Connection mechanism and puncture device

Abstract

The application relates to the technical field of medical equipment, and discloses a connecting mechanism and a puncture device, which comprise a first connecting assembly and a second connecting assembly, the first connecting assembly comprises a first connecting seat, the second connecting assembly comprises a second connecting seat, a locking piece and an unlocking piece, one of the locking piece and the unlocking piece is provided with a guide groove, the other is connected with a guide part, the guide part is inserted into the guide groove along a first direction, the guide groove extends in a plane perpendicular to the first direction, and the extension direction of the guide groove is inclined to a second direction; the locking piece is in sliding connection with the second connecting seat and can move relatively along the second direction; the locking piece locks the second connecting seat and the first connecting seat, the unlocking piece can rotate relatively along the circumference of the second connecting seat, and the locking piece is driven to move away from the first connecting seat along the second direction through cooperation of the guide groove and the guide part; the locking piece can be driven to move away from the first connecting seat along the second direction to realize unlocking through rotation of the unlocking piece, the operation is convenient and fast, and the smooth operation is ensured.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and in particular to a connection mechanism and a puncture device. Background Technology

[0002] In laparoscopic surgery, the trocar is a crucial device for establishing instrument access. In related techniques, the connection between mechanisms often employs a snap-locking mechanism. However, this type of mechanism has drawbacks, especially when the medical staff's gloves are contaminated with liquid or tissue fluid. Insufficient pressure or slippage of the snap-lock can lead to unlocking failure on the first attempt, increasing the complexity and time cost of the surgical procedure. Summary of the Invention

[0003] This application aims to address at least one of the technical problems existing in the prior art. To this end, this application proposes a connection mechanism that enables convenient and quick unlocking.

[0004] This application also proposes a puncture device having the above-mentioned connecting mechanism.

[0005] According to a first aspect embodiment of this application, a connecting mechanism has a first direction and a second direction that are perpendicular to each other. The connecting mechanism has a circumferential direction surrounding the first direction. The connecting mechanism includes a first connecting component and a second connecting component. The first connecting component includes a first connecting seat, which includes a first seat body and a connecting portion. The second connecting component includes a second connecting seat, a locking member, and an unlocking member. One of the locking member and the unlocking member is provided with a guide groove, and the other is connected with a guide portion. The guide portion is inserted into the guide groove along the first direction. The guide groove extends in a plane perpendicular to the first direction, and the extension direction of the guide groove is inclined to the second direction. The locking member is slidably connected to the second connecting seat, and the locking member is movable relative to the second connecting seat along the second direction. Wherein, the connecting part is located on the side of the first seat body facing the second connecting seat in the first direction. The locking member locks the second connecting seat and the connecting part. The unlocking member can rotate relative to the second connecting seat in the circumferential direction and is driven to disengage from the connecting part in the second direction by the cooperation of the guide groove and the guide part.

[0006] The connecting mechanism according to the embodiments of this application has at least the following beneficial effects: by providing a guide groove and a guide portion, rotating the unlocking member can drive the locking member to move along the second direction, so that the locking member disengages from the connecting portion to achieve unlocking, which is convenient and quick to operate and ensures the smooth progress of the operation.

[0007] According to some embodiments of this application, the second connecting component satisfies at least one of the following conditions: a. The wall of the guide groove in the second direction is a curved surface; b. The surface of the guide portion in the second direction is curved; c. One of the locking member and the unlocking member is provided with the guide groove, and the other is rotatably connected to the guide portion.

[0008] According to some embodiments of this application, one of the second connecting seat and the unlocking member is provided with a limiting groove, and the other is connected with a limiting part. The limiting groove extends along the circumferential direction, and the limiting part is inserted into the limiting groove. The limiting part is capable of moving along the circumferential direction within the limiting groove.

[0009] According to some embodiments of this application, one of the second connecting seat and the unlocking member is further connected with a backstop, the backstop being located in the limiting groove, and the backstop being spaced apart from the end of the limiting groove in the circumferential direction; the limiting part is capable of abutting against and passing over the backstop in the limiting groove along the circumferential direction.

[0010] According to some embodiments of this application, the unlocking element satisfies one of the following conditions: a. The unlocking component includes a connected unlocking body and a first actuating part, the first actuating part being located on the circumferential outer side of the unlocking body, one of the locking component and the unlocking body being provided with the guide groove, and the other being connected to the guide part; b. The unlocking component includes the unlocking body and the first actuating part connected together, the first actuating part being located on the circumferential outer side of the unlocking body; the second connecting seat includes the second seat body and the second actuating part connected together, the second actuating part being located on the circumferential outer side of the second seat body, the second actuating part and the first actuating part being spaced apart along the circumferential direction; one of the second seat body and the unlocking body is provided with the guide groove, and the other is connected with the guide part; c. The unlocking component includes the unlocking body and the first actuating part connected together, the first actuating part being located on the circumferential outer side of the unlocking body; the second connecting seat includes the second seat body and a plurality of second actuating parts connected together, the plurality of second actuating parts being arranged at intervals along the circumferential direction on the circumferential outer side of the second seat body, the first actuating part being located between adjacent second actuating parts; one of the second seat body and the unlocking body is provided with the guide groove, and the other is connected with the guide part.

[0011] According to some embodiments of this application, the locking member includes a locking body, which includes a first part, a second part, and a third part. The first part is slidably connected to the second connecting seat, and the second part connects the first part and the third part. The second part is located on the outside of the connecting portion along the second direction. The third part is located on the side of the connecting portion facing the first seat in the first direction. The third part clamps the connecting portion with the second connecting seat. Alternatively, the second connecting seat has a groove on one side in the second direction, and the third part is inserted into the groove.

[0012] According to some embodiments of this application, the second connecting seat includes a second seat body and a rotating part connected together. The rotating part is located on the side of the second seat body facing the first seat body. The first seat body is provided with a through hole extending along the first direction. The rotating part is inserted into the through hole and can rotate relative to the first seat body. The first connecting assembly also includes a sealing member, which is located between the rotating part and the first seat body.

[0013] According to some embodiments of this application, the through hole includes a first hole segment and a second hole segment that communicate with each other. The first hole segment is located on the side of the second hole segment facing the locking member. The first hole segment is located on the outer side of the second hole segment along the second direction. The second hole segment is located on the outer side of the rotating part along the second direction. The rotating part is inserted into the second hole segment. The first seat body is provided with a receiving groove. The receiving groove is located on the outer side of the first hole segment along the second direction. The sealing member includes a first sealing part and a second sealing part. The first sealing part is received in the receiving groove. The second sealing part is connected to the first sealing part and extends into the first hole segment. The second sealing part abuts against the outer surface of the rotating part in the second direction.

[0014] According to some embodiments of this application, the locking member includes a connected locking body and a pressing part, the locking body locking the second connecting seat and the connecting part, and the pressing part being located outside the locking body in the second direction; wherein, the dimension of the pressing part in the first direction is greater than the dimension of the locking body in the first direction, and / or, the dimension of the pressing part in the circumferential direction is greater than the dimension of the locking body in the circumferential direction.

[0015] According to some embodiments of this application, the second connecting assembly includes an assembly part, the assembly part including a first assembly part and a second assembly part, the first assembly part and the second connecting seat clamping the unlocking member in the first direction, and the second assembly part connecting the first assembly part and the second connecting seat.

[0016] A puncture device according to a second aspect embodiment of this application includes a puncture mechanism, an instrument channel mechanism, and a connecting mechanism as described in any of the above embodiments. One of the first connecting component and the second connecting component is connected to the puncture mechanism, and the other is connected to the instrument channel mechanism. The instrument channel mechanism, the connecting mechanism, and the puncture mechanism are arranged sequentially along the first direction.

[0017] The puncture device according to the embodiments of this application has at least the following beneficial effects: by applying the connecting mechanism of the embodiments of this application, the quick locking or unlocking between the puncture mechanism and the instrument channel mechanism can be realized, ensuring the smooth progress of the operation.

[0018] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0019] The present application will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 This is a schematic diagram of the puncture device according to an embodiment of this application; Figure 2 for Figure 1 A schematic diagram of the explosion of the puncture device; Figure 3 for Figure 2 A partially enlarged schematic diagram of the connecting mechanism; Figure 4 This is a schematic diagram of the connection mechanism in the locked state according to an embodiment of this application; Figure 5 This is a schematic diagram of the connection mechanism in the unlocked state according to an embodiment of this application; Figure 6 This is a cross-sectional view of the puncture device according to an embodiment of this application along the plane containing the rotation axis of the unlocking member, wherein the puncture device is in the locked state; Figure 7 This is a cross-sectional view of the puncture device according to an embodiment of this application along the plane containing the rotation axis of the rotating part, wherein the puncture device is in the unlocked state; Figure 8 A cross-sectional view of the first connecting component taken along a section parallel to the first direction.

[0020] Figure label: Instrument channel mechanism 10; connecting mechanism 20; puncture mechanism 30; First connecting assembly 100, first connecting seat 110, first seat body 111, connecting part 112, through hole 120, first hole section 121, second hole section 122, receiving groove 130, sealing element 140, first sealing part 141, second sealing part 142; The components include: a second connecting assembly 200, a second connecting seat 210, a limiting part 220, a second seat body 230, a second actuating part 240, and a rotating part 250. Locking component 300, guide part 310, locking body 320, first part 321, second part 322, third part 323, pressing part 330; Unlocking component 400, guide groove 410, limiting groove 420, unlocking body 430, first actuating part 440, and anti-reverse part 450; 500 for accessories; First direction Z; circumferential direction X. Detailed Implementation

[0021] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0022] In the description of this application, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application 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. Therefore, they should not be construed as limitations on this application.

[0023] In the description of this application, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0024] In the description of this application, unless otherwise expressly defined, terms such as "setup," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this application in conjunction with the specific content of the technical solution.

[0025] In the description of this application, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0026] To address the problems in related technologies, this application provides a connecting mechanism with a guide groove and a guide portion, which converts the rotation of the unlocking member into the horizontal movement of the locking member along a second direction, eliminating the need for pressing and applying a large unlocking force, making unlocking convenient and quick.

[0027] The connection mechanism and puncture device of the present application are described below with reference to the accompanying drawings.

[0028] Reference Figures 1 to 5 According to a first aspect embodiment of this application, the connecting mechanism 20 has a first direction Z and a second direction that are perpendicular to each other. The first direction Z can be considered as the axial direction of the puncture action of the puncture device, and the second direction can be considered as the radial direction of the puncture action of the puncture device. The connecting mechanism 20 also has a circumferential direction X surrounding the first direction Z. The connecting mechanism 20 includes a first connecting assembly 100 and a second connecting assembly 200. The first connecting assembly 100 includes a first connecting seat 110, which includes a first seat body 111 and a connecting portion 112 connected together. The second connecting assembly 200 includes a second connecting seat 210, a locking member 300, and an unlocking member 400. One of the locking member 300 and the unlocking member 400 is provided with a guide groove 410, and the other is connected with a guide portion 310. The guide portion 310 is inserted into the guide groove 410 along the first direction Z. The guide groove 410 extends in a plane perpendicular to the first direction Z, and the extension direction of the guide groove 410 is inclined to the second direction. The locking member 300 is slidably connected to the second connecting seat 210, and the locking member 300 can move relative to the second connecting seat 210 in a second direction.

[0029] The connecting part 112 is located on the side of the first seat 111 facing the second connecting seat 210 in the first direction Z. When the connecting mechanism 20 is in the locked state, the locking member 300 acts on the second connecting seat 210 and the connecting part 112 to prevent the first connecting seat 110 and the second connecting seat 210 from disengaging from each other, thus achieving locking. The unlocking member 400 can rotate relative to the second connecting seat 210 in the circumferential direction X. When unlocking is required, driving the unlocking member 400 to rotate will cause the locking member 300 to disengage from the connecting part 112 in the second direction through the cooperation of the guide groove 410 and the guide part 310, thus achieving unlocking. The operation is convenient and quick, ensuring the smooth progress of the surgery.

[0030] Specifically, the unlocking component 400 and the second connecting seat 210 can fit together, and relative rotation can be achieved after overcoming friction. During assembly, the unlocking component 400 and the second connecting seat 210 are coaxially arranged to ensure stable relative rotation. Here, coaxial arrangement can be understood as the rotation axes of the unlocking component 400 and the second connecting seat 210 being collinear, the rotation axis of the unlocking component 400 being in the same direction as the first direction Z, and located at the geometric center of the unlocking component 400.

[0031] In some embodiments, refer to Figure 1 and Figure 4 The second connecting component 200 is provided with multiple guide grooves 410 and multiple guide parts 310. Each guide groove 410 is arranged at intervals along the circumferential direction X, and each guide part 310 is inserted into each guide groove 410. The arrangement of multiple guide grooves 410 and multiple guide parts 310 provides a uniform guiding force in the circumferential direction X of the connecting mechanism 20, reduces loosening and misalignment, and ensures motion stability.

[0032] In some embodiments, refer to Figure 1 and Figure 3 The unlocking component 400 is provided with a guide groove 410, and the locking component 300 is connected with a guide portion 310. Since the unlocking component 400 is responsible for rotation, setting the guide groove 410 on the unlocking component 400 can make reasonable use of the circumferential dimension of the unlocking component 400. The locking component 300, on the other hand, is responsible for realizing horizontal movement and locking functions along the second direction, and therefore requires a small circumferential dimension in the X direction. Setting the guide portion 310 on the locking component 300 will not increase the circumferential dimension of the locking component 300, which is beneficial for controlling the overall size of the locking component 300.

[0033] In some embodiments, refer to Figure 3 The guide groove 410 has a curved wall surface in the second direction, so that when it contacts the guide portion 310, the contact area is an arc-shaped contact. This arc-shaped contact effectively reduces frictional resistance during sliding, thus requiring less operating force to drive the locking portion 300 when the unlocking portion 400 rotates, resulting in smoother movement. Similarly, the curved surface of the guide portion 310 in the second direction also reduces frictional resistance. Specifically, the wall surface of the guide portion 310 in the second direction is a convex curved surface. The guide groove 410 has a first sub-wall surface and a second sub-wall surface that are spaced apart and opposite to each other in the second direction. One of the first sub-wall surface and the second sub-wall surface is concave in the second direction to form an arc surface, and the other is convex in the second direction to form an arc surface, so that the guide groove 410 is formed as an arc-shaped groove. During movement, the wall surface of the guide portion 310 contacts at least one of the first sub-wall surface and the second sub-wall surface to form an arc-shaped contact.

[0034] In some embodiments, refer to Figure 3 One of the locking component 300 and the unlocking component 400 is provided with a guide groove 410, and the other is rotatably connected with a guide portion 310. By setting the guide portion 310 to a rotatable connection method (for example, providing a ball or bearing on the outer circumferential direction of the guide portion 310), the "sliding friction" between the guide groove 410 and the guide portion 310 is transformed into "rolling friction," further reducing friction and making the entire locking and unlocking process more effortless and smooth, and reducing wear on components caused by long-term friction.

[0035] In some embodiments, refer to Figure 1 , reference Figures 3 to 5 One of the second connecting seat 210 and the unlocking member 400 is provided with a limiting groove 420, and the other is connected to a limiting part 220. The limiting groove 420 extends in the circumferential direction X, and the limiting part 220 is inserted into the limiting groove 420, allowing the limiting part 220 to move in the circumferential direction X within the limiting groove 420. Through the constraint of the limiting part 220 by the limiting groove 420, the relative position of the unlocking member 400 relative to the second connecting seat 210 is always limited by the limiting groove 420 during rotation. The circumferential X movement of the limiting part 220 within the limiting groove 420 ensures that the unlocking member 400 rotates within a predetermined angle range, guaranteeing the accuracy and reliability of the locking action, and enabling the unlocking member 400 to stably drive the locking member 300 during rotation.

[0036] Furthermore, one of the second connecting seat 210 and the unlocking member 400 is also connected to a backstop 450. The backstop 450 is located within the limiting groove 420, and the ends of the backstop 450 and the limiting groove 420 are spaced apart in the circumferential direction X. The limiting member 220 can abut against and pass over the backstop 450 in the circumferential direction X within the limiting groove 420. The backstop 450 forms a partial protrusion in the limiting groove 420. When the limiting member 220 moves in the circumferential direction X within the limiting groove 420 and contacts the backstop 450, it will be blocked by the backstop 450, and additional force is required to push the limiting member 220 over the protrusion. After the limiting member 220 passes over the backstop 450, the backstop 450 then blocks the movement of the limiting member 220 in the opposite direction (unlocking direction). This structure provides the operator with clear tactile feedback, clearly indicating the specific position of the limiting part 220 during its movement, and preventing the limiting part 220 from moving in the opposite direction due to vibration or accidental contact, thus ensuring the smooth progress of the surgery.

[0037] The anti-reverse part 450 can be a separate component, forming a partial protrusion by being connected to the second connecting seat 210 or the unlocking member 400. Alternatively, the anti-reverse part 450 can be integrally formed into the second connecting seat 210 or the unlocking member 400, for example... Figure 4 The anti-reverse portion 450 shown is formed on the circumferential X surface of the unlocking member 400.

[0038] In some embodiments, refer to Figure 3 and Figure 4 The unlocking component 400 includes a connected unlocking body 430 and a first actuating part 440. The first actuating part 440 is located circumferentially outside the unlocking body 430. One of the locking component 300 and the unlocking body 430 is provided with a guide groove 410, and the other is connected with a guide part 310. The first actuating part 440, located circumferentially outside the unlocking body 430, provides a clear point of application for the operator's finger to apply rotational force, facilitating the application of force. Furthermore, this structure increases the lever arm of the point of application relative to the center of rotation, thereby reducing the operating force required to drive the unlocking component 400 to rotate.

[0039] Furthermore, the second connecting seat 210 includes a connected second seat body 230 and a second actuating part 240. The second actuating part 240 is located circumferentially outside the second seat body 230, and is spaced apart from the first actuating part 440 along the circumferential direction X. One of the second seat body 230 and the unlocking body 430 is provided with a guide groove 410, and the other is connected with a guide part 310. The second actuating part 240 provides a force application point for the operator to push the first actuating part 440 on the unlocking member 400. When the operator uses one finger (such as the thumb) to press against the second actuating part 240 and uses another finger (such as the index finger) to hook the first actuating part 440, the unlocking member 400 can be driven to rotate relative to the second connecting seat 210 more stably and with less effort, which can improve the stability and controllability of the operation.

[0040] Furthermore, the second connecting seat 210 includes a plurality of second actuating portions 240, which are arranged at intervals along the circumferential direction X on the outer side of the second seat body 230 in the circumferential direction X. The first actuating portion 440 is located between adjacent second actuating portions 240. The second actuating portions 240 located on both sides of the first actuating portion 440 provide the operator with force points for both forward and reverse rotation, enabling both unlocking and locking actions to be performed more effortlessly and stably.

[0041] In some embodiments, refer to Figure 6 and Figure 7 The locking component 300 includes a locking body 320, which includes a first part 321, a second part 322 and a third part 323. The first part 321 is slidably connected to the second connecting seat 210. The second part 322 connects the first part 321 and the third part 323. The second part 322 is located on the outer side of the connecting part 112 along the second direction.

[0042] The third portion 323 is located on the side of the connecting portion 112 facing the first seat 111 in the first direction Z, and the third portion 323 and the second connecting seat 210 clamp the connecting portion 112. When the third portion 323 and the second connecting seat 210 jointly clamp the connecting portion 112, the connecting portion 112 is restricted between the first seat 111 and the third portion 323 in the first direction Z, and is limited by the second portion 322 in the second direction, thereby preventing the first connecting seat 110 from disengaging in the first direction Z and from undergoing large displacement in the second direction. As another possible implementation, the second connecting seat 210 is provided with a groove (not shown in the figure) on one side in the second direction, and the third portion 323 is inserted into the groove. The groove provides limitation for the third portion 323 in both the first direction Z and the second direction, so as to limit the relative movement of the first connecting seat 110 and the second connecting seat 210 in the first direction Z and the second direction.

[0043] In some embodiments, refer to Figure 7 and Figure 8 The second connecting seat 210 includes a second seat body 230 and a rotating part 250. The rotating part 250 is located on the side of the second seat body 230 facing the first seat body 111. The first seat body 111 is provided with a through hole 120 extending along the first direction Z. The rotating part 250 is inserted into the through hole 120, and the rotating part 250 and the first seat body 111 can rotate relative to each other. The first connecting assembly 100 also includes a sealing member 140, which is located between the rotating part 250 and the first seat body 111. The rotating part 250 is inserted into the through hole 120, so that the outer surface of the rotating part 250 and the inner surface of the through hole 120 cooperate with each other to guide the rotational movement. Furthermore, the sealing element 140 is disposed between the rotating part 250 and the first seat 111. When the first seat 111 and the second connecting seat 210 rotate relative to each other, the sealing element 140 remains in contact between the rotating part 250 and the first seat 111, preventing external fluids or gases from seeping in or escaping through the rotating interface, thus ensuring sealing while achieving the rotation function.

[0044] Specifically, the rotating part 250 and the first base 111 rotate around the rotation axis. The rotation axis of the rotating part 250 is in the same direction as the first direction Z and is located at the geometric center of the rotating part 250.

[0045] Further, the through hole 120 includes a first hole segment 121 and a second hole segment 122 that communicate with each other. The first hole segment 121 is located on the side of the second hole segment 122 facing the locking member 300. The first hole segment 121 is located on the outer side of the second hole segment 122 along the second direction. The second hole segment 122 is located on the outer side of the rotating part 250 along the second direction. The rotating part 250 is inserted into the second hole segment 122. The first seat 111 is provided with a receiving groove 130, which is located on the outer side of the first hole segment 121 along the second direction. The sealing member 140 includes a first sealing part 141 and a second sealing part 142. The first sealing part 141 is received in the receiving groove 130. The second sealing part 142 is connected to the first sealing part 141 and extends into the first hole segment 121. The second sealing part 142 abuts against the outer surface of the rotating part 250 in the second direction.

[0046] The receiving groove 130 provides a mounting base and limit for the first sealing part 141, preventing it from moving along the second direction. The first hole segment 121 is located outside the second hole segment 122 along the second direction, meaning the radial dimension of the first hole segment 121 is larger than the radial dimension of the second hole segment 122. This dimensional difference creates an annular gap between the inner wall of the first hole segment 121 and the outer surface of the rotating part 250. When the second sealing part 142 extends into the first hole segment 121 and abuts against the outer surface of the rotating part 250, this annular gap provides space for the second sealing part 142 to accommodate its deformation. Understandably, during assembly, the rotating part 250 abuts against the second sealing part 142 along the second direction. The second sealing part 142 can be bent within the annular gap. Alternatively, when the contact position between the second sealing part 142 and the outer surface of the rotating part 250 changes during rotation, the second sealing part 142 can adaptively bend into the annular gap without being squeezed or interfered with by the inner wall of the first hole segment 121. This ensures that the sealing element 140 maintains stable contact with the outer surface of the rotating part 250 during rotation, thus maintaining the sealing effect.

[0047] Specifically, the seal 140 can be fixed to the first seat 111 by a separately provided pressure ring, or it can be fixed by bonding, interference fit, or other methods.

[0048] In some embodiments, refer to Figures 3 to 5The locking member 300 includes a locking body 320 and a pressing part 330 connected together. The locking body 320 locks the second connecting seat 210 and the connecting part 112. The pressing part 330 is located on the outer side of the locking body 320 in the second direction. Specifically, the dimension of the pressing part 330 in the first direction Z is larger than the dimension of the locking body 320 in the first direction Z, and / or, the dimension of the pressing part 330 in the circumferential direction X is larger than the dimension of the locking body 320 in the circumferential direction X. The pressing part 330 protrudes outward and is enlarged relative to the locking body 320, making it easy to be touched and force applied by fingers. When the operator applies a force inward along the second direction to the pressing part 330, this force is transmitted through the locking body 320 and drives the locking body 320 to move linearly along the second direction to the locking position with the connecting part 112, thereby quickly locking the connecting mechanism 20. With the cooperation of the guide groove 410 and the guide part 310, the unlocking member 400 also rotates to reset.

[0049] In some embodiments, refer to Figure 2 The second connecting assembly 200 includes a mounting part 500, which includes a first mounting portion and a second mounting portion. The first mounting portion and the second connecting seat 210 clamp the unlocking member 400, and the second mounting portion connects the first mounting portion and the second connecting seat 210. The first mounting portion and the second connecting seat 210 are located on opposite sides of the unlocking member 400 in the first direction Z, and together they clamp the unlocking member 400, restricting its movement along the first direction Z. The second mounting portion connects the first mounting portion and the second connecting seat 210 into a whole, keeping the first mounting portion in a fixed position, thereby maintaining continuous clamping of the unlocking member 400. The mounting part 500 allows the unlocking member 400 to rotate freely around the first direction Z while clamped, and prevents the unlocking member 400 from disengaging along the first direction Z.

[0050] Specifically, the second assembly part and the first assembly part can be connected by means of pre-tensioning, integral molding, snap-fit, etc. The second assembly part and the second connecting seat 210 can also be connected by means of pre-tensioning, snap-fit, etc. More specifically, a buckle is formed on the side of the second assembly part opposite to the first assembly part, and a slot is formed on the second connecting seat 210; the connection between the second assembly part and the second connecting seat 210 is achieved through the cooperation of the buckle and the slot.

[0051] Reference Figure 1 and Figure 2According to a second aspect embodiment of this application, the puncture device includes a puncture mechanism 30, an instrument channel mechanism 10, and a connecting mechanism 20 of any of the above embodiments. One of the first connecting component 100 and the second connecting component 200 is connected to the puncture mechanism 30, and the other is connected to the instrument channel mechanism 10. The instrument channel mechanism 10, the connecting mechanism 20, and the puncture mechanism 30 are arranged sequentially along a first direction Z. By applying the connecting mechanism 20 of this application embodiment, quick locking or unlocking between the puncture mechanism 30 and the instrument channel mechanism 10 can be achieved, and the movement stability is high, ensuring the smooth progress of the surgery.

[0052] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application. Furthermore, unless otherwise specified, the embodiments and features described in the embodiments of this application can be combined with each other.

Claims

1. A connecting mechanism for a puncture device, the connecting mechanism having a first direction and a second direction perpendicular to each other, the connecting mechanism having a circumferential direction surrounding the first direction, characterized in that, The connecting mechanism includes: A first connecting component includes a first connecting seat, the first connecting seat including a first seat body and a connecting portion; The second connecting assembly includes a second connecting seat, a locking member, and an unlocking member. One of the locking member and the unlocking member is provided with a guide groove, and the other is connected with a guide portion. The guide portion is inserted into the guide groove along the first direction. The guide groove extends in a plane perpendicular to the first direction, and the extension direction of the guide groove is inclined to the second direction. The locking member is slidably connected to the second connecting seat, and the locking member is capable of moving relative to the second connecting seat along the second direction. The connecting portion is located on the side of the first seat body facing the second connecting seat in the first direction. The locking member locks the second connecting seat and the connecting portion. The unlocking member can rotate relative to the second connecting seat in the circumferential direction and is driven to disengage from the connecting portion in the second direction by the cooperation of the guide groove and the guide portion.

2. The connecting mechanism according to claim 1, characterized in that, The second connection component satisfies at least one of the following conditions: a. The wall of the guide groove in the second direction is a curved surface; b. The surface of the guide portion in the second direction is curved; c. One of the locking member and the unlocking member is provided with the guide groove, and the other is rotatably connected to the guide portion.

3. The connecting mechanism according to claim 1, characterized in that, One of the second connecting seat and the unlocking member is provided with a limiting groove, and the other is connected with a limiting part. The limiting groove extends along the circumferential direction, and the limiting part is inserted into the limiting groove. The limiting part can move along the circumferential direction in the limiting groove.

4. The connecting mechanism according to claim 3, characterized in that, One of the second connecting seat and the unlocking member is also connected to a backstop, the backstop being located in the limiting groove, and the backstop being spaced apart from the end of the limiting groove in the circumferential direction; the limiting part can abut against and pass over the backstop in the limiting groove along the circumferential direction.

5. The connecting mechanism according to claim 1, characterized in that, The unlocking component satisfies one of the following conditions: a. The unlocking component includes a connected unlocking body and a first actuating part, the first actuating part being located on the circumferential outer side of the unlocking body, one of the locking component and the unlocking body being provided with the guide groove, and the other being connected to the guide part; b. The unlocking component includes the unlocking body and the first actuating part connected together, the first actuating part being located on the circumferential outer side of the unlocking body; the second connecting seat includes the second seat body and the second actuating part connected together, the second actuating part being located on the circumferential outer side of the second seat body, the second actuating part and the first actuating part being spaced apart along the circumferential direction; one of the second seat body and the unlocking body is provided with the guide groove, and the other is connected with the guide part; c. The unlocking component includes the unlocking body and the first actuating part connected together, the first actuating part being located on the circumferential outer side of the unlocking body; the second connecting seat includes the second seat body and a plurality of second actuating parts connected together, the plurality of second actuating parts being arranged at intervals along the circumferential direction on the circumferential outer side of the second seat body, the first actuating part being located between adjacent second actuating parts; one of the second seat body and the unlocking body is provided with the guide groove, and the other is connected with the guide part.

6. The connecting mechanism according to claim 1, characterized in that: The locking component includes a locking body, which comprises a first part, a second part, and a third part. The first part is slidably connected to the second connecting seat, and the second part connects the first part and the third part. The second part is located on the outer side of the connecting portion along the second direction. The third part is located on the side of the connecting portion facing the first seat in the first direction. The third part clamps the connecting portion with the second connecting seat. Alternatively, the second connecting seat has a groove on one side in the second direction, and the third part is inserted into the groove.

7. The connecting mechanism according to claim 1, characterized in that, The second connecting seat includes a second seat body and a rotating part connected together. The rotating part is located on the side of the second seat body facing the first seat body. The first seat body is provided with a through hole extending along the first direction. The rotating part is inserted into the through hole and can rotate relative to the first seat body. The first connecting assembly also includes a sealing member, which is located between the rotating part and the first seat body.

8. The connecting mechanism according to claim 7, characterized in that, The through hole includes a first hole segment and a second hole segment that are connected. The first hole segment is located on the side of the second hole segment facing the locking member. The first hole segment is located on the outer side of the second hole segment along the second direction. The second hole segment is located on the outer side of the rotating part along the second direction. The rotating part is inserted into the second hole segment. The first seat body is provided with a receiving groove. The receiving groove is located on the outer side of the first hole segment along the second direction. The sealing member includes a first sealing part and a second sealing part. The first sealing part is received in the receiving groove. The second sealing part is connected to the first sealing part and extends into the first hole segment. The second sealing part abuts against the outer surface of the rotating part in the second direction.

9. The connecting mechanism according to claim 1, characterized in that, The locking member includes a locking body and a pressing part connected together. The locking body locks the second connecting seat and the connecting part. The pressing part is located outside the locking body in the second direction. The dimension of the pressing part in the first direction is greater than the dimension of the locking body in the first direction, and / or the dimension of the pressing part in the circumferential direction is greater than the dimension of the locking body in the circumferential direction.

10. The connecting mechanism according to claim 1, characterized in that, The second connecting assembly includes an assembly comprising a first assembly portion and a second assembly portion, wherein the first assembly portion and the second connecting seat clamp the unlocking member in the first direction, and the second assembly portion connects the first assembly portion and the second connecting seat.

11. A puncture device, characterized in that, include: Puncture mechanism; Instrument access mechanism; According to any one of claims 1 to 10, in the connecting mechanism, one of the first connecting component and the second connecting component is connected to the puncture mechanism, and the other is connected to the instrument channel mechanism, wherein the instrument channel mechanism, the connecting mechanism, and the puncture mechanism are arranged sequentially along the first direction.

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