A controllable mechanical release structure for spring coils

Abstract

This invention relates to the field of aneurysm coil embolization technology and discloses a controllable mechanical release structure for the coil, comprising a main body with a compression spring fixedly connected to its outer surface. When the coil needs to be released, simply pull the front end of the main body. The main body will then slide back to its original position under the elastic release force of the compression spring, causing the two clamping blocks to move away from each other. The two clamping blocks will then open, releasing the coil. This eliminates the need to rotate to find the release point during release, prevents displacement of the microcatheter due to the release operation, and is simple and reliable to operate. Release can be completed simply by gently engaging the outer shell and the main body, improving the release speed and ease of operation.

Description

Technical Field

[0001] This invention relates to the field of aneurysm coil embolization technology, specifically a coil controllable mechanical release structure. Background Technology

[0002] Coils are medical devices used to treat aneurysms. During treatment, the coils are inserted into the aneurysm. Once the aneurysm reaches the lesion, the coils fill the aneurysm, preventing blood from flowing into it and thus preventing the aneurysm from rupturing. When using this device, the operator typically connects the spring coil to the push rod via a mechanical structure with a buckle or locking sleeve at the end. After the spring coil is delivered into the blood vessel, the operator unlocks the mechanical structure from the spring coil by rotating the push rod or retracting an external cannula, thereby releasing the spring coil. Due to the poor stability of the connection point between the tiny structure at the end of the push rod and the spring coil, unnecessary twisting or pulling during delivery can easily cause the spring coil to detach prematurely or be stretched, affecting the efficiency of spring coil release and patient comfort. Summary of the Invention

[0003] The purpose of this invention is to provide a controllable mechanical release structure for a spring coil, so as to solve the problems mentioned in the background art.

[0004] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution: This invention relates to a controllable mechanical release structure for a spring coil, comprising a main body, a compression spring fixedly connected to the outer surface of the main body, and further comprising: The elastic mechanism is installed on the side wall of the main body to ensure the stability of the release when the spring coil is released; An auxiliary mechanism is installed on the side wall of the elastic mechanism to reduce the possibility of the spring coil getting stuck during operation.

[0005] Furthermore, the main body includes: The limiting component is installed on the outer wall of the main body; The opening and closing assembly is installed on the side wall of the main body.

[0006] Furthermore, the elastic mechanism includes an elastic plate disposed on the side wall of the opening and closing assembly, and the elastic mechanism also includes: The sliding component is installed on the side wall of the elastic plate.

[0007] Furthermore, the auxiliary mechanism includes a T-shaped frame disposed on the side wall of the elastic plate, the side of the T-shaped frame near the middle of the main body being semi-circularly arranged, and the auxiliary mechanism also includes: The flip component is installed on the side wall of the opening and closing component.

[0008] Furthermore, the limiting component includes a housing slidably connected to the outer surface of the body, and microcatheters are slidably connected to the outer surface of the housing; The end of the compression spring furthest from the main body is fixedly connected to the inner wall of the outer shell.

[0009] Furthermore, the opening and closing assembly includes two connecting rods rotatably connected to the right end of the microcatheter, with two arc-shaped rods rotatably connected to the end of the connecting rods away from the main body; Two arc-shaped rods are rotatably connected inside the outer casing, and clamping blocks are fixedly connected to the ends of the two arc-shaped rods away from the connecting rod.

[0010] Furthermore, a rectangular groove is provided inside the clamping block; The rectangular groove is connected to the outside of the clamping block.

[0011] Furthermore, the elastic plate is fixedly connected to the inner wall of the clamping block on the side away from the arc-shaped rod, and right-angled blocks are fixedly connected to both the front and back of the elastic plate. The sliding assembly includes an elastic frame that is slidably connected to the front and back of two elastic plates, and two baffles are fixedly connected inside the elastic frame; The elastic frame is in contact with the inner walls of the two clamping blocks.

[0012] Furthermore, two elastic sheets are provided on the inner wall of the elastic frame on the side away from the elastic plate, and the end of the elastic sheet away from the baffle is fixedly connected to the inner wall of the elastic frame. Rubber sheets are fixedly connected to the side walls of the elastic plate.

[0013] Furthermore, the T-shaped frame is slidably connected inside the rectangular groove; The flipping assembly includes a spring plate fixedly connected to the side of the T-shaped frame away from the arc-shaped rod, and a flipping plate is provided at the bottom of the T-shaped frame, which is rotatably connected to the inside of the clamping block; The T-shaped frame is fixedly connected to a return spring at the end away from the spring plate, and the side of the T-shaped frame closer to the flip plate is in contact with the side wall of the flip plate.

[0014] The present invention has the following beneficial effects: 1. In this invention, when it is necessary to release the spring coil, simply pull the front end of the main body. At this time, the main body will slide back under the elastic release force of the compressed spring and drive the two clamping blocks to move away from each other. Then the two clamping blocks will open, realizing the release of the spring coil. This eliminates the need to rotate to find the release point when releasing the spring coil, and prevents the microcatheter from shifting due to the release operation. Moreover, the operation is simple and reliable. Release can be completed by gently engaging the outer shell and the main body, improving the release speed of the spring coil and the convenience of operation.

[0015] 2. The present invention reduces the possibility of the two closed clamps contacting the spring coil during the opening process, thus preventing the spring coil from shifting or rotating within the lesion position. This ensures the stability of the spring coil's position during release while improving the release accuracy and patient comfort.

[0016] 3. This invention, by slowing down the reset speed of the elastic plate, can reduce the situation where the elastic plate drives the spring coil to slide excessively through the rubber sheet when the release head is released due to the excessive opening speed of the elastic plate and clamping block. This further ensures the stability of the spring coil at the lesion position after release, while reducing the discomfort caused to the patient by the spring coil during release due to excessive sliding speed, and further improves the release efficiency of the spring coil.

[0017] 4. In this invention, the T-shaped frame will push the flipping plate to rotate when it slides. At this time, the two flipping plates will form a position channel on both sides of the release head to guide it. By guiding the release head, the situation of release head contacting the side wall of the elastic plate during the release process due to the gradual reset of the elastic plate caused by the two clamping blocks driving the elastic plate to reset and release the release head can be reduced, thereby further improving the continuity and efficiency of the release of the release head.

[0018] 5. When the spring plate slides, it will collide with the side wall of the rectangular groove, causing a collision sound between the spring plate and the rectangular groove. This provides clear feedback to the operator when releasing the spring coil, ensuring that the operator clearly understands the progress and completeness of the release head release.

[0019] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall partial cross-sectional structure of the present invention; Figure 3 For the present invention Figure 2 Enlarged view of point A in the middle; Figure 4 This is a partial cross-sectional schematic diagram of the main body of the present invention; Figure 5 For the present invention Figure 4 Enlarged view of point B in the middle; Figure 6 This is a partial cross-sectional schematic diagram of the limiting component of the present invention; Figure 7 This is a partial cross-sectional schematic diagram of the clamping block of the present invention; Figure 8 This is a partial exploded cross-sectional view of the elastic mechanism of the present invention; Figure 9 For the present invention Figure 7 Enlarged diagram of point C in the middle.

[0022] The attached diagram lists the components represented by each number as follows: In the diagram: 1. Main body; 101. Compression spring; 11. Restriction component; 111. Outer shell; 112. Microcatheter; 12. Opening and closing component; 121. Connecting rod; 122. Arc rod; 123. Clamping block; 124. Rectangular groove; 2. Elastic mechanism; 201. Elastic plate; 202. Right-angle block; 21. Sliding component; 211. Elastic frame; 212. Elastic sheet; 213. Rubber sheet; 3. Auxiliary mechanism; 301. T-shaped frame; 31. Flipping component; 311. Spring plate; 312. Flipping plate. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] Please see Figure 1 - Figure 9 As shown, the present invention is a controllable mechanical release structure for a spring coil, comprising a main body 1, wherein a compression spring 101 is fixedly connected to the outer surface of the main body 1, and further comprising: Elastic mechanism 2 is installed on the side wall of the main body 1 to ensure the stability of the release when the spring coil is released; Auxiliary mechanism 3 is installed on the side wall of elastic mechanism 2 to reduce the occurrence of spring coil disengagement and jamming when elastic mechanism 2 is working.

[0025] Entity 1 includes: Restriction component 11 is installed on the outer wall of the main body 1; The opening and closing component 12 is installed on the side wall of the main body 1.

[0026] The elastic mechanism 2 includes an elastic plate 201 disposed on the side wall of the opening and closing assembly 12, and the elastic mechanism 2 also includes: Sliding component 21 is installed on the side wall of elastic plate 201.

[0027] The auxiliary mechanism 3 includes a T-shaped frame 301 disposed on the side wall of the elastic plate 201. The side of the T-shaped frame 301 closest to the middle of the main body 1 is semi-circular. The auxiliary mechanism 3 also includes: The flip component 31 is installed on the side wall of the opening and closing component 12.

[0028] The limiting component 11 includes a housing 111 slidably connected to the outer surface of the main body 1, and a microcatheter 112 is slidably connected to the outer surface of the housing 111; The end of the compression spring 101 furthest from the main body 1 is fixedly connected to the inner wall of the outer shell 111.

[0029] The opening and closing assembly 12 includes two connecting rods 121 rotatably connected to the right end of the microcatheter 112, and two arc-shaped rods 122 rotatably connected to the end of the connecting rods 121 away from the main body 1; Two arc-shaped rods 122 are rotatably connected to the inside of the outer shell 111. The ends of the two arc-shaped rods 122 away from the connecting rod 121 are fixedly connected to clamps 123. First, the microcatheter 112 is put on the outer surface of the outer shell 111, so that the opening and closing component 12 protrudes from the end of the microcatheter 112. Then, the staff holds the outer shell 111 and presses the main body 1.

[0030] A rectangular groove 124 is provided inside the clamping block 123; The rectangular groove 124 is connected to the outside of the clamping block 123.

[0031] The elastic plate 201 is fixedly connected to the inner wall of the clamping block 123 on the side away from the arc rod 122, and right-angle blocks 202 are fixedly connected to both the front and back of the elastic plate 201. The sliding component 21 includes an elastic frame 211 that is slidably connected to the front and back of the two elastic plates 201, and two baffles are fixedly connected inside the elastic frame 211; Among them, the elastic frame 211 is in contact with the inner walls of the two clamping blocks 123. When the two clamping blocks 123 continue to approach each other, the two elastic plates 201 will be blocked by the baffle inside the elastic frame 211, causing the elastic frame 211 to bend. At this time, the elastic frame 211 will bend between the two elastic plates 201 and slide in the direction of the release head.

[0032] Two elastic pieces 212 are provided on the inner wall of the side of the elastic frame 211 away from the elastic plate 201. The end of the elastic piece 212 away from the baffle is fixedly connected to the inner wall of the elastic frame 211. A rubber sheet 213 is fixedly connected to the side wall of the elastic plate 201. When the rubber sheet 213 is in contact with the surface of the spring ring and undergoes a flat deformation, the rubber sheet 213 will be in close contact with the surface of the spring ring. Then, when the two closed clamps 123 are opened, the elastic plate 201 will be reset under its own elasticity.

[0033] T-shaped bracket 301 is slidably connected inside rectangular groove 124; The flipping assembly 31 includes a spring plate 311 fixedly connected to the side of the T-shaped frame 301 away from the arc rod 122, and a flipping plate 312 is provided at the bottom of the T-shaped frame 301. The flipping plate 312 is rotatably connected to the inside of the clamping block 123. Among them, a return spring is fixedly connected to the end of the T-shaped frame 301 away from the spring plate 311. The side of the T-shaped frame 301 close to the flip plate 312 is in contact with the side wall of the flip plate 312. When the T-shaped frame 301 slides in the rectangular groove 124, the T-shaped frame 301 will squeeze the return spring through the inner wall of the rectangular groove 124. At this time, the return spring will accumulate elastic potential energy.

[0034] In use, first, the microcatheter 112 is fitted onto the outer surface of the outer shell 111, with the opening and closing component 12 protruding from the end of the microcatheter 112. Then, the operator holds the outer shell 111 and presses down on the main body 1. When the main body 1 is pressed, it compresses the spring 101. Simultaneously, when the main body 1 is pressed, it pushes the arc-shaped rod 122 to rotate via the connecting rod 121. When the arc-shaped rod 122 rotates, it drives the clamping blocks 123 to rotate synchronously. At this time, the two clamping blocks 123 will open. Then, the operator places the spring release head between the two open clamping blocks 123, and then releases the main body 1. At this time, the spring 101 is compressed. The elastic potential energy will cause the main body 1 to reset. At this time, the two clamps 123 will close and pull the spring coil into the microcatheter 112. Then, the staff will send the microcatheter 112 into the lesion site, push the spring coil out of the microcatheter 112 and gradually enter the aneurysm. After the spring coil is filled, press the main body 1 to open the two clamps 123. After withdrawing the microcatheter 112 and the opening and closing component 12 and moving it an appropriate distance, release the main body 1 again to close the two clamps 123. Then, after the opening and closing component 12 is fully inserted into the microcatheter 112, the microcatheter 112 and the opening and closing component 12 are withdrawn from the body together to complete the purpose of releasing the spring coil.

[0035] When the two clamping blocks 123 open and the release head of the spring coil is placed between them, the worker first passes the release head between the two elastic plates 201. Then, as the two clamping blocks 123 rotate relative to each other and close, the rotation of the clamping blocks 123 causes the elastic plates 201 to slide within the elastic frame 211. At this time, the elastic plates 201 within the two clamping blocks 123 will move closer to each other. When the two elastic plates 201 move closer, they cause the rubber sheet 213 to adhere to the surface of the spring coil. Then, as the two clamping blocks 123 continue to move closer, the two elastic plates 201 are blocked by the baffle within the elastic frame 211, causing the elastic frame 211 to bend. At this time, the elastic frame 211 bends between the two elastic plates 201 and moves towards the release head. The spring coil slides in the direction of release to prevent axial movement. At the same time, when the two elastic plates 201 approach each other and the rubber sheet 213 is in contact with the surface of the spring coil, the rubber sheet 213 will undergo a flattening deformation under the compression of the spring coil. Then, when it is necessary to release the spring coil, simply pull the front end of the main body 1. At this time, the main body 1 will return to its original position and slide under the elastic release force of the compression spring 101, and drive the two clamping blocks 123 to move away from each other. At this time, the two clamping blocks 123 will open, realizing the release of the spring coil. This eliminates the need to rotate to find the release point when releasing the spring coil, and prevents the microcatheter 112 from shifting due to the release operation. Moreover, the operation is simple and reliable. Release can be completed by gently engaging the outer shell 111 and the main body 1, which improves the release speed of the spring coil and the convenience of operation.

[0036] When the rubber sheet 213 conforms to the surface of the spring coil and undergoes a flattened deformation, it will be in close contact with the surface of the spring coil. Then, when the two closed clamps 123 open, the elastic plate 201 will reset under its own elasticity. At this time, the end of the elastic plate 201 away from the clamps 123 will slide towards the spring coil during the reset process. The rubber sheet 213 will reset along with the elastic plate 201 and push the surface of the spring coil, causing the release head to slide a certain distance. By allowing the spring coil to slide slightly, the contact between the two closed clamps 123 and the spring coil during the opening process can be reduced, thus preventing the spring coil from shifting or rotating within the lesion position. This ensures the stability of the spring coil's position during release and improves the release accuracy and patient comfort.

[0037] When the two elastic plates 201 approach each other within the elastic frame 211, the sliding of the elastic plates 201 causes the right-angle block 202 to slide synchronously. As the right-angle block 202 slides, it presses against the curved surface of the arc-shaped area of ​​the elastic sheet 212 and then slides to the inclined surface of the elastic sheet 212. Afterwards, when the two clamping blocks 123 open and cause the elastic plates 201 to reset, the reset of the elastic plates 201 causes the right-angle block 202 to press against the inclined surface of the elastic sheet 212. At this time, the elastic sheet 212 gradually contracts under the sliding pressure of the right-angle block 202, and simultaneously... During the contraction process, the plate 212 limits the reset speed of the elastic plate 201 through the right-angle block 202. By slowing down the reset speed of the elastic plate 201, the excessive sliding of the elastic plate 201 through the rubber sheet 213 caused by the excessive opening speed of the elastic plate 201 and the clamping block 123 during the release of the release head can be reduced. This further ensures the stability of the spring coil at the lesion position after release, while reducing the discomfort caused to the patient by the excessively fast release speed of the spring coil, and further improving the release efficiency of the spring coil.

[0038] When the two clamping blocks 123 close together, causing the elastic plate 201 and elastic frame 211 to bend, the bending deformation of the elastic plate 201 will push the flipping plate 312 to rotate upward. When the flipping plate 312 rotates upward, it will press the arc-shaped surface of the side wall of the T-shaped frame 301, causing the T-shaped frame 301 to slide within the clamping blocks 123. When the T-shaped frame 301 slides within the rectangular groove 124, it will press the return spring through the inner wall of the rectangular groove 124. At this time, the return spring will accumulate elastic potential energy. Simultaneously, the flipping plate 312 will be in a horizontal position with the inner wall of the clamping blocks 123 on both sides of the release head. Then, when the two clamping blocks 123 open and drive the elastic plate 201 to return to its original position, the return spring will... Once the elastic plate 201 is in position, it no longer supports the flipping plate 312. At this time, the elastic potential energy stored in the return spring on the T-shaped frame 301 will be released. When the elastic potential energy is released, it will push the T-shaped frame 301 to slide. When the T-shaped frame 301 slides, it will push the flipping plate 312 to rotate. At this time, the two flipping plates 312 will form a position channel on both sides of the release head. By guiding the release head, the situation of release head contacting the side wall of the elastic plate 201 during the release process due to the gradual reset of the elastic plate 201 caused by the two clamping blocks 123 driving the elastic plate 201 to reset and release the release head can be reduced. This further improves the continuity and efficiency of the release head release.

[0039] When the side wall of the T-shaped frame 301 separates from the flip plate 312, the return spring behind the T-shaped frame 301 will push the T-shaped frame 301 to slide with the rotation amplitude of the flip plate 312 during the rotation of the flip plate 312. When the release head is completely separated from the clamping blocks 123 between the two clamping blocks 123, the T-shaped frame 301 will drive the spring plate 311 to slide under the elasticity of the return spring. When the spring plate 311 slides, it will collide with the side wall of the rectangular groove 124, making a collision sound between the spring plate 311 and the rectangular groove 124. This can provide clear feedback to the operator when releasing the spring coil, thus ensuring that the operator clearly understands the progress and integrity of the release head release.

[0040] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A controllable mechanical release structure for a spring coil, comprising a main body (1), wherein a compression spring (101) is fixedly connected to the outer surface of the main body (1), characterized in that, Also includes: The elastic mechanism (2) is installed on the side wall of the main body (1) to ensure the stability of the release when the spring coil is released; The auxiliary mechanism (3) is installed on the side wall of the elastic mechanism (2) to reduce the situation of spring coil getting stuck when the elastic mechanism (2) is working.

2. The controllable mechanical release structure of the spring coil according to claim 1, characterized in that: The main body (1) includes: A limiting component (11) is installed on the outer wall of the main body (1); An opening and closing component (12) is installed on the side wall of the main body (1).

3. The controllable mechanical release structure of the spring coil according to claim 2, characterized in that: The elastic mechanism (2) includes an elastic plate (201) disposed on the side wall of the opening and closing assembly (12), and the elastic mechanism (2) further includes: A sliding assembly (21) is mounted on the side wall of the elastic plate (201).

4. The controllable mechanical release structure of the spring coil according to claim 3, characterized in that: The auxiliary mechanism (3) includes a T-shaped frame (301) disposed on the side wall of the elastic plate (201), the T-shaped frame (301) being semi-circular on the side near the middle of the main body (1), and the auxiliary mechanism (3) further includes: A flipping component (31) is mounted on the side wall of the opening and closing component (12).

5. The controllable mechanical release structure of the spring coil according to claim 4, characterized in that: The limiting component (11) includes a housing (111) slidably connected to the outer surface of the body (1), and a microcatheter (112) is slidably connected to the outer surface of the housing (111). The end of the compression spring (101) away from the main body (1) is fixedly connected to the inner wall of the outer shell (111).

6. The controllable mechanical release structure of the spring coil according to claim 5, characterized in that: The opening and closing assembly (12) includes two connecting rods (121) rotatably connected to the right end of the microcatheter (112), and two arc-shaped rods (122) are rotatably connected to the end of the connecting rod (121) away from the main body (1). The two arc-shaped rods (122) are rotatably connected inside the outer casing (111), and a clamping block (123) is fixedly connected to one end of the two arc-shaped rods (122) away from the connecting rod (121).

7. The controllable mechanical release structure of the spring coil according to claim 6, characterized in that: The clamping block (123) has a rectangular groove (124) inside; The rectangular groove (124) is connected to the outside of the clamping block (123).

8. The controllable mechanical release structure of the spring coil according to claim 6, characterized in that: The elastic plate (201) is fixedly connected to the inner wall of the clamping block (123) on the side away from the arc rod (122), and right-angled blocks (202) are fixedly connected to both the front and back of the elastic plate (201). The sliding assembly (21) includes an elastic frame (211) that is slidably connected to the front and back of the two elastic plates (201), and two baffles are fixedly connected inside the elastic frame (211); The elastic frame (211) is in contact with the inner walls of the two clamping blocks (123).

9. The controllable mechanical release structure of the spring coil according to claim 8, characterized in that: Two elastic pieces (212) are provided on the inner wall of the side of the elastic frame (211) away from the elastic plate (201), and the end of the elastic piece (212) away from the baffle is fixedly connected to the inner wall of the elastic frame (211). A rubber sheet (213) is fixedly connected to the side wall of the elastic plate (201).

10. The controllable mechanical release structure of the spring coil according to claim 7, characterized in that: The T-shaped frame (301) is slidably connected inside the rectangular groove (124); The flipping assembly (31) includes a spring plate (311) fixedly connected to the side of the T-shaped frame (301) away from the arc rod (122), and a flipping plate (312) is provided at the bottom of the T-shaped frame (301), and the flipping plate (312) is rotatably connected to the inside of the clamping block (123). The T-shaped frame (301) is fixedly connected to a return spring at the end away from the spring plate (311), and the side of the T-shaped frame (301) near the flip plate (312) is in contact with the side wall of the flip plate (312).

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