Shoulder arthroscopic retractor device

Abstract

A shoulder arthroscopic retractor device relates to the field of medical equipment technology. The device includes a sheath tube and multiple pull tabs. The sheath tube is a tube body with open ends. The pull tab is in the shape of a vertical bar. The upper and lower ends of the pull tab are bent horizontally and in the same bending direction, and the bent portion at the lower end of the pull tab is elastic. The upper part of the tube wall of the sheath tube is provided with multiple vertical guide grooves, and each guide groove is arranged at intervals along the circumference of the sheath tube. When the bent portion at the upper end of the pull tab is inserted into the guide groove, the bent portion at the lower end of the pull tab extends out of the lower end of the sheath tube. The sheath tube is sleeved with a push nut and a positioning nut that can move up and down. The push nut and the positioning nut are both threaded with the sheath tube, and the push nut is located above the positioning nut. The device provided by the present invention is suitable for use in clinical shoulder arthroscopic surgery.

Description

Technical Field

[0001] The present invention relates to medical equipment technology, in particular to a technology of a retractor device under shoulder arthroscopy. Background Art

[0002] During shoulder arthroscopy, the operating field of view is very limited, especially during subacromial procedures. The surrounding muscle and synovial tissue often obstructs the arthroscopic field of view. Excessive soft tissue cleaning can easily cause bleeding, further compromising the field of view. Furthermore, changing the field of view often requires further field cleaning, significantly delaying the procedure. During rotator cuff surgery, a significant amount of time is often required to clean the surgical field, which can lead to limb swelling, a difficult procedure, and other complications. Summary of the Invention

[0003] In view of the defects existing in the above-mentioned prior art, the technical problem to be solved by the present invention is to provide a shoulder arthroscopic retractor device which has a clear surgical field of view and can bring convenience to shoulder arthroscopic surgery.

[0004] In order to solve the above technical problems, the present invention provides a shoulder arthroscopic retractor device, comprising a sheath tube, wherein the sheath tube is a tube body with upper and lower ends open, and is characterized in that it also includes a plurality of pull tabs;

[0005] The pull tab is in the shape of a vertical strip, the upper and lower ends of the pull tab are bent horizontally in the same bending direction, and the bending portion of the lower end of the pull tab is elastic;

[0006] The upper part of the tube wall of the sheath tube is provided with a plurality of vertical guide grooves, and the guide grooves are arranged at intervals along the circumference of the sheath tube. When the bent portion at the upper end of the pull tab is inserted into the guide groove, the bent portion at the lower end of the pull tab extends out of the lower end tube opening of the sheath tube.

[0007] The sheath tube is sleeved with a push nut and a positioning nut which can move up and down. The push nut and the positioning nut are both matched with the sheath tube thread, and the push nut is located above the positioning nut.

[0008] Furthermore, it also includes a tube core that can be inserted into the sheath tube. The tube core is a column, and the length of the tube core is greater than the length of the sheath tube, so that after the tube core is inserted into the sheath tube, the upper and lower ends of the tube core can extend out of the upper and lower tube openings of the sheath tube respectively.

[0009] Furthermore, it also includes an elastic tube cap for covering the tube opening at the upper end of the sheath tube, wherein the tube cap is provided with a crack for the rod-shaped instrument to pass through, and the crack is closed under normal conditions.

[0010] Furthermore, an annular gasket is placed on the sheath tube, the gasket is located above the push nut, and the gasket and the sheath tube are movably matched. The inner ring of the gasket is formed with multiple inwardly protruding flanges, and each flange of the inner ring of the gasket extends into each guide groove on the sheath tube.

[0011] The arthroscopic retractor device provided by the present invention can use the elastic bending part at the lower end of the pull piece to expand and pull the tissue in the patient's shoulder joint cavity, and can use the fine adjustment of the nut to enable the pulling part to maintain a certain tension, thereby ensuring a clear surgical field of view in the patient's shoulder joint cavity and bringing convenience to the shoulder arthroscopic surgery operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is an exploded view of an arthroscopic retractor device according to an embodiment of the present invention;

[0013] Figure 2 Schematic diagram of the shoulder arthroscopic retractor device according to an embodiment of the present invention, wherein the upper end of the sheath tube is sealed with a tube cap and the tube core is inserted into the sheath tube;

[0014] Figure 3 This is a schematic diagram of the shoulder arthroscopic retractor device according to an embodiment of the present invention, when the pull tab is inserted into the sheath and is not pushed by the push nut;

[0015] Figure 4 Schematic diagram of a push nut pushing a pull tab in a shoulder arthroscopic retractor device according to an embodiment of the present invention;

[0016] Figure 5 Schematic diagram of a shoulder arthroscopic retractor device in an embodiment of the present invention, wherein the upper end of the sheath tube is sealed with a tube cap;

[0017] Figure 6 Schematic diagram of the structure of a gasket in a shoulder arthroscopic retractor device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0018] The following is a further detailed description of an embodiment of the present invention in conjunction with the accompanying drawings, but this embodiment is not intended to limit the present invention. All similar structures and similar variations of the present invention should be included in the scope of protection of the present invention. The commas in the present invention all represent the relationship of and.

[0019] like Figures 1-6 As shown, an embodiment of the present invention provides a shoulder arthroscopic retractor device, comprising a sheath 1, a core tube 2 that can be inserted into the sheath, and a plurality of pull tabs 3;

[0020] The sheath tube 1 is a tube body with upper and lower ends open, and the tube core 2 is a column, and the length of the tube core is greater than the length of the sheath tube, so that after the tube core is inserted into the sheath tube, the upper and lower ends of the tube core can extend out of the upper and lower ends of the sheath tube respectively;

[0021] The pull tab 3 is in the shape of a vertical strip, and the upper and lower ends of the pull tab 3 are bent transversely in the same bending direction, and the bending portion 32 at the lower end of the pull tab is elastic;

[0022] The upper part of the tube wall of the sheath tube 1 is provided with a plurality of vertical guide grooves 11, and each guide groove 11 is arranged at intervals along the circumference of the sheath tube. When the bent portion 31 at the upper end of the pull tab is inserted into the guide groove 11, the bent portion 32 at the lower end of the pull tab extends out of the lower end of the sheath tube.

[0023] The sheath is sleeved with a push nut 5 and a positioning nut 4 that can move up and down. The push nut and the positioning nut are both matched with the sheath thread, and the push nut 5 is located above the positioning nut 4.

[0024] In the embodiment of the present invention, an elastic cap 7 is further included for covering the upper end of the sheath tube. The cap 7 is provided with a slit for allowing a rod-shaped instrument to pass through, and the slit is closed under normal conditions (i.e., the slit is in a closed state when not under pressure).

[0025] In an embodiment of the present invention, an annular gasket 6 is mounted on the sheath tube. The gasket 6 is located above the push nut, and the gasket and the sheath tube are movably matched. The inner ring of the gasket 6 is formed with multiple inwardly protruding flanges 61, and each flange 61 of the inner ring of the gasket extends into each guide groove 11 on the sheath tube respectively.

[0026] The embodiment of the present invention is suitable for clinical shoulder arthroscopic surgery, and its use is as follows:

[0027] First, seal the upper end of the sheath tube with the tube cap 7, and insert the tube core 2 into the sheath tube 1 through the crack on the tube cap ( Figure 2 The upper and lower ends of the tube core extend out of the upper and lower ends of the sheath tube, and then the sheath tube with the tube core is inserted into the patient's shoulder joint cavity through the surgical incision, and then the positioning nut 4 is turned to move it down close to the patient's skin, and then the tube core is pulled out of the sheath tube and the tube cap 7 is unscrewed;

[0028] Then, each pull tab 3 is inserted into the sheath tube 1, and the bent portion 31 at the upper end of each pull tab is inserted into each guide groove 11. The bent portion 32 at the lower end of the pull tab will elastically deform during the insertion process into the sheath tube 1. When the bent portion 32 at the lower end of the pull tab extends out of the lower end of the sheath tube, it will return to its original shape under the action of elastic force.

[0029] After observing that the bent portion 32 at the lower end of each pull tab is fully extended under the microscope, the positioning nut 4 is screwed down to move it downward until it contacts the patient's skin, thereby achieving the positioning of the sheath. At the same time, when the bent portion 32 at the lower end of the pull tab is fully extended, it can open up the tissues (such as the joint capsule and muscles) in the patient's shoulder joint cavity, thereby ensuring a clear view of the patient's shoulder joint cavity without any obstruction by soft tissue.

[0030] Then, as needed, the push nut 5 is turned to move it upward. After the push nut 5 moves up to against the gasket 6, the gasket 6 can be pushed upward. The inwardly protruding flanges 61 on the gasket 6 also push the bent portions 31 at the upper ends of the pull tabs upward, causing the pull tabs 3 to move upward. The bent portions 32 at the lower ends of the pull tabs also pull the tissue in the patient's shoulder joint cavity, so that the pulled part can maintain a certain tension. Then, the tube cap 7 is screwed on, and the intraoperative operating instruments are passed through the sheath 1 through the crack on the tube cap and into the patient's shoulder joint cavity. Then, the shoulder arthroscopic surgery can be performed.

[0031] The number of pull tabs inserted into the sheath can be appropriately increased or decreased according to the degree of obstruction of the surgical field of view by the tissue in the patient's shoulder joint cavity. The sheath can also be rotated to adjust each pull tab to the required expansion position.

Claims

1. A shoulder arthroscopic retractor device, comprising a sheath tube, wherein the sheath tube is a tube body with upper and lower ends open, characterized in that: Also included are a plurality of pull tabs and a stylet that can be inserted into the sheath; The pull tab is in the shape of a vertical strip, the upper and lower ends of the pull tab are bent horizontally in the same bending direction, and the bending portion of the lower end of the pull tab is elastic; The upper part of the tube wall of the sheath tube is provided with a plurality of vertical guide grooves, and the guide grooves are arranged at intervals along the circumference of the sheath tube. When the bent portion at the upper end of the pull tab is inserted into the guide groove, the bent portion at the lower end of the pull tab extends out of the lower end tube opening of the sheath tube. The sheath is sleeved with a push nut and a positioning nut that can move up and down. The push nut and the positioning nut are both matched with the sheath thread, and the push nut is located above the positioning nut; An annular gasket is sleeved on the sheath tube, the gasket is located above the push nut, and the gasket and the sheath tube are movably matched. The inner ring of the gasket is formed with multiple inwardly protruding flanges, and each flange of the inner ring of the gasket extends into each guide groove on the sheath tube; After twisting the push nut until it moves up to against the gasket, the gasket is pushed upward. The inwardly protruding flanges on the gasket also push upward the bent parts of the upper ends of each pull tab, causing each pull tab to move upward. The bent parts of the lower ends of each pull tab also pull the tissue in the patient's shoulder joint cavity, so that the pulled part can maintain a certain tension.

2. The arthroscopic retractor device according to claim 1, characterized in that: The tube core is a column, and its length is greater than that of the sheath tube, so that after the tube core is inserted into the sheath tube, the upper and lower ends of the tube core can extend out of the upper and lower tube openings of the sheath tube respectively.

3. The arthroscopic retractor device according to claim 1, characterized in that: The invention also comprises an elastic tube cap for covering the tube opening at the upper end of the sheath tube. The tube cap is provided with a crack for allowing a rod-shaped instrument to pass through, and the crack is closed under normal conditions.

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