Rotating wheel mechanism suitable for operating forceps

Abstract

The rotating wheel mechanism comprises a rotating wheel, a shaft sleeve is arranged in the rotating wheel, the rear end of the shaft sleeve is movably connected with a fixing sleeve, an inner sleeve is arranged between the shaft sleeve and the fixing sleeve, the outer sides of the shaft sleeve and the fixing sleeve are both connected with a front sleeve, and a circle of first steel ball set is arranged on the inner side of the front end of the shaft sleeve. A circle of second steel ball set is arranged on the inner side of the front end of the fixing sleeve, a first compression spring for controlling the first steel ball set is arranged between the front sleeve and the fixing sleeve, and a second compression spring for controlling the second steel ball set is arranged between the inner sleeve and the fixing sleeve. The utility model has the advantages of simple structure, smooth rotation, capability of effectively preventing jamming, and convenience in disassembly and assembly.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, and particularly relates to a rotating wheel mechanism applicable to surgical forceps. Background Art

[0002] The surgical forceps used in medical devices generally have a rotating wheel mechanism. Especially for surgical forceps with special-shaped forceps heads, the function of the rotating wheel mechanism is mainly to control the rotation of the forceps head by rotating the rotating wheel, so as to help doctors use the forceps head at the best angle; there are many types of existing forceps heads, and during the surgical process, the universal forceps rod needs to be quickly replaced, and when cleaning and disinfecting, the forceps rod and the forceps handle need to be disassembled. Therefore, we urgently need a rotating wheel mechanism that can achieve quick replacement of the forceps rod.

[0003] A laparoscopic clip applier joint is disclosed in the Chinese patent with the publication number CN204484225U. The clip applier joint in this utility model can achieve the replacement of the universal forceps rod. However, it is found in actual use that there is a lack of an anti-jamming component between each accessory, and the positioning components of the rotating wheel seat are prone to jamming during use. And during the disassembly process, the hand needs to always hold the rotating wheel to loosen the steel balls so that the forceps rod can be separated from the forceps handle; during installation, the rotating wheel also needs to be manually held to insert the forceps rod, and the disassembly and assembly are quite laborious. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the deficiencies existing in the prior art, and provide a rotating wheel mechanism applicable to surgical forceps with a reasonable structural design, smooth rotation, effective anti-jamming, and convenient disassembly and assembly.

[0005] The technical solution adopted by the utility model to solve the above problems is: a rotating wheel mechanism applicable to surgical forceps, including a rotating wheel. An inner sleeve is provided inside the rotating wheel. The rear end of the inner sleeve is movably connected to a fixed sleeve. An inner sleeve is provided between the inner sleeve and the fixed sleeve. Front sleeves are connected to the outer sides of the inner sleeve and the fixed sleeve. A first group of steel balls is provided on the inner side of the front end of the inner sleeve, and a second group of steel balls is provided on the inner side of the front end of the fixed sleeve. A first compression spring for controlling the first group of steel balls is provided between the front sleeve and the fixed sleeve, and a second compression spring for controlling the second group of steel balls is provided between the inner sleeve and the fixed sleeve.

[0006] In the aforementioned rotating wheel mechanism applicable to surgical forceps, the front sleeve is provided with a first groove and a second groove. The first groove can hold the steel balls of the first group of steel balls, and the second groove can hold the steel balls of the second group of steel balls.

[0007] In the aforementioned rotating wheel mechanism applicable to surgical forceps, a fixed shaft is provided on the inner side of the inner sleeve. The fixed shaft penetrates through the inner sleeve, and a pushing groove is provided on the outer side. The pushing groove supports the second group of steel balls.

[0008] In the aforementioned rotating wheel mechanism applicable to surgical forceps, the function of the first steel ball group is to lock the forceps rod, and the function of the second steel ball group is to lock the rotating wheel. The force for locking the forceps rod is greater than the force for locking the rotating wheel. Therefore, the steel balls of the first steel ball group have a larger diameter than those of the second steel ball group.

[0009] In the aforementioned rotating wheel mechanism applicable to surgical forceps, in order to enable the rotating wheel to slide together with the front sleeve and the fixed sleeve, and to make the steel balls in the first steel ball group and the second steel ball group fall into the set grooves, the front sleeve is fixedly connected to the rotating wheel. A gasket is provided at the rear end of the fixed sleeve, and a compression cap is provided at the rear end of the gasket. The compression cap is fixedly connected to the rotating wheel.

[0010] In the aforementioned rotating wheel mechanism applicable to surgical forceps, the outer side of the rear end of the bushing is connected to the front forceps handle.

[0011] Compared with the prior art, the present utility model is provided with a first steel ball group and a second steel ball group. The forceps rod is locked by the steel balls of the first steel ball group; when the rotating wheel is pulled backward, the steel balls of the first steel ball group fall into the first groove of the front sleeve, and the forceps rod is loosened; the steel balls of the second steel ball group fall into the second groove of the front sleeve, clamping the front sleeve and the rotating wheel, so that the front sleeve cannot move forward, ensuring that the steel balls of the first steel ball group are movable, and there is no need to always hold the rotating wheel by hand, making it very convenient to install and disassemble the forceps rod;

[0012] Furthermore, by providing an inner sleeve, when installing the forceps rod, the fixed shaft on the inner sleeve is driven to move backward, and at the same time, the push groove is driven to move backward, driving the steel balls of the second steel ball group to move downward, the front sleeve and the rotating wheel are reset forward, and the steel balls of the first steel ball group are pressed downward to lock the forceps rod;

[0013] Furthermore, the front sleeve, the bushing, the inner sleeve, and the fixed sleeve are relatively independent and cooperate with each other to make the rotation of the rotating wheel smooth;

[0014] In summary, the present utility model has the advantages of simple structure, smooth rotation, effective prevention of jamming, and convenient disassembly and assembly. Brief Description of the Drawings

[0015] Figure 1 is the overall structural schematic diagram of the present utility model;

[0016] Figure 2 is the working structural schematic diagram of the first steel ball group of the present utility model;

[0017] Figure 3 is the working structural schematic diagram of the second steel ball group of the present utility model;

[0018] Figure 4 is the cross-sectional schematic diagram of the inner sleeve of the present utility model;

[0019] Figure 5 is the cross-sectional schematic diagram of the front sleeve of the present utility model;

[0020] The markings in the accompanying drawings are: 1, rotating wheel; 2, front sleeve; 21, first groove; 22, second groove; 3, nut; 4, first steel ball group; 5, second steel ball group; 6, bushing; 7, first compression spring; 8, inner sleeve; 81, fixed shaft; 82, push groove; 9, second compression spring; 10, fixed sleeve; 11, gasket; 12, pressure cap; 14, clamp rod; 15, clamp rod accessories; 16, front clamp handle. DETAILED DESCRIPTION

[0021] The technical solution of the present invention is further specifically described below through embodiments and in combination with the accompanying drawings, but it is not intended to limit the present invention.

[0022] Embodiment 1. A rotary wheel mechanism suitable for surgical forceps, such as Figures 1-5 As shown, it includes a rotating wheel 1, the front end of the rotating wheel 1 is fixedly connected to the front sleeve 2, and the rear end is fixedly connected to the pressure cap 12. The front sleeve 2 is provided with a first groove 21 and a second groove 22. The first groove 21 can accommodate the steel balls of the first steel ball group 4, and the second groove 22 can accommodate the steel balls of the second steel ball group 5.

[0023] The front end of the inner side of the front sleeve 2 is connected to the shaft sleeve 6, and the rear end of the inner side of the front sleeve 2 is connected to the fixed sleeve 10. A circle of first steel ball group 4 is provided on the inner side of the front end of the shaft sleeve 6, and a circle of second steel ball group 5 is provided on the inner side of the front end of the fixed sleeve 10. The steel balls of the first steel ball group 4 have a larger diameter than those of the second steel ball group 5. Both the first steel ball group 4 and the second steel ball group 5 have three steel balls.

[0024] An inner sleeve 8 is provided between the shaft sleeve 6 and the fixed sleeve 10 , and a fixed shaft 81 is provided inside the inner sleeve 8 . The fixed shaft 81 passes through the waist-shaped hole at the middle end of the shaft sleeve 6 , and a push groove 82 is provided outside to support the second steel ball group 5 .

[0025] A first compression spring 7 for controlling the first steel ball group 4 is provided between the front sleeve 2 and the fixed sleeve 10 , and a second compression spring 9 for controlling the second steel ball group 5 is provided between the inner sleeve 2 and the fixed sleeve 10 .

[0026] The front side of the shaft sleeve 6 is connected with a nut 3 , the rear end of the fixing sleeve 10 is provided with a gasket 11 , the gasket 11 is sleeved on the outer side of the rear end of the shaft sleeve, and the gasket 11 is connected with a front clamp handle 16 .

[0027] The state of the rotating wheel mechanism when the surgical forceps is in normal use: see Figure 2 , the rotating wheel 1 is flush with the nut 3, the first compression spring 7 acts on the inner sleeve 2, the first steel ball group 4 does not fall into the first groove 21, but is supported by the inner sleeve 2 to lock the clamp rod 14; the second steel ball group 5 does not fall into the second groove 22, and the rotating wheel 1 is free.

[0028] When removing the pliers rod, pull the rotating wheel 1 forcefully. The state of the rotating wheel mechanism is shown in Figure 3 , there is a distance between the rotating wheel 1 and the nut 3. The first steel ball group 4 falls into the first groove 21, and the pliers rod is loosened; the second compression spring 9 pushes the inner sleeve 8 forward, and the second steel ball group 5 falls into the second groove 22, and the second steel ball group 5 abuts against the front sleeve 2 and the rotating wheel 1.

[0029] When reinstalling the pliers rod, insert the pliers rod 14 and the pliers rod fitting 15, push the fixed shaft 81 on the inner sleeve 8 backward. The inner sleeve 8 drives the steel balls of the second steel ball group 5 to move downward. The rotating wheel 1 freely returns forward. The steel balls of the first steel ball group 4 are pressed downward and fall into the steel ball groove in the pliers rod fitting 15 to lock the pliers rod 14. When the rotating wheel 1 is rotated, the pliers rod 14 rotates accordingly.

Claims

1. A rotating wheel mechanism applicable to a surgical forceps, comprising a rotating wheel (1), characterized in that: A bushing (6) is provided inside the described runner (1). A fixed sleeve (10) is movably connected to the rear end of the bushing (6). An inner sleeve (8) is provided between the bushing (6) and the fixed sleeve (10). Front sleeves (2) are connected to the outer sides of both the bushing (6) and the fixed sleeve (10). A first set of steel balls (4) is provided in a circle on the inner side of the front end of the bushing (6). A second set of steel balls (5) is provided in a circle on the inner side of the front end of the fixed sleeve (10). A first compression spring (7) is provided between the front sleeve (2) and the fixed sleeve (10). A second compression spring (9) is provided between the inner sleeve (8) and the fixed sleeve (10).

2. The rotating wheel mechanism applicable to a surgical forceps according to claim 1, wherein: A first groove (21) and a second groove (22) are successively provided on the inner side of the described front sleeve (2).

3. The rotating wheel mechanism applicable to a surgical forceps according to claim 1, characterized in that: A fixed shaft (81) is provided on the inner side of the described inner sleeve (8), and a push groove (82) is provided on the outer side.

4. The rotating wheel mechanism applicable to a surgical forceps according to claim 1, wherein: The steel balls of the first set of steel balls (4) are larger in diameter than the steel balls of the second set of steel balls (5).

5. The rotary mechanism for a surgical forceps according to claim 1, characterized in that: The described front sleeve (2) is fixedly connected to the described runner (1).

6. The rotating wheel mechanism applicable to a surgical forceps according to claim 1, characterized in that: A nut (3) is connected to the front side of the described bushing (6).

7. A rotating wheel mechanism applicable to a surgical forceps according to claim 1, characterized in that: A gasket (11) is provided at the rear end of the described fixed sleeve (10). A compression cap (12) is provided at the rear end of the gasket (11). The compression cap (12) is fixedly connected to the described runner (1).

8. A rotary wheel mechanism applicable to a surgical forceps according to claim 1, characterized in that: A front pliers handle (16) is connected to the outer side of the rear end of the described bushing (6).

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