Loader and spring coil loader kit

Abstract

The utility model provides a kind of loader and spring ring loader suite, it is related to medical instrument technical field.The loader includes introduction piece and sheath, one end of introduction piece is equipped with taper hole, the other end is equipped with the joint part of cooperation connection sheath;Taper hole and joint part between are equipped with shrinkage hole part, taper hole, shrinkage hole part and joint part are sequentially communicated;From the end far from shrinkage hole part to the aperture of taper hole close to the end of shrinkage hole part, aperture decreases.Spring ring can be maintained loop structure before clinical use and placed in the outside of loader, to avoid spring ring to occur plastic deformation due to long-term linear state extension.Clinical use when pulling spring ring is compressed after being extended through shrinkage hole part into sheath after being compressed through taper hole, shrinkage hole part can effectively block spring ring, to reduce the risk of spring ring from sheath inside to drop out, and sheath end does not need to be blocked and unblock, more convenient for clinical operation.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a loader and a spring coil loader kit. Background Technology

[0002] Interventional endovascular embolization typically uses coils as the solid embolic material. During implantation, the coil needs to be placed in a straight line inside the loader, and its ends are sealed with wires to prevent it from dislodging. However, existing techniques have the following limitations: First, prolonged placement of the coil within the loader's tubing may lead to plastic deformation, thereby damaging its original structure; second, in clinical practice, the wire sealing devices at the ends of the loader must be removed before the coil is loaded, a process that is rather cumbersome in actual clinical application. Utility Model Content

[0003] The purpose of this utility model is to provide a loader and a spring coil loader kit to alleviate the technical problems of spring coils being easily deformed by the constraint of the loader and the inconvenience of clinical operation.

[0004] In a first aspect, the loader provided by this utility model includes: an inlet and a sheath, wherein one end of the inlet is provided with a tapered hole and the other end is provided with a connector that is fitted to connect with the sheath; A constricted portion is provided between the conical hole and the connector portion, and the conical hole, the constricted portion, and the connector portion are connected in sequence; The diameter of the tapered hole decreases from the end furthest from the constricted portion to the end closest to the constricted portion.

[0005] In conjunction with the first aspect, the present invention provides a first possible implementation of the first aspect, wherein the connector portion includes a socket, and an insertion mounting groove is provided at one end of the socket opposite to the constricted portion.

[0006] In conjunction with the first aspect, this utility model provides a second possible implementation of the first aspect, wherein the outer wall of the inlet member is provided with a plurality of grooves, and the plurality of grooves are spaced apart along the circumference of the inlet member.

[0007] Secondly, the spring coil loader kit provided by this utility model includes: a pressure cap, a spring coil, a pusher, and the loader described in the first aspect; The spring coil is placed inside the pressure cap, and the pressure cap, the inlet and the sheath are arranged in sequence. The pusher passes through the sheath and the inlet in sequence and is connected to one end of the spring coil.

[0008] In conjunction with the second aspect, the present invention provides a first possible implementation of the second aspect, wherein the pressure cap includes: a bottom cover and an upper cover connected to the bottom cover; The spring coil is positioned between the bottom cover and the top cover.

[0009] In conjunction with the first possible implementation of the second aspect, the present invention provides a second possible implementation of the second aspect, wherein the bottom cover is provided with a protrusion, the top cover is provided with a recess facing away from the bottom cover, and the protrusion is interference-fitted into the recess.

[0010] In conjunction with the second aspect, this utility model provides a third possible implementation of the second aspect, wherein a sheath is provided on the outside of the sheath tube, and the sheath abuts against the inlet member.

[0011] In conjunction with the third possible implementation of the second aspect, this utility model provides a fourth possible implementation of the second aspect, wherein the end of the sheath away from the inlet is connected to a loader mounting base.

[0012] In conjunction with the fourth possible implementation of the second aspect, this utility model provides a fifth possible implementation of the second aspect, wherein the loader mounting base is provided with a cone inserted into the sheath.

[0013] In conjunction with the fourth possible implementation of the second aspect, this utility model provides a sixth possible implementation of the second aspect, wherein the pusher includes: a push block and a shaft connecting the push block; The shaft passes through the loader mounting base, the sheath, and the inlet, and is connected to one end of the spring coil.

[0014] In conjunction with the fourth possible implementation of the second aspect, this utility model provides a seventh possible implementation of the second aspect, wherein the pressure cap, the protective sleeve, and the pusher are detachably connected to the tray.

[0015] In conjunction with the seventh possible implementation of the second aspect, this utility model provides an eighth possible implementation of the second aspect, wherein the tray cover is fitted with a sealing cap; The tray has a first edge portion, and the cover has a second edge portion that intersects with the first edge portion.

[0016] In conjunction with the eighth possible implementation of the second aspect, this utility model provides a ninth possible implementation of the second aspect, wherein the cover is provided with a pressing protrusion that abuts against the loader mounting seat; The pressure cap has an insertion portion that is interference-fitted to the tray and a protrusion that abuts against the cover.

[0017] This utility model embodiment brings the following beneficial effects: One end of the inlet has a conical hole, and the other end has a connector for connecting to the sheath. A constricted section is provided between the conical hole and the connector. The conical hole, the constricted section, and the connector are sequentially connected. The diameter of the conical hole decreases from the end furthest from the constricted section to the end closest to it. The spring coil can maintain its coiled structure outside the loader, thus avoiding plastic deformation due to long-term linear extension. In clinical use, the pulled spring coil is compressed through the conical hole and extends through the constricted section into the sheath. The constricted section effectively blocks the spring coil, reducing the risk of it detaching from the sheath. The sheath end does not require sealing or unsealing, making clinical operation more convenient.

[0018] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the specific embodiments or related technologies of this utility model, the drawings used in the description of the specific embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 A partial cross-sectional view of the loader provided in an embodiment of this utility model; Figure 2 A front view of the loader's import component provided in an embodiment of this utility model; Figure 3 A cross-sectional view of the loader's inlet component provided in an embodiment of this utility model; Figure 4 Explosion of the spring coil loader kit provided in the embodiments of this utility model Figure 1 ; Figure 5 Partial perspective view of the spring coil loader kit provided in the embodiment of this utility model. Figure 1 ; Figure 6 Partial perspective view of the spring coil loader kit provided in the embodiment of this utility model. Figure 2 ; Figure 7 Partial perspective view of the spring coil loader kit provided in the embodiment of this utility model. Figure 3 ; Figure 8 Explosion of the spring coil loader kit provided in the embodiments of this utility model Figure 2 ; Figure 9A schematic diagram of the bottom cover of the loader provided in an embodiment of this utility model. Figure 1 ; Figure 10 A schematic diagram of the bottom cover of the loader provided in an embodiment of this utility model. Figure 2 ; Figure 11 A schematic diagram of the top cover of the loader provided in an embodiment of this utility model. Figure 1 ; Figure 12 A schematic diagram of the top cover of the loader provided in an embodiment of this utility model. Figure 2 ; Figure 13 A schematic diagram of the cover of the spring coil loader kit provided in an embodiment of this utility model; Figure 14 A cross-sectional view of the spring coil loader kit provided in an embodiment of this utility model.

[0021] Icons: 100-Inlet component; 101-Conical hole; 102-Connector; 103-Contraction hole; 104-Inlet mounting groove; 105-Groove; 200-Sheath; 300-Grip cap; 310-Bottom cover; 311-Protrusion; 312-Boss; 320-Top cover; 321-Concave hole; 322-Plug-in part; 400-Spring ring; 500-Pusher; 510-Push block; 520-Shaft; 600-Sheath; 700-Loader mounting base; 701-Conical head; 800-Pattern; 801-First edge; 900-Sealing cap; 901-Second edge; 902-Clamping protrusion. Detailed Implementation

[0022] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0023] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. Furthermore, the terms "first," "second," and "third" are only used to describe differences in name and should not be construed as indicating or implying relative importance. Physical quantities in formulas, unless otherwise specified, should be understood as basic quantities of the International System of Units (SI) base units, or derived quantities derived from basic quantities through mathematical operations such as multiplication, division, differentiation, or integration.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] like Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 6 As shown, the loader provided in this embodiment of the present invention includes: an inlet 100 and a sheath 200. One end of the inlet 100 is provided with a conical hole 101, and the other end is provided with a connector 102 that is fitted to connect the sheath 200. A constriction portion 103 is provided between the conical hole 101 and the connector 102. The conical hole 101, the constriction portion 103 and the connector 102 are connected in sequence. The diameter of the conical hole 101 decreases from the end away from the constriction portion 103 to the end close to the constriction portion 103.

[0026] Before clinical use, the spring coil 400 maintains its coiled structure outside the loader, thus preventing plastic deformation caused by prolonged linear extension. During clinical use, the spring coil 400 is pulled into the sheath 200 through the conical hole 101 and the constricted hole 103. The constricted hole 103 has a smaller diameter, reducing the risk of the spring coil 400 detaching from the sheath 200. Therefore, the end of the sheath 200 does not need to be sealed, and thus does not need to be unsealed during clinical operation, making clinical operation more convenient.

[0027] See Figure 1 and Figure 3In this embodiment of the invention, the connector portion 102 includes a socket, and an insertion mounting groove 104 is provided at the end of the socket opposite to the constricted portion 103. The insertion mounting groove 104 is a groove that gradually narrows from the end furthest from the socket to the end closest to the socket, thereby facilitating the insertion of the sheath tube 200 into the socket along the insertion mounting groove 104. In an optional embodiment, the sheath tube 200 can be interference-fitted into the socket.

[0028] like Figure 2 , Figure 5 and Figure 6 As shown, the outer wall of the inlet member 100 is provided with a plurality of grooves 105, which are spaced apart circumferentially along the inlet member 100. This can reduce the weight of the inlet member 100, save its manufacturing materials, and reduce manufacturing costs. In addition, glue can be injected into the grooves 105 to bond the inlet member 100 to the pressure cap 300.

[0029] like Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, the spring coil loader kit provided in this embodiment of the present invention includes: a pressure cap 300, a spring coil 400, a pusher 500, and the loader described in the above embodiment; the spring coil 400 is placed inside the pressure cap 300, the pressure cap 300, the guide 100 and the sheath 200 are arranged in sequence, and the pusher 500 passes through the sheath 200 and the guide 100 in sequence and is connected to one end of the spring coil 400.

[0030] When not in use, the spring coil 400 can be stored inside the cap 300 to prevent contamination. During clinical use, the spring coil 400 can be pulled into the sheath 200 by manually pulling the pusher 500, so that the spring coil 400 extends in a straight line within the sheath 200.

[0031] See Figure 5 In this embodiment of the invention, the pressure cap 300 includes a bottom cap 310 and an upper cap 320 connecting the bottom cap 310; a spring coil 400 is disposed between the bottom cap 310 and the upper cap 320. The bottom cap 310 and the upper cap 320 can be glued together or detachably connected by a snap-fit ​​connection. Additionally, a column structure can be provided between the bottom cap 310 and the upper cap 320, and the spring coil 400 can be wound around the outside of the column structure. When the end of the spring coil 400 is pulled inward toward the sheath 200, the spring coil 400 rotates around the column structure and gradually extends into the sheath 200.

[0032] like Figure 8 , Figure 9 , Figure 10 , Figure 11 and Figure 12As shown, the bottom cover 310 has a protrusion 311, and the top cover 320 has a recess 321 facing away from the bottom cover 310. The protrusion 311 is interference-fitted into the recess 321, thereby achieving relative fixation between the bottom cover 310 and the top cover 320.

[0033] like Figure 4 , Figure 6 and Figure 7 As shown, a sheath 600 is provided on the outside of the sheath 200. The sheath 600 abuts against the guide 100 and is protected outside the sheath 200. When the pusher 500 pulls the spring coil 400 into the sheath 200, the sheath 600 abuts against the guide 100, thereby preventing the guide 100 from moving with the spring coil 400.

[0034] See Figure 7 The end of the sheath 200 away from the inlet 100 is connected to a loader mounting base 700, wherein the loader mounting base 700 can be configured with a threaded or snap-fit ​​structure, and when the spring coil 400 is pulled into the sheath 200, the loader mounting base 700 can be connected to the implantation control device.

[0035] Furthermore, the loader mounting base 700 is provided with a cone 701 inserted into the sheath 600. The cone 701 fits into the sheath 600, thereby ensuring that the loader mounting base 700 and the sheath 600 are coaxial.

[0036] like Figure 4 , Figure 5 and Figure 7 As shown, the pusher 500 includes a pusher block 510 and a shaft 520 connected to the pusher block 510; the shaft 520 passes through the loader mounting base 700, the sheath tube 200 and the inlet 100, and is connected to one end of the spring coil 400.

[0037] In an optional embodiment, an operating device for driving the shaft 520 can be installed on the pusher block 510. After the spring coil 400 is pulled into the sheath 200, the pusher 500 can be pulled out of the sheath 600 by continuing to pull it. Then the sheath 200 is connected to the microcatheter. The operating device is used to drive the shaft 520, thereby pushing the spring coil 400 from the sheath 200 into the microcatheter.

[0038] like Figure 4 , Figure 5 , Figure 6 and Figure 7As shown, the pressure cap 300, sheath 600, and pusher 500 are detachably connected to the tray 800. The tray 800 supports the pressure cap 300, sheath 600, and pusher 500, providing protection. The pressure cap 300, sheath 600, and pusher 500 can be mounted on the tray 800 via snap-fit ​​connections or interference fits. In an optional embodiment, the sheath 200 and sheath 600 can be made entirely or partially transparent to allow observation of the state of the spring coil 400.

[0039] See Figure 8 and Figure 13 The tray 800 is covered by a cover 900; the tray 800 has a first edge portion 801, and the cover 900 has a second edge portion 901 that intersects with the first edge portion 801. The first edge portion 801 and the second edge portion 901 can be pushed and pressed separately by a single-handed rubbing operation, thereby separating the cover 900 from the tray 800.

[0040] like Figure 8 , Figure 9 , Figure 10 , Figure 11 , Figure 12 , Figure 13 and Figure 14 As shown, the cover 900 has a pressing protrusion 902 that abuts against the loader mounting base 700. When the cover 900 is closed on the tray 800, the pressing protrusion 902 presses against the loader mounting base 700, thereby ensuring the loader mounting base 700 is stable. The pressure cover 300 has an insertion portion 322 that is interference-fitted to the tray 800 and a boss 312 that abuts against the cover 900. The upper cover 320 is recessed in the direction away from the bottom cover 310 to form a recessed hole 321, and a protrusion 322 is formed on the surface away from the bottom cover 310. The protrusion 311 is interference-fitted into the recessed hole 321, and the insertion portion 322 is interference-fitted into the mounting hole on the tray 800, thereby ensuring the pressure cover 300 is stable relative to the tray 800. In addition, the bottom cover 310 protrudes towards the cover 900 to form a boss 312 that abuts against the cover 900, which improves the stability of the pressure cap 300 between the tray 800 and the cover 900.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A loader, characterized in that, include: The inlet (100) and the sheath (200) are provided with a tapered hole (101) at one end and a connector (102) at the other end that is fitted to connect with the sheath (200). A constriction section (103) is provided between the conical hole (101) and the connector (102), and the conical hole (101), the constriction section (103) and the connector (102) are connected in sequence; The diameter of the tapered hole (101) decreases from one end away from the constricted portion (103) to the end near the constricted portion (103).

2. The loader according to claim 1, characterized in that, The connector (102) includes a socket, and an insertion mounting groove (104) is provided at the end of the socket opposite to the constricted hole (103).

3. The loader of claim 1, wherein, The outer wall of the inlet member (100) is provided with a plurality of grooves (105), and the plurality of grooves (105) are arranged at intervals along the circumference of the inlet member (100).

4. A spring coil loader kit characterized by, include: A pressure cap (300), a spring ring (400), a pusher (500), and a loader as described in any one of claims 1 to 3; The spring coil (400) is placed inside the pressure cap (300). The pressure cap (300), the inlet (100) and the sheath (200) are arranged in sequence. The pusher (500) passes through the sheath (200) and the inlet (100) in sequence and is connected to one end of the spring coil (400).

5. The spring coil loader kit of claim 4, wherein, The pressure cap (300) includes: a bottom cover (310) and an upper cover (320) connected to the bottom cover (310); The spring coil (400) is positioned between the bottom cover (310) and the top cover (320).

6. The spring coil loader kit of claim 5, wherein, The bottom cover (310) has a protrusion (311), and the top cover (320) has a recess (321) facing away from the bottom cover (310). The protrusion (311) is interference-fitted into the recess (321).

7. The spring coil loader kit of claim 4, wherein, The sheath (200) is fitted with a sleeve (600) on the outside, and the sleeve (600) abuts against the inlet (100).

8. The spring coil loader kit of claim 7, wherein, The end of the sheath (200) away from the inlet (100) is connected to a loader mounting base (700).

9. The spring coil loader kit of claim 8, wherein, The loader mounting base (700) is provided with a cone (701) inserted into the sheath (600).

10. The spring coil loader kit of claim 8, wherein, The pusher (500) includes: a push block (510) and a shaft (520) connecting the push block (510). The shaft (520) passes through the loader mounting base (700), the sheath (200) and the inlet (100), and is connected to one end of the spring coil (400).

11. The spring coil loader kit according to any one of claims 8 to 10, characterized in that, The pressure cap (300), the protective sleeve (600), and the pusher (500) are detachably connected to the tray (800).

12. The spring coil loader kit of claim 11, wherein, The tray (800) is covered with a cap (900); The tray (800) has a first edge portion (801), and the cover (900) has a second edge portion (901) that intersects with the first edge portion (801).

13. The spring coil loader kit of claim 12, wherein, The cover (900) is provided with a pressing protrusion (902) that abuts against the loader mounting base (700); The gland (300) is provided with a plug-in part (322) which is interference-fitted to the tray (800), and a boss (312) which abuts against the cover (900).

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