Surgical instrument

Abstract

The present invention relates to the field of medical surgical instruments, and particularly relates to a surgical instrument. A surgical instrument includes an operating part, a probe rod, a rotating part and an actuator that are connected in sequence; the operating part is connected to the rotating part, and the operating part is connected to the actuator; the operating part is configured to be able to control the rotating part to drive the actuator to rotate relative to the probe rod and be able to control the actuator to perform an operation, and the rotating part and the probe rod are hinged by a rotating pin. For the surgical instrument of the present invention, the hinge connection between the rotating part and the probe rod enables the rotating part to drive the actuator to bend at a certain angle when the rotating part is relatively short, reducing the turning radius; this surgical instrument expands the range of surgical operations and has positive significance for clinical treatment.

Description

Technical Field

[0001] The present invention relates to the field of medical surgical instruments, and particularly to a surgical instrument. Background Art

[0002] Minimally invasive surgical procedures are performed using various types of medical devices to minimize damage to healthy tissues of patients. Such medical devices are commonly referred to as laparoscopic surgical instruments or laparoscopic electrodes. Such surgical instruments mainly consist of a handle that can be held by an operator, a slender rod usually 30 cm - 50 cm in length, and a movable end effector.

[0003] In the existing technology, due to the use of a multi-joint wrist structure, in a turning structure, there are many joint wrist structures, and each joint wrist can rotate a small angle. If a larger angle needs to be rotated, multiple joint wrist structures are required. Although it can be bent, the length required to turn a certain angle is relatively long, the turning radius is large, and some positions cannot be reached. Summary of the Invention

[0004] The object of the present invention is to provide a surgical instrument to overcome the problem of large turning radius existing in the prior art.

[0005] To achieve the above object, on the one hand, the present invention provides a surgical instrument, including an operation part, a probe rod, a rotating part, and an actuator connected in sequence; the operation part is connected to the rotating part, and the operation part is connected to the actuator; the operation part is configured to be able to control the rotating part to drive the actuator to rotate relative to the probe rod and be able to control the actuator to perform an operation, and the rotating part and the probe rod are hinged through a rotating pin.

[0006] Preferably, the operation part includes a first operator that can slide along the length direction of the probe rod; the first operator is connected to the rotating part through a connecting rod, and both ends of the connecting rod are respectively hinged to the first operator and the rotating part, so that the first operator drives the rotating part and the actuator to rotate relative to the probe rod by pushing and pulling the connecting rod.

[0007] Preferably, the probe rod is a hollow member, the first operator is arranged inside the probe rod, and the connecting rod is arranged at the end of the first operator.

[0008] Preferably, the probe rod is a round rod, and the first operator is arranged as a sliding rod whose outer side can fit and slide with the inner side of the probe rod.

[0009] Preferably, the operating part includes a rotating wheel provided with a cam-shaped slideway. The rotating wheel is arranged at one end of the hollow probe rod connected to the rotating part through a bearing. A mating end engaged with the cam-shaped slideway is arranged on the rotating part, so that the rotation of the rotating wheel drives the mating end to slide along the cam-shaped slideway, thereby causing the mating end to swing, and further causing the rotating part to rotate relative to the probe rod along the rotating pin.

[0010] Preferably, the operating part includes a third operator for rotating the rotating wheel, which is arranged inside the straight and hollow probe rod. The third operator is a straight rod connected to the rotating wheel.

[0011] Preferably, the operating part includes a sliding block capable of sliding along the axial length direction of the rotating part and arranged inside the rotating part, and a steel wire rope arranged inside the hollow probe rod. The steel wire rope is connected to a sliding pin for controlling the operation of the actuator through the sliding block, so that the sliding of the sliding block is controlled by tightening or loosening the steel wire rope, and then the sliding of the sliding pin is controlled to control the operation of the actuator.

[0012] Preferably, the actuator includes a first actuator and a second actuator. Clamping holes for installing clamping jaw pins are arranged on both the first actuator and the second actuator. Chute grooves are respectively arranged on the first actuator and the second actuator, so that the sliding of the sliding pin in the chute grooves drives the opening and closing of the first actuator and the second actuator.

[0013] Preferably, the combined end of the first actuator and the second actuator is inserted into the rotating part, and a slideway for the sliding of the sliding pin is arranged on the rotating part.

[0014] Preferably, the surgical instrument includes an operating mechanism for controlling the operating part.

[0015] For the surgical instrument of the present invention, the hinge connection between the rotating part and the probe rod enables the rotating part to drive the actuator to bend at a certain angle when the rotating part is relatively short, reducing the turning radius. This surgical instrument expands the operable range of the surgery and has positive significance for clinical treatment. Description of the Drawings

[0016] Figure 1 is a schematic diagram of the general structure of a surgical instrument according to an embodiment of the present invention;

[0017] Figure 2 is a schematic diagram of the external structure of a surgical instrument according to an embodiment of the present invention;

[0018] Figure 3 is Figure 2 the schematic diagram of the internal structure of the surgical instrument in

[0019] Figure 4 It is a schematic diagram of the external structure of a surgical instrument according to another embodiment of the present invention;

[0020] Figure 5 is Figure 4 a schematic diagram of the internal structure of the surgical instrument in

[0021] Figure 6 a schematic diagram of the specific structure of the first actuator.

[0022] Description of the reference numerals in the drawings

[0023] 1 - probe rod, 2 - first operator, 3 - wire rope, 4 - connecting rod, 5 - rotating part, 6 - first actuator, 7 - second actuator, 8 - sliding pin, 9 - first connecting pin, 10 - second connecting pin, 11 - rotating pin, 12 - sliding block, 13 - jaw pin, 14 - jaw hole, 15 - chute, 17 - actuator, 202 - third operator, 204 - runner, 206 - mating end. Specific embodiments

[0024] The following will describe in detail the specific embodiments of the present invention with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only for the purpose of illustration and explanation of the present invention, and are not intended to limit the present invention.

[0025] On the one hand, the present invention provides a surgical instrument, including an operating part and a probe rod 1, a rotating part 5 and an actuator 17 connected in sequence; the operating part is connected to the rotating part 5, and the operating part is connected to the actuator 17; the operating part is arranged to be able to control the rotating part 5 to drive the actuator 17 to rotate relative to the probe rod 1 and be able to control the actuator 17 to perform an operation, and the rotating part 5 and the probe rod 1 are hinged by a rotating pin 11.

[0026] In the surgical instrument of the present invention, during the operation, the probe rod 1 can bring the rotating part 5 and the actuator 17 into the general position inside the lesion. The rotation of the actuator 17 relative to the probe rod 1 is realized through the rotating pin 11, so as to find the specific part that needs surgery for the operation. Because the rotation action is only realized by the hinge connection of the rotating pin 11, the length of the rotating part 5 determines the rotation radius; when the rotation 5 is made smaller, the rotation radius can be reduced; when the channel for penetrating into the lesion is narrow and the angle between the path of entering the lesion and the probe rod 1 is large, only a surgical instrument with a smaller turning radius can penetrate into the lesion for surgery. In the surgical instrument of the present invention, the hinge connection between the rotating part and the probe rod enables the rotating part to drive the actuator to bend at a certain angle when the rotating part is short, reducing the turning radius; this surgical instrument expands the range of surgical operations and has a positive significance for clinical treatment.

[0027] To achieve the control of the rotating part 5 by the operating part, the present invention provides a method for the operating part to control the rotating part 5, as follows Figure 2 and Figure 3 As shown, preferably, the operating part includes a first operator 2 that can slide along the length direction of the probe 1; the first operator 2 is connected to the rotating part 5 through a connecting rod 4, and both ends of the connecting rod 4 are hinged to the first operator 2 and the rotating part 5 respectively, so that the first operator 2 drives the rotating part 5 and the actuator 17 to rotate relative to the probe 1 by pushing and pulling the connecting rod 4.

[0028] In this solution, the connecting rod 4 and the first operator 2 are hinged through a first connecting pin 9, and the connecting rod 4 and the rotating part 5 are hinged through a second connecting pin 10; this solution utilizes the structure of a crank-slider to achieve reverse control of the rotation of the rotating part 5 by manipulating the first operator 2. The structure used in this solution is simple and can be obtained at a relatively low cost.

[0029] Preferably, as Figure 3 shown, the probe 1 is a hollow part, the first operator 2 is arranged inside the probe 1, and the connecting rod 4 is arranged at the end of the first operator 2. The structure of the present invention is used for surgical instruments, so the range of movement is inside the diseased body. The first operator 2 slides inside the probe 1, so that the diseased body will not be secondarily damaged due to the movement of the first operator 2.

[0030] Preferably, the probe 1 is a round rod, and the first operator 2 is arranged as a sliding rod whose outer side can fit and slide with the inner side of the probe 1. The inner contour of the hollow probe 1 is substantially the same as the outer contour of the first operator 2 to form a slideway for the first operator 2 to slide, making full use of the structural characteristics of the surgical instrument itself, simplifying the structure and manufacturing process, and reducing the manufacturing cost.

[0031] To achieve the control of the rotating part 5 by the operating part, the present invention provides another method for the operating part to control the rotating part 5, as Figure 4 and Figure 5 shown, preferably, the operating part includes a runner 204 provided with a cam-shaped slideway. The runner 204 is arranged at one end of the hollow probe 1 connected to the rotating part 5 through a bearing. A mating end 206 that fits with the cam-shaped slideway is arranged on the rotating part 5, so that the rotation of the runner 204 drives the mating end 206 to slide along the cam-shaped slideway, thereby causing the mating end 206 to swing, and further causing the rotating part 5 to rotate relative to the probe 1 along the rotating pin 11. The cam-shaped slideway enables the mating end 206 to swing up and down strictly according to the changing track of the slideway as the runner 204 rotates, and has high accuracy while realizing the rotation of the rotating part 5.

[0032] Preferably, as Figure 5 shown, the operation part includes a third operator 202 disposed inside the straight and hollow probe rod 1 for rotating the runner 204. The third operator 202 is a straight rod connected to the runner 204. By rotating the third operator 202, the runner 204 can be rotated by the same angle, thereby precisely controlling the rotation angle of the rotating part 5. The transmission is direct and precise, and is easy to control and operate.

[0033] According to the above two ways of controlling the rotating part 5 by the operation part, preferably, as Figure 3 or Figure 5 shown, the operation part includes a sliding block 12 disposed inside the rotating part 5 and capable of sliding along the axial length direction of the rotating part 5, and a steel wire rope 3 disposed inside the hollow probe rod 1. The steel wire rope 3 is connected to a sliding pin 8 for controlling the operation of the actuator 17 through the sliding block 12, so that by tightening or loosening the steel wire rope 3, the sliding of the sliding block 12 is controlled, and further the sliding of the sliding pin 8 is controlled to control the operation of the actuator 17. The axial length direction of the rotating part 5 is the direction in which the actuator 17 is disposed relative to the rotating part 5.

[0034] The steel wire rope 3 is a strip formed by twisting multiple steel wire strands. It has high strength and stiffness, is not easily damaged during the stretching and bending process, has easily available raw materials, low cost, and is easy to achieve mass production. In contrast, a rope body twisted from titanium alloy wires can also be used, but the cost is high. At the same time, the rope made of cotton and linen filaments has low strength and is easy to break during long-term surgical use, resulting in unpredictable consequences.

[0035] Preferably, the actuator 17 includes a first actuator 6 and a second actuator 7. Clamping holes 14 for installing clamping jaw pins 13 are provided on both the first actuator 6 and the second actuator 7. Sliding grooves 15 are respectively provided on the first actuator 6 and the second actuator 7, so that the sliding of the sliding pin 8 in the sliding grooves 15 drives the opening and closing of the first actuator 6 and the second actuator 7.

[0036] The actuator 17 described in this solution is used for clamping objects. When the steel wire rope 3 is loosened, the first actuator 6 and the second actuator 7 will separate due to gravity. When clamping, the steel wire rope 3 is tightened, thereby causing the sliding pin 8 to slide to achieve the closing of the actuator 17. The device is simple, and while reducing costs, it is also easy to achieve the manufacturing accuracy of the device.

[0037] Preferably, the combined ends of the first actuator 6 and the second actuator 7 are inserted into the rotating part 5, and a slideway for the sliding pin 8 to slide is provided on the rotating part 5. The ends of the first actuator 6 and the second actuator 7 are inserted into the interior of the rotating part 5 to achieve the stable operation of the actuator 17, and the slideway provided on the rotating part 5 facilitates the stable sliding of the sliding pin 8 to achieve the stable operation of the actuator 17.

[0038] Preferably, the surgical instrument includes an operating mechanism for manipulating the operating part. In existing surgeries, the control of the actuator is generally achieved by a doctor holding a scalpel. The doctor controls the operating part by controlling the easily handheld operating mechanism, and then controls the actuator 17. In addition, some surgeries require extremely high precision and need to be precisely controlled by a computer. The computer controls the operating part by controlling the operating mechanism, and then controls the actuator 17 to perform the surgery.

[0039] The preferred embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited thereto. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solutions of the present invention. The various specific technical features can be combined in any suitable manner. To avoid unnecessary repetition, the present invention will not separately describe various possible combination methods. However, these simple modifications and combinations should also be regarded as the content disclosed by the present invention and fall within the protection scope of the present invention.

Claims

1. A surgical instrument, characterized in that, It includes an operating part, a probe rod (1), a rotating part (5), and an actuator (17) that are connected in sequence; the operating part is connected to the rotating part (5), and the operating part is connected to the actuator (17); the operating part is configured to be able to control the rotating part (5) to drive the actuator (17) to rotate relative to the probe rod (1) and to be able to control the actuator (17) to perform an operation, and the rotating part (5) is hinged to the probe rod (1) through a rotating pin (11). The operating part includes a runner (204) provided with a cam-shaped slideway, and the runner (204) is arranged at one end of the hollow probe rod (1) connected to the rotating part (5) through a bearing. A mating end (206) that fits with the cam-shaped slideway is provided on the rotating part (5) so that the rotation of the runner (204) drives the mating end (206) to slide along the cam-shaped slideway, thereby causing the mating end (206) to swing, and further causing the rotating part (5) to rotate relative to the probe rod (1) along the rotating pin (11). The operating part includes a third operator (202) provided inside the straight hollow probe rod (1) for rotating the runner (204). The probe rod is a round rod.

2. The surgical instrument according to claim 1, wherein The third operator (202) is a straight rod connected to the runner (204).

3. The surgical instrument according to any one of claims 1-2, characterized in that, The operating part includes a sliding block (12) arranged inside the rotating part (5) and capable of sliding along the axial length direction of the rotating part (5), and a steel wire rope (3) arranged inside the hollow probe rod (1); the steel wire rope (3) is connected to a sliding pin (8) for controlling the operation of the actuator (17) through the sliding block (12), so that by tightening or loosening the steel wire rope (3), the sliding of the sliding block (12) is controlled, and further the sliding of the sliding pin (8) is controlled to control the operation of the actuator (17).

4. The surgical instrument according to claim 3, wherein The actuator (17) includes a first actuator (6) and a second actuator (7). Clamping holes (14) for installing clamping jaw pins (13) are provided on both the first actuator (6) and the second actuator (7). Chute grooves (15) are respectively provided on the first actuator (6) and the second actuator (7) so that the sliding of the sliding pin (8) in the chute grooves (15) drives the opening and closing of the first actuator (6) and the second actuator (7).

5. The surgical instrument according to claim 4, wherein The combined ends of the first actuator (6) and the second actuator (7) are inserted into the rotating part (5), and a slideway for the sliding of the sliding pin (8) is provided on the rotating part (5).

6. The surgical instrument according to claim 5, characterized in that, The surgical instrument includes an operating mechanism for manipulating the operating part.

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