Spring ring mechanical release system

Abstract

The invention discloses a mechanical release system for a spring ring, and relates to the technical field of medical engineering.The mechanical release system is characterized in that an insertion hole is formed in the far end of a push rod, the inner diameter of the insertion hole is set to be matched with the outer diameter of a connecting ring in a spring ring body, and a release wire with the outer diameter larger than the inner diameter of the connecting ring is inserted into the insertion hole in a sliding mode; the far end of the releasing wire is arranged to be of a conical structure, so that the device can be inserted into the connecting ring through the conical structure, the connecting ring is expanded outwards to be in interference fit with the inserting hole, firm connection between the spring ring body and the far end of the pushing rod is achieved, and then the conical structure is driven to retreat from the connecting ring through reverse movement of the releasing wire; efficient release of the spring ring body is achieved, operation is convenient and fast, the structure is simple, the conveying release cost of the spring ring body can be effectively reduced, the convenience and stability of related operation can be improved, and the efficiency of continuous implantation operation can be improved.

Description

Technical Field

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

[0002] The spring coil is a medical device used to treat aneurysms. During treatment, the spring coil needs to be delivered to the lesion site inside the aneurysm, and then the spring coil is released to stay at the lesion site to fill the aneurysm and prevent blood from entering the aneurysm, thereby achieving the treatment purpose of preventing aneurysm rupture. During actual operation, the spring coil needs to be connected to the delivery system by a connecting rod or other structure. In order to ensure the connection stability during the process of delivering the spring coil to the lesion site and avoid the spring coil from falling off prematurely, the connection structure provided between the spring coil and the delivery system in the prior art is usually designed to be more complicated, which not only leads to an increase in its production cost, but also affects its convenience of release, making it difficult to achieve convenient and efficient release operation of the spring coil.

[0003] Therefore, a spring coil mechanical release system is proposed to solve some of the problems mentioned in the prior art. Summary of the Invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art in that the connection structure design between the spring coil and the delivery system is relatively complex, resulting in inconvenient release operation and affecting the efficiency of implant treatment, and to propose a spring coil mechanical release system.

[0005] In order to solve the problems existing in the prior art, the present invention adopts the following technical solutions:

[0006] A spring coil mechanical release system includes a push rod, the interior of the push rod is set as a hollow structure, the distal end of the push rod is provided with a socket, and the inner diameter of the release wire is smaller than the inner diameter of the push rod, the distal end of the push rod is slidably inserted with a release wire, and the distal end of the release wire is provided with a tapered structure, the proximal end of the push rod is slidably inserted with a control wire, and the control wire is associated with the release wire, the distal end of the push rod is connected to the spring coil body, and the spring coil body includes a main spring coil, and a connecting ring coaxially fixed at the end position of the main spring coil, the connecting ring is slidably inserted in the socket, the outer diameter of the connecting ring is adapted to the inner diameter of the socket, the outer diameter of the connecting ring is smaller than the outer diameter of the main spring coil, the inner diameter of the connecting ring is smaller than the outer diameter of the release wire, and the tapered structure is slidably inserted in the connecting ring.

[0007] Preferably, the release wire is fixedly wrapped with a first support block slidably installed in the push rod, and the outer size of the first support block is adapted to the inner size of the push rod, and the control wire is fixedly wrapped with a second support block slidably installed in the push rod, and the outer size of the second support block is adapted to the inner size of the push rod.

[0008] Preferably, the outer movable sleeve of the control wire is provided with a straight spring, and the straight spring is elastically supported between the proximal end of the push rod and the second support block.

[0009] Preferably, a through groove is provided in the end wall of the push rod, and the through groove is spirally wound on the end wall of the push rod.

[0010] Preferably, the outer end wall of the push rod is fixedly wrapped with a first film, and the inner end wall of the push rod is fixedly covered with a second film.

[0011] Preferably, the connection position between the outer end wall of the push rod and the through groove is set as an arc chamfered structure, the first film covers the through groove to form a smooth guide groove, and the guide groove is a spiral structure coiled on the outer end wall of the push rod, and uniformly distributed reinforcement blocks are equidistantly fixed in the through groove.

[0012] Preferably, the proximal end of the push rod is fixedly connected to a handle, and the outer side of the handle is fixedly wrapped with a rubber sleeve, and the outer end wall of the rubber sleeve is configured as a corrugated structure adapted to the palm.

[0013] Preferably, a first chamber is provided in the handle, and a first piston block adapted to its internal size is slidably installed in the first chamber, a column rod arranged parallel to the first chamber is fixed on the first piston block, and the column rod moves through to the outside of the end of the handle, a second chamber is provided in the handle, and a second piston block adapted to its internal size is slidably installed in the second chamber, the control wire moves through the second chamber and is fixedly connected to the second piston block, a channel is fixedly connected between one end of the first chamber close to the column rod and the end of the second chamber away from the control wire, the inner diameter of the first chamber is set to twice the inner diameter of the second chamber, and the height of the second chamber is set to twice the height of the first chamber.

[0014] Preferably, the movable sleeve on the column is provided with a support ring supported between the end of the handle and the end of the column, and the support ring is engaged and connected with the column.

[0015] Preferably, a threaded hole coaxially arranged with the column is provided at the end of the handle, and a screw barrel movably sleeved on the outside of the column is screwed into the threaded hole, and a cavity matching the size of the screw barrel end is provided in the support ring.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. In the present invention, by providing a socket at the distal end of the push rod and setting the inner diameter of the socket to match the outer diameter of the connecting ring in the spring coil body, a release wire having an outer diameter larger than the inner diameter of the connecting ring is slidably inserted into the socket, and the distal end of the release wire is set to a tapered structure, the device can be inserted into the connecting ring through the tapered structure, and the connecting ring is expanded outward to be interference-connected with the socket, thereby achieving a firm connection between the spring coil body and the distal end of the push rod. Then, the release wire is driven to move in the reverse direction to drive the tapered structure to withdraw from the connecting ring, thereby achieving efficient release of the spring coil body. The operation is convenient and the structure is simple. This can not only effectively reduce the cost of delivering and releasing the spring coil body, but also improve the convenience and stability of related operations, and is conducive to improving the efficiency of continuous implantation operations.

[0018] 2. In the present invention, a straight spring is movably sleeved on the outside of the control wire to elastically support the second support block. This allows the second support block to push the control wire in the push rod to always maintain a tendency to move toward the distal end of the push rod, thereby causing the release wire to drive the conical structure to maintain movement toward the distal end of the push rod. This helps ensure that the conical structure is stably inserted into the connecting ring, driving the connecting ring to expand and form a stable interference fit with the insertion hole, which can effectively ensure the stability of the connection between the spring coil body during transportation;

[0019] 3. In the present invention, by providing a through groove with a spiral structure on the end wall of the push rod, the push rod is made to have a spring structure, which can greatly improve the flexibility of the push rod and enable the push rod to adapt to the complex path and dynamic environment in the blood vessel during the delivery process. At the same time, by fixing the first film and the second film on the outer end wall and the inner end wall of the push rod, the through groove can be isolated from the communication between the inside and outside of the push rod. In conjunction with the blocking of the first support block and the second support block at the distal and proximal ends of the push rod, the hollow structure in the push rod forms a closed space. Under the linkage control, there is no need to set a release wire through the push rod, which is conducive to reducing the manufacturing cost of the device.

[0020] 4. In the present invention, the first chamber and the second chamber that are related to each other are opened in the handle, and the first piston block and the second piston block can move synchronously in opposite directions with the help of the connection of the channel, so that the moving direction of the control wire and the moving direction of the column rod are reversed, so that when the operator holds the handle, he only needs to press the column rod to release the spring coil body, which conforms to the holding and operation habits and is conducive to improving the convenience and comfort of the device during actual use. At the same time, by setting the inner diameter of the first chamber to be larger than the inner diameter of the second chamber, the distance that the second piston block moves synchronously in the second chamber is greater than the distance that the first piston block moves synchronously in the first chamber. During operation, only a short-distance pressing of the column rod is required to achieve long-distance movement control of the control wire, which is easier and more convenient to operate, and is conducive to improving the convenience of operation of the device during actual use. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0022] Figure 1 is a three-dimensional diagram of the distal structure of the present invention;

[0023] Figure 2 For the present invention Figure 1 Split diagram of the structure in the middle;

[0024] Figure 3 For the present invention Figure 1 Cross-sectional view of the structure;

[0025] Figure 4 For the present invention Figure 3 Enlarged view of point A in the middle;

[0026] Figure 5 This is a cross-sectional view of the conical structure of the present invention when it is not inserted into the connecting ring;

[0027] Figure 6 For the present invention Figure 5 Enlarged view of point B in the middle;

[0028] Figure 7 A perspective view of the present invention;

[0029] Figure 8 This is a disassembled diagram of the proximal structure of the present invention;

[0030] Figure 9 This is an exploded view of the handle, column and support ring of the present invention;

[0031] Figure 10 For the present invention Figure 7 Cross-sectional view of the mid-structure;

[0032] Figure 11 This is a three-dimensional diagram of the spring coil body of the present invention in an unconnected state.

[0033] Serial number in the picture:

[0034] 1. Push rod; 101. Socket; 102. Release wire; 103. Conical structure; 104. Control wire; 105. First support block; 106. Second support block; 107. Straight spring;

[0035] 2. Spring coil body; 201. Main spring coil; 202. Connecting ring;

[0036] 3. Through groove; 301. First film; 302. Second film; 303. Guide groove; 304. Reinforcement block;

[0037] 4. Grip; 401. Rubber sleeve;

[0038] 5. First chamber; 501. First piston block; 502. Rod; 503. Second chamber; 504. Second piston block; 505. Channel;

[0039] 6. Support ring; 601. Threaded hole; 602. Screw barrel. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present invention will be clearly and completely described 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 the embodiments.

[0041] Example: This example provides a spring coil mechanical release system, see Figures 1-11 Specifically, it includes a push rod 1, the interior of the push rod 1 is set as a hollow structure, the distal end of the push rod 1 is provided with a socket 101, and the inner diameter of the release wire 102 is smaller than the inner diameter of the push rod 1, the distal end of the push rod 1 is slidably plugged with the release wire 102, and the distal end of the release wire 102 is provided with a tapered structure 103, the proximal end of the push rod 1 is slidably plugged with a control wire 104, and the control wire 104 is associated with the release wire 102, and the distal end of the push rod 1 is connected with a spring The coil body 2 includes a main spring coil 201 and a connecting ring 202 coaxially fixed at the end of the main spring coil 201. The connecting ring 202 is slidably inserted into the socket 101. The outer diameter of the connecting ring 202 is adapted to the inner diameter of the socket 101. The outer diameter of the connecting ring 202 is smaller than the outer diameter of the main spring coil 201. The inner diameter of the connecting ring 202 is smaller than the outer diameter of the release wire 102. The conical structure 103 is slidably inserted into the connecting ring 202.

[0042] In the description of the present invention, "proximal end, distal end" refers to the distance relationship relative to the operator. The position held by the operator is the proximal end, and the installation position of the spring coil body 2 is the distal end. The push rod 1 is made of alloy materials such as stainless steel or nickel-titanium. During the connection between the spring coil body 2 and the push rod 1, the main spring coil 201 is inserted into the socket 101, and then the release wire 102 is controlled to move toward the distal end of the push rod 1, and the conical structure 103 set at the distal end of the release wire 102 is inserted into the connecting ring 202. Through the insertion of the conical structure 103, an outward support is formed from the connecting ring 202, so that the connecting ring 202 expands outward and forms an interference connection with the socket 101, thereby realizing the operation of connecting the spring coil body 2 to the distal end of the push rod 1. The above connection is completed during the production and assembly of the device, and the operator can use it directly when obtaining the device for implantation surgery.

[0043] During the implantation operation, the operator delivers the spring coil body 2 to the lesion position in the patient's aneurysm through the connection of the push rod 1. After the spring coil body 2 is delivered to the position, the operator controls the release wire 102 to move proximally, so that the conical structure 103 withdraws from the connecting ring 202, releasing the support for the inside of the connecting ring 202. The main spring coil 201 and the connecting ring 202 are made of platinum tungsten wire, nickel titanium wire, and stainless steel wire, and have a certain deformation recovery ability. When the release wire 102 releases the internal support of the connecting ring 202, the connecting ring 202 returns to its initial state, and its outer diameter is adapted to the inner diameter of the socket 101, and no longer forms an interference connection with the socket 101, which releases the firm connection between the spring coil body 2 and the push rod 1. The operator only needs to pull out the push rod 1. When the spring coil body 2 is supported and blocked in the aneurysm, the spring coil body 2 is separated from the push rod 1. After removing the push rod 1, the above operation is repeated again until the aneurysm lesion is completely blocked.

[0044] During the operation of the device, the spring coil body 2 can be quickly connected and released by simply controlling the movement of the release wire 102 and changing the moving direction of the release wire 102. The operation is convenient and efficient, and there is no need to design a complex connection structure and release structure at the distal end of the push rod 1. The stability and release convenience of the spring coil body 2 when connected to the push rod 1 can be effectively improved. In addition, in the device, the socket 101 opened at the distal end of the push rod 1 has a certain depth. By setting a sufficient depth for the socket 101, the connecting ring 202 will not shake when inserted into the socket 101. Therefore, when the spring coil body 2 is connected to the socket 101 by plugging the connecting ring 202, the stability of the spring coil body 2 when connected to the distal end of the push rod 1 can be effectively guaranteed.

[0045] In the specific implementation process, Figure 3 、 Figure 8 and Figure 10 As shown, the release wire 102 is fixedly wrapped with a first support block 105 which is slidably installed in the push rod 1, and the outer size of the first support block 105 is adapted to the inner size of the push rod 1, and the control wire 104 is fixedly wrapped with a second support block 106 which is slidably installed in the push rod 1, and the outer size of the second support block 106 is adapted to the inner size of the push rod 1.

[0046] When the device is in use, the control wire 104 and the release wire 102 are interconnected. When the control wire 104 is pulled to move toward the proximal end of the push rod 1, the release wire 102 will be driven to move synchronously toward the proximal end of the push rod 1. When the control wire 104 is pushed to move toward the distal end of the push rod 1, the release wire 102 will be driven to move synchronously toward the distal end of the push rod 1. By fixing the first support block 105 that is adapted to the internal size of the push rod 1 and wrapping it around the outside of the release wire 102, and sliding the first support block 105 to the distal end position inside the push rod 1, the release wire 102 can be positioned and supported inside the push rod 1, and the distal end of the release wire 102 can be positioned at the central axis position inside the push rod 1. In this device, the socket 101 is opened at the central axis position of the distal end of the push rod 1. After the connecting ring 202 is inserted into the socket 101, it is also at the central axis position of the distal end of the push rod 1, which allows the release wire 102 to be smoothly and accurately inserted into the connecting ring 202 after moving.

[0047] At the same time, by fixing the second support block 106 that is adapted to the internal size of the push rod 1 and wrapping it on the outside of the control wire 104, and sliding the second support block 106 to the proximal position inside the push rod 1, the control wire 104 can be positioned and supported inside the push rod 1, and the control wire 104 can be positioned at the central axis position inside the push rod 1. With mutual cooperation, the accuracy of the linkage between the control wire 104 and the release wire 102 can be effectively improved.

[0048] In the specific implementation process, Figure 8 and Figure 10 As shown, the outer movable sleeve of the control wire 104 is provided with a straight spring 107, and the straight spring 107 is elastically supported between the proximal end of the pushing rod 1 and the second support block 106. When the device is in use, the straight spring 107 is movably sleeved on the outer side of the control wire 104 to elastically support the second support block 106, so that the second support block 106 pushes the control wire 104 in the pushing rod 1 to always maintain a tendency to move toward the distal end of the pushing rod 1, thereby making it possible for the release wire 102 to always maintain a tendency to move toward the distal end of the pushing rod 1 in the absence of external force. This makes it possible that during the process of using the pushing rod 1 to transport the spring coil body 2, the conical structure 103 set at the distal end of the release wire 102 is always kept stably inserted in the connecting ring 202 under the elastic support of the straight spring 107, which can effectively ensure the stability of the connection of the spring coil body 2 during transportation, and prevent the spring coil body 2 from falling off from the distal end of the pushing rod 1 during transportation, which can further improve the stability of the device in the process of transporting the spring coil body 2 to the lesion site.

[0049] In the specific implementation process, Figure 2 and Figure 3As shown, a through groove 3 is provided in the end wall of the push rod 1, and the through groove 3 is spirally wound on the end wall of the push rod 1. When the device is used, the through groove 3 with a spiral structure is opened on the end wall of the push rod 1, so that the push rod 1 presents a spring structure, thereby greatly improving the flexibility of the push rod 1, so that the push rod 1 can adapt to the complex path and dynamic environment in the blood vessel during the delivery process, and to a certain extent improves the convenience and smoothness of the device when using the push rod 1 to deliver the spring coil body 2.

[0050] The outer end wall of the push rod 1 is fixedly wrapped with a first film 301, and the inner end wall of the push rod 1 is fixedly covered with a second film 302. When the device is in use, the first film 301 is fixedly covered on the outside of the end wall of the push rod 1, and the second film 302 is fixedly covered on the inside of the end wall of the push rod 1, so that the inner and outer sides of the push rod 1 and the through groove 3 are wrapped, isolating the through groove 3 from connecting the inside and outside of the push rod 1, and cooperating with the first support block 105 and the second support block 106 at the distal and proximal ends of the push rod 1 to form a closed space in the hollow structure in the push rod 1. With the help of the air pressure support in the hollow structure in the push rod 1, the movements of the first support block 105 and the second support block 106 in the push rod 1 can be mutually related, thereby realizing the linkage control between the release wire 102 and the control wire 104. There is no need to directly connect the release wire 102 and the control wire 104 in the push rod 1, which can effectively reduce the manufacturing cost of the device.

[0051] In the specific implementation process, Figure 2 and Figure 4 As shown, the connection position between the outer end wall of the push rod 1 and the through groove 3 is set to an arc-shaped chamfered structure, and the first film 301 covers the through groove 3 to form a smooth guide groove 303, and the guide groove 303 is a spiral structure coiled on the outer end wall of the push rod 1, and uniformly distributed reinforcement blocks 304 are equidistantly fixed in the through groove 3. When the device is used, by setting the connection position between the push rod 1 and the through groove 3 to an arc-shaped chamfered structure, the push rod 1 can greatly reduce the scraping of the inner wall of the blood vessel when moving in the blood vessel, which is beneficial to minimize the damage to the blood vessel wall during the implantation operation, reduce the risk of complications such as perforation and tearing, and ensure the safety of the implantation operation to a certain extent.

[0052] In addition, in the device, the first film 301 is tightly wrapped around the outer side of the push rod 1 and the through groove 3. Due to the existence of the through groove 3, a spiral guide groove 303 is formed on the first film 301. When the push rod 1 is obstructed from passing through the blood vessel, if conditions permit, the operator can appropriately control the push rod 1 to rotate. With the help of the axial conveying force generated by the contact between the guide groove 303 and the inner wall of the blood vessel during the rotation of the push rod 1, the push rod 1 can be assisted to pass through the obstruction area more smoothly, which is beneficial to improving the smoothness of the device in conveying the spring coil body 2 with the help of the push rod 1. The reinforcement blocks 304 evenly distributed at equal intervals in the through groove 3 can form a reinforcement support in the through groove 3, which can prevent the push rod 1 from affecting its axial supporting force due to the opening of the through groove 3. With the help of the reinforcement block 304 for connection and support, the structural strength of the push rod 1 can be effectively guaranteed. While ensuring the flexible directional adjustment of the push rod 1, the stability of the push rod 1 during implantation and pushing can also be guaranteed.

[0053] In the specific implementation process, Figure 7 As shown, the proximal end of the push rod 1 is fixedly connected to the handle 4, and the outer side of the handle 4 is fixedly wrapped with a rubber sleeve 401, and the outer end wall of the rubber sleeve 401 is set to a corrugated structure that is adapted to the palm. When the device is used, by wrapping the rubber sleeve 401 on the outer side of the handle 4, the comfort of the operator holding the device for implantation operation can be effectively improved. At the same time, by setting the outer end wall of the rubber sleeve 401 to a corrugated structure that is adapted to the palm, not only the comfort of the operator when holding it can be further improved, but also its anti-slip property can be improved, so that the operator can be more stable when performing the implantation operation.

[0054] In the specific implementation process, Figure 9 and Figure 10 As shown, a first chamber 5 is provided in the handle 4, and a first piston block 501 adapted to its internal size is slidably installed in the first chamber 5, a column rod 502 arranged parallel to the first chamber 5 is fixed on the first piston block 501, and the column rod 502 is movable through to the outside of the end of the handle 4, a second chamber 503 is provided in the handle 4, and a second piston block 504 adapted to its internal size is slidably installed in the second chamber 503, the control wire 104 is movable through the second chamber 503 and is fixedly connected to the second piston block 504, a channel 505 is fixedly connected between one end of the first chamber 5 close to the column rod 502 and the end of the second chamber 503 away from the control wire 104, the inner diameter of the first chamber 5 is set to twice the inner diameter of the second chamber 503, and the height of the second chamber 503 is set to twice the height of the first chamber 5.

[0055] When the device is used, the operator holds the rubber sleeve 401 fixedly wrapped around the outside of the handle 4 and uses the device to implant the spring coil body 2 on the patient. When it is necessary to control the release wire 102 to move toward the proximal end of the push rod 1, the operator only needs to press the end of the column rod 502, and the column rod 502 drives the first piston block 501 to move in the first chamber 5 to release the spring coil body 2. Figure 10 With the position direction in as a reference, the channel 505 is connected between the upper end of the first chamber 5 and the upper end of the second chamber 503. The operator presses down the end of the column rod 502, driving the first piston block 501 to move downward in the first chamber 5, so that the space on the first piston block 501 in the first chamber 5 gradually increases. Through the connection of the channel 505, under the action of air pressure, the second piston block 504 is driven to move upward in the second chamber 503, pulling the control wire 104 toward the handle 4, thereby realizing the control of moving the control wire 104 toward the proximal end of the push rod 1, and then realizing the operation of moving the release wire 102 toward the proximal end of the push rod 1. By converting the moving directions of the first piston block 501 and the second piston block 504 by the first chamber 5 and the second chamber 503, the moving direction of the control wire 104 is opposite to the moving direction of the column rod 502, which is in line with the control habits and is conducive to improving the convenience and comfort of the actual use of the device.

[0056] When the pressure on the column 502 is released, under the elastic support of the straight spring 107, the control wire 104 drives the second piston block 504 to move downward, so that the space on the second piston block 504 in the second chamber 503 gradually increases. Through the connection of the channel 505, under the action of air pressure, the first piston block 501 is driven to move upward in the first chamber 5, driving the column 502 to automatically return to its initial state, making it convenient for subsequent operators to continue to use the device.

[0057] In the device, the proximal end of the push rod 1 and the handle 4 can be connected by a lock, and the control wire 104 and the second piston block 504 can also be connected by a lock. This allows the push rod 1 and the handle 4 to be flexibly disassembled and assembled when the device is in use, and the control wire 104 and the second piston block 504 can also be flexibly disassembled and assembled, so that the handle 4 in the device can be reused, thereby reducing the use cost of the device to a certain extent.

[0058] When the device is in use, the inner diameter of the first chamber 5 is set to twice the inner diameter of the second chamber 503, so that the inner diameter of the first chamber 5 is larger than the inner diameter of the second chamber 503. This allows the first piston block 501 to move a certain distance in the first chamber 5, and the second piston block 504 to move a greater distance in the second chamber 503. This allows the operator to only press the column rod 502 for a short distance to achieve long-distance movement control of the control wire 104, making the operation easier and more convenient, which is conducive to improving the convenience of operation when the device is actually used.

[0059] In the specific implementation process, Figure 9 and Figure 10 As shown, a movable sleeve on the column 502 is provided with a support ring 6 supported between the end of the handle 4 and the end of the column 502, and the support ring 6 is engaged with the column 502. When the device is in use, the support ring 6 is engaged on the column 502, so that the end of the column 502 and the handle 4 can be supported. When the support ring 6 is not removed, the column 502 cannot be pressed to move, which can avoid the column 502 being pressed by mistake during transportation, causing the spring coil body 2 to fall off accidentally. The setting of the support ring 6 can effectively improve the stability and safety of the device during actual use.

[0060] The end of the handle 4 is provided with a threaded hole 601 coaxially arranged with the column 502, and the threaded hole 601 is threaded with a screw barrel 602 that is movably sleeved on the outside of the column 502. The support ring 6 is provided with a cavity that is adapted to the size of the end of the screw barrel 602. When the device is used, the screw barrel 602 is threadedly screwed into the threaded hole 601, which allows the operator to rotate the screw barrel 602 and adjust the height of the end of the screw barrel 602 protruding from the threaded hole 601 during the use of the device. By adjusting the protruding height of 602, the pressing stroke of the column rod 502 can be adjusted, so that the device can adapt to the release of connecting rings 202 of different models and sizes, and by adjusting the protruding height of the screw barrel 602, the operator's pressing stroke of the column rod 502 can be more in line with his own operating habits. By opening a cavity that is adapted to the size of the end of the screw barrel 602 in the support ring 6, the adjustment of the protruding height of the screw barrel 602 will not be affected by the support ring 6, which is conducive to ensuring the stability of the device during actual use.

[0061] Specifically, the working principle and operation method of the present invention are as follows:

[0062] The operator delivers the spring coil body 2 to the patient's aneurysm lesion through the connection of the push rod 1. When the spring coil body 2 needs to be released, the operator removes the support ring 6, releases the pressing restriction on the column rod 502, and then the operator presses the column rod 502, driving the first piston block 501 to move in the first chamber 5, and through the connection of the channel 505, drives the second piston block 504 to move in the second chamber 503, applying power to the control wire 104 to move toward the proximal end of the push rod 1, and through the associated sliding of the second support block 106 and the first support block 105, the release wire 102 drives the conical structure 103 to move toward the proximal end of the push rod 1, driving the conical structure 103 to withdraw from the connecting ring 202, releasing the interference connection between the connecting ring 202 and the socket 101, releasing the spring coil body 2, and sealing the lesion position.

[0063] The above are only preferred specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A spring coil mechanical release system, comprising a push rod (1), characterized in that: The interior of the push rod (1) is configured as a hollow structure, a socket (101) is provided at the distal end of the push rod (1), and the inner diameter of the release wire (102) is smaller than the inner diameter of the push rod (1), a release wire (102) is slidably inserted into the distal end of the push rod (1), and a conical structure (103) is provided at the distal end of the release wire (102), a control wire (104) is slidably inserted into the proximal end of the push rod (1), and the control wire (104) is associated with the release wire (102), and the distal end of the push rod (1) is connected to the spring coil body (2), The spring coil body (2) comprises a main spring coil (201) and a connecting coil (202) coaxially fixed at the end of the main spring coil (201); the connecting coil (202) is slidably inserted into the insertion hole (101); the outer diameter of the connecting coil (202) is adapted to the inner diameter of the insertion hole (101); the outer diameter of the connecting coil (202) is smaller than the outer diameter of the main spring coil (201); the inner diameter of the connecting coil (202) is smaller than the outer diameter of the release wire (102); and the tapered structure (103) is slidably inserted into the connecting coil (202).

2. A spring coil mechanical release system according to claim 1, characterized in that: The release wire (102) is fixedly wrapped with a first support block (105) which is slidably mounted in the push rod (1), and the outer size of the first support block (105) is adapted to the inner size of the push rod (1); the control wire (104) is fixedly wrapped with a second support block (106) which is slidably mounted in the push rod (1), and the outer size of the second support block (106) is adapted to the inner size of the push rod (1).

3. A spring coil mechanical release system according to claim 2, characterized in that: The outer movable sleeve of the control wire (104) is provided with a straight spring (107), and the straight spring (107) is elastically supported between the proximal end of the push rod (1) and the second support block (106).

4. A spring coil mechanical release system according to claim 2, characterized in that: A through groove (3) that penetrates inside and outside is provided in the end wall of the push rod (1), and the through groove (3) is in a spiral structure and is wound around the end wall of the push rod (1).

5. A spring coil mechanical release system according to claim 4, characterized in that: The outer end wall of the push rod (1) is fixedly wrapped with a first film (301), and the inner end wall of the push rod (1) is fixedly covered with a second film (302).

6. A spring coil mechanical release system according to claim 5, characterized in that: The connection position between the outer end wall of the push rod (1) and the through groove (3) is set as an arc chamfered structure, the first film (301) covers the through groove (3) to form a smooth guide groove (303), and the guide groove (303) is a spiral structure coiled on the outer end wall of the push rod (1), and uniformly distributed reinforcement blocks (304) are fixed at equal intervals in the through groove (3).

7. The spring coil mechanical release system according to claim 1, characterized in that: The proximal end of the push rod (1) is fixedly connected to a handle (4), and the outer side of the handle (4) is fixedly wrapped with a rubber sleeve (401), and the outer end wall of the rubber sleeve (401) is configured as a corrugated structure adapted to the palm.

8. A spring coil mechanical release system according to claim 7, characterized in that: The handle (4) is provided with a first chamber (5), and a first piston block (501) adapted to the internal size of the first chamber (5) is slidably installed in the first chamber (5), a column (502) arranged parallel to the first chamber (5) is fixed on the first piston block (501), and the column (502) is movable through the outside of the end of the handle (4), and a second chamber (503) is provided in the handle (4), and a second piston block (501) adapted to the internal size of the second chamber (503) is slidably installed in the second chamber (503). 04), the control wire (104) moves through the second chamber (503) and is fixedly connected to the second piston block (504), and a channel (505) is fixedly connected between one end of the first chamber (5) close to the column rod (502) and one end of the second chamber (503) away from the control wire (104), the inner diameter of the first chamber (5) is set to twice the inner diameter of the second chamber (503), and the height of the second chamber (503) is set to twice the height of the first chamber (5).

9. A spring coil mechanical release system according to claim 8, characterized in that: The movable sleeve on the column (502) is provided with a support ring (6) supported between the end of the handle (4) and the end of the column (502), and the support ring (6) is engaged and connected with the column (502).

10. A spring coil mechanical release system according to claim 9, characterized in that: A threaded hole (601) coaxially arranged with the column (502) is provided at the end of the handle (4), and a screw barrel (602) movably sleeved on the outside of the column (502) is screwed into the inner thread of the threaded hole (601), and a cavity with a size adapted to the end of the screw barrel (602) is provided in the support ring (6).

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