A spring coil delivery system

Abstract

The invention relates to a spring coil delivery system, and relates to the technical field of medical devices. The spring coil delivery system comprises a delivery tube, a driving wire is arranged inside the delivery tube, the front end of the driving wire is connected to a guide wire, the guide wire outputs a spring coil, the delivery tube is extended into a blood vessel, the implantation positioning is determined to be accurate, and the spring coil is pushed to the blood vessel intervention position for filling, the two ends of the driving wire are respectively connected to the positive and negative poles of a power supply through a wire, the implantation positioning is determined to be accurate, the power supply is energized to form an electric circuit, the driving wire is energized to retract, the guide wire is pulled back, and the guide wire passes through a connection structure composed of a connection knot to realize the release of the spring coil, the operation method is simple and convenient, and local damage to the blood vessel caused by a direct fuse guide wire is prevented.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a spring coil delivery system. Background Art

[0002] Spring coils are mainly used in aneurysm interventional surgery. The spring coils are pushed into the aneurysm cavity through a delivery tube to block the influx of blood and achieve embolization of the aneurysm, reducing the probability of aneurysm rupture. The existing technology mainly uses electrolytic release to melt the guide wire connecting the catheter and the spring coil, thereby achieving the release of the spring coil. However, this method produces burns at the melting point when electricity is turned on, causing local damage to blood vessels in the human body. At the same time, there may be problems such as long current melting time and incomplete melting, resulting in residual electrolytic release and creating safety hazards. Summary of the invention

[0003] In order to improve the problems of spring coils in the above-mentioned background technology during the transportation process, the present invention provides a spring coil transportation system.

[0004] The present invention provides a spring coil delivery system that adopts the following technical solution:

[0005] A spring coil delivery system includes a delivery tube, wherein a driving wire is arranged inside the delivery tube, and the driving wire is made of nickel-titanium wire. The nickel-titanium wire has good corrosion resistance and can be used as a memory alloy; the front end of the driving wire is connected to a guide wire, and the guide wire outputs a spring coil, and the delivery tube pushes the spring coil to a blood vessel intervention position for filling; the two ends of the driving wire are respectively connected to the positive and negative poles of a power supply through wires, and the power supply is energized to form an electrical circuit, and the driving wire is energized to retract; a connecting knot 1 is arranged at the rear end of the spring coil, and a connecting knot 2 is arranged at the front end of the delivery tube, and a set of the connecting knot is arranged in the connecting knot 2 and a guide wire is passed through it, and the front end of the guide wire extends into the interior of the spring coil, and the guide wire is withdrawn to release the spring coil.

[0006] Preferably, a developing spring is fixedly provided on the inner side of the front section of the conveying tube, the wire passes through the inner side of the developing spring, the developing spring serves to fix the wire, the outer surface of the wire is covered with an insulating layer, and an insulator is provided on the rear end of the conveying tube to separate the positive and negative poles of the power supply.

[0007] Preferably, the developing spring is wound with platinum wire.

[0008] In summary, the present invention has the following beneficial technical effects: the present invention arranges a driving wire inside the delivery tube, and the driving wire is connected to an external power supply and retracted when energized, so that the guide wire can be pulled back in a short time, and the guide wire is pulled out of the connecting structure composed of the connecting knot to realize the release of the spring coil, the operation time is short, the operation method is simple and convenient, and the local damage to the blood vessel caused by the direct melting of the guide wire is prevented, thereby reducing the surgical risk. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 is a schematic diagram of the installation of a spring coil delivery system according to an embodiment of the present invention;

[0010] Figure 2 yes Figure 1 A is an enlarged schematic diagram;

[0011] Figure 3 4 is a side sectional view of a delivery pipe according to an embodiment of the present invention.

[0012] Explanation of the reference numerals: 1. conveying tube; 2. driving wire; 3. guide wire; 4. spring coil; 5. conducting wire; 6. power supply; 7. connecting junction 1; 8. connecting junction 2; 9. insulating layer; 10. insulator; 11. developing spring; 12. heat shrink tube. DETAILED DESCRIPTION

[0013] The following combination Figure 1-Figure 3 The present invention is described in further detail.

[0014] The embodiment of the present invention discloses a spring coil delivery system.

[0015] Reference Figure 1 , Figure 2 , Figure 3 A spring coil delivery system comprises a delivery tube 1, a space for accommodating a spring coil 4 is reserved at the front end of the delivery tube 1, a driving wire 2 is arranged inside the delivery tube 1, the driving wire 2 is made of nickel-titanium wire, the nickel-titanium wire is a memory alloy nickel-titanium wire of a specific shape, and contracts when powered on, the front end of the driving wire 2 is connected to a guide wire 3, the guide wire 3 outputs the spring coil 4 and a margin for pushing and pulling back the spring coil 4 is reserved on the guide wire 3, the delivery tube 1 is extended into the blood vessel, the implantation positioning is determined to be accurate, and the spring coil 4 is pushed to the blood vessel intervention position for filling; the implantation positioning is determined by the position of the developing spring 11 Whether the position is accurate; when the spring coil 4 is implanted and positioned inaccurately, the spring coil 4 is pulled back and re-implanted; the two ends of the driving wire 2 are respectively connected to the positive and negative electrodes of the power supply 6 through the wire 5, the power supply 6 is energized to form an electrical circuit, and the driving wire 2 is energized to retract, and the retraction of the driving wire 2 is carried out in the delivery tube 1; when the guide wire 3 is directly melted, the front section of the guide wire 3 remains at the vascular intervention position, causing puncture damage to the vascular wall, and a sharp residue may be formed at the melting point of the guide wire 3, causing local damage to the blood vessel. By energizing and retracting the driving wire 2, the guide wire 3 can be directly pulled out, reducing the risk of the operation.

[0016] Reference Figure 1 , Figure 2A connecting knot 7 is provided at the rear end of the spring coil 4, and a closed loop structure is usually formed at the rear end of the spring coil 4, which serves as the connecting knot 7; a connecting knot 2 is provided at the front end of the delivery tube 1, and the connecting knot 7 is sleeved in the connecting knot 2 8 and is penetrated by a guide wire 3 to form a simple connecting structure, and the front end of the guide wire 3 extends into the interior of the spring coil 4, and the guide wire 3 is withdrawn, and the spring coil 4 is released; when the guide wire 3 is withdrawn, the guide wire 3 is pulled out from the connecting structure composed of the connecting knot 1 7 and the connecting knot 2 8, the connecting knot 1 7 and the connecting knot 2 8 are separated, and the spring coil 4 is released.

[0017] Reference Figure 1 , Figure 3 The side wall of the front section of the delivery tube 1 is cut, the cutting amount increases near the front end of the delivery tube 1, and the bending degree gradually increases to form a gradual softness, which is convenient for entering the human blood vessels. A heat shrink tube 12 is set outside the cutting position of the front section of the delivery tube 1 to prevent blood and tissue fluid from entering the delivery tube 1.

[0018] Reference Figure 1 , Figure 3 The wire 5 is attached to the inner wall of the conveying pipe 1 and the outer side of the wire 5 is covered with an insulating layer 9 to prevent the wire from being entangled and short-circuited. An insulator 10 is provided at the rear end of the conveying pipe 1 to separate the positive and negative poles of the power supply 6.

[0019] Reference Figure 1 , Figure 3 A developing spring 11 is fixedly arranged on the inner side of the front section of the conveying tube 1, and the wire 5 passes through the inner side of the developing spring 11. The developing spring 11 serves to fix the wire 5. The outer surface of the wire 5 is covered with an insulating layer 9. An insulator 10 is arranged on the rear end of the conveying tube 1 to separate the positive and negative poles of the power supply 6.

[0020] Reference Figure 1 The developing spring 11 is wound with platinum wire. When the delivery tube 1 is inserted into the blood vessel, it is positioned by the developing spring 11. During the operation, the delivery tube 1 is transported while imaging is performed. The developing spring 11 cannot penetrate and mark the position, thereby marking the delivery position of the delivery tube 1. The operator operates the delivery tube 1 to transport it to the vascular intervention position.

[0021] The implementation principle of a spring coil delivery system in an embodiment of the present invention is as follows: a driving wire 2 and a guide wire 3 are arranged inside a delivery tube 1, a space for accommodating a spring coil 4 is reserved at the front end of the delivery tube 1, the delivery tube 1 is inserted into a blood vessel and the spring coil 4 is pushed to a blood vessel intervention position, a power source 6 is energized to form an electrical circuit, the driving wire 2 is energized and retracted, driving the guide wire 3 to withdraw, and the spring coil 4 is released.

[0022] The above are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A spring coil delivery system, characterized in that: The invention comprises a delivery tube (1), wherein a driving wire (2) is arranged inside the delivery tube (1), the driving wire (2) is made of nickel-titanium wire, the front end of the driving wire (2) is connected to a guide wire (3), the guide wire (3) outputs a spring coil (4), and the delivery tube (1) pushes the spring coil (4) to the intervention position of the blood vessel for packing; the two ends of the driving wire (2) are respectively connected to the positive and negative electrodes of a power source (6) through a wire (5), the power source (6) is energized to form an electrical circuit, and the driving wire (2) is energized to retract; The rear end of the spring coil (4) is provided with a first connection knot (7), the front end of the delivery tube (1) is provided with a second connection knot (8), the first connection knot (7) is sleeved inside the second connection knot (8) and is penetrated by a guide wire (3), the front end of the guide wire (3) extends into the interior of the spring coil (4), the guide wire (3) is withdrawn, and the spring coil (4) is released.

2. A spring coil delivery system according to claim 1, characterized in that: A developing spring (11) is fixedly arranged on the inner side of the front section of the conveying tube (1), the conducting wire (5) passes through the inner side of the developing spring (11), the outer surface of the conducting wire (5) is covered with an insulating layer (9), and an insulator (10) is arranged at the rear end of the conveying tube (1) to separate the positive and negative poles of the power source (6).

3. A spring coil delivery system according to claim 2, characterized in that: The developing spring (11) is wound with platinum wire.

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