Arthroscopic access cannula device

Abstract

The present application provides an arthroscopic access sleeve device, comprising an outer sleeve and an annular buckle; wherein the outer sleeve comprises a first tube body; the first tube body has a first port and a second port opposite to each other; the outer side surface of the first port has a first annular flange; the annular buckle is detachably sleeved on the outer side surface of the first tube body; wherein the annular buckle is provided with a first magnetic member, and the first annular flange is provided with a second magnetic member. The arthroscopic access sleeve device effectively improves the clamping speed, saves the operation time, is simple to operate, reduces the risk of damage to the incision and subcutaneous soft tissue, and also reduces the risk of the outer sleeve falling off.

Description

Technical Field

[0001] The invention relates to the technical field of surgical instruments, and in particular to an arthroscopic approach sleeve device. Background Art

[0002] During arthroscopic surgery, instruments such as lenses, planers, and drills need to enter and exit the surgical channel multiple times to complete joint cavity exploration, cleaning, and repair operations. This is especially true for shoulder arthroscopic surgery, as its internal structure is complex and various arthroscopic instruments need to frequently switch in and out of different channels. At the same time, the soft tissue and muscles of the shoulder are thick, and instruments need to pass through multiple layers of soft tissue to enter the joint cavity from the body surface through the channel. If the direction of entry is slightly changed, it will enter other soft tissues by mistake, resulting in failure to enter the joint cavity smoothly. It takes time to readjust the entry direction, causing unnecessary soft tissue damage.

[0003] At present, shoulder arthroscopy surgery mostly uses threaded cannulas to avoid damage to soft tissues when switching arthroscopic instruments. At present, shoulder arthroscopy surgery cannulas mostly use silicone hoses, which require the use of the threads of the cannula wall and the threads of the ring buckle to achieve clamping, which is inefficient. In addition, because the cannula is made of silicone hose, the part under the soft tissue is easily deformed under the action of external force, causing the cannula to fall off. Summary of the invention

[0004] The arthroscopic access sleeve device provided in the present application is intended to solve the problems of low operating efficiency and easy falling off of existing sleeves.

[0005] In order to solve the above technical problems, a technical solution adopted in the present application is to provide an arthroscopic access sleeve device, comprising:

[0006] The outer sleeve comprises a first tube body; the first tube body has a first port and a second port opposite to each other; the outer side surface of the first port has a first annular flange;

[0007] An annular buckle, detachably sleeved on the outer side of the first tube;

[0008] Wherein, a first magnetic component is arranged on the annular buckle, and a second magnetic component is arranged on the first annular flange.

[0009] In a specific embodiment, an even number of the first magnetic parts are provided on the annular buckle, and the magnetic poles of two adjacent first magnetic parts are facing opposite directions; an even number of the second magnetic parts are provided on the first annular flange, and the magnetic poles of two adjacent second magnetic parts are facing opposite directions; the number of the first magnetic parts and the second magnetic parts are the same, forming an even number of pairs of magnetic parts in a one-to-one correspondence; wherein the annular buckle is in a first state relative to the first annular flange, and the first magnetic part and the second magnetic part of each pair of magnetic parts attract each other; the annular buckle is in a second state relative to the first annular flange, and the first magnetic part and the second magnetic part of each pair of magnetic parts repel each other.

[0010] In a specific embodiment, the number of the first magnetic parts and the second magnetic parts are 4, 6 or 8; an even number of the first magnetic parts are equally spaced along the circumference of the annular buckle; an even number of the second magnetic parts are equally spaced along the circumference of the first annular flange.

[0011] In a specific embodiment, the inner diameter of the annular buckle is larger than the outer diameter of the first tube body and smaller than the outer diameter of the first annular flange.

[0012] In a specific embodiment, the first magnetic member is disposed close to an edge of the annular buckle, and the second magnetic member is disposed close to an edge of the first annular flange.

[0013] In a specific embodiment, the second magnetic component is a memory alloy structural component; the memory alloy structural component is in a first shape in an initial state, and is in a second shape after being heated and deformed; at least in one direction, the size of the second shape is larger than the size of the first shape; the first annular flange has a accommodating cavity for accommodating the memory alloy structural component and allowing the memory alloy structural component to deform.

[0014] In a specific embodiment, the first shape is a curve or a broken line, and the second shape is a straight line.

[0015] In a specific embodiment, the arthroscopic access sleeve device further comprises:

[0016] The inner sleeve is detachably sleeved in the outer sleeve; the inner sleeve comprises a second tube body and a sealing member; the second tube body has a third port and a fourth port opposite to each other; the sealing member is arranged on the second tube body and blocks the second tube body; the sealing member has a slit for inserting an arthroscope;

[0017] Wherein, a third magnetic component is also provided on the inner sleeve for magnetic attraction with the first magnetic component.

[0018] In a specific embodiment, the outer side surface of the fourth port has a second annular flange, and the outer side surface of the second port has a third annular flange; after the inner sleeve is inserted into the outer sleeve, the third port is located in the first tube body, and the second annular flange rests on the third annular flange; wherein the third magnetic component is arranged on the second annular flange, or the third magnetic component is arranged at the third port.

[0019] In a specific embodiment, the first magnetic member is a permanent magnet; and the third magnetic member is a metal member that can be attracted by the permanent magnet.

[0020] Beneficial effects of the embodiments of the present application: Compared with the prior art, the embodiments of the present application provide an arthroscopic access sleeve device, including an outer sleeve and an annular buckle; wherein the outer sleeve includes a first tube body; the first tube body has a first port and a second port opposite to each other; the outer side of the first port has a first annular flange; the annular buckle is detachably sleeved on the outer side of the first tube body; wherein the annular buckle is provided with a first magnetic member, and the first annular flange is provided with a second magnetic member. Compared with the existing sleeve device that is fixed by manual rotation of a thread, the present application provides a first magnetic member and a second magnetic member on the annular buckle and the first annular flange respectively, so that during the arthroscopic surgery, when the first port of the arthroscopic access sleeve device is inserted into the incision, the first annular flange and the annular buckle can be timely clamped and fixed on the subcutaneous soft tissue through the magnetic attraction between the first magnetic member and the second magnetic member, which effectively improves the clamping speed, saves the operation time, and is simple to operate, reducing the risk of damage to the incision and subcutaneous soft tissue. In addition, since the first annular flange located on the subcutaneous soft tissue is fixed to the annular buckle by magnetic attraction, the risk of the outer sleeve falling off due to deformation of the first annular flange under the action of external force is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of an existing arthroscopic access sleeve device;

[0022] Figure 2 It is a schematic diagram of the structure of the existing arthroscopic access sleeve device being deformed and falling off under the action of external force;

[0023] Figure 3 A schematic structural diagram of an arthroscopic access sleeve device provided in the first embodiment of the present application;

[0024] Figure 4a for Figure 3 The structure schematic diagram of the arthroscopic access sleeve device in a first state;

[0025] Figure 4b for Figure 3The structural schematic diagram of the arthroscopic access sleeve device shown is in a second state;

[0026] Figure 5a A bottom view of the annular buckle in the arthroscopic access sleeve device provided in the second embodiment of the present application;

[0027] Figure 5b A bottom view of the outer sleeve in the arthroscopic access sleeve device provided in the second embodiment of the present application;

[0028] Figure 6 A schematic structural diagram of an arthroscopic access sleeve device provided in a third embodiment of the present application;

[0029] Figure 7 A schematic structural diagram of an arthroscopic access sleeve device provided in a fourth embodiment of the present application;

[0030] Figure 8 for Figure 7 The schematic diagram of the process of inserting the arthroscopic access cannula device into the subcutaneous soft tissue is shown;

[0031] Fig. 9 A schematic diagram of the structure of the second magnetic member in the arthroscopic access sleeve device provided in the fifth embodiment of the present application before and after deformation;

[0032] Fig.10a for Fig. 9 The cross-sectional view of the arthroscopic access cannula device along line AA is shown;

[0033] Fig.10b for Fig. 9 The cross-sectional view of the arthroscopic access cannula device along line BB is shown;

[0034] Fig.11 A schematic structural diagram of an arthroscopic access cannula device provided in a sixth embodiment of the present application;

[0035] Fig.12 This is a schematic structural diagram of the arthroscopic access sleeve device provided in the seventh embodiment of the present application.

[0036] Description of Figure Numbers:

[0037] 1-outer sleeve; 2-annular buckle; 3-first magnetic part; 4-second magnetic part; 5-inner sleeve; 6-third magnetic part; 11-first tube body; 12-first annular flange; 13-third annular flange; 21-opening; 40-memory alloy structural part; 51-second tube body; 52-sealing part; 53-second annular flange; 111-first port; 112-second port; 121-accommodating chamber; 511-third port; 512-fourth port. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0039] The terms "first", "second" and "third" in this application are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined as "first", "second" and "third" can explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. All directional indications (such as up, down, left, right, front, back...) in the embodiments of this application are only used to explain the relative position relationship, movement, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication also changes accordingly. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units that are not listed, or optionally also includes other steps or units inherent to these processes, methods, products or devices.

[0040] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0041] like Figure 1 As shown, Figure 1 The diagram is a schematic diagram of the structure of the existing arthroscopic access cannula device; currently, shoulder arthroscopy surgery mostly uses threaded cannula to avoid damage to soft tissue when switching arthroscopic instruments. Currently, shoulder arthroscopy surgery cannula mostly uses silicone hoses, which need to be screwed into the soft tissue using the threads on the cannula wall. This operation is inefficient and may also cause certain damage to the incision and subcutaneous soft tissue. In addition, if Figure 2 As shown, Figure 2 The present invention is a schematic diagram of the structure of an existing arthroscopic access sleeve device that is deformed and falls off under the action of external force. Since the sleeve is made of a silicone hose, the portion placed under the soft tissue is easily deformed under the action of external force, causing the sleeve to fall off.

[0042] Based on this, an embodiment of the present application provides an arthroscopic access sleeve device, which can effectively improve the clamping speed, save surgical time, and is easy to operate, reducing the risk of damage to the incision and subcutaneous soft tissue, while also reducing the risk of the outer sleeve falling off.

[0043] The present application is described in detail below with reference to the accompanying drawings and embodiments.

[0044] See also Figure 3 , Figure 3 The present invention provides an arthroscopic access sleeve device according to the first embodiment of the present invention. The present invention provides an arthroscopic access sleeve device, which can be used in shoulder arthroscopic surgery to provide a surgical channel for accessing arthroscopic instruments and delivering grafts. Specifically, the arthroscopic access sleeve device can include an outer sleeve 1 and an annular buckle 2.

[0045] The outer sleeve 1 is a hollow columnar structure, which is used to insert and stretch the subcutaneous soft tissue from the incision to keep the surgical channel unobstructed. Specifically, the outer sleeve 1 may include a first tube body 11; the first tube body 11 has a first port 111 and a second port 112 relative to each other; when the outer sleeve 1 is inserted into the incision, the first port 111 is located in the subcutaneous soft tissue, and the second port 112 is located outside the subcutaneous soft tissue, and arthroscopic instruments and transplants enter the subcutaneous soft tissue through the second port 112 and the first port 111. The outer side of the first port 111 has a first annular flange 12; along the first direction X perpendicular to the axis of the first tube body 11, the first annular flange 12 extends from the outer surface of the side wall of the first tube body 11 in a direction away from the axis. When the outer sleeve 1 is inserted into the incision, the first annular flange 12 overlaps the lower surface of the subcutaneous soft tissue to reduce the risk of the outer sleeve 1 falling off.

[0046] The annular buckle 2 is detachably mounted on the outer side of the first tube 11, and is used to cooperate with the first annular flange 12 to fix the outer sleeve 1 on the subcutaneous soft tissue. The annular buckle 2 is provided with a first magnetic component 3, and the first annular flange 12 is correspondingly provided with a second magnetic component 4; the magnetic attraction between the first magnetic component 3 and the second magnetic component 4 can clamp the annular buckle 2 and the first annular flange 12 on the subcutaneous soft tissue, so as to fix the outer sleeve 1 on the subcutaneous soft tissue.

[0047] At least one of the first magnetic member 3 and the second magnetic member 4 is a magnet, such as a permanent magnet. The first magnetic member 3 can be embedded in or inside the surface groove of the annular buckle 2; the second magnetic member 4 can be embedded in or inside the surface groove of the first annular flange 12. The number and shape of the first magnetic member 3 and the second magnetic member 4 are not limited. In a specific embodiment, the first magnetic member 3 and the second magnetic member 4 can both be annular permanent magnets.

[0048] The present application arranges the first magnetic part 3 and the second magnetic part 4 on the annular buckle 2 and the first annular flange 12 respectively, so that during arthroscopic surgery, when the first port 111 of the arthroscopic access sleeve device is inserted into the incision, the first annular flange 12 and the annular buckle 2 can be clamped and fixed on the subcutaneous soft tissue in time through the magnetic attraction between the first magnetic part 3 and the second magnetic part 4, which effectively improves the clamping speed, saves surgical time, and is simple to operate, reducing the risk of damage to the incision and subcutaneous soft tissue. In addition, since the first annular flange 12 located at the subcutaneous soft tissue is fixed by magnetic attraction to the annular buckle 2, the risk of the outer sleeve 1 falling off due to deformation of the first annular flange 12 under the action of external force is reduced.

[0049] See also Figure 4a and Figure 4b , Figure 4a for Figure 3 The structural schematic diagram of the arthroscopic access sleeve device shown is in a first state; Figure 4b for Figure 3 The structure diagram of the arthroscopic access sleeve device shown in the second state. In a specific embodiment, the first magnetic member 3 and the second magnetic member 4 can both be permanent magnets. An even number of first magnetic members 3 are provided on the annular buckle 2, and the magnetic poles of two adjacent first magnetic members 3 are in opposite directions; for example, the N pole of one first magnetic member 3 faces the first annular flange 12, while the S pole of another adjacent first magnetic member 3 faces the first annular flange 12. Correspondingly, an even number of second magnetic members 4 are provided on the first annular flange 12, and the magnetic poles of two adjacent second magnetic members 4 are in opposite directions; for example, the S pole of one second magnetic member 4 faces the annular buckle 2, while the N pole of another adjacent second magnetic member 4 faces the annular buckle 2. And the number of the first magnetic member 3 and the second magnetic member 4 is the same, forming an even number of pairs of magnetic members in one-to-one correspondence; each pair of magnetic members can attract each other to better fix the outer sleeve 1 on the subcutaneous soft tissue.

[0050] Among them, Figure 4a As shown, when the annular buckle 2 is in the first state relative to the first annular flange 12, the first magnetic member 3 and the second magnetic member 4 of each pair of magnetic members attract each other, so that the annular buckle 2 and the first annular flange 12 maintain a state of clamping the subcutaneous soft tissue, which is convenient for the entry and exit of arthroscopic instruments and the delivery of grafts during surgery. Specifically, when the annular buckle 2 is in the first state relative to the first annular flange 12, the magnetic poles of the corresponding first magnetic member 3 and the second magnetic member 4 are oriented in the same direction; that is, the S pole of the first magnetic member 3 is oriented toward the first annular flange 12, and the N pole of the corresponding second magnetic member 4 is oriented toward the annular buckle 2, or the N pole of the first magnetic member 3 is oriented toward the first annular flange 12, and the S pole of the corresponding second magnetic member 4 is oriented toward the annular buckle 2; so that the corresponding first magnetic member 3 and the second magnetic member 4 attract each other.

[0051] like Figure 4b As shown, the annular buckle 2 can be rotated so that the annular buckle 2 is in the second state relative to the first annular flange 12; at this time, the first magnetic part 3 and the second magnetic part 4 of each pair of magnetic parts repel each other, so that the distance between the annular buckle 2 and the first annular flange 12 is increased, thereby exiting the state of clamping the subcutaneous soft tissue, so as to facilitate the removal of the outer sleeve 1.

[0052] Specifically, the relative positions of the first magnetic component 3 and the second magnetic component 4 change after the annular buckle 2 is rotated, forming a new corresponding relationship. When the annular buckle 2 is in the second state relative to the first annular flange 12, the magnetic poles of the corresponding first magnetic component 3 and the second magnetic component 4 are oriented in different directions; that is, the N pole of the first magnetic component 3 is oriented toward the first annular flange 12, and the N pole of the corresponding second magnetic component 4 is oriented toward the annular buckle 2, or the S pole of the first magnetic component 3 is oriented toward the first annular flange 12, and the S pole of the corresponding second magnetic component 4 is oriented toward the annular buckle 2; so that the corresponding first magnetic component 3 and the second magnetic component 4 repel each other.

[0053] Specifically, the number of the first magnetic parts 3 and the second magnetic parts 4 are both two; the two first magnetic parts 3 are arranged on the same diameter of the annular buckle 2, and the two second magnetic parts 4 are arranged on the same diameter of the first annular flange 12. The annular buckle 2 is rotated 180° to achieve switching between the first state and the second state, that is, the first magnetic part 3 in the annular buckle 2 and the second magnetic part 4 in the first annular flange 12 are switched between mutual attraction and mutual repulsion, thereby further simplifying the operation of the arthroscopic access sleeve device.

[0054] See also Figure 5a and Figure 5b , Figure 5a A bottom view of the annular buckle in the arthroscopic access sleeve device provided in the second embodiment of the present application; Figure 5b A bottom view of the outer sleeve in the arthroscopic access sleeve device provided in the second embodiment of the present application. The structure of the arthroscopic access sleeve device provided in the second embodiment of the present application is basically the same as the structure of the arthroscopic access sleeve device provided in the first embodiment of the present application, except that, in the second embodiment of the present application, the number of the first magnetic member 3 and the second magnetic member 4 is greater than 2, for example, it can be 4, 6 or 8, so as to further improve the clamping stability of the annular buckle 2 and the first annular flange 12 on the subcutaneous soft tissue. Among them, an even number of first magnetic members 3 are arranged at equal intervals along the circumference of the annular buckle 2; an even number of second magnetic members 4 are arranged at equal intervals along the circumference of the first annular flange 12. The second embodiment of the present application is explained by taking the number of the first magnetic member 3 and the second magnetic member 4 as 4 as an example.

[0055] Specifically, Figure 5aAs shown, the annular buckle 2 also has an opening 21; the width of the opening 21 is smaller than the inner diameter of the annular buckle 2. It can be understood that the material of the annular buckle 2 can be silicone, which has a certain elasticity, and the annular buckle 2 can be detachably mounted on the outer side of the first tube body 11 through the opening 21, or can be removed from the first tube body 11. Specifically, the four first magnetic parts 3 are arranged at equal intervals along the circumference of the annular buckle 2, and the opening 21 can be arranged between any two first magnetic parts 3, so as not to affect the equal interval arrangement of the first magnetic parts 3; wherein, the magnetic orientations of two adjacent first magnetic parts 3 are opposite.

[0056] Correspondingly, such as Figure 5b As shown, four second magnetic members 4 are arranged at equal intervals along the circumference of the first annular flange 12, and the magnetic orientations of two adjacent second magnetic members 4 are opposite. In this way, the first state and the second state can be switched by rotating the annular buckle 2 by 90°, that is, the first magnetic member 3 in the annular buckle 2 and the second magnetic member 4 in the first annular flange 12 can be switched between mutual attraction and mutual repulsion, thereby further simplifying the operation of the arthroscopic access sleeve device.

[0057] It can be understood that when the number of the first magnetic members 3 and the second magnetic members 4 are both 6 or 8, the rotation angle of the annular buckle 2 can be further reduced, thereby simplifying the operation. However, the number of the first magnetic members 3 and the second magnetic members 4 should not be too large to avoid excessive mutual interference between the magnetic attraction and repulsion forces due to the small distance between two adjacent pairs of the first magnetic members 3 and the second magnetic members 4.

[0058] like Figure 6 As shown, Figure 6 A schematic diagram of the structure of the arthroscopic access cannula device provided in the third embodiment of the present application; the structure of the arthroscopic access cannula device provided in the third embodiment of the present application is basically the same as the structure of the arthroscopic access cannula device provided in the first embodiment of the present application, except that, in the third embodiment of the present application, the inner diameter a of the annular buckle 2 can be greater than the outer diameter b of the first tube body 11. By increasing the inner diameter a of the annular buckle 2, the annular buckle 2 can slide axially along the first tube body 11 and the annular buckle 2 can rotate circumferentially along the first tube body 11. The friction force of the annular buckle 2 when sliding axially or rotating circumferentially along the first tube body 11 is reduced, and the annular buckle 2 is prevented from driving the outer sleeve 1 during operation, thereby further reducing the risk of damage to the incision and subcutaneous soft tissue. And the inner diameter a of the annular buckle 2 is smaller than the outer diameter c of the first annular flange 12, so as to reduce the risk of the annular buckle 2 falling off from the first annular flange 12.

[0059] See also Figure 7 and Figure 8 , Figure 7 A schematic structural diagram of an arthroscopic access sleeve device provided in a fourth embodiment of the present application; Figure 8for Figure 7 The structure of the arthroscopic access cannula device provided in the fourth embodiment of the present application is substantially the same as that of the arthroscopic access cannula device provided in the first embodiment of the present application, except that, in the fourth embodiment of the present application, the first magnetic member 3 is disposed near the edge of the annular buckle 2, and the second magnetic member 4 is disposed near the edge of the first annular flange 12.

[0060] In this way, by increasing the distance between the first magnetic component 3 and the first tube body 11, as well as the distance between the second magnetic component 4 and the first tube body 11, the magnetic attraction force between the first magnetic component 3 and the second magnetic component 4 is increased, which increases the torque for the axial rotation of the first annular flange 12 relative to the first port 111 of the first tube body 11 in the first tube body 11, further improving the clamping stability of the annular buckle 2 and the first annular flange 12 on the subcutaneous soft tissue, and further reducing the risk of the outer sleeve 1 falling off due to deformation of the first annular flange 12.

[0061] In addition, if Figure 8 As shown, in the process of inserting the arthroscopic access sleeve device into the subcutaneous soft tissue, the portion of the first annular flange 12 close to the first tube body 11 needs to be deformed to a certain extent so that the first port 111 of the outer sleeve 1 can be smoothly inserted into the incision. By arranging the first magnetic member 3 and the second magnetic member 4 at the edge away from the first tube body 11, it is also possible to avoid the situation where the second magnetic member 4 is too close to the first tube body 11 and interferes with the deformation of the first annular flange 12, which is conducive to the smooth insertion of the first port 111 of the outer sleeve 1 into the incision.

[0062] See also Fig. 9 , Fig. 9 A schematic diagram of the structure of the second magnetic member in the arthroscopic access sleeve device provided in the fifth embodiment of the present application before and after deformation; the structure of the arthroscopic access sleeve device provided in the fifth embodiment of the present application is basically the same as the structure of the arthroscopic access sleeve device provided in the first embodiment of the present application, except that, in the fifth embodiment of the present application, the second magnetic member 4 can be a memory alloy structural member 40; the memory alloy structural member 40 can be directly prepared by using a memory alloy, or it can be prepared by depositing a magnetic material on the surface of the memory alloy. Specifically, the memory alloy structural member 40 is in a first shape in the initial state and in a second shape after being heated and deformed; at least in one direction, the size of the second shape is greater than the size of the first shape. Specifically, along the first direction X perpendicular to the axis of the first tube 11, the width d2 of the memory alloy structural member 40 when it is in the second shape is greater than the width d1 of the memory alloy structural member 40 when it is in the first shape.

[0063] Those skilled in the art will appreciate that, during the process of inserting the arthroscopic access cannula device into the subcutaneous soft tissue, the memory alloy structural member 40 is in the first shape with a smaller size (eg, Fig. 9 In the above figure), during the operation after the arthroscopic access sleeve device is inserted into the subcutaneous soft tissue, physiological saline is usually added to the incision to ensure the smooth progress of the operation. As long as the temperature of the physiological saline reaches 40°C, the memory alloy structure 40 can be heated to deform it, so that the memory alloy structure 40 is in a larger second shape (such as Fig. 9 The overall structural strength of the first annular flange 12 is enhanced, and the risk of the outer sleeve 1 falling off due to deformation of the first annular flange 12 under the action of external force is further reduced.

[0064] For details, see Fig.10a and Fig.10b , Fig.10a for Fig. 9 The cross-sectional view of the arthroscopic access cannula device along line AA is shown; Fig.10b for Fig. 9 The first annular flange 12 also has a receiving cavity 121 for receiving the memory alloy structure 40 and allowing the memory alloy structure 40 to deform. Specifically, the receiving cavity 121 can be annular and formed by the first annular flange 12 and the side wall of the first tube 11.

[0065] Combination Fig. 9 and Fig.10a The first shape may be a curve shape, specifically a circular ring shape; when the memory alloy structural member 40 is in the first shape, the side wall of the memory alloy structural member 40 may be in contact with the inner wall of the accommodating cavity 121. Fig. 9 and Fig.10b The second shape can be a straight line, specifically a square ring; when the memory alloy structural member 40 is in the second shape, the four edges of the memory alloy structural member 40 are against the side walls of the accommodating cavity 121, and the four side walls are spaced apart from the side walls of the accommodating cavity 121 to better support the first annular flange 12 and further reduce the risk of deformation of the first annular flange 12.

[0066] Of course, in some other embodiments, the first shape may also be a broken line shape, such as a polygonal ring shape.

[0067] See also Fig.11 , Fig.11This is a schematic structural diagram of an arthroscopic access cannula device provided in the sixth embodiment of the present application; the structure of the arthroscopic access cannula device provided in the sixth embodiment of the present application is basically the same as the structure of the arthroscopic access cannula device provided in the first embodiment of the present application, with the difference that, in the sixth embodiment of the present application, the arthroscopic access cannula device also includes an inner cannula 5 detachably sleeved in the outer cannula 1, which is used to seal the first tube body 11 to prevent liquid leakage.

[0068] Specifically, the inner sleeve 5 may include a second tube body 51 and a sealing member 52 .

[0069] The second tube body 51 is a hollow columnar structure, and the axis of the second tube body 51 can be arranged to coincide with the axis of the first tube body 11, and the side wall of the second tube body 51 can be interference fit with the side wall of the first tube body 11 to prevent leakage. Specifically, the second tube body 51 has a third port 511 and a fourth port 512 relative to each other; wherein the third port 511 is arranged close to the first port 111; arthroscopic instruments and implants enter the first tube body 11 through the fourth port 512 and the third port 511 of the second tube body 51, and then enter the subcutaneous soft tissue through the first port 111 of the first tube body 11.

[0070] The seal 52 is disposed on the second tube 51 and blocks the second tube 51 to prevent leakage; specifically, the seal 52 is disposed at the fourth port 512 of the second tube 51. The seal 52 has a slit for inserting an arthroscope, so that the arthroscopic instrument enters the slit through the seal 52 and the second tube 51. The seal 52 may also be disposed at other locations of the second tube 51, or multiple seals 52 may be disposed in the second tube 51.

[0071] Among them, a third magnetic component 6 is also provided on the inner sleeve 5, which is used for magnetic attraction with the first magnetic component 3, so as to fix the inner sleeve 5 on the outer sleeve 1, so as to reduce the risk of the inner sleeve 5 falling off under the action of external force when the arthroscopic instrument is inserted and removed during the operation.

[0072] Specifically, Fig.11 As shown, the outer side surface of the fourth port 512 has a second annular flange 53; along the first direction X, the second annular flange 53 extends from the outer surface of the side wall of the second tube body 51 in a direction away from the axis of the second tube body 51. Among them, the third magnetic member 6 can be arranged on the second annular flange 53, for example, embedded in or inside the groove of the second annular flange 53. The outer side surface of the second port 112 has a third annular flange 13; along the first direction X, the third annular flange 13 extends from the outer surface of the side wall of the first tube body 11 in a direction away from the axis of the first tube body 11. After the inner sleeve 5 is installed in the outer sleeve 1, the third port 511 is located in the first tube body 11, and the second annular flange 53 is placed on the third annular flange 13, and the third annular flange 13 is used to support the second annular flange 53.

[0073] The first magnetic part 3 may be a permanent magnet; the third magnetic part 6 may be a metal part that can be attracted by a permanent magnet; it can be understood that the third magnetic part is set as a metal part instead of a permanent magnet in order to avoid the situation where the magnetic poles of the first magnetic part 3 and the third magnetic part 6 face opposite directions and cause mutual repulsion after the annular buckle 2 is rotated. Specifically, the material of the third magnetic part 6 may be at least one of iron, cobalt, nickel and alloys thereof.

[0074] like Fig.12 As shown, Fig.12 A schematic structural diagram of the arthroscopic access sleeve device provided in the seventh embodiment of the present application; the structure of the arthroscopic access sleeve device provided in the seventh embodiment of the present application is basically the same as the structure of the arthroscopic access sleeve device provided in the sixth embodiment of the present application, with the difference that, in the seventh embodiment of the present application, the third magnetic member 6 can also be arranged at the third port 511, so that after the inner sleeve 5 is installed into the outer sleeve 1, the distance between the third magnetic member 6 and the first magnetic member 3 in the annular buckle 2 is smaller, and the magnetic attraction between the two is stronger, thereby further reducing the risk of the inner sleeve 5 falling off.

[0075] The embodiment of the present application provides an arthroscopic access sleeve device, comprising an outer sleeve 1 and an annular buckle 2. The outer sleeve 1 comprises a first tube body 11; the first tube body 11 has a first port 111 and a second port 112 opposite to each other; the outer side surface of the first port 111 has a first annular flange 12; the annular buckle 2 is detachably sleeved on the outer side surface of the first tube body 11; the annular buckle 2 is provided with a first magnetic part 3, and the first annular flange 12 is provided with a second magnetic part 4. Compared with the existing method of manually rotating and fixing the sleeve device through a thread, the present application sets the first magnetic part 3 and the second magnetic part 4 on the annular buckle 2 and the first annular flange 12 respectively, so that during the arthroscopic surgery, when the first port 111 of the arthroscopic access sleeve device is inserted into the incision, the first annular flange 12 and the annular buckle 2 can be clamped and fixed on the subcutaneous soft tissue in time through the magnetic attraction between the first magnetic part 3 and the second magnetic part 4, which effectively improves the clamping speed, saves surgical time, and is simple to operate, reducing the risk of damage to the incision and subcutaneous soft tissue. In addition, since the first annular flange 12 located in the subcutaneous soft tissue is fixed by magnetic attraction between the annular buckle 2, the risk of the outer sleeve 1 falling off due to deformation of the first annular flange 12 under the action of external force is reduced.

[0076] The above description is only an implementation method of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. An arthroscopic access cannula device, characterized in that: include: The outer tube includes the first tube body; The first tube body has a first port and a second port opposite to each other; the outer side of the first port has a first annular flange; An annular buckle, detachably sleeved on the outer side of the first tube; The inner sleeve is detachably sleeved in the outer sleeve; the inner sleeve comprises a second tube body and a sealing member; the second tube body has a third port and a fourth port opposite to each other; the sealing member is arranged on the second tube body and blocks the second tube body; the sealing member has a slit for inserting an arthroscope; An even number of first magnetic members are arranged on the annular buckle, and the magnetic poles of two adjacent first magnetic members face opposite directions; an even number of second magnetic members are arranged on the first annular flange, and the magnetic poles of two adjacent second magnetic members face opposite directions; the number of the first magnetic members and the second magnetic members are the same, and an even number of pairs of magnetic members are formed in a one-to-one correspondence; wherein the annular buckle is in a first state relative to the first annular flange, and the first magnetic member and the second magnetic member of each pair of magnetic members attract each other; the annular buckle is in a second state relative to the first annular flange, and the first magnetic member and the second magnetic member of each pair of magnetic members repel each other; and the first magnetic member is arranged close to the edge of the annular buckle, and the second magnetic member is arranged close to the edge of the first annular flange; A third magnetic part is also provided on the inner sleeve for magnetic attraction with the first magnetic part; the outer side surface of the fourth port has a second annular flange, and the outer side surface of the second port has a third annular flange; after the inner sleeve is installed in the outer sleeve, the third port is located in the first tube body, and the second annular flange rests on the third annular flange; wherein the third magnetic part is arranged at the third port; the first magnetic part is a permanent magnet; and the third magnetic part is a metal part that can be attracted by the permanent magnet.

2. The arthroscopic access cannula device according to claim 1, characterized in that: The number of the first magnetic parts and the number of the second magnetic parts are both 4, 6 or 8; an even number of the first magnetic parts are arranged at equal intervals along the circumference of the annular buckle; an even number of the second magnetic parts are arranged at equal intervals along the circumference of the first annular flange.

3. The arthroscopic access cannula device according to claim 1, characterized in that: The inner diameter of the annular buckle is larger than the outer diameter of the first tube body, and smaller than the outer diameter of the first annular flange.

4. The arthroscopic access cannula device according to claim 1, characterized in that: The second magnetic component is a memory alloy structural component, which is made by depositing magnetic material on the surface of the memory alloy; the memory alloy structural component is in a first shape in an initial state, and is in a second shape after being heated and deformed; At least in one direction, the size of the second shape is larger than the size of the first shape; the first annular flange has an accommodating cavity for accommodating the memory alloy structural component and allowing the memory alloy structural component to deform.

5. The arthroscopic access cannula device according to claim 4, characterized in that: The first shape is a circular ring; when the memory alloy structural component is in the first shape, the side wall of the memory alloy structural component is in contact with the inner wall of the accommodating cavity; the second shape is a square ring; when the memory alloy structural component is in the second shape, the four edges of the memory alloy structural component are in contact with the side wall of the accommodating cavity, and the four side walls are spaced apart from the side wall of the accommodating cavity.

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