Shoulder arthroscope anti-falling sleeve assembly

Abstract

The utility model relates to the technical field of medical instruments, in particular to a shoulder arthroscopy anti-falling type cannula assembly which comprises a cannula mechanism and is used for guiding and positioning surgical instruments entering a joint channel, the cannula mechanism comprises a sheathing canal assembly, the sheathing canal assembly comprises a blocking base fixed to the outer wall of the lower end of a sheathing canal, and a threaded sleeve is installed on the outer wall of the upper end of the blocking base; a suction nozzle is mounted at the lower end of the baffle seat and used for draining impurity blood; the anti-falling assembly comprises an expansion sleeve installed outside the sheathing canal in a sleeving mode, an upper circular truncated cone opening and a lower circular truncated cone opening are formed in the upper end and the lower end in the expansion sleeve respectively, and an upper circular truncated cone sleeve and a lower circular truncated cone sleeve are installed in the upper circular truncated cone opening and the lower circular truncated cone opening respectively; positive pressure is generated between the expanded expansion sleeve and a through hole of a shoulder joint operation part, friction self-locking is formed, the sleeve mechanism is fixed in the through hole under the combined action of friction force and the self-locking effect, and extra damage to tissues around the inner wall of the through hole is reduced.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a shoulder arthroscopy anti-dislodgement cannula assembly. Background Technology

[0002] In minimally invasive shoulder surgery, the arthroscopy needs to rely on the sheath to create a surgical channel to enter the body cavity, and water or air needs to be introduced to complete the corresponding surgical procedures.

[0003] According to CN112206016A, a shoulder arthroscopy anti-dislodgement cannula assembly is disclosed. This technology discloses "a shoulder arthroscopy anti-dislodgement cannula assembly, comprising: a sheath component having a cavity for accommodating a sheath component and an anti-dislodgement component; an anti-dislodgement component disposed within the cavity with barbs pressing against the inner wall of the sheath component; and a sheath component comprising a handle and a sheath body, the sheath body being inserted into the hollow cavity of the anti-dislodgement component for insertion into a predetermined location in the shoulder joint." This technology achieves the technical effect of "achieving dual fixation through the threads on the outer wall of the sheath and the anti-dislodgement component, thereby effectively ensuring the normal progress of the surgery."

[0004] The above-mentioned method uses barbs on the anti-drop component to pierce the easy-to-perforate hole on the sheath and enter the side wall of the perforation at the surgical site to achieve further fixation; however, the barb fixation method will cause additional damage to the surrounding tissues after the barbs pierce the side wall of the perforation at the surgical site, which will not only increase the amount of bleeding during the operation, but may also cause pain and discomfort to the patient. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a shoulder arthroscopy anti-dislodgement cannula assembly. The expanded cannula generates positive pressure with the perforation at the shoulder joint surgical site, forming a frictional self-locking mechanism. This frictional force and self-locking effect work together to fix the cannula mechanism in the perforation and reduce additional damage to the tissues surrounding the inner wall of the perforation.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a shoulder arthroscopy anti-dislodgement cannula assembly, comprising a cannula mechanism for guiding and positioning surgical instruments as they enter the joint channel. The cannula mechanism includes:

[0007] The sheath assembly includes a stop fixed to the outer wall of the lower end of the sheath, a threaded sleeve installed on the outer wall of the upper end of the stop, and a suction nozzle installed at the lower end of the stop for draining impurities and blood.

[0008] The anti-detachment component includes an expansion sleeve fitted onto the outside of the sheath tube. The expansion sleeve has an upper frustum opening and a lower frustum opening at its upper and lower ends, respectively. An upper frustum sleeve and a lower frustum sleeve are respectively installed inside the upper frustum opening and the lower frustum opening.

[0009] Preferably, the anti-detachment component further includes several slots circumferentially distributed at the upper and lower ends of the expansion sleeve.

[0010] Preferably, the sheath assembly further includes a threaded seat fixed to the bottom of the stop, and the suction nozzle is threadedly mounted on the threaded seat.

[0011] Preferably, the sheath assembly further includes a threaded groove formed on the outer wall of the upper end of the sheath, and the sheath is threadedly installed with the threaded sleeve through the threaded groove.

[0012] Preferably, the sheath assembly further includes a connector rotatably mounted on the upper end of the sheath for connecting to a negative pressure device.

[0013] Preferably, the expansion sleeve is made of medical rubber, and the outer wall surface of the expansion sleeve has a frosted structure.

[0014] Beneficial effects

[0015] This invention provides a shoulder arthroscopy anti-dislodgement cannula assembly. Compared with the prior art, it has the following advantages:

[0016] 1. During shoulder joint surgery, a perforation is made at the surgical site on the shoulder joint, and the cannula mechanism is inserted into the perforation. One hand holds the sheath, while the other hand rotates the threaded sleeve, causing the threaded sleeve to compress the upper frustum sleeve into the upper frustum opening of the expansion sleeve. At the same time, it pushes the expansion sleeve downward slightly, causing the lower frustum sleeve to compress into the lower frustum opening under the restriction of the stop. Thus, the upper and lower frustum sleeves expand the expansion sleeve. The expanded expansion sleeve generates positive pressure with the perforation at the surgical site of the shoulder joint, forming a frictional self-locking effect. This frictional force and self-locking effect work together to fix the cannula mechanism in the perforation and reduce additional damage to the tissues around the inner wall of the perforation.

[0017] 2. The suction nozzle can be disassembled and installed from the threaded seat, allowing for the replacement of different sizes of suction nozzles according to the needs of the operation; it can be connected to a negative pressure device through the connector to drain and discharge waste, impurities and blood, so as to facilitate subsequent surgical operations; when the expansion sleeve is compressed and expanded, the abrasive structure on the outer wall surface increases the friction with the side wall of the perforation at the surgical site. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a cross-sectional view of the present invention;

[0020] Figure 3 This is an exploded view of the present invention;

[0021] Figure 4 This is a cross-sectional exploded view of the anti-detachment component in this utility model.

[0022] In the diagram: 1. Sleeve mechanism; 11. Sheath assembly; 111. Sheath; 112. Stop; 113. Threaded sleeve; 114. Suction nozzle; 115. Threaded seat; 116. Threaded groove; 117. Connector; 12. Anti-detachment assembly; 121. Expansion sleeve; 122. Upper frustum opening; 123. Lower frustum opening; 124. Upper frustum sleeve; 125. Lower frustum sleeve; 126. Groove. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1 - Figure 4 This utility model provides a technical solution: a shoulder arthroscopy anti-dislodgement cannula assembly, including a cannula mechanism 1 for guiding and positioning surgical instruments into the joint channel. The cannula mechanism 1 includes:

[0025] The sheath assembly 11 includes a stop 112 fixed to the outer wall of the lower end of the sheath 111, a threaded sleeve 113 installed on the outer wall of the upper end of the stop 112, and a suction nozzle 114 installed at the lower end of the stop 112 for draining impurities and blood.

[0026] The anti-detachment component 12 includes an expansion sleeve 121 that is sleeved and installed outside the sheath tube 111. The upper and lower ends of the expansion sleeve 121 are respectively provided with an upper frustum opening 122 and a lower frustum opening 123. An upper frustum sleeve 124 and a lower frustum sleeve 125 are respectively installed inside the upper frustum opening 122 and the lower frustum opening 123.

[0027] In this embodiment, during shoulder joint surgery, a perforation is made at the surgical site on the shoulder joint, and the sheath mechanism 1 is inserted into the perforation. One hand holds the sheath 111, while the other hand rotates the threaded sleeve 113, causing the threaded sleeve 113 to compress the upper frustum sleeve 124 into the upper frustum opening 122 of the expansion sleeve 121. At the same time, the expansion sleeve 121 is pushed downward slightly, causing the lower frustum sleeve 125 to be compressed into the lower frustum opening 123 under the restriction of the stop 112. Thus, the upper frustum sleeve 124 and the lower frustum sleeve 125 expand the expansion sleeve 121. The expanded expansion sleeve 121 generates positive pressure with the perforation at the surgical site of the shoulder joint, forming a frictional self-locking. This frictional force and self-locking effect work together to fix the sheath mechanism 1 in the perforation and reduce additional damage to the tissues around the inner wall of the perforation.

[0028] Specifically, the anti-detachment component 12 also includes several slots 126 distributed circumferentially at the upper and lower ends of the expansion sleeve 121.

[0029] In this embodiment, when the expansion sleeve 121 is squeezed by the upper frustum sleeve 124 and the lower frustum sleeve 125, the slot 126 allows it to have a certain space for contraction and expansion.

[0030] Specifically, the sheath assembly 11 also includes a threaded seat 115 fixed to the bottom of the stop 112, and the suction nozzle 114 is threaded onto the threaded seat 115.

[0031] In this embodiment, the suction nozzle 114 can be disassembled and installed from the threaded seat 115, allowing different specifications of suction nozzle 114 to be replaced according to the needs of use during surgery.

[0032] Specifically, the sheath assembly 11 also includes a threaded groove 116 formed on the outer wall of the upper end of the sheath 111, and the sheath 111 is threadedly installed with the threaded sleeve 113 through the threaded groove 116.

[0033] In this embodiment, the threaded sleeve 113 can be rotated to move up and down, thereby controlling the expansion of the anti-detachment component 12.

[0034] Specifically, the sheath assembly 11 also includes a connector 117 rotatably mounted on the upper end of the sheath 111 and used to connect to a negative pressure device.

[0035] In this embodiment, a negative pressure device can be connected via connector 117 to drain and discharge waste, impurities, and blood, facilitating subsequent surgical procedures.

[0036] Specifically, the expansion sleeve 121 is made of medical-grade rubber, and the outer surface of the expansion sleeve 121 has a frosted structure.

[0037] In this embodiment, when the expansion sleeve 121 is compressed and expanded, the frosted structure on the outer wall surface increases the friction with the side wall of the perforation at the surgical site.

[0038] The working principle and usage process of this utility model are as follows: First, during shoulder joint surgery, a perforation is made at the surgical site on the shoulder joint, and then the sheath mechanism 1 is inserted into the perforation. Then, one hand holds the sheath 111, and the other hand rotates the threaded sleeve 113, causing the threaded sleeve 113 to squeeze the upper frustum sleeve 124 into the upper frustum opening 122 of the expansion sleeve 121. At the same time, it pushes the expansion sleeve 121 downward slightly, so that under the restriction of the stop 112, it squeezes the lower frustum sleeve 125 into the lower frustum opening 123. Thus, the upper frustum sleeve 124 and the lower frustum sleeve 125 expand the expansion sleeve 121. The expanded expansion sleeve 121 generates positive pressure with the perforation at the surgical site of the shoulder joint, forming a frictional self-locking. This frictional force and self-locking effect work together to fix the sheath mechanism 1 in the perforation and reduce additional damage to the tissues around the inner wall of the perforation.

[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A shoulder arthroscopy anti-dislodgement cannula assembly, characterized in that: The cannula mechanism (1) includes a cannula for guiding and positioning surgical instruments into the joint canal. The cannula mechanism (1) includes: The sheath assembly (11) includes a stop (112) fixed to the outer wall of the lower end of the sheath (111), a threaded sleeve (113) installed on the outer wall of the upper end of the stop (112), and a suction nozzle (114) installed at the lower end of the stop (112) for draining impurities and blood. The anti-detachment component (12) includes an expansion sleeve (121) fitted onto the outside of the sheath tube (111). The upper and lower ends of the expansion sleeve (121) are respectively provided with an upper frustum opening (122) and a lower frustum opening (123). An upper frustum sleeve (124) and a lower frustum sleeve (125) are respectively installed inside the upper frustum opening (122) and the lower frustum opening (123).

2. The anti-dislodgement sleeve assembly for shoulder arthroscopy according to claim 1, characterized in that: The anti-detachment component (12) also includes a number of slots (126) circumferentially distributed at the upper and lower ends of the expansion sleeve (121).

3. The anti-dislodgement sleeve assembly for shoulder arthroscopy according to claim 1, characterized in that: The sheath assembly (11) also includes a threaded seat (115) fixed to the bottom of the stop (112), and the suction nozzle (114) is threaded onto the threaded seat (115).

4. The anti-dislodgement sleeve assembly for shoulder arthroscopy according to claim 1, characterized in that: The sheath assembly (11) further includes a threaded groove (116) formed on the outer wall of the upper end of the sheath (111), and the sheath (111) is threadedly installed with the threaded sleeve (113) through the threaded groove (116).

5. The anti-dislodgement sleeve assembly for shoulder arthroscopy according to claim 1, characterized in that: The sheath assembly (11) also includes a connector (117) rotatably mounted on the upper end of the sheath (111) and used to connect to a negative pressure device.

6. The anti-dislodgement sleeve assembly for shoulder arthroscopy according to claim 1, characterized in that: The expansion sleeve (121) is made of medical rubber, and the outer wall surface of the expansion sleeve (121) has a frosted structure.

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