Retractor device used in shoulder arthroscopy

Abstract

The utility model relates to the technical field of medical instruments, in particular to a retractor device used in shoulder arthroscopy, which comprises a retraction mechanism and is used for retracting shoulder joint peripheral muscle soft tissue, the retraction mechanism comprises an execution component, a shell seat, a connecting head, a connecting rod, a connecting rod and a connecting rod, the shell seat enters the shoulder joint peripheral muscle soft tissue, and the connecting head is fixed at the upper end of the shell seat; a movable claw is pivoted to the lower end of the shell seat, a bump is fixed to the inner wall of the upper end of the movable claw, a guide ring is slidably mounted in the shell seat, and a plug is fixed to the upper end of the guide ring; the adjusting assembly comprises a main rod installed at the upper end of the shell base, and an inner rod is slidably installed in the main rod in a penetrating mode; the endoscope sheath is inserted from the upper end of the inner rod and enters the surgical site of a patient through the guide ring, and chippings, blood and other pollutants generated in the surgical process are drained out. A surgical channel is quickly established, the sheath is prevented from deviating or mistakenly entering other tissues, surgical risks are reduced, more accurate surgical operation is facilitated, and the surgical effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically a retractor device used in shoulder arthroscopy. Background Technology

[0002] With the rapid development of minimally invasive endoscopic techniques in orthopedic clinics, more and more joint surgeons are choosing minimally invasive methods to treat joint diseases. However, due to the long learning curve and high difficulty of shoulder arthroscopy, it has not yet been widely adopted in county-level hospitals nationwide. Furthermore, unlike other orthopedic endoscopic techniques, shoulder arthroscopy requires excellent bleeding control and suture management. Whether in the beach chair position or the lateral decubitus position, the space under the acromion is limited. After prolonged shoulder arthroscopy, the continuous infusion of large amounts of saline solution leads to extensive edema of soft tissues such as the deltoid muscle and bursa, especially when the patient also has severe subacromial bursitis. This further reduces the subacromial field of view, making the arthroscopic procedure increasingly difficult, thus creating a vicious cycle.

[0003] According to CN219042743U, a retraction device for shoulder arthroscopy is disclosed. This technology discloses "a retraction device for shoulder arthroscopy. It includes a shell, a first threaded groove on the top of the shell, a first circular groove on the bottom of the shell, the first threaded groove and the first circular groove are connected, an internal mechanism is provided inside the shell, the internal mechanism includes an adjusting body, a first external thread adapted to the first threaded groove is provided on the outer wall of the adjusting body, a connecting body is fixed at the bottom of the adjusting body, a base is rotatably provided at the bottom of the connecting body, and multiple weights are fixed at the bottom of the base." The device has the technical effect of "the opening angle of the retractor can only be adjusted by rotating the lever and the first handle threadedly connected by the lever. This device does not require manual control of the retraction angle, avoids the problem of the retractor moving and affecting the smooth progress of the operation, avoids the hidden dangers that affect the smooth progress of the operation, and reduces the workload of medical staff."

[0004] During shoulder arthroscopic surgery, the sheath is needed to enter the joint cavity to drain debris, blood, and other contaminants generated during the procedure. However, the above approach only opens the shoulder joint muscle group by using a retraction device, without leaving enough operating space for subsequent surgery. This prevents the sheath used for drainage from smoothly entering the joint cavity from the retraction device, thus affecting the progress of the surgery. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a retractor device for shoulder arthroscopy, which features the ability to quickly establish a surgical channel, prevent the sheath from shifting or accidentally entering other tissues, reduce surgical risks, facilitate more precise surgical operations, and improve surgical outcomes.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a retractor device for use in shoulder arthroscopy, comprising a retractor mechanism for retracting the muscles and soft tissues surrounding the shoulder joint, the retractor mechanism comprising:

[0007] The actuation component includes a housing that enters the soft tissue of the shoulder joint, a connector fixed to the upper end of the housing, a movable claw pivotally connected to the lower end of the housing, a protrusion fixed to the upper inner wall of the movable claw, a guide ring slidably installed inside the housing, and a plug fixed to the upper end of the guide ring.

[0008] The adjustment assembly includes a main rod mounted on the upper end of the housing, an inner rod that is slidably installed through the main rod, and a socket fixed at the lower end of the inner rod that is inserted into and installed with a plug.

[0009] Preferably, the adjustment assembly further includes a sliding groove formed on the outer wall of the inner rod, and the inner rod is slidably installed with the main rod through the sliding groove. A knob sleeve is rotatably installed on the upper end of the main rod, and the inner wall of the knob sleeve is threadedly installed with the outer wall of the inner rod.

[0010] Preferably, the actuating component further includes an annular groove formed on the outer wall of the guide ring, and the protrusion is located in the annular groove.

[0011] Preferably, the pull-opening mechanism further includes a locking head provided at the upper end of the plug, and a locking groove provided on the plug to cooperate with the locking head.

[0012] Preferably, the outer wall of the connector has an external thread groove, the inner wall of the lower end of the main rod has an internal thread groove, and the connector and the main rod are threadedly connected.

[0013] Preferably, the number of movable claws is four, which are circumferentially distributed and pivotally connected to the lower end of the housing, and the lower end of the movable claws has an arc-shaped structure.

[0014] Beneficial effects

[0015] This invention provides a retractor device for use in shoulder arthroscopy. Compared with the prior art, it has the following advantages:

[0016] 1. By using the retraction mechanism to enter the muscles and soft tissues around the shoulder joint and retract them, the endoscope sheath can be inserted from the upper end of the inner rod and guided into the patient's surgical site through the guide ring. This allows for the drainage of debris, blood, and other contaminants generated during the surgery. This enables the rapid establishment of a surgical channel, avoids sheath displacement or accidental entry into other tissues, reduces surgical risks, facilitates more precise surgical operations, and improves surgical outcomes.

[0017] 2. By rotating the knob sleeve, the inner rod moves up and down. The inner rod, through the socket and plug, moves the guide ring up and down. The guide ring, through the groove and protrusion, moves the movable claw open or close, thereby retracting the muscles and soft tissues around the shoulder joint. Since the rotation angle of the knob sleeve is linearly related to the opening degree of the movable claw, precise control of the retraction force can be achieved, providing a stable retraction effect, avoiding slippage during surgery and avoiding tissue damage caused by excessive traction. Attached Figure Description

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

[0019] Figure 2 This is an exploded view of the present invention;

[0020] Figure 3 This is a cross-sectional view of the present invention;

[0021] Figure 4 This is a cross-sectional view of the execution component in this utility model;

[0022] Figure 5 This is a cross-sectional view of the adjustment component in this utility model.

[0023] In the diagram: 1. Pulling mechanism; 11. Actuating component; 111. Housing; 112. Connector; 113. Movable claw; 114. Protrusion; 115. Guide ring; 116. Plug; 117. Ring groove; 12. Adjusting component; 121. Main rod; 122. Inner rod; 123. Slide groove; 124. Socket; 125. Knob sleeve; 13. Clamp head; 14. Clamp slot. Detailed Implementation

[0024] 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.

[0025] Please see Figure 1 - Figure 5 This utility model provides a technical solution: a retractor device for use in shoulder arthroscopy, including a retractor mechanism 1 for retracting the muscles and soft tissues around the shoulder joint. The retractor mechanism 1 includes:

[0026] The execution component 11 includes a housing 111 that enters the soft tissue of the shoulder joint. A connector 112 is fixed to the upper end of the housing 111, and a movable claw 113 is pivotally connected to the lower end of the housing 111. A protrusion 114 is fixed to the inner wall of the upper end of the movable claw 113. A guide ring 115 is slidably installed inside the housing 111, and a plug 116 is fixed to the upper end of the guide ring 115.

[0027] The adjustment assembly 12 includes a main rod 121 installed on the upper end of the housing 111, an inner rod 122 that is slidably installed through the main rod 121, and a socket 124 fixed at the lower end of the inner rod 122 that is inserted into and installed with a plug 116.

[0028] In this embodiment, during shoulder arthroscopic surgery, the retraction mechanism 1 is inserted into the muscles and soft tissues around the shoulder joint and retracted. Then, the endoscope sheath can be inserted from the upper end of the inner rod 122 and enter the patient's surgical site through the guide ring 115 to drain debris, blood, and other contaminants generated during the operation. This allows for the rapid establishment of a surgical channel, avoids endoscope sheath displacement or accidental entry into other tissues, reduces surgical risks, facilitates more precise surgical operations, and improves surgical outcomes.

[0029] Specifically, the adjustment assembly 12 also includes a groove 123 formed on the outer wall of the inner rod 122, and the inner rod 122 is slidably installed with the main rod 121 through the groove 123. A knob sleeve 125 is rotatably installed on the upper end of the main rod 121, and the inner wall of the knob sleeve 125 is threadedly installed with the outer wall of the inner rod 122.

[0030] In this embodiment, rotating the knob sleeve 125 drives the inner rod 122 to move up and down. The inner rod 122, through the socket 124 and the plug 116, drives the guide ring 115 to move up and down. The guide ring 115, through the ring groove 117 and the protrusion 114, drives the movable claw 113 to open or close, thereby achieving the retraction of the muscles and soft tissues around the shoulder joint. Since the rotation angle of the knob sleeve 125 is linearly related to the opening degree of the movable claw 113, precise control of the retraction force can be achieved, providing a stable retraction effect, avoiding slippage during surgery and avoiding tissue damage caused by excessive traction.

[0031] Specifically, the execution component 11 also includes an annular groove 117 formed on the outer wall of the guide ring 115, and the protrusion 114 is located in the annular groove 117.

[0032] In this embodiment, when the guide ring 115 moves downward, it can drive the protrusion 114 to flip outward through the ring groove 117, and when the guide ring 115 moves upward, it can drive the protrusion 114 to flip inward through the ring groove 117.

[0033] Specifically, the pull-opening mechanism 1 also includes a locking head 13 located at the upper end of the plug 116, and a locking slot 14 located on the socket 124 that cooperates with the locking head 13.

[0034] In this embodiment, when the plug 116 is inserted into the socket 124, the clip 13 on the plug 116 is engaged in the slot 14 on the socket 124, thereby fixing the plug 116 to the socket 124.

[0035] Specifically, the outer wall of the connector 112 is provided with an external thread groove, the inner wall of the lower end of the main rod 121 is provided with an internal thread groove, and the connector 112 and the main rod 121 are threadedly connected.

[0036] In this embodiment, the execution component 11 and the adjustment component 12 can be disassembled and assembled, so that execution components 11 and adjustment components 12 of different specifications can be assembled and used.

[0037] Specifically, there are four movable claws 113, which are circumferentially distributed and pivotally connected to the lower end of the housing 111, and the lower end of the movable claws 113 has an arc-shaped structure.

[0038] The working principle and usage process of this utility model are as follows: First, during shoulder arthroscopy, the retraction mechanism 1 is inserted into the muscles and soft tissues around the shoulder joint. By rotating the knob sleeve 125, the inner rod 122 is moved up and down. The inner rod 122 moves up and down through the socket 124 and the plug 116. The guide ring 115 moves up and down through the ring groove 117 and the protrusion 114. The guide ring 115 opens or closes the movable claw 113 through the ring groove 117 and the protrusion 114, thereby retracting the muscles and soft tissues around the shoulder joint.

[0039] Then, the endoscope sheath is inserted from the upper end of the inner rod 122 and enters the patient's surgical site through the guide ring 115 to drain debris, blood and other contaminants generated during the operation; this allows for the rapid establishment of a surgical channel, avoids sheath displacement or accidental entry into other tissues, reduces surgical risks, facilitates more precise surgical operations, and improves surgical outcomes.

[0040] 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.

[0041] 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 retractor device for use in shoulder arthroscopy, characterized in that: Includes a retraction mechanism (1) for retracting the muscles and soft tissues around the shoulder joint, the retraction mechanism (1) including: The execution component (11) includes a housing (111) that enters the soft tissue of the shoulder joint surrounding muscles, a connector (112) fixed to the upper end of the housing (111), a movable claw (113) pivotally connected to the lower end of the housing (111), a protrusion (114) fixed to the upper inner wall of the movable claw (113), a guide ring (115) slidably installed inside the housing (111), and a plug (116) fixed to the upper end of the guide ring (115). The adjustment assembly (12) includes a main rod (121) installed on the upper end of the housing (111), an inner rod (122) is slidably installed inside the main rod (121), and a socket (124) is fixed at the lower end of the inner rod (122) and inserted into the plug (116).

2. The retractor device for use in shoulder arthroscopy according to claim 1, characterized in that: The adjustment assembly (12) further includes a groove (123) formed on the outer wall of the inner rod (122), and the inner rod (122) is slidably installed with the main rod (121) through the groove (123). A knob sleeve (125) is rotatably installed on the upper end of the main rod (121), and the inner wall of the knob sleeve (125) is threadedly installed with the outer wall of the inner rod (122).

3. The retractor device for use in shoulder arthroscopy according to claim 1, characterized in that: The execution component (11) further includes an annular groove (117) formed on the outer wall of the guide ring (115), and the protrusion (114) is located in the annular groove (117).

4. The retractor device for use in shoulder arthroscopy according to claim 2, characterized in that: The pull-opening mechanism (1) also includes a locking head (13) on the upper end of the plug (116), and a locking slot (14) is provided on the socket (124) and cooperates with the locking head (13).

5. A retractor device for use in shoulder arthroscopy according to claim 1, characterized in that: The outer wall of the connector (112) is provided with an external thread groove, and the inner wall of the lower end of the main rod (121) is provided with an internal thread groove, and the connector (112) and the main rod (121) are connected by threads.

6. The retractor device for use in shoulder arthroscopy according to claim 1, characterized in that: The number of movable claws (113) is four and they are circumferentially distributed and pivotally connected to the lower end of the shell base (111), and the lower end of the movable claws (113) is an arc-shaped structure.

Images