Guide device and interventional surgical end

Abstract

This application relates to the field of medical device technology and discloses a guiding device and an interventional surgical end. The guiding device includes a first connector and a second connector, which are detachably connected. The first connector has a first hole, and the second connector has a second hole. The first hole and the second hole are arranged sequentially along a first direction, and the first hole and the second hole are coaxially arranged. The axes of the first hole and the second hole are both parallel to the first direction, and the diameter of the first hole is smaller than the diameter of the second hole. The guiding device and interventional surgical end provided by this application solve the problem that current guiding devices can only be used with puncture needles of specific sizes, resulting in poor versatility.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and in particular to a guiding device and an interventional surgical end. Background Technology

[0002] In percutaneous puncture surgery, a guide device is needed to ensure the accuracy of the puncture needle movement during the insertion and withdrawal of the needle at the end of the interventional procedure, in order to ensure a certain level of precision and reduce needle wobbling.

[0003] The guide device can be used in both robotic interventional procedures and manual puncture procedures. In robotic interventional procedures, the guide device is held by the surgical end of the interventional procedure, and the robotic arm drives the end of the interventional procedure to perform the puncture. In manual puncture procedures, the guide device is held by the surgical end of the interventional procedure to position and guide the puncture needle, and then the puncture is performed manually.

[0004] In related technologies, the guide device is generally designed as an instrument with a through hole. The through hole and the puncture needle cooperate to form a small gap, ensuring that the puncture needle can slide in and out smoothly without causing too much impact on accuracy. However, the current guide device can only be used with puncture needles of specific specifications, and its versatility is poor. Utility Model Content

[0005] This application provides a guide device and an interventional surgical end, which solves the problem that current guide devices can only be used with puncture needles of specific sizes and have poor versatility.

[0006] In a first aspect, embodiments of this application provide a guiding device, including a first connector and a second connector, the first connector and the second connector being detachably connected; the first connector is provided with a first hole, the second connector is provided with a second hole, the first hole and the second hole are arranged sequentially along a first direction, the first hole and the second hole are coaxially arranged, the axis of the first hole and the axis of the second hole are both parallel to the first direction, and the diameter of the first hole is smaller than the diameter of the second hole.

[0007] The guiding device provided in this application embodiment has at least the following beneficial effects:

[0008] Since the first connector and the second connector are detachably connected, the first connector is provided with a first hole, and the second connector is provided with a second hole. The first hole and the second hole are arranged sequentially along the first direction. The first hole and the second hole are coaxially arranged. The axis of the first hole and the axis of the second hole are both parallel to the first direction, and the diameter of the first hole is smaller than the diameter of the second hole. Therefore, it is possible to guide a puncture needle with a smaller needle diameter through the smaller first hole, or to disassemble the first connector and the second connector and guide a puncture needle with a larger needle diameter through the larger second hole. This allows for the use of puncture needles of different specifications and provides good versatility.

[0009] In some embodiments, the first connector includes a first limiting portion, and the second connector includes a second limiting portion, which cooperates with the first limiting portion to restrict the second connector from rotating relative to the first connector about the axis of the first hole.

[0010] In some embodiments, multiple first limiting portions and multiple second limiting portions are provided, and the first limiting portions and the second limiting portions are provided in a one-to-one correspondence, with multiple first limiting portions being spaced apart around the first hole.

[0011] In some embodiments, the first connector includes a first part, through which the first hole passes; the second connector includes a split part, through which the second hole passes; the first part and the split part are arranged sequentially along the first direction, and the first part abuts against the split part.

[0012] In some embodiments, the first connector further includes a second part, the first part and the second part being sequentially arranged and connected along the first direction, the second part being detachably engaged with the split part to restrict the first part from moving in a direction away from the split part.

[0013] In some embodiments, the first connector further includes a third part, the first part and the third part are arranged sequentially along the first direction, the third part is provided with a limiting hole, the limiting hole is coaxially arranged with the first hole, the second hole is arranged sequentially with the limiting hole, and the diameter of the first hole is equal to the diameter of the limiting hole.

[0014] In some embodiments, the first connector further includes a connecting portion, the first portion and the third portion are respectively disposed at both ends of the connecting portion, and two split portions are provided. The second connector further includes a main body portion, the two split portions are respectively disposed at both ends of the main body portion, and both split portions are located between the first portion and the third portion. The first portion abuts against one of the split portions, and the third portion abuts against the other split portion.

[0015] In some embodiments, the diameter of the split portion is larger than the diameter of the main body portion.

[0016] In some embodiments, one of the first connector and the second connector is provided with an external thread, and the other of the first connector and the second connector is provided with an internal thread that mates with the external thread, wherein the external thread is coaxially arranged with the first hole.

[0017] In some embodiments, the interior of the first hole is provided with a first flexible structure, the first flexible structure including a plurality of first flexible arms, the plurality of first flexible arms being spaced apart around the axis of the first hole, one end of the first flexible arm being connected to the inner wall of the first hole, the other end of the first flexible arm being a free end, and the length direction of the first flexible arm being set at an angle to the radial direction of the first hole; and / or, the interior of the second hole is provided with a second flexible structure, the second flexible structure including a plurality of second flexible arms, the plurality of second flexible arms being spaced apart around the axis of the second hole, one end of the second flexible arm being connected to the inner wall of the second hole, the other end of the second flexible arm being a free end, and the length direction of the second flexible arm being set at an angle to the radial direction of the second hole.

[0018] Secondly, embodiments of this application provide a guiding device, including a first connector, the first connector having a first hole, the axis of the first hole being parallel to a first direction; the first connector including a first part and a second part, the first part and the second part being distributed along a second direction parallel to the first direction and surrounding the first hole, and the distance between the first part and the second part being adjustable.

[0019] The guiding device provided in this application embodiment has at least the following beneficial effects:

[0020] Because the first connector is provided with a first hole, the axis of the first hole is parallel to the first direction; the first connector includes a first part and a second part, the first part and the second part are distributed along a second direction parallel to the first direction and surround the first hole, and the distance between the first part and the second part is adjustable, so the size of the first hole can be adjusted by adjusting the distance between the first part and the second part, so as to guide puncture needles of different diameters through the first hole, thereby making it suitable for puncture needles of different specifications and having good versatility.

[0021] In some embodiments, the guiding device further includes a second connector having a second hole. The first hole and the second hole are coaxially arranged. Both the first part and the second part are accommodated within the second hole. The outer surface of the first part includes a first inclined surface, and the outer surface of the second part includes a second inclined surface. The inner wall of the second hole is provided with a frustum surface. Both the first inclined surface and the second inclined surface are slidably fitted with the frustum surface. Both the first part and the second part are detachably connected to the second connector, and the first part and the second part can move together relative to the second connector in a direction parallel to the first direction.

[0022] In some embodiments, the inner wall of the second hole is provided with a plurality of fixed adsorption elements, the plurality of fixed adsorption elements are spaced apart along the first direction, the outer surface of the first part is provided with a first adsorption element, the outer surface of the second part is provided with a second adsorption element, the first adsorption element is magnetically connected to a portion of the fixed adsorption elements, and the second adsorption element is magnetically connected to a portion of the fixed adsorption elements.

[0023] In some embodiments, the interior of the first hole is provided with a first flexible structure, the first flexible structure including a plurality of first flexible arms, the plurality of first flexible arms being spaced apart around the axis of the first hole, one end of the first flexible arm being connected to the inner wall of the first hole, the other end of the first flexible arm being a free end, and the length direction of the first flexible arm being set at an angle to the radial direction of the first hole.

[0024] Thirdly, embodiments of this application provide a guiding device, including a first connector, the first connector having a first hole, the axis of the first hole being parallel to a first direction; the interior of the first hole is provided with a first flexible structure, the first flexible structure including a plurality of first flexible arms, the plurality of first flexible arms being spaced apart around the axis of the first hole, one end of the first flexible arm being connected to the inner wall of the first hole, the other end of the first flexible arm being a free end, and the length direction of the first flexible arm being set at an angle to the radial direction of the first hole.

[0025] The guiding device provided in this application embodiment has at least the following beneficial effects:

[0026] Because the first connector has a first hole with its axis parallel to a first direction, and the interior of the first hole has a first flexible structure comprising multiple first flexible arms, which are spaced apart around the axis of the first hole, with one end of each first flexible arm connected to the inner wall of the first hole and the other end being a free end, and the length direction of the first flexible arm forming an angle with the radial direction of the first hole, the multiple first flexible arms can maintain the same motion state when inserting puncture needles of different diameters into the first hole. Their free ends can form a corresponding circular hole, which, in conjunction with the puncture needle, can achieve sliding with low resistance and ensure high guiding accuracy. This allows the first hole to accommodate puncture needles of different specifications, achieving stepless variation and thus providing good versatility.

[0027] In some embodiments, the guiding device further includes a second connector, the first connector and the second connector being detachably connected; the second connector is provided with a second hole, the first hole and the second hole are arranged sequentially along the first direction, the first hole and the second hole are coaxially arranged, and the diameter of the first hole is smaller than the diameter of the second hole.

[0028] In some embodiments, the first connector includes a first part and a second part, the first part and the second part being distributed along a second direction parallel to the first direction and surrounding the first hole, and the distance between the first part and the second part being adjustable.

[0029] Fourthly, embodiments of this application provide an interventional surgical end device, which includes a guide device as described in the first aspect, the second aspect, or the third aspect.

[0030] The interventional surgical tip provided in this application embodiment has at least the following beneficial effects:

[0031] Since the first connector and the second connector are detachably connected, the first connector is provided with a first hole, and the second connector is provided with a second hole. The first hole and the second hole are arranged sequentially along the first direction. The first hole and the second hole are coaxially arranged. The axis of the first hole and the axis of the second hole are both parallel to the first direction, and the diameter of the first hole is smaller than the diameter of the second hole. Therefore, it is possible to guide a puncture needle with a smaller needle diameter through the smaller first hole, or to disassemble the first connector and the second connector and guide a puncture needle with a larger needle diameter through the larger second hole. This allows for the use of puncture needles of different specifications and provides good versatility.

[0032] Alternatively, since the first connector is provided with a first hole, the axis of the first hole is parallel to the first direction, and the interior of the first hole is provided with a first flexible structure, the first flexible structure includes multiple first flexible arms, which are spaced apart around the axis of the first hole. One end of the first flexible arm is connected to the inner wall of the first hole, and the other end of the first flexible arm is a free end. The length direction of the first flexible arm is set at an angle to the radial direction of the first hole. Therefore, when puncture needles of different diameters are inserted into the first hole, the multiple first flexible arms can maintain the same movement state. Their free ends can form a corresponding circular hole. The circular hole and the puncture needle cooperate to achieve sliding with low resistance and ensure high guiding accuracy. This allows the first hole to be used with puncture needles of different specifications, achieving stepless change, and thus can be used with puncture needles of different specifications, with good versatility.

[0033] Alternatively, since the first connector is provided with a first hole, the axis of the first hole is parallel to the first direction; the first connector includes a first part and a second part, the first part and the second part are distributed along a second direction parallel to the first direction and surround the first hole, and the distance between the first part and the second part is adjustable, so the size of the first hole can be adjusted by adjusting the distance between the first part and the second part, so as to guide puncture needles of different diameters through the first hole, thereby making it suitable for puncture needles of different specifications and having better versatility. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 This is a schematic diagram of the structure of the interventional surgical end in one embodiment of this application;

[0036] Figure 2 yes Figure 1 A schematic diagram of the guiding device at the end of an interventional procedure is shown.

[0037] Figure 3 yes Figure 2 The diagram shown is an exploded view of the guide device.

[0038] Figure 4 yes Figure 2 The cross-sectional view of the guide device shown;

[0039] Figure 5 yes Figure 4 A cross-sectional view of the second connector in the guide device shown;

[0040] Figure 6 This is a schematic diagram of the guide device in another embodiment of this application;

[0041] Figure 7 yes Figure 6 The diagram shown is an exploded view of the guide device.

[0042] Figure 8 This is a schematic diagram of the guide device in another embodiment of this application;

[0043] Figure 9 yes Figure 8 The diagram shown is an exploded view of the guide device.

[0044] Figure 10 This is a schematic diagram of the structure of the second connector in one embodiment of this application;

[0045] Figure 11 yes Figure 10 A top view of the second connector shown;

[0046] Figure 12 This is a schematic diagram of the guide device in another embodiment of this application;

[0047] Figure 13 yes Figure 12 The cross-sectional view of the guide device is shown.

[0048] The markings in the diagram mean:

[0049] 1000, End of interventional surgery;

[0050] 100. Guiding device;

[0051] 10. First connecting component;

[0052] 101. First hole; 102. First protrusion; 103. First groove; 104. Limiting hole; 105. Grip hole; 106. Anti-slip texture;

[0053] 11. First part; 111. First inclined surface; 112. First adsorption element; 12. Second part; 121. Second inclined surface; 122. Second adsorption element; 13. Third part; 14. Connecting part;

[0054] 20. Second connecting component;

[0055] 201, Second hole; 202, Second groove; 203, Second protrusion; 204, Receiving groove; 205, Second flexible structure; 2051, Second flexible arm;

[0056] 21. Separate part; 22. Main body; 23. Fixing and adsorption component;

[0057] 200. Puncture needle. Detailed Implementation

[0058] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0059] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0060] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0061] In this specification, references to "one embodiment," "some embodiments," or simply "embodiment" mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. Furthermore, in one or more embodiments, specific features, structures, or characteristics may be combined in any suitable manner.

[0062] To illustrate the technical solution of this application, the following description is provided in conjunction with specific accompanying drawings and embodiments.

[0063] Please refer to Figures 1 to 5 This application provides a guiding device 100, including a first connector 10 and a second connector 20, which are detachably connected.

[0064] The first connector 10 and the second connector 20 can be detachably connected by means of snap-fit, threaded connection, magnetic connection, screw connection, bolt connection or buckle connection.

[0065] The first connector 10 is provided with a first hole 101, and the second connector 20 is provided with a second hole 201. The first hole 101 and the second hole 201 are arranged sequentially along a first direction. The first hole 101 and the second hole 201 are coaxially arranged. The axis of the first hole 101 and the axis of the second hole 201 are both parallel to the first direction, and the diameter of the first hole 101 is smaller than the diameter of the second hole 201. The first direction can be the direction indicated by arrow M in the figure.

[0066] The second connector 20 can be connected to the interventional surgical end 1000, and can be used in both interventional surgical robot scenarios and manual puncture scenarios. The diameter of the first hole 101 can be the middle value of a single national standard model, and the diameter of the second hole 201 can be the maximum value of a single national standard model size. The first hole 101 can only be adapted to puncture needles 200 (fine needles) of the middle and smaller sizes of the national standard, while the second hole 201 can be adapted to puncture needles 200 (coarse needles) of the middle and larger sizes of the national standard, thereby achieving two-level coverage of the national standard size puncture needle 200.

[0067] The appropriate gear can be selected according to the needle diameter of a model of the puncture needle 200 according to the national standard, thereby improving accuracy. The initial packaging is a finished product assembled from the first connector 10 and the second connector 20. After receiving the guide device 100, the doctor first inserts the puncture needle 200. If the puncture needle 200 with a smaller needle diameter can pass through the first hole 101 and the second hole 201 in sequence, it means that the puncture needle 200 is below the national standard midpoint value. Therefore, it can be directly adapted to the guide device 100, and the smaller puncture needle 200 can be guided through the smaller hole 101. If the puncture needle 200 cannot penetrate the first hole 101, it indicates that the puncture needle 200 is in the range of the upper-middle value of the national standard. At this time, the first connector 10 and the second connector 20 need to be disassembled to expose the second hole 201 of the second connector 20, so that the puncture needle 200 can be adapted to the guide device 100 for puncture, and the larger diameter puncture needle 200 is guided through the larger diameter second hole 201.

[0068] As can be seen from the above, the guiding device 100 provided in this application embodiment has the following advantages: the first connecting member 10 and the second connecting member 20 are detachably connected; the first connecting member 10 is provided with a first hole 101; and the second connecting member 20 is provided with a second hole 201. The first hole 101 and the second hole 201 are arranged sequentially along the first direction, and the first hole 101 and the second hole 201 are coaxially arranged. The axis of the first hole 101 and the axis of the second hole 201 are both parallel to the first direction, and the diameter of the first hole 101 is smaller than the diameter of the second hole 201. Therefore, it can guide the puncture needle 200 with a smaller needle diameter through the smaller first hole 101, or it can disassemble the first connecting member 10 and the second connecting member 20 and guide the puncture needle 200 with a larger needle diameter through the larger second hole 201. Thus, it can be used for puncture needles 200 of different specifications and has good versatility.

[0069] It is understandable that the ends of the first hole 101 and the second hole 201 can be chamfered to facilitate the insertion of the puncture needle 200 into the first hole 101 and the second hole 201.

[0070] It should be noted that the guide device 100 provided in this application embodiment can be independent of a specific robot product. It can perform different positioning / installation features on the second connector 20 according to the structure of different interventional surgical ends 1000, thereby adapting to various percutaneous interventional surgical ends 1000 on the market. The guide device 100 provided in this application embodiment can be produced as a disposable sterile instrument. It can be discarded after use by the doctor through a sterile cover, eliminating the risk and complexity of repeated washing and disinfection. The guide device 100 provided in this application embodiment offers multiple needle guide adjustment schemes, and compared with conventional through-hole needle guides, it can provide higher precision while adapting to puncture needles 200 within different national standard ranges.

[0071] The first connector 10 includes a first limiting part, and the second connector 20 includes a second limiting part. The second limiting part is connected to the first limiting part to restrict the second connector 20 from rotating relative to the first connector 10 around the axis of the first hole 101.

[0072] By adopting the above solution, the second limiting part can be connected with the first limiting part to restrict the rotation of the second connecting member 20 relative to the first connecting member 10 around the axis of the first hole 101.

[0073] It should be noted that one of the first limiting part and the second limiting part can be set as a protrusion, such as a pin or a protrusion, and the other of the first limiting part and the second limiting part can be set as a recess, such as a pin hole or a groove.

[0074] Optionally, multiple first limiting parts and multiple second limiting parts are provided, and the first limiting parts and the second limiting parts are provided in a one-to-one correspondence, with multiple first limiting parts arranged at intervals around the first hole 101.

[0075] This configuration better restricts the rotation of the second connector 20 relative to the first connector 10 around the axis of the first hole 101.

[0076] For example, the first limiting part includes a first protrusion 102 and a first groove 103, and the second limiting part includes a second groove 202 and a second protrusion 203. Multiple first protrusions 102 and multiple second grooves 202 can be provided, and they are arranged in a one-to-one correspondence and cooperate with each other. Multiple first protrusions 102 are arranged at intervals around the first hole 101, and the first groove 103 cooperates with the second protrusion 203.

[0077] Optionally, the first connector 10 includes a first part 11, through which a first hole 101 passes; the second connector 20 includes a split part 21, through which a second hole 201 passes; the first part 11 and the split part 21 are arranged sequentially along a first direction, and the first part 11 abuts against the split part 21.

[0078] With this configuration, the first part 11 can be supported against the split part 21 to restrict the movement of the first part 11 relative to the split part 21 in the first direction.

[0079] It should be noted that the first part 11 and the split part 21 can be detachably connected by means of snap-fit, threaded connection, magnetic connection, screw connection, bolt connection or snap-fit ​​connection.

[0080] As one possible implementation, the first connector 10 also includes a second part 12, the first part 11 and the second part 12 are arranged sequentially and connected along a first direction, and the second part 12 is detachably held in the split part 21 to restrict the first part 11 from moving in a direction away from the split part 21.

[0081] With this configuration, the second part 12 can be detachably held in place by the split part 21 to restrict the movement of the first part 11 in a direction away from the split part 21. With the first part 11 abutting against the split part 21, the first part 11 and the split part 21 can be relatively fixed in a direction parallel to the first direction.

[0082] It should be noted that the first protrusion 102 can be configured as a spherical protrusion formed on the first part 11, and the second groove 202 can be configured as a spherical groove formed on the split part 21. When installing the first connector 10, the spherical protrusion of the first part 11 is aligned with the spherical groove of the split part 21 and pushed in horizontally to ensure no wobbling in the circumferential direction. At the same time, the second part 12 can ensure no wobbling in the axial direction.

[0083] The split portion 21 may be provided with a receiving groove 204, and a portion of the second portion 12 is disposed within the receiving groove 204 to limit the second portion 12. The outer surface of the first portion 11 may be provided with anti-slip texture 106 to facilitate the separation of the first portion 11 from the split portion 21. The first portion 11 and the second portion 12 may be integrally formed or separately provided.

[0084] Optionally, the first connector 10 further includes a third part 13, the first part 11 and the third part 13 are arranged sequentially along the first direction, the third part 13 is provided with a limiting hole 104, the limiting hole 104 is coaxially arranged with the first hole 101, the second hole 201 is arranged sequentially with the limiting hole 104, and the diameter of the first hole 101 is equal to the diameter of the limiting hole 104.

[0085] With this configuration, the smaller diameter puncture needle 200 can pass through the first hole 101, the second hole 201 and the limiting hole 104 in sequence. The smaller diameter puncture needle 200 can be guided by the smaller diameter first hole 101 and the limiting hole 104, thereby improving the stability of the guiding process.

[0086] It should be noted that the first part 11 and the second part 12 can be integrally formed or separately configured. Two separate parts 21 can be provided, and the third part 13 can also be connected to the second part 12. The second part 12 connected to the first part 11 is engaged with one of the separate parts 21 to restrict the first part 11 from moving away from the current separate part 21, and the second part 12 connected to the third part 13 is engaged with the other separate part 21 to restrict the third part 13 from moving away from the current separate part 21.

[0087] Please refer to Figure 6 and Figure 7 In some embodiments, the first connector 10 further includes a third part 13, the first part 11 and the third part 13 are arranged sequentially along a first direction, the third part 13 is provided with a limiting hole 104, the limiting hole 104 is coaxially arranged with the first hole 101, the second hole 201 is arranged sequentially with the limiting hole 104, and the diameter of the first hole 101 is equal to the diameter of the limiting hole 104; the first connector 10 further includes a connecting part 14, the first part 11 and the third part 13 are respectively arranged at both ends of the connecting part 14, and two split parts 21 are provided; the second connector 20 further includes a main body 22, the two split parts 21 are respectively arranged at both ends of the main body 22, and both split parts 21 are located between the first part 11 and the third part 13, the first part 11 abuts against one of the split parts 21, and the third part 13 abuts against the other split part 21.

[0088] By adopting the above solution, the first part 11 can be held against one of the split parts 21, and the third part 13 can be held against the other split part 21, so as to achieve relative fixation of the first connector 10 and the second connector 20 in a direction parallel to the first direction.

[0089] It should be noted that the main body 22 and the split part 21 can be integrally formed or separately provided. The connecting part 14 may be provided with a gripping hole 105 to facilitate the disassembly of the first connecting member 10 and the second connecting member 20 through the gripping hole 105.

[0090] Optionally, the diameter of the split part 21 is larger than the diameter of the main body part 22.

[0091] This design facilitates the clamping and positioning of the second connector 20 by the distal end of the interventional procedure 1000.

[0092] It is understood that, in a second direction perpendicular to the first direction, the split portion 21 protrudes from the main body portion 22. The second direction can be the direction indicated by arrow N in the figure, and the second direction can be parallel to the radial direction of the second hole 201. The main body portion 22 and the two split portions 21 can be in the shape of an "I".

[0093] Please refer to Figure 8 and Figure 9 In some embodiments, one of the first connector 10 and the second connector 20 is provided with an external thread, and the other of the first connector 10 and the second connector 20 is provided with an internal thread that mates with the external thread. The external thread is coaxially arranged with the first hole 101.

[0094] By adopting the above solution, the detachable connection between the first connector 10 and the second connector 20 can be achieved relatively easily.

[0095] It is understood that the first connector 10 may include a first part 11 and a third part 13, both of which are provided with internal threads, and the two ends of the second connector 20 are respectively provided with external threads.

[0096] Please refer to Figure 10 and Figure 11In some embodiments, a first flexible structure is provided inside the first hole 101. The first flexible structure includes a plurality of first flexible arms, which are spaced apart around the axis of the first hole 101. One end of the first flexible arm is connected to the inner wall of the first hole 101, and the other end of the first flexible arm is a free end. The length direction of the first flexible arm is set at an angle to the radial direction of the first hole 101. And / or, a second flexible structure 205 is provided inside the second hole 201. The second flexible structure 205 includes a plurality of second flexible arms 2051, which are spaced apart around the axis of the second hole 201. One end of the second flexible arm 2051 is connected to the inner wall of the second hole 201, and the other end of the second flexible arm 2051 is a free end. The length direction of the second flexible arm 2051 is set at an angle to the radial direction of the second hole 201.

[0097] By adopting the above scheme, when inserting puncture needles 200 of different diameters into the first hole 101, the multiple first flexible arms can maintain the same motion state, and their free ends can form a corresponding circular hole. The circular hole and the puncture needle 200 cooperate to achieve sliding with low resistance and ensure high guiding accuracy, so that the first hole 101 can be used for puncture needles 200 of different specifications, achieving stepless change; and / or, when inserting puncture needles 200 of different diameters into the second hole 201, the multiple second flexible arms 2051 can maintain the same motion state, and their free ends can form a corresponding circular hole. The circular hole and the puncture needle 200 cooperate to achieve sliding with low resistance and ensure high guiding accuracy, so that the second hole 201 can be used for puncture needles 200 of different specifications, achieving stepless change.

[0098] It should be noted that both the first flexible arm and the second flexible arm 2051 can be made of silicone or rubber, etc. Up to four first and / or second flexible arms 2051 can be provided. Figure 11 In the embodiment shown, the second flexible arm 2051 can swing counterclockwise around its root. The first flexible arm can also swing counterclockwise around its root.

[0099] Please refer to Figure 12 and Figure 13 Secondly, embodiments of this application provide a guiding device 100, including a first connector 10, the first connector 10 being provided with a first hole 101, the axis of the first hole 101 being parallel to a first direction; the first connector 10 includes a first part 11 and a second part 12, the first part 11 and the second part 12 being distributed along a second direction parallel to the first direction and surrounding the first hole 101, and the distance between the first part 11 and the second part 12 being adjustable.

[0100] The guiding device 100 provided in this application embodiment has a first hole 101 provided in the first connecting member 10, and the axis of the first hole 101 is parallel to the first direction. The first connecting member 10 includes a first part 11 and a second part 12, which are distributed along a second direction parallel to the first direction and surround the first hole 101. The distance between the first part 11 and the second part 12 is adjustable, so the size of the first hole 101 can be adjusted by adjusting the distance between the first part 11 and the second part 12. This allows for the guidance of puncture needles 200 with different needle diameters through the first hole 101, thereby making it suitable for puncture needles 200 of different specifications and providing good versatility.

[0101] It should be noted that the first part 11 and the second part 12 can be connected together by bolts or screws. Threaded holes can be provided on both the first part 11 and the second part 12, and the distance between the first part 11 and the second part 12 can be adjusted by rotating the bolts or screws.

[0102] Optionally, the guide device 100 further includes a second connector 20, which has a second hole 201. The first hole 101 is coaxially arranged with the second hole 201. The first part 11 and the second part 12 are both accommodated in the second hole 201. The outer surface of the first part 11 includes a first inclined surface 111, and the outer surface of the second part 12 includes a second inclined surface 121. The inner wall of the second hole 201 is provided with a frustum surface. The first inclined surface 111 and the second inclined surface 121 are slidably attached to the frustum surface. The first part 11 and the second part 12 are detachably connected to the second connector 20, and the first part 11 and the second part 12 can move together relative to the second connector 20 in a direction parallel to the first direction.

[0103] With this configuration, the distance between the first part 11 and the second part 12 can be adjusted by moving the first part 11 and the second part 12 together relative to the second connector 20 in a direction parallel to the first direction.

[0104] Both the first part 11 and the second part 12 can be detachably connected by means of snap-fit, threaded connection, magnetic connection, screw connection, bolt connection or buckle connection.

[0105] As one possible implementation method, the inner wall of the second hole 201 is provided with a plurality of fixed adsorption elements 23, the plurality of fixed adsorption elements 23 are spaced apart along the first direction, the outer surface of the first part 11 is provided with a first adsorption element 112, the outer surface of the second part 12 is provided with a second adsorption element 122, the first adsorption element 112 is magnetically connected to a portion of the fixed adsorption elements 23, and the second adsorption element 122 is magnetically connected to a portion of the fixed adsorption elements 23.

[0106] By adopting the above scheme, after the first part 11 and the second part 12 can be moved together relative to the second connector 20 in a direction parallel to the first direction, the positions of the first part 11 and the second part 12 can be fixed by magnetic connection between the first adsorption member 112 and part of the fixed adsorption member 23, and magnetic connection between the second adsorption member 122 and part of the fixed adsorption member 23, so as to facilitate the subsequent stable guidance of the puncture needle 200 through the first hole 101.

[0107] It should be noted that one of the first adsorption element 112 and the fixed adsorption element 23 may be a magnet, and the other may be a magnetic metal; or, both the first adsorption element 112 and the fixed adsorption element 23 may be magnets. Similarly, one of the second adsorption element 122 and the fixed adsorption element 23 may be a magnet, and the other may be a magnetic metal; or, both the second adsorption element 122 and the fixed adsorption element 23 may be magnets.

[0108] For example, in Figure 13 In the embodiment shown, the doctor can make the entire first connecting piece 10 move along the frustum by pushing the first part 11 and the second part 12, and it is locked by the fixed suction piece 23 and will not move. When the first part 11 and the second part 12 move up and down, the first part 11 and the second part 12 will move away from each other or move closer to each other, which causes the aperture of the first hole 101 to change, corresponding to the switching of the guide position of the guide device 100.

[0109] Optionally, the interior of the first hole 101 is provided with a first flexible structure, which includes a plurality of first flexible arms. The plurality of first flexible arms are spaced apart around the axis of the first hole 101. One end of the first flexible arm is connected to the inner wall of the first hole 101, and the other end of the first flexible arm is a free end. The length direction of the first flexible arm is set at an angle to the radial direction of the first hole 101.

[0110] With this configuration, when inserting puncture needles 200 of different diameters into the first hole 101, the multiple first flexible arms can maintain the same motion state, and their free ends can form a corresponding circular hole. The circular hole and the puncture needle 200 cooperate to achieve sliding with low resistance and ensure high guiding accuracy, so that the first hole 101 can be used with puncture needles 200 of different specifications without changing the hole diameter, achieving stepless change.

[0111] Please refer to Figure 1 Of Figure 13 This application embodiment also provides an interventional surgical end device 1000, which includes the aforementioned guide device 100.

[0112] The interventional surgical end device 1000 provided in this application embodiment is detachably connected to the first connector 10 and the second connector 20. The first connector 10 is provided with a first hole 101, and the second connector 20 is provided with a second hole 201. The first hole 101 and the second hole 201 are arranged sequentially along a first direction. The first hole 101 and the second hole 201 are coaxially arranged. The axis of the first hole 101 and the axis of the second hole 201 are both parallel to the first direction. Moreover, the diameter of the first hole 101 is smaller than the diameter of the second hole 201. Therefore, it can guide the puncture needle 200 with a smaller needle diameter through the smaller first hole 101, or it can disassemble the first connector 10 and the second connector 20 and guide the puncture needle 200 with a larger needle diameter through the larger second hole 201. Thus, it can be used for puncture needles 200 of different specifications and has good versatility.

[0113] Alternatively, since the first connector 10 is provided with a first hole 101, the axis of the first hole 101 is parallel to the first direction, and the interior of the first hole 101 is provided with a first flexible structure, the first flexible structure includes multiple first flexible arms, the multiple first flexible arms are spaced apart around the axis of the first hole 101, one end of the first flexible arm is connected to the inner wall of the first hole 101, the other end of the first flexible arm is a free end, and the length direction of the first flexible arm is set at an angle to the radial direction of the first hole 101. Therefore, when puncture needles 200 of different diameters are inserted into the first hole 101, the multiple first flexible arms can ensure the same movement state, and their free ends can form a corresponding circular hole. The circular hole and the puncture needle 200 cooperate to achieve sliding with low resistance and ensure high guiding accuracy, so that the first hole 101 can be used for puncture needles 200 of different specifications, achieving stepless change, and thus can be used for puncture needles 200 of different specifications, with good versatility.

[0114] Alternatively, since the first connector 10 is provided with a first hole 101, the axis of the first hole 101 is parallel to the first direction; the first connector 10 includes a first part 11 and a second part 12, the first part 11 and the second part 12 are distributed along a second direction parallel to the first direction and surround the first hole 101, and the distance between the first part 11 and the second part 12 is adjustable, so the size of the first hole 101 can be adjusted by adjusting the distance between the first part 11 and the second part 12, so as to guide puncture needles 200 with different needle diameters through the first hole 101, thereby making it suitable for puncture needles 200 of different specifications and having better versatility.

[0115] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application 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 of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A guide device, characterized in that It includes a first connector (10) and a second connector (20), which are detachably connected; the first connector (10) is provided with a first hole (101), and the second connector (20) is provided with a second hole (201). The first hole (101) and the second hole (201) are arranged sequentially along a first direction. The first hole (101) and the second hole (201) are coaxially arranged. The axis of the first hole (101) and the axis of the second hole (201) are both parallel to the first direction, and the diameter of the first hole (101) is smaller than the diameter of the second hole (201).

2. The guide device of claim 1, wherein, The first connector (10) includes a first limiting part, and the second connector (20) includes a second limiting part. The second limiting part is connected to the first limiting part to restrict the second connector (20) from rotating about the axis of the first hole (101) relative to the first connector (10).

3. The guiding device according to claim 2, characterized in that, Multiple first limiting parts and multiple second limiting parts are provided, and the first limiting parts and the second limiting parts are provided in a one-to-one correspondence. Multiple first limiting parts are arranged at intervals around the first hole (101).

4. The guiding device according to claim 1, characterized in that, The first connector (10) includes a first part (11) through which the first hole (101) passes; the second connector (20) includes a split part (21) through which the second hole (201) passes; the first part (11) and the split part (21) are arranged sequentially along the first direction, and the first part (11) abuts against the split part (21).

5. The guiding device according to claim 4, characterized in that, The first connector (10) further includes a second part (12), the first part (11) and the second part (12) are arranged sequentially and connected along the first direction, and the second part (12) is detachably held in the split part (21) to restrict the first part (11) from moving in a direction away from the split part (21).

6. The guiding device according to claim 4, characterized in that, The first connector (10) further includes a third part (13), the first part (11) and the third part (13) are arranged sequentially along the first direction, the third part (13) is provided with a limiting hole (104), the limiting hole (104) is coaxially arranged with the first hole (101), the second hole (201) is arranged sequentially with the limiting hole (104), and the diameter of the first hole (101) is equal to the diameter of the limiting hole (104).

7. The guiding device according to claim 6, characterized in that, The first connector (10) further includes a connecting portion (14), the first portion (11) and the third portion (13) are respectively disposed at both ends of the connecting portion (14), and two split portions (21) are provided. The second connector (20) further includes a main body portion (22), and two split portions (21) are respectively disposed at both ends of the main body portion (22), and both split portions (21) are located between the first portion (11) and the third portion (13). The first portion (11) abuts against one of the split portions (21), and the third portion (13) abuts against the other split portion (21).

8. The guiding device according to claim 7, characterized in that, The diameter of the split part (21) is larger than the diameter of the main body part (22).

9. The guiding device according to claim 1, characterized in that, One of the first connector (10) and the second connector (20) is provided with an external thread, and the other of the first connector (10) and the second connector (20) is provided with an internal thread that mates with the external thread. The external thread is coaxially arranged with the first hole (101).

10. The guiding device according to any one of claims 1 to 9, characterized in that, The first hole (101) is provided with a first flexible structure inside, the first flexible structure including a plurality of first flexible arms, the plurality of first flexible arms being spaced apart around the axis of the first hole (101), one end of the first flexible arm being connected to the inner wall of the first hole (101), the other end of the first flexible arm being a free end, and the length direction of the first flexible arm being set at an angle to the radial direction of the first hole (101); and / or, the second hole (201) is provided with a second flexible structure (205) inside, the second flexible structure (205) including a plurality of second flexible arms (2051), the plurality of second flexible arms (2051) being spaced apart around the axis of the second hole (201), one end of the second flexible arm (2051) being connected to the inner wall of the second hole (201), the other end of the second flexible arm (2051) being a free end, and the length direction of the second flexible arm (2051) being set at an angle to the radial direction of the second hole (201).

11. A guiding device, characterized in that, The device includes a first connector (10), which has a first hole (101) with the axis of the first hole (101) parallel to a first direction. The first connector (10) includes a first part (11) and a second part (12), which are distributed along a second direction parallel to the first direction and enclose the first hole (101). The distance between the first part (11) and the second part (12) is adjustable.

12. The guiding device according to claim 11, characterized in that, The guiding device (100) further includes a second connector (20), which has a second hole (201). The first hole (101) and the second hole (201) are coaxially arranged. The first part (11) and the second part (12) are both accommodated in the second hole (201). The outer surface of the first part (11) includes a first inclined surface (111), and the outer surface of the second part (12) includes a second inclined surface (121). The inner wall of the second hole (201) is provided with a frustum. The first inclined surface (111) and the second inclined surface (121) are slidably attached to the frustum. The first part (11) and the second part (12) are detachably connected to the second connector (20), and the first part (11) and the second part (12) can move together relative to the second connector (20) in a direction parallel to the first direction.

13. The guiding device according to claim 12, characterized in that, The inner wall of the second hole (201) is provided with a plurality of fixed adsorption elements (23), which are spaced apart along the first direction. The outer surface of the first part (11) is provided with a first adsorption element (112), and the outer surface of the second part (12) is provided with a second adsorption element (122). The first adsorption element (112) is magnetically connected to a portion of the fixed adsorption elements (23), and the second adsorption element (122) is magnetically connected to a portion of the fixed adsorption elements (23).

14. The guiding device according to claim 11, characterized in that, The first hole (101) is provided with a first flexible structure. The first flexible structure includes a plurality of first flexible arms. The plurality of first flexible arms are arranged at intervals around the axis of the first hole (101). One end of the first flexible arm is connected to the inner wall of the first hole (101). The other end of the first flexible arm is a free end. The length direction of the first flexible arm is set at an angle to the radial direction of the first hole (101).

15. A guiding device, characterized in that, The device includes a first connector (10), which has a first hole (101) with the axis of the first hole (101) parallel to a first direction. The first hole (101) has a first flexible structure inside it, which includes a plurality of first flexible arms. The plurality of first flexible arms are spaced apart around the axis of the first hole (101). One end of the first flexible arm is connected to the inner wall of the first hole (101), and the other end of the first flexible arm is a free end. The length direction of the first flexible arm is set at an angle to the radial direction of the first hole (101).

16. The guiding device according to claim 15, characterized in that, The guiding device further includes a second connector (20), and the first connector (10) and the second connector (20) are detachably connected; the second connector (20) is provided with a second hole (201), the first hole (101) and the second hole (201) are arranged sequentially along the first direction, the first hole (101) and the second hole (201) are coaxially arranged, and the diameter of the first hole (101) is smaller than the diameter of the second hole (201).

17. The guiding device according to claim 15, characterized in that, The first connector (10) includes a first part (11) and a second part (12), the first part (11) and the second part (12) are distributed along a second direction parallel to the first direction and surround the first hole (101), and the distance between the first part (11) and the second part (12) is adjustable.

18. An interventional surgical distal end, characterized in that, The interventional surgical end (1000) includes a guide device (100) as described in any one of claims 1 to 10, or a guide device (100) as described in any one of claims 11 to 14, or a guide device (100) as described in any one of claims 15 to 17.

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