CN117838255A - Arthroscope access sleeve device - Google Patents

Abstract

The present application provides an arthroscopic access cannula device. The arthroscopic access cannula device comprises an outer cannula and an inner cannula, wherein the outer cannula comprises a first tube body, and the first tube body is provided with a first port and a second port which are opposite; the inner sleeve includes a second tube having opposed third and fourth ports and a seal. The sealing piece is arranged on the second pipe body and is used for sealing the second pipe body, and a cutting joint is arranged on the sealing piece and is used for inserting the arthroscope. The inner sleeve is detachably sleeved in the second port and is arranged at intervals with the first port and used for blocking the first pipe body. Therefore, in the arthroscopic surgery process, the first port is plugged into the incision, the device can be used as a daily arthroscopic operation protection channel, arthroscopic instruments enter the incision through the second tube body and the incision of the sealing element to operate, and meanwhile, the sealing element can ensure that liquid leakage is prevented. When the second tube is removed from the second port, the device may be used to deliver bulk implant procedures, such as patches and bone fragments, into the incision.

Description

Arthroscope access sleeve device

Technical Field

The invention relates to the field of surgical instruments, in particular to an arthroscopic access cannula device.

Background

In arthroscopic surgery, instruments such as a lens, a planing tool, a grinding drill and the like need to enter and exit a surgical channel for a plurality of times to finish the probing, cleaning and repairing operation in the joint cavity. In particular to a shoulder arthroscopy operation, various arthroscopic instruments need to be frequently switched in and out of different channels due to the complex internal structure. Meanwhile, the shoulder soft tissue has thick muscles, the instrument needs to pass through multiple layers of soft tissues from the body surface through the channel to enter the joint cavity, and the instrument can be wrongly entered into other soft tissues when the direction of the instrument is slightly changed, so that the instrument can not smoothly enter the joint cavity, and the entering direction needs to be readjusted, so that unnecessary soft tissue damage is caused.

At present, a threaded sleeve is mostly adopted in the shoulder arthroscopy operation so as to avoid damage to soft tissues caused by switching arthroscopy instruments. However, most of the threaded sleeves are made of hard plastic materials, and the threaded sleeves are screwed into soft tissues by using threads on the walls of the threaded sleeves when in use, so that the operation can cause certain damage to incisions and subcutaneous soft tissues. In order to solve the problem, the current shoulder arthroscopic surgery sleeve mostly adopts a silica gel hose. However, the requirements of the shoulder arthroscopic surgery cannot be satisfied at all.

Disclosure of Invention

The technical problem that this application mainly solves is in arthroscopic surgery, and arthroscopic instrument needs the business turn over operation passageway many times in order to accomplish the intrA-Articular investigation clearance and repair operation's problem to and present arthroscopic cannula diameter is less, the unable problem of passing through of graft.

In order to solve the technical problems, one technical scheme adopted by the application is as follows: there is provided an arthroscopic access cannula device comprising: an outer sleeve comprising a first tube body; the first pipe body is provided with a first port and a second port which are opposite; an inner sleeve comprising a second body and a seal; the second pipe body is provided with a third port and a fourth port which are opposite; the sealing piece is arranged on the second pipe body and seals the second pipe body; the sealing piece is provided with a cutting seam for inserting an arthroscope; the inner sleeve is detachably sleeved in the second port and is arranged at intervals with the first port and used for blocking the first pipe body.

In an embodiment, the seal comprises a first seal disposed on the fourth port; and/or the seal comprises a second seal disposed on the third port.

In an embodiment, the third port is located in the first pipe body and is spaced from the first port; the fourth port extends out of the second port, and an outer side surface of the fourth port is provided with a first annular flange;

the outer side of the second port has a second annular flange; the first annular flange is disposed on a surface of the second annular flange remote from the first port.

In one embodiment, the outer sleeve further comprises a first locking mechanism; the inner sleeve further comprises a second locking mechanism; the first locking mechanism is matched with the second locking mechanism and used for locking and connecting the outer sleeve and the inner sleeve.

In one embodiment, the first locking mechanism comprises a protrusion disposed on the second annular flange, and the second locking mechanism comprises a locking strap; one end of the locking belt is connected with the first annular flange, and the other end of the locking belt is provided with a retaining ring matched with the protrusion; or (b)

The first locking mechanism comprises a first magnetic attraction piece embedded on the second annular flange, and the second locking mechanism comprises a second magnetic attraction piece embedded on the first annular flange.

In one embodiment, the arthroscopic access cannula device further comprises a flexible connection handle; one end of the flexible connecting handle is connected with the first annular flange, and the other end of the flexible connecting handle is connected with the outer side surface of the second port or the second annular flange.

In an embodiment, the materials of the outer sleeve and the inner sleeve are both silica gel; the outer diameter of the second pipe body is smaller than the inner diameter of the first pipe body; the outer surface of the second pipe body is provided with a plurality of annular sealing ribs, and the annular sealing ribs are attached to the inner surface of the first pipe body.

In one embodiment, the length of the inner sleeve is one third to two thirds of the length of the outer sleeve.

In one embodiment, the arthroscopic access cannula device further comprises an annular clasp having a first connection mechanism on an inner surface thereof;

the outer side of the first port has a third annular flange; the outer surface of the pipe section of the first pipe body, which is close to the second port, is provided with a second connecting mechanism; the annular buckle is sleeved on the outer side of the first pipe body and limited at different positions of the first pipe body along the axial direction by the second connecting mechanism.

In an embodiment, the annular buckle has a notch, the first connection mechanism is a clamping groove on the inner surface of the annular buckle, and the second connection mechanism is a clamping block protruding from the outer surface of the first pipe body.

The beneficial effects of this application: in contrast to the prior art, the present application provides an arthroscopic access cannula device comprising an outer cannula and an inner cannula, the outer cannula comprising a first tube body having opposing first and second ports; the inner sleeve includes a second tube having opposed third and fourth ports and a seal. The sealing piece is arranged on the second pipe body and is used for sealing the second pipe body, and a cutting joint is arranged on the sealing piece and is used for inserting the arthroscope. The inner sleeve is detachably sleeved in the second port and is arranged at intervals with the first port and used for blocking the first pipe body. Thus, in the arthroscopic surgery process, the first port of the arthroscopic access cannula device is plugged into the incision, the device can be used as a daily arthroscopic operation protection channel, an arthroscopic instrument enters the incision through the incision of the second tube body and the sealing piece to operate, and meanwhile, the sealing piece can ensure that liquid leakage is prevented. When the second body is removed from the second port, i.e. the inner cannula is separated from the outer cannula, the device may be operated by the outer cannula to transport the bulk graft into the incision, e.g. the patch and bone pieces may be introduced through the first body of the outer cannula, and then the inner cannula is inserted into the outer cannula to rapidly seal the outer cannula by means of the seal of the inner cannula.

Drawings

FIG. 1 is a schematic view of an arthroscopic access cannula device according to the first embodiment of the present application;

FIG. 2 is a schematic cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 is a schematic view of a seal provided in an embodiment of the present application;

FIG. 4 is a schematic cross-sectional view of an arthroscopic access cannula device along the line A-A provided in a second embodiment of the present application;

FIG. 5 is a schematic cross-sectional view of an arthroscopic access cannula device along the line A-A provided in a third embodiment of the present application;

FIG. 6 is a schematic cross-sectional view of an arthroscopic access cannula device along the line A-A provided in a fourth embodiment of the present application;

FIG. 7 is a schematic cross-sectional view of an arthroscopic access cannula device along the line A-A provided in a fifth embodiment of the present application;

FIG. 8 is a schematic view of a sleeve-over process of an arthroscopic access sleeve device according to one embodiment of the present invention;

fig. 9 is a schematic view of an annular buckle according to an embodiment of the present application.

Reference numerals illustrate:

1-arthroscopic access cannula device; 2-an outer sleeve; 21-a first locking mechanism; 211-protrusions; 212-a first magnetic attraction piece; 3-a first tube; 31-a first port; 311-a third annular flange; 32-a second port; 321-a second annular flange; 33-a second connection mechanism; 331-clamping blocks; 4-inner sleeve; 41-a second locking mechanism; 411-locking strap; 4111-clasp; 412-a second magnetic attraction piece; 5-a second tube; 51-a third port; 52-fourth port; 521-a first annular flange; 522-annular projection; 53-annular sealing strips; 6-sealing member; 61-slitting; 63—a first seal; 64-a second seal; 7-a flexible connection handle; 8-annular buckles; 81-a first connection mechanism; 811-a clamping groove; 82-notch.

Detailed Description

The following description of the technical solutions in the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

The terms "first," "second," "third," and the like in this application are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", and "a third" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise. All directional indications (such as up, down, left, right, front, back … …) in the embodiments of the present application are merely used to explain the relative positional relationship, movement, etc. between the components in a particular gesture (as shown in the drawings), and if the particular gesture changes, the directional indication changes accordingly. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may include other steps or elements not listed or inherent to such process, method, article, or apparatus.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

The inventors have found that in shoulder arthroscopic surgery, surgical access sometimes requires the delivery of a graft through the access in addition to access to the arthroscopic instrument. If the rotator cuff is huge and torn and can not be sutured, the tendon patch is needed to fill and repair the tendon defect; in addition, when the unstable bone defect of the shoulder joint is larger, the bone defect needs to be filled by adopting bone block transplantation and fixation. The diameter of the arthroscopic cannula in clinical application is smaller, and the implant cannot pass through the arthroscopic cannula. However, if the implant is directly delivered into the joint cavity through a thick subcutaneous soft tissue by adopting a small incision, the friction between tissues is large in the delivery process, the delivery is difficult, the soft tissue is damaged greatly, and the channel is required to be closed by immediate suturing in order to avoid a great amount of perfusate exuding from the soft tissue after the delivery.

The invention provides an arthroscope access cannula device. The device is a composite sleeve device comprising an inner sleeve and an outer sleeve. The operation of the daily arthroscope instrument in and out can be satisfied, and the operation of conveying the large implant into the joint can also be satisfied. If large implants such as patches and bone blocks are needed to be sent in the operation process, the inner sleeve can be sent into the body through the inner sleeve after being pulled out. After the implant is delivered, the inner sleeve is placed into the outer sleeve again, and other instrument operations can be continued. Through the annular flange structures at the two ends of the composite sleeve, the sleeve device can be fixed in subcutaneous soft tissues, and the damage of threads of the traditional sleeve to local soft tissues is avoided. The length of the sleeve device in soft tissues is controlled by adjusting the outer annular buckle position of the sleeve device, so that the sleeve device is suitable for different channels of different people and is stabilized. The annular flange structure of the inner sleeve with enlarged thickened area is arranged to cover the annular flange structure of the outer sleeve, so that seepage prevention is consolidated. The annular flange structure of the inner sleeve is also provided with two buckles which are matched and locked with the protruding devices of the annular flange structure of the outer sleeve, so that the anti-seepage liquid is covered in a pressurizing mode, and the inner sleeve is prevented from falling out in the process of entering and exiting the instrument.

The present application is described in detail below with reference to the accompanying drawings and examples.

Referring to fig. 1, a schematic view of an arthroscopic access cannula device according to a first embodiment of the present application is shown.

An embodiment of the present application provides an arthroscopic access cannula device 1 that includes an outer cannula 2 and an inner cannula 4. The outer sleeve 2 and the inner sleeve 4 are hollow columnar structures.

Referring to fig. 2, fig. 2 is a schematic cross-sectional view along A-A in fig. 1. The outer sleeve 2 comprises a first tube body 3, the first tube body 3 having opposite first and second ports 31, 32.

Referring to fig. 2 and 3, fig. 3 is a schematic view of a seal according to an embodiment of the present application. The inner sleeve 4 comprises a second tubular body 5 and a seal 6. The second body 5 has opposed third and fourth ports 51 and 52. The sealing element 6 can be one or more, and the sealing element 6 is arranged on the second pipe body 5 and seals off the second pipe body 5. The seal 6 has a slit 61 for insertion of an arthroscopic instrument into the slit through the seal 6 and the second tube 5.

Specifically, the inner sleeve 4 is detachably sleeved in the second port 32, and the inner sleeve 4 and the first port 31 are arranged at intervals, so that the first port 31 of the outer sleeve 2 and the third port 51 of the inner sleeve 4 are arranged at one side and at intervals, and the second port 32 of the outer sleeve 2 and the fourth port 52 of the inner sleeve 4 are sleeved at the other side and mutually. The inner sleeve 4 is used for plugging the first pipe body 3.

In the above-mentioned manner, during arthroscopic surgery, the first port 31 of the arthroscopic access cannula device 1 is plugged into the incision of the patient, so that the arthroscopic instrument can be used as a daily arthroscopic operation protection channel, and enters the incision operation through the second tube 5 and the incision 61 of the sealing member 6, and meanwhile, the sealing member 6 can ensure that leakage is prevented. When the second tubular body 5 is detached from the second port 32, i.e. after the inner cannula 4 has been separated from the outer cannula 2, the device may be operated by the outer cannula 2 to transport the bulk graft into the incision, e.g. the patch and bone pieces may be introduced through the first tubular body 3 of the outer cannula 2, and then the inner cannula 4 inserted into the outer cannula 2, sealing the outer cannula 2 rapidly through the sealing member 6 of the inner cannula 4.

In an embodiment, as shown in fig. 2, the first tube body 3 and the second tube body 5 are both cylindrical, and the inner diameter of the first tube body 3 is equal to or slightly larger than the outer diameter of the second tube body 5, for example, the inner diameter of the first tube body 3 is 1-1.1 times the outer diameter of the second tube body 5, so that the inner sleeve 4 is convenient to be inserted into the outer sleeve 2 and taken out from the outer sleeve 2. It will be appreciated that if the outer diameter of the second tube 5 is too small, this will affect the tightness between the outer sleeve 2 and the inner sleeve 4, and if the first tube 3 and the second tube 5 are interference fit, this will easily result in the inner sleeve 4 and the outer sleeve 2 being difficult to separate. In one embodiment, the seal 6 includes a first seal 63, the first seal 63 being disposed on the fourth port 52. And/or the seal 6 includes a second seal 64, the second seal 64 being disposed on the third port 51. The sealing member 6 may be integrally formed with the first pipe body 3, or the sealing member 6 may be fixed to the second pipe body 5 by bonding. In this way, the seal 6 may enhance the sealing effect during arthroscopic surgery without affecting the access of arthroscopic instruments through the second tube 5 to the incision while preventing leakage.

In one embodiment, as shown in fig. 2, the third port 51 is located in the first tube 3 and spaced from the first port 31, so that the arthroscopic instrument can flexibly rotate in the tube of the outer cannula 2 to adjust the field of view. The fourth port 52 extends beyond the second port 32 and the outer side of the fourth port 52 has a first annular flange 521. The outer side of the second port 32 has a second annular flange 321, and the first annular flange 521 is disposed on a surface of the second annular flange 321 remote from the first port 31. In this way, the first annular flange 521 is supported by the second annular flange 321, so that stability and sealing performance are improved, and meanwhile, the first annular flange 521 covers the second port 32 of the first pipe body 3, so that leakage of a pipe body gap of the inner and outer sleeves 2 is avoided.

In an embodiment, as shown in fig. 2, the second port 32 of the outer sleeve 2 is chamfered, and the joint of the first annular flange 521 of the inner sleeve 4 and the outer side wall of the inner sleeve 4 is chamfered, so that the fit between the second port 32 of the outer sleeve 2 and the outer side wall of the inner sleeve 4 is enhanced, the inner sleeve 4 is more convenient to be inserted into the outer sleeve 2, the sealing effect is better, and the gap leakage between the inner sleeve 4 and the pipe body of the outer sleeve 2 is fully avoided.

In one embodiment, as shown in FIG. 4, FIG. 4 is a schematic cross-sectional view of an arthroscopic access cannula device along A-A provided in a second embodiment of the present application. The inner diameter of the first pipe body 3 is larger than the outer diameter of the second pipe body 5; the outer diameter of the first annular flange 521 is larger than the inner diameter of the first pipe body 3 and smaller than the outer diameter of the second annular flange 321; the outer wall surface of the third port 51 of the second pipe body 5 has an annular seal 53. The annular sealing strip 53 can seal the gap between the first pipe body 3 and the second pipe body 5, and can avoid the problem that the friction force caused by the whole joint of the inner wall surface of the first pipe body 3 and the outer wall surface of the second pipe body 5 is overlarge and is not easy to separate.

In one embodiment, as shown in FIG. 5, FIG. 5 is a schematic cross-sectional view of an arthroscopic access cannula device along A-A provided in a third embodiment of the present application. The outer diameter of the first annular flange 521 is larger than the outer diameter of the second annular flange 321, and the surface edge of the first annular flange 521 facing the second annular flange 321 has an annular projection 522. The inner diameter of the annular protrusion 522 is equal to the outer diameter of the second annular flange 321, and the annular protrusion 522 wraps the side surface of the second annular flange 321, improving the sealing property between the first annular flange 521 and the second annular flange 321. Preferably, as shown in fig. 6, fig. 6 is a schematic cross-sectional view of an arthroscopic access cannula device along A-A provided in a fourth embodiment of the present application. The annular projection 522 is folded to the surface edge of the second annular flange 321 facing away from the first annular flange 521, further improving the sealing property between the first annular flange 521 and the second annular flange 321.

In one embodiment, as shown in fig. 8, fig. 8 is a schematic view illustrating a sleeve sleeving process in an arthroscopic access sleeve device according to one embodiment of the present invention. The outer sleeve 2 further comprises a first locking mechanism 21 and the inner sleeve 4 further comprises a second locking mechanism 41. The first locking mechanism 21 may be one or more, and the second locking mechanism 41 may be one or more. The first locking mechanisms 21 and the second locking mechanisms 41 are the same in number and in one-to-one correspondence. The first locking mechanism 21 cooperates with the second locking mechanism 41 for locking the outer sleeve 2 and the inner sleeve 4 together. The first locking mechanism 21 is matched with the second locking mechanism 41 in the use process of the inner sleeve 4, so that the inner sleeve 4 is prevented from falling off, and the inner sleeve 4 is prevented from being pulled out when an arthroscopic instrument goes in and out of the inner sleeve 4. Meanwhile, the second annular flange 321 is tightly attached to the first annular flange 521, the sealing effect is better, and gap leakage between the inner sleeve 4 and the outer sleeve 2 is fully avoided.

In an embodiment, as shown in fig. 8, the first locking mechanism 21 includes protrusions 211 disposed on the second annular flange 321, for example, the protrusions 211 are located on the radially outer side surface of the second annular flange 321, and the number of the protrusions 211 is two and disposed on two opposite ends of the second annular flange 321 along the same diameter. The second locking mechanism 41 includes a locking band 411, one end of the locking band 411 is connected to the outer side surface of the first annular flange 521 along the radial direction, the number of the locking bands 411 is two, the locking bands are disposed at two opposite ends of the first annular flange 521 along the same diameter, and the other end has a buckle 4111 matched with the protrusion 211. The locking band 411 may be integrally formed with the second pipe body 5, or the locking band 411 may be fixed to the outer side surface of the first annular flange 521 by bonding. The locking strap 411 is made of soft medical material such as silica gel. The first locking mechanism 21 is matched with the second locking mechanism 41 in the use process of the inner sleeve 4, so that the inner sleeve 4 is prevented from falling off, and the inner sleeve 4 is prevented from being pulled out when an arthroscopic instrument goes in and out of the inner sleeve 4. Meanwhile, the second annular flange 321 is tightly attached to the first annular flange 521, the sealing effect is better, and gap leakage between the inner sleeve 4 and the outer sleeve 2 is fully avoided.

In yet another embodiment, as shown in FIG. 7, FIG. 7 is a schematic cross-sectional view of an arthroscopic access cannula device along A-A provided in a fifth embodiment of the present application. The first locking mechanism 21 includes a first magnetic attraction piece 212 embedded on the second annular flange 321, and the second locking mechanism 41 includes a second magnetic attraction piece 412 embedded on the first annular flange 521. The inner sleeve 4 is detachably sleeved in the second port 32, and the first annular flange 521 and the second annular flange 321 are in magnetic attraction and close contact through the magnetic attraction piece, so that gap leakage between the inner sleeve 4 and the outer sleeve 2 is fully avoided. Meanwhile, the magnetic attraction piece is more convenient to connect and detach, so that the operation time is saved, and the pain of a patient is reduced. Preferably, the first magnetic attraction piece 212 and the second magnetic attraction piece 412 are annular magnetic attraction pieces, the annular magnetic attraction pieces do not need to be aligned, the installation is quicker, the rotation of the inner sleeve 4 is not influenced, and the inner sleeve 4 is prevented from driving the outer sleeve 2 to rotate, so that damage is caused to a patient.

In one embodiment, as shown in fig. 8, the arthroscopic access cannula device 1 further comprises a flexible connection handle 7, one end of the flexible connection handle 7 is connected to the inner cannula 4 and the other end is connected to the outer cannula 2. For example, the flexible connection handle 7 has one end connected to the first annular flange 521 and the other end connected to the outer side of the second port 32 or the second annular flange 321. Preferably, one end of the flexible connection handle 7 is connected to the edge side of the first annular flange 521 or to the surface of the first annular flange 521 facing away from the second annular flange 321, avoiding affecting the sealing fit of the first annular flange 521 to the second annular flange 321; the other end of the flexible connection handle 7 is connected to the edge side of the second annular flange 321 or to the surface of the second annular flange 321 facing away from the first annular flange 521, reducing direct tearing of the outer sleeve 2 due to the connection of the flexible connection handle 7 to the side of the outer sleeve 2, for example reducing direct tearing of the outer sleeve 2 by the flexible connection handle 7 due to the weight of the inner sleeve 4, such that the weight of the inner sleeve 4 acts directly on the second annular flange 321 through the flexible connection handle 7. The flexible connection handle 7 is fixed by bonding. When it is desired to deliver a bulk graft through the arthroscopic access cannula device 1, the inner cannula 4 is pulled out of the outer cannula 2 by the flexible connection handle 7 for use. After the operation, the inner sleeve 4 can be plugged back into the outer sleeve 2 by finding the inner sleeve 4 through the flexible connection handle 7, and the flexible connection handle 7 is convenient and fast, and the inner sleeve 4 is not required to be lost. Preferably, the material of the flexible connection handle 7 is an elastic material, such as silicone.

In an embodiment, as shown in fig. 2, the materials of the outer sleeve 2 and the inner sleeve 4 are both silica gel, so that soft tissue injury and leakage problems can be reduced. The external diameter L1 of the second pipe body 5 is smaller than the internal diameter of the first pipe body 3, so that the inner sleeve 4 is conveniently inserted into the outer sleeve 2, and the two pipe bodies are the same in diameter and are not easy to insert. The outer surface of the second pipe body 5 is provided with a plurality of annular sealing ribs (not shown), and the annular sealing ribs are attached to the inner surface of the first pipe body 3. So, in second body 5 cover was located first body 3, a plurality of annular seal protruding muscle extrudeed and play sealed effect between the two, avoid inside and outside sleeve pipe 2 body clearance weeping.

In one embodiment, as shown in fig. 2, the length L3 of the inner sleeve 4 is one third to two thirds of the length L4 of the outer sleeve 2. In the embodiment of the application, the length L3 of the inner sleeve 4 is half of the length L4 of the outer sleeve 2, so that the arthroscopic instrument can flexibly rotate in the tube body of the outer sleeve 2 to adjust the field of view.

In an embodiment, as shown in fig. 1, 2 and 9, fig. 9 is a schematic view of an annular buckle according to an embodiment of the present application. The arthroscopic access cannula device 1 further comprises an annular clasp 8, the inner surface of the annular clasp 8 having a first connection mechanism 81. The outer side surface of the first port 31 is provided with a third annular flange 311, the outer surface of the pipe section of the first pipe body 3, which is close to the second port 32, is provided with a second connecting mechanism 33, the annular buckle 8 is sleeved on the outer side of the first pipe body 3, and the annular buckle is limited at different positions of the first pipe body 3 along the axial direction by the second connecting mechanism 33. The first connection mechanism 81 is a clamping groove 811, the second connection mechanism 33 is a clamping block 331, or the first connection mechanism 81 is a clamping block 331, and the second connection mechanism 33 is a clamping groove 811. The first and second connection means 81, 33 may also be threaded. Thus, depending on the subcutaneous soft tissue thickness, the annular clasp 8 is fixed to a suitable second connection 33. The annular buckle 8 and the third annular flange 311 of the outer sleeve 2 are respectively arranged at the upper edge of the skin incision and the lower edge of the subcutaneous soft tissue, so that the tube body of the outer sleeve 2 is fixed in the soft tissue, and the universality is realized.

In one embodiment, as shown in fig. 9, the annular buckle 8 has a notch 82, the first connection mechanism 81 is a slot 811 on the inner surface of the annular buckle 8, and the second connection mechanism 33 is a latch 331 protruding 211 on the outer surface of the first pipe body 3. The annular buckle 8 is made of a silica gel material, the annular buckle 8 can be sleeved on the outer side face of the first pipe body 3 through the notch 82, the operation is simple, and interference to the third annular flange 311 or the second annular flange 321 when the first port 31 or the second port 32 of the first pipe body 3 is sleeved on the first pipe body 3 is avoided.

The present application provides an arthroscopic access cannula device 1. The arthroscopic access cannula device 1 comprises an outer cannula 2 and an inner cannula 4, the outer cannula 2 comprising a first tube body 3, the first tube body 3 having opposite first and second ports 31, 32; the inner sleeve 4 comprises a second body 5 and a seal 6, the second body 5 having opposed third and fourth ports 51, 52. The sealing element 6 is arranged on the second pipe body 5 and seals the second pipe body 5, and a cutting seam 61 is arranged on the sealing element 6 for inserting an arthroscope. The inner sleeve 4 is detachably sleeved in the second port 32 and is arranged at intervals with the first port 31 for blocking the first pipe body 3. Thus, during arthroscopic surgery, the first port 31 of the arthroscopic access cannula device 1 is plugged into the incision, the device can be used as a daily arthroscopic operation protection channel, arthroscopic instruments enter the incision through the second tube 5 and the incision 61 of the sealing member 6, and the sealing member 6 can ensure that liquid leakage is prevented. When the second tubular body 5 is detached from the second port 32, i.e. after the inner cannula 4 has been separated from the outer cannula 2, the device may be operated by the outer cannula 2 to transport the bulk graft into the incision, e.g. the patch and bone pieces may be introduced through the first tubular body 3 of the outer cannula 2, and then the inner cannula 4 inserted into the outer cannula 2, sealing the outer cannula 2 rapidly through the sealing member 6 of the inner cannula 4.

The foregoing description is only of embodiments of the present application, and is not intended to limit the scope of the patent application, and all equivalent structures or equivalent processes using the descriptions and the contents of the present application or other related technical fields are included in the scope of the patent application.

Claims (10)

1. An arthroscopic access cannula device comprising:

an outer sleeve comprising a first tube body; the first pipe body is provided with a first port and a second port which are opposite;

an inner sleeve comprising a second body and a seal; the second pipe body is provided with a third port and a fourth port which are opposite; the sealing piece is arranged on the second pipe body and seals the second pipe body; the sealing piece is provided with a cutting seam for inserting an arthroscope;

the inner sleeve is detachably sleeved in the second port and is arranged at intervals with the first port and used for blocking the first pipe body.

2. The arthroscopic access cannula device of claim 1 wherein,

the seal includes a first seal disposed on the fourth port; and/or

The seal includes a second seal disposed on the third port.

3. The arthroscopic access cannula device of claim 1 wherein,

the third port is positioned in the first pipe body and is arranged at intervals with the first port; the fourth port extends out of the second port, and an outer side surface of the fourth port is provided with a first annular flange;

the outer side of the second port has a second annular flange; the first annular flange is disposed on a surface of the second annular flange remote from the first port.

4. An arthroscopic access cannula device according to claim 3 and wherein,

the outer sleeve further comprises a first locking mechanism; the inner sleeve further comprises a second locking mechanism; the first locking mechanism is matched with the second locking mechanism and used for locking and connecting the outer sleeve and the inner sleeve.

5. The arthroscopic access cannula device of claim 4 wherein,

the first locking mechanism comprises a protrusion arranged on the second annular flange, and the second locking mechanism comprises a locking belt; one end of the locking belt is connected with the first annular flange, and the other end of the locking belt is provided with a retaining ring matched with the protrusion; or (b)

The first locking mechanism comprises a first magnetic attraction piece embedded on the second annular flange, and the second locking mechanism comprises a second magnetic attraction piece embedded on the first annular flange.

6. An arthroscopic access cannula device according to any of claims 1-5 and wherein,

the arthroscopic access cannula device further comprises a flexible connection handle; one end of the flexible connecting handle is connected with the first annular flange, and the other end of the flexible connecting handle is connected with the outer side surface of the second port or the second annular flange.

7. An arthroscopic access cannula device according to any of claims 1-5 and wherein,

the materials of the outer sleeve and the inner sleeve are silica gel; the outer diameter of the second pipe body is smaller than the inner diameter of the first pipe body; the outer surface of the second pipe body is provided with a plurality of annular sealing ribs, and the annular sealing ribs are attached to the inner surface of the first pipe body.

8. An arthroscopic access cannula device according to any of claims 1-5 and wherein,

the length of the inner sleeve is one third to two thirds of the length of the outer sleeve.

9. An arthroscopic access cannula device according to any of claims 1-5 and wherein,

the arthroscope access cannula device further comprises an annular buckle, wherein the inner surface of the annular buckle is provided with a first connecting mechanism;

the outer side of the first port has a third annular flange; the outer surface of the pipe section of the first pipe body, which is close to the second port, is provided with a second connecting mechanism; the annular buckle is sleeved on the outer side of the first pipe body and limited at different positions of the first pipe body along the axial direction by the second connecting mechanism.

10. The arthroscopic access cannula device of claim 9 wherein,

the annular buckle is provided with a notch, the first connecting mechanism is a clamping groove on the inner surface of the annular buckle, and the second connecting mechanism is a clamping block protruding from the outer surface of the first pipe body.