A delivery and release device for implants

Abstract

The present invention discloses a delivery and release device for implants, comprising a release device, a delivery system, a hot melt device, a welding block, and an implant arranged in sequence from near to far, and the delivery and release device also comprises a first wire and a second wire; the release device is connected to the delivery system, the delivery system is connected to the hot melt device, and the hot melt device is connected to the implant through the welding block. The release device of the present invention has a novel structure, is simple, has a low cost, has reliable implant positioning, is stable in release, has a fast fusing speed, and thus has a short release time and shortens the operation time, is convenient for doctors to operate, and ultimately reduces the pain of patients.

Description

Technical Field

[0001] The present invention relates to medical equipment, in particular to an implant delivery system and a release device. Background Art

[0002] Currently, the delivery devices used in interventional surgery are all inserted through percutaneous vascular puncture, enter the human body through a microcatheter, and return after the delivery object reaches the target location and completes the release mission.

[0003] The mainstream coil delivery devices currently on the market have many shortcomings. For example, electrolytic release devices usually have the following disadvantages:

[0004] The release time is long and unstable, usually 15-60s or even longer.

[0005] The operation is inconvenient, and the doctor needs to repeatedly plug and unplug wires to connect the constant current source and the human body.

[0006] The patient felt discomfort and there were wire clamps on his body.

[0007] The guide wire often kicks during delivery.

[0008] Mechanical release devices usually have the following disadvantages:

[0009] The production process is complicated, the cost is high, and the price is expensive.

[0010] The mainstream hot melt spring coil release devices currently on the market usually have the following disadvantages:

[0011] The process is complicated, the cost is high and the price is expensive.

[0012] The releaser near-end gives a false alarm or the alarm is inaccurate.

[0013] Get rid of unstable phenomena. Summary of the invention

[0014] The purpose of the present invention is to solve the deficiencies of the above-mentioned prior art and to provide a hot-melt spring coil release device which has a novel and simple structure, low cost, reliable implant positioning, stable release, and fast fusing speed, thereby shortening the release time and shortening the operation time, ultimately reducing the pain of the patient and being easy for the doctor to operate.

[0015] In order to solve the above technical problems, the present invention provides a delivery and release device for an implant, comprising a release device, a delivery system, a hot melt device, a welding block, and an implant, which are arranged in sequence from near to far, and the delivery and release device also includes a wire 1 and a wire 2; the release device is connected to the delivery system, the delivery system is connected to the hot melt device, and the hot melt device is connected to the implant through the welding block; the delivery system comprises a proximal handle tube, a proximal connecting tube, a hypotube, a hypotube insulation layer, a delivery spring coil, and a delivery guide wire; the proximal handle tube is connected to one electrode end of the release device, and the proximal connecting tube is connected to the other electrode end of the release device; the hypotube insulation layer is sleeved on the outer surface of the proximal end of the hypotube; the proximal handle tube and the proximal connecting tube are sleeved on the outer surface of the hypotube insulation layer at the proximal end of the hypotube in sequence; the front end of the delivery spring coil penetrates the hypotube The distal end of the wave tube; the head end of the wire 2 is welded to the outer surface of the end of the proximal handle tube, the part of the wire 2 extending toward the sea wave tube is welded to the end of the sea wave tube, and its end passes through the delivery spring coil to be connected with the end of the hot melt device, the end of the wire 1 passes through the sea wave tube to be connected with the front end of the hot melt device, the front end of the wire 1 extends out of the sea wave tube, the extension part is bent toward the direction of the proximal connecting tube and is welded to the outer surface of the terminal tube body of the proximal connecting tube; the hot melt device includes a waterproof tube, a hot melt spring coil, and a polymer medical line; the hot melt spring coil is arranged in the cavity of the waterproof tube, the polymer medical line passes through the hot melt spring coil and the end extends and is fixed inside the welding block, and the implant is fixed at the end of the welding block; the delivery guide wire passes through the inside of the sea wave tube to the end of the delivery spring coil, and the end of the delivery guide wire is connected to the polymer medical line. The insulating layer of the hypotube insulates the hypotube from the proximal connecting tube and the proximal handle tube; Wire 1 and Wire 2 are connected to the two electrodes of the release device through the proximal connecting tube and the proximal handle tube, so that Wire 1 and Wire 2 are electrically connected to the two electrodes of the release device; the softness of the delivery spring coil improves the situation where the delivery guidewire is too hard and the microcatheter is kicked out of the tumor cavity after the implant is released, thereby increasing the softness of the delivery system and improving the kicking phenomenon of the delivery guidewire; the waterproof tube enables the internal polymer medical wire to avoid interference from body fluids and be released safely and stably; the polymer medical wire shortens the release time, and it only takes about 1 second to release after power is turned on, which improves the surgical efficiency and facilitates the doctor's operation, while also alleviating the patient's pain. It has a simple structure and reduces production costs.

[0016] Preferably, the wire one and the wire two are respectively welded to two ends of the hot-melt spring coil.

[0017] Preferably, the front end of the waterproof tube is set to be open, the end is set to be closed, and a small hole allowing the polymer medical thread to pass through is provided at the center of the closed end.

[0018] Preferably, the implant is a spring coil.

[0019] Preferably, the length of the hot-melt spring coil is smaller than the length of the waterproof tube.

[0020] Preferably, the release device and the delivery system are integrated and fixedly connected. The integrated fixed connection is convenient for doctors to operate, and only one button is needed to control the switch, and there is no need to repeatedly match the circuit connection between the release device and the delivery device, which saves circuit costs, and the structure is simple and novel, saving manufacturing costs.

[0021] Preferably, the proximal end of the delivery guide wire is fixedly connected to the release device.

[0022] Preferably, a 0.5 mm gap is provided between the proximal connecting tube and the proximal handle tube. A gap is left between the proximal connecting tube and the proximal handle tube to prevent short circuit.

[0023] The release device of the present invention has novel and simple structure, low cost, reliable implant positioning, stable release, and fast fusing speed, thereby shortening the release time and operation time, facilitating the operation of doctors, and ultimately reducing the pain of patients. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall connection structure of the conveying and releasing device of the present invention.

[0025] Figure 2 It is a circuit connection schematic diagram of the conveying release device of the present invention.

[0026] In the figure, release device 1, delivery system 2, hot melt device 3, welding block 4, implant 5, wire one 6, wire two 7, proximal handle tube 8, proximal connecting tube 9, hypotube 10, hypotube insulation layer 11, delivery spring coil 12, delivery guide wire 13, waterproof tube 14, hot melt spring coil 15, polymer medical wire 16. DETAILED DESCRIPTION

[0027] The embolic coil delivery device and the method for preparing the same will be described in more detail below in conjunction with the schematic diagram, wherein preferred embodiments of the present invention are shown, and it should be understood that those skilled in the art may modify the present invention described herein while still achieving the advantageous effects of the present invention. Therefore, the following description should be understood as being broadly known to those skilled in the art and not as a limitation of the present invention.

[0028] The present invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become more apparent from the following description and claims. It should be noted that the drawings are in very simplified form and in non-precise proportions, and are only used to facilitate and clearly assist in illustrating the purpose of the embodiments of the present invention.

[0029] like Figure 1As shown, the delivery and release device 1 includes a release device 1, a delivery system 2, a hot melt device 3, a welding block 4, and an implant 5, which are arranged in sequence from near to far, wherein the release device 1 is connected to the delivery system 2, the delivery system 2 is connected to the hot melt device 3, and the hot melt device 3 is connected to the implant 5 through the welding block 4; the proximal handle tube 8 is connected to one electrode end of the release device 1, and the proximal connecting tube 9 is connected to the other electrode end of the release device 1; the sea wave tube insulation layer 11 is sleeved on the outer surface of the proximal end of the sea wave tube 10; the proximal handle tube 8 and the proximal connecting tube 9 are sequentially sleeved on the outer surface of the sea wave tube insulation layer 11 at the proximal end of the sea wave tube 10; a 0.5mm gap is provided between the proximal connecting tube and the proximal handle tube; the front end of the delivery spring coil 12 passes through the distal end of the sea wave tube 10; the head end portion of the wire 2 7 is welded to the outer surface of the end of the proximal handle tube 8, and the part of the wire 2 7 extending toward the sea wave tube 10 is welded to the end of the sea wave tube 10 The end of the wire 6 passes through the delivery spring coil 12 to be connected with the end of the hot-melt spring coil 15, the end of the wire 6 passes through the hypotube 10 to be connected with the front end of the hot-melt spring coil 15, the front end of the wire 6 extends out of the hypotube 10, the extended part is bent in the direction of the proximal connecting tube 9 and is welded to the outer surface of the terminal tube body of the proximal connecting tube 9; the hot-melt spring coil 15 is arranged in the cavity of the waterproof tube 14, the polymer medical line 16 passes through the hot-melt spring coil 15 and the end is extended and fixed in the inside of the welding block 4, and the implant 5 is fixed at the end of the welding block 4; the delivery guide wire 13 passes through the hypotube 10 to the end of the delivery spring coil 12, and the end of the delivery guide wire 13 is connected to the polymer medical line 16; the proximal end of the delivery guide wire 13 is fixedly connected to the release device 1; the front end of the waterproof tube 14 is set to be open, the end is set to be closed, and a small hole allowing the polymer medical line 16 to pass through is provided at the center of the closed end.

[0030] like Figure 2As shown, the release device 1 is fixed to the delivery system 2 by bonding, welding or other means; the proximal handle tube 8 of the delivery system 2 is connected to one electrode end of the release device 1, and the proximal connecting tube 9 is connected to the other electrode end of the release device 1; the hypotube insulating layer 11 is sleeved on the outer surface of the proximal end of the hypotube 10; the proximal handle tube 8 and the proximal connecting tube 9 are sequentially sleeved on the outer surface of the hypotube insulating layer 11 at the proximal end of the hypotube 10; the head end portion of the wire 2 7 is welded to the outer surface of the end of the proximal handle tube 8, and the part of the wire 2 7 extending toward the hypotube 10 is welded and connected to the end of the hypotube 10, Its end passes through the delivery spring coil 12 to be connected with the end of the hot-melt spring coil 15, and the end of the wire 16 passes through the hypotube 10 to be connected with the front end of the hot-melt spring coil 15. The front end of the wire 16 extends out of the hypotube 10, and the extended part is bent toward the direction of the proximal connecting tube 9 and is welded to the outer surface of the terminal tube body of the proximal connecting tube 9; the wire 16 and the wire 2 7 are electrically connected to the release device 1, through the hot-melt spring coil 15, the hot-melt spring coil 15 generates heat, and the implant 5 is connected to the delivery system 2 through the polymer medical wire 16, and the polymer medical wire 16 passes through the hot-melt spring coil 15.

[0031] During the operation, the microcatheter is delivered to the target aneurysm of the human body through percutaneous vascular puncture, so that the implant 5 of the delivery and release device inside the microcatheter is delivered to the appropriate position, and the release device 1 is started. The current passes through the wire 1 6 and the wire 2 7 and the hot-melt spring coil 15. The hot-melt spring coil 15 generates heat, and the heat is transferred to the polymer medical wire 16 in the coil. The polymer medical wire 16 breaks due to the heat. The release time is only about 1 second. Finally, the delivery system is withdrawn and the implant 5 remains in the target position.

[0032] The release device of the present invention has novel and simple structure, low cost, reliable implant positioning, stable release, and fast fusing speed, thereby shortening the release time and operation time, facilitating the operation of doctors, and ultimately reducing the pain of patients.

[0033] Those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A delivery and release device for an implant, comprising a release device, a delivery system, a hot melt device, a welding block, and an implant arranged in sequence from near to far, the delivery and release device also comprising a first wire and a second wire; the release device is connected to the delivery system, the delivery system is connected to the hot melt device, and the hot melt device is connected to the implant through the welding block; characterized in that: The delivery system includes a proximal handle tube, a proximal connecting tube, a hypotube, a hypotube insulating layer, a delivery spring coil, and a delivery guide wire; the proximal handle tube is connected to one electrode end of the release device, and the proximal connecting tube is connected to the other electrode end of the release device; the hypotube insulating layer is sleeved on the outer surface of the proximal end of the hypotube; the proximal handle tube and the proximal connecting tube are sequentially sleeved on the outer surface of the hypotube insulating layer at the proximal end of the hypotube; the front end of the delivery spring coil passes through the distal end of the hypotube; the head end of the wire 2 is welded to the outer surface of the end of the proximal handle tube, the part of the wire 2 extending toward the hypotube is welded and connected to the end of the hypotube, and its end passes through the delivery spring The end of the wire one passes through the hypotube and is connected to the front end of the hot-melt device. The front end of the wire one extends out of the hypotube, and the extension part is bent toward the direction of the proximal connecting tube and is welded and connected to the outer surface of the terminal tube body of the proximal connecting tube. The hot-melt device includes a waterproof tube, a hot-melt spring coil, and a polymer medical line. The hot-melt spring coil is arranged in the cavity of the waterproof tube, the polymer medical line passes through the hot-melt spring coil and the end extends and is fixed inside the welding block, and the implant is fixed at the end of the welding block. The delivery guide wire passes through the hypotube to the end of the delivery spring coil, and the end of the delivery guide wire is connected to the polymer medical line. The first and second conductors are respectively welded to two ends of the hot-melt spring coil; The front end of the waterproof tube is set to be open, the end is set to be closed, and a small hole is provided at the center of the closed end to allow the polymer medical line to pass through; The implant is a spring coil.

2. A delivery and release device for an implant according to claim 1, characterized in that: The length of the hot-melt spring ring is smaller than the length of the waterproof tube.

3. A delivery and release device for an implant according to claim 1, characterized in that: The release device and the conveying system are integrally fixedly connected.

4. A delivery and release device for an implant according to claim 1, characterized in that: The proximal end of the delivery guide wire is fixedly connected to the release device.

5. The implant delivery and release device according to claim 1, characterized in that: A gap of 0.5 mm is provided between the proximal connecting tube and the proximal handle tube.

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