Surgical instrument

Abstract

The application relates to a surgical instrument, which comprises a handle, a motor, a control assembly and a cutter. The handle comprises a butt joint part formed with a liquid return cavity and a holding part connected with the butt joint part. The motor is arranged in the holding part. The control assembly realizes the operation of the motor through the transmission of a control signal. The cutter comprises an interface assembly butted with the butt joint part, an outer tube arranged on the interface assembly and an inner tube arranged in the outer tube. The inner tube is connected with the motor through the interface assembly. A through hole for connecting the inner tube and the liquid return cavity is arranged on the interface assembly. The internal liquid of a human body is sucked into the through hole along the inner tube and is further sucked into the liquid return cavity through the through hole. A water outlet is further arranged on the butt joint part and is communicated with the liquid return cavity. The internal liquid of the human body is sucked out of the butt joint part through the water outlet. The surgical instrument can isolate the handle and the waterway while discharging the internal liquid of the human body, reduces the use risk and is convenient and fast.

Description

Technical Field

[0001] This invention relates to a surgical instrument, belonging to the field of medical device technology. Background Technology

[0002] As is well known, the main function of a planing device is to process bone, cartilage tissue, and even spurs by planing, cutting, trimming, and grinding, in preparation for subsequent surgery.

[0003] In existing technology, a planing device includes a cutting tool and a handle connected to the tool, the handle having a gripping part for the surgeon to hold. The cutting tool has a cavity within it, allowing for the aspiration of cleaning fluid (physiological saline) and planed tissue residue from the surgical site via an external suction device, which is then discharged through the handle. Therefore, a water outlet channel is provided within the handle. However, when the cutting tool becomes electrified (or the patient becomes electrified), the cleaning fluid becomes conductive, causing the handle to become electrified, potentially leading to electric shock to the surgeon and increasing the operational risk. Summary of the Invention

[0004] The purpose of this invention is to provide a surgical instrument that can drain internal fluids from the body while isolating the handle from the water path, reducing the risk of electric shock during use, and providing convenience and speed.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a surgical instrument, comprising:

[0006] The handle includes a docking portion having a liquid reflux cavity and a gripping portion connected to the docking portion;

[0007] The motor is located inside the grip portion;

[0008] The control component enables the motor to operate by transmitting control signals;

[0009] The cutting tool includes an interface assembly that docks with the docking part, an outer tube mounted on the interface assembly, and an inner tube mounted inside the outer tube. The inner tube is connected to the motor through the interface assembly.

[0010] The interface component has a through hole for connecting the inner tube and the liquid return chamber. The liquid inside the human body is drawn into the through hole along the inner tube and then into the liquid return chamber through the through hole.

[0011] The docking part is also provided with a water outlet that is connected to the liquid return chamber, through which the liquid inside the human body is drawn out of the docking part.

[0012] Furthermore, in the height direction of the surgical instrument, the water outlet is located below the liquid return chamber.

[0013] Furthermore, the surgical instrument also includes a suction assembly connected to the outlet, the suction assembly being used to generate negative pressure to draw internal body fluids to the outside of the handle.

[0014] Furthermore, the suction assembly includes a water outlet pipe connected to the water outlet and a negative pressure suction device connected to the water outlet pipe for generating negative pressure.

[0015] Furthermore, the suction assembly also includes a pipeline control valve disposed on the water outlet pipeline to control the opening and closing of the water outlet pipeline.

[0016] Furthermore, the water outlet pipe is made of insulating material.

[0017] Furthermore, an insulating element is provided on the inner wall of the liquid reflux chamber.

[0018] Furthermore, the motor has an output shaft, and the surgical instrument further includes a chuck connected to the output shaft, with the interface assembly plugged into the chuck.

[0019] Furthermore, the interface assembly includes a connector connected to the handle and a plug detachably connected to the connector, the outer tube being connected to the connector and the inner tube being connected to the plug.

[0020] Furthermore, the handle is provided with a groove, and the mating head is provided with a retaining member that engages with the groove.

[0021] The beneficial effects of the present invention are as follows: a liquid return chamber is provided in the docking part, and an outlet communicating with the liquid return chamber is provided directly on the docking part, so that the liquid inside the human body is directly drawn out to the outside of the handle through the outlet, without passing through the gripping part, so that the gripping part is electrically isolated from the docking part and the cutting tool, reducing the risk of electric shock to the surgeon, and making it convenient and quick.

[0022] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, the preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0023] Figure 1 This is a cross-sectional view of the overall structure of the surgical instrument of the present invention.

[0024] Figure 2 for Figure 1 A partial schematic diagram. Detailed Implementation

[0025] The technical solutions of this application will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0026] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. Furthermore, the technical features involved in the different embodiments of this application described below can be combined with each other as long as they do not conflict with each other.

[0028] Please see Figure 1 In a preferred embodiment of the present invention, the surgical instrument 100 is a planer used for planing, cutting, trimming, and grinding bone, cartilage tissue, and even burrs inside the human body. Of course, in other embodiments, the surgical instrument 100 can be other instruments, such as a bone saw, bone hammer, or curette. In practice, different functional working heads can be replaced according to different needs, and no specific limitations are made here.

[0029] Specifically, the surgical instrument 100 includes a handle 1, a motor 2 disposed within the handle 1, a control component 3 for driving the motor 2, and a cutting tool 4 connected to the handle 1 and used to perform a working task; the cutting tool 4 is the aforementioned working head. Activating the control component 3 causes the motor 2 to operate, thereby driving the cutting tool 4 to perform a cutting action. The control component 3 receives control signals and, based on these signals, enables the operation of the motor 2. Therefore, a control panel (not shown) for sending control signals may also be disposed within the handle 1, and the control component 3 is electrically connected to the control panel. In other embodiments, the control component 3 can control the operation of the motor 2 while simultaneously enabling the operation of other components; these other components are determined according to actual conditions and are not specifically limited here. In this embodiment, the control component 3 is a switch electrically connected to the motor 2; the switch 3 can be a push-button switch or a push-button switch; indeed, in other embodiments, the switch 3 can also be a switch encapsulated with a long-leg plug, etc.

[0030] The handle 1 is made of metal, such as stainless steel, and the specific material is not limited here, but depends on the actual situation. The handle 1 includes a gripping part 11 and a docking part 12 connected to the gripping part 11. With the direction where the cutter 4 is located as the front, the docking part 12 extends forward from the gripping part 11, that is, the docking part 12 is located at the front end of the gripping part 11. A receiving cavity 111 is formed in the gripping part 11, and the motor 2 is fixedly housed in the receiving cavity 111. The motor 2 can be fixed by fastener connection, threaded connection, adhesive, etc., and the specific method is not limited here, but depends on the actual situation. The docking part 12 is provided with a receiving cavity 121 for accommodating part of the cutter 4 and a liquid return cavity 123 provided on one side of the receiving cavity 121. At least part of the cutter 4 extends into the liquid return cavity 123 and docks with the motor 2. It is worth noting that when the motor 2 is installed in the accommodating cavity 111, a sealing element (unlabeled) is also provided around the motor 2 so that the accommodating cavity 111 is not connected to the liquid return cavity 123.

[0031] The motor 2 has an output shaft 21, and the surgical instrument 100 also includes a chuck 22 mounted on the output shaft 21, which clamps the rear end of the cutting tool 4. The chuck 22 has a receiving cavity (not labeled), in which an elastic element 23 is disposed. One end of the elastic element 23 is mounted on the output shaft 21, and a retaining member 24 is mounted on the other end. In this embodiment, the elastic element 23 is a compression spring. The purpose of providing the compression spring 23 is that when the cutting tool 4 is inserted into the chuck 22, the retaining member 24 abuts against the rear end of the cutting tool 4 and moves toward the gripping part 11 under the action of external force, thereby compressing the compression spring 23; when the cutting tool 4 is disassembled from the handle 1, the external force applied to the compression spring 23 is removed, and the compression spring 23 pushes the retaining member 24 away from the gripping part 11 under its own elastic force, so as to push the cutting tool 4 away from the gripping part 11, thereby enabling the cutting tool 4 to be quickly disassembled from the handle 1.

[0032] In this embodiment, the blade 4 is detachably connected to the handle 1, facilitating cleaning and disinfection of the blade 4 and the liquid reflux chamber 123 by medical personnel. The blade 4 and handle 1 are detachable by a snap-fit ​​mechanism. Specifically, the handle 1 is provided with a slot 124, and the blade 4 is provided with a retaining member 413 that engages with the slot 124. The slot 124 is located on the mating portion 12 and communicates with the receiving cavity 121.

[0033] The cutting tool 4 includes an interface assembly 41 mounted on the handle 1, an outer tube 43 mounted on the interface assembly 41, and an inner tube 42 mounted inside the outer tube 43. The interface assembly 41 includes a plug 411 that inserts into the chuck 22 and a connector 412 that connects to the handle 1. In this embodiment, the plug 411 and connector 412 are detachably connected, as described above, and will not be repeated here. When the cutting tool 4 is connected to the handle 1, the plug 411 inserts into the chuck 22, and simultaneously, the retaining member 413 engages with the slot 124 to fix the connector 412 within the receiving cavity 121.

[0034] As described above, the retaining member 413 is disposed on the mating connector 412. The retaining member 413 and the mating connector 412 can be integrally formed or separately, without specific limitation, depending on the actual situation. To simplify the manufacturing process, in this embodiment, the retaining member 413 and the mating connector 412 are integrally formed. Meanwhile, the retaining member 413 can be made of plastic or similar materials, which can undergo slight deformation under external force, allowing the retaining member 413 to slide along the receiving cavity 121 and engage with the slot 124. Specifically, the mating connector 412 includes a mating member (unlabeled) and a mating shell (unlabeled) sleeved on the mating member. The rear end of the outer tube 43 is fixedly inserted into the front end of the mating member, and the front end of the plug connector 411 is inserted into the rear end of the mating member. The plug connector 411 and the mating member are detachably plugged in and unplugged. The retaining member 413 is disposed on the mating shell.

[0035] In this embodiment, the rear end of the inner tube 42 is fixedly inserted into the connector 411, and the front end of the inner tube 42 extends into the outer tube 43. A gap 45 exists between the outer tube 43 and the inner tube 42 to facilitate movement of the inner tube 42 within the outer tube 43. Simultaneously, to allow the inner tube 42 to move more smoothly within the outer tube 43 for planing operations, the outer tube 43 and the inner tube 42 are arranged parallel and coaxially. The front ends of the outer tube 43 and the inner tube 42 are blade heads 44. In this embodiment, the blade head 44 is toothed, with a serrated oblique cut, allowing the blade head 44 to more sharply plan and grind bone. Admittedly, in other embodiments, the blade head 44 may have other shapes, such as simply an oblique cut; no specific limitation is made here, as long as the above objectives are achieved.

[0036] Please combine Figure 2 When the blade head 44 is used to plan or grind human organs, a cleaning solution is used to clean the area. To facilitate the delivery of this cleaning solution from inside the body to the outside, a through hole 46 is provided on the interface assembly 41 to connect the inner tube 42 and the liquid return chamber 123. As described above, the rear end of the inner tube 42 is inserted into and fixed within the connector 411, hence the through hole 46 is located on the connector 411. When the blade is electrified (or the patient is electrified), the cleaning solution becomes conductive. To prevent electric shock to the surgeon using the surgical instrument 100, an insulating element 125 is provided on the inner wall of the liquid return chamber 123. Additionally, an outlet 112 communicating with the liquid return chamber 123 is provided on the docking part 12. The purpose of this arrangement is that the insulating element 125 insulates the liquid return chamber 123 from the handle 1, allowing the liquid inside the body to be directly drawn out through the docking part 12 without passing through the grip part 11, thereby reducing or even eliminating the risk of electric shock to the surgeon.

[0037] In this embodiment, the outlet 112 is located below the liquid return chamber 123 in the height direction of the surgical instrument 100, allowing the liquid to be smoothly drawn out of the docking part 12 under its own weight. To further facilitate the smooth drawing of liquid out of the docking part 12, the surgical instrument 100 also includes a suction assembly (not labeled) connected to the outlet 112. As described above, the suction assembly can also be electrically connected to the control assembly 3, that is, the control assembly 3 can control the opening and closing of the suction assembly. The suction assembly is used to generate negative pressure, thereby creating a pressure difference between the inside of the human body and the liquid return chamber 123. Under the action of the pressure difference, the liquid is drawn along the inner tube 42 into the through hole 46, and then drawn into the liquid return chamber 123 through the through hole 46. Then, the suction assembly draws the liquid in the liquid return chamber 123 out of the docking part 12 through the outlet 112.

[0038] To prevent liquid from adhering to the outer periphery of the docking part 12 when it is aspirated, thus preventing the handle 1 from becoming conductive, the suction assembly includes a water outlet pipe 113 connected to the water outlet 112 and a negative pressure suction device (not shown) connected to the water outlet pipe 113 to generate negative pressure. This negative pressure suction device has a conventional structure, such as a pressure regulator or suction pump, and is not specifically limited here. The water outlet pipe 113 is made of insulating material, such as insulating plastic, to achieve insulation and further ensure that the surgeon avoids the risk of electric shock. The suction assembly also includes a pipe control valve (not shown) installed on the water outlet pipe 113. The opening and closing of the pipe control valve controls the on / off state of the water outlet pipe 113, thereby opening the water outlet pipe 113 as needed. The pipeline control valve can be a mechanical valve or an electronic valve. When it is a mechanical valve, it can be manually shut off. When it is an electronic valve, it can be electrically connected to the control component 3, thereby enabling the control component 3 to control the opening and closing of the electronic valve, which is convenient and quick.

[0039] In summary: A liquid return chamber 123 is provided inside the docking part 12, and an outlet 112 communicating with the liquid return chamber 123 is directly provided on the docking part 12, so that the liquid inside the human body can be directly drawn out of the handle 1 through the outlet 112 without passing through the grip part 11, so that the grip part 11 is electrically isolated from the docking part 12 and the blade 4, reducing the risk of electric shock to the surgeon and making the procedure convenient and quick.

[0040] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0041] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A surgical instrument, characterized in that, include: The handle includes a docking portion having a liquid reflux cavity and a gripping portion connected to the docking portion. An insulating member is provided on the inner wall of the liquid reflux cavity to insulate the liquid reflux cavity from the handle. A receiving cavity is provided in the gripping portion. The motor is disposed in the receiving cavity inside the gripping part, and a sealing element is provided around the motor to isolate the receiving cavity from the liquid return cavity; The control component enables the motor to operate by transmitting control signals; The cutting tool includes an interface assembly that docks with the docking part, an outer tube mounted on the interface assembly, and an inner tube mounted inside the outer tube. The inner tube is connected to the motor through the interface assembly. The interface component has a through hole for connecting the inner tube and the liquid return chamber. The liquid inside the human body is drawn into the through hole along the inner tube and then into the liquid return chamber through the through hole. The docking part is also provided with a water outlet that communicates with the liquid reflux chamber. The water outlet is located below the liquid reflux chamber in the height direction of the surgical instrument. The liquid reflux path formed by the liquid reflux chamber and the water outlet is located inside the docking part and does not pass through the grip part. The internal fluid of the human body is drawn out of the docking part through the water outlet. The water outlet is connected to a water outlet pipe, and the water outlet pipe is made of insulating material.

2. The surgical instrument as described in claim 1, characterized in that, The surgical instrument also includes a suction assembly connected to the outlet, which generates negative pressure to draw internal body fluids to the outside of the handle.

3. The surgical instrument as described in claim 2, characterized in that, The suction assembly includes a negative pressure suction device connected to the water outlet pipe and used to generate negative pressure.

4. The surgical instrument as described in claim 3, characterized in that, The suction assembly also includes a pipeline control valve disposed on the outlet pipeline to control the opening and closing of the outlet pipeline.

5. The surgical instrument as described in claim 1, characterized in that, The motor has an output shaft, and the surgical instrument further includes a chuck connected to the output shaft, with the interface assembly plugged into the chuck.

6. The surgical instrument as described in claim 5, characterized in that, The interface assembly includes a connector connected to the handle and a plug detachably connected to the connector. The outer tube is connected to the connector, and the inner tube is connected to the plug.

7. The surgical instrument as described in claim 6, characterized in that, The handle is provided with a groove, and the mating head is provided with a retaining member that engages with the groove.

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