 is fixedly connected to the surface of the push rod 2, and the surface of the push rod 2 is in contact with the inner wall of the cylinder 18. The number of the third U-shaped plates 14 is two, and the two third U-shaped plates 14 is greater than the minor axis length of the elliptical plate 17. When the first magnetic block 15 contacts the second magnetic block 16, the elliptical plate 17 is fixed in the third U-shaped plate 14 through the mutual attraction between the first magnetic block 15 and the second magnetic block 16, and the cooperation between the third U-shaped plate 14 and the elliptical plate 17 makes it impossible to separate the releaser 1 and the push rod 2, and further makes it difficult for the releaser 1 and the push rod 2 to loosen, thereby preventing the poor contact between the conductive wire 3 and the releaser 1 due to the loosening of the releaser 1 and the push rod 2. When the elliptical plate 17 rotates 90°, the elliptical plate 17 is staggered with the third U-shaped plate 14, and the releaser 1 can be separated from the push rod 2.

[0031] In the present utility model, when the medical staff uses the conveying device, they first adjust the position of the limit ring 6 according to the pushing distance. When adjusting the position of the limit ring 6, they first press the pressing block 92 to reduce the distance between the pressing block 92 and the connecting plate 94, and move the second U-shaped plate 10 upward through the cooperation of the cylinder 95, the first strip hole 12 and the second strip hole 13. At this time, the rubber strip 11 is separated from the pushing rod 2, and the limit ring 6 can move on the pushing rod 2. Then, the limit ring 6 is moved to the specified position, and the pressing block 92 is released. The pushing force of the spring 93 on the pressing block 92 makes the pressing block 92 move to the left, and through the cylinder 95, the first strip hole 12 and the second strip hole 13, the second U-shaped plate 10 moves upward. 3, the second U-shaped plate 10 moves downward, and the rubber strip 11 is in close contact with the push rod 2. At this time, the limit ring 6 is fixed at the specified position through the friction between the rubber strip 11 and the push rod 2, and then the conductive wire 3 is connected to the embolic coil body 5 through the anti-untwisting wire 4, and the push rod 2 pushes the embolic coil body 5 into the patient's body. When the limit ring 6 contacts the patient, the push rod 2 cannot continue to move through the limit ring 6, and the embolic coil body 5 stops at the specified position. Then, the conductive wire 3 is powered by the releaser 1, and the electrolysis part of the conductive wire 3 is disconnected by electrolysis. At this time, the embolic coil body 5 can be implanted into the patient's body.

[0032] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

[0033] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

Claims

1. An embolic coil delivery device, comprising a release device (1), characterized in that: A push rod (2) is inserted into the inner wall of the release device (1), a conductive wire (3) is bonded to the inner wall of the push rod (2), an anti-untwisting wire (4) is sleeved on the right end of the conductive wire (3), an embolization coil body (5) is fixedly connected to the right side of the anti-untwisting wire (4), a limit ring (6) is fitted on the surface of the push rod (2), a connecting column (7) is fixedly connected to the left side of the limit ring (6), a first U-shaped plate (8) is fixedly connected to the left side of the connecting column (7), the inner wall of the first U-shaped plate (8) is in contact with the surface of the push rod (2), and both left and right sides of the first U-shaped plate (8) are A reset bracket (9) is fixedly connected, and a second U-shaped plate (10) is fitted on the surface of the reset bracket (9) and the inner wall of the first U-shaped plate (8), a rubber strip (11) is bonded to the bottom of the second U-shaped plate (10), and the bottom of the rubber strip (11) contacts the upper surface of the push rod (2), and first strip holes (12) are provided on both the front and rear sides of the first U-shaped plate (8), and second strip holes (13) are provided on both the front and rear sides of the second U-shaped plate (10), and the inner wall of the first strip hole (12) and the inner wall of the second strip hole (13) are both in contact with the surface of the reset bracket (9).

2. An embolic coil delivery device according to claim 1, characterized in that: The reset bracket (9) comprises a slip ring (91), the right side of the slip ring (91) is fixedly connected to the left side of the first U-shaped plate (8), a pressing block (92) is fitted on the inner wall of the slip ring (91), the right side of the pressing block (92) is fixedly connected to a spring (93), the right side of the spring (93) and the right side of the first U-shaped plate (8) are both fixedly connected to a connecting plate (94), the front and rear sides of the pressing block (92) are both fixedly connected to a cylinder (95), the inner wall of the first strip hole (12) and the inner wall of the second strip hole (13) are both in contact with the surface of the cylinder (95), the front and rear sides of the pressing block (92) are both in contact with the inner wall of the second U-shaped plate (10), and the left and right sides of the second U-shaped plate (10) are respectively in contact with the right side of the slip ring (91) and the left side of the connecting plate (94).

3. The embolic coil delivery device according to claim 1, characterized in that: The first strip-shaped hole (12) is parallel to the horizontal plane, and the angle between the second strip-shaped hole (13) and the horizontal plane is 45°.

4. The embolic coil delivery device according to claim 1, characterized in that: The upper and lower sides of the release device (1) are fixedly connected to a third U-shaped plate (14); the right side of the inner wall of the third U-shaped plate (14) is fixedly connected to a first magnetic block (15); the left side of the first magnetic block (15) is fitted with a second magnetic block (16); the left side of the second magnetic block (16) is fixedly connected to an elliptical plate (17); the inner wall of the elliptical plate (17) is fixedly connected to a cylinder (18); the left and right sides of the cylinder (18) are fitted with retaining rings (19); the inner wall of the retaining ring (19) is fixedly connected to the surface of the push rod (2); and the surface of the push rod (2) contacts the inner wall of the cylinder (18).

5. An embolic coil delivery device according to claim 4, characterized in that: The left side of the first magnetic block (15) is an N pole, and the right side of the second magnetic block (16) is an S pole.

6. The embolic coil delivery device according to claim 4, characterized in that: The number of the third U-shaped plates (14) is two, and the distance between the two third U-shaped plates (14) is greater than the minor axis length of the elliptical plate (17).

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