Ultrasonic soft tissue cutting hemostasis tool bit with reusable tool bar

Abstract

The invention discloses an ultrasonic soft tissue cutting hemostasis tool bit with a reusable tool bar, and relates to the technical field of minimally invasive medical instruments, the ultrasonic soft tissue cutting hemostasis tool bit comprises a sheath, a tool handle, a cutting assembly and the tool bar, the sheath comprises an outer tube and the tool handle, a mounting groove is formed in the sheath and used for placing the tool bar and a transducer, and the tool bar is in threaded connection with the transducer; a non-return shaft on the knife rod is matched with a non-return shaft bayonet in the knife sheath, the cutting assembly is used for pressing a pressing block to adjust the inner tube, the extending length of the inner tube is adjusted to meet the requirements of different operation scenes, the outer tube on one side of the knife sheath is movably connected with the knife sheath through a rotary knob, and a clamp mouth is arranged on one side of the outer tube and used for clamping soft tissue. According to the device, through the detachable cutter head assembly, the repeated use of the cutter bar is achieved, the cost of surgical consumables is reduced, the burden of a patient is relieved, and the risk of cross infection is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of minimally invasive medical devices, and particularly to an ultrasonic soft tissue cutting and hemostatic knife head with a reusable knife rod. Background Art

[0002] In modern surgical operations, ultrasonic scalpels use ultrasonic energy to process soft tissues, completing cutting and blood coagulation simultaneously and ensuring minimal lateral thermal damage to tissues. Ultrasonic soft tissue cutting and hemostatic knife heads have been widely used clinically because they can efficiently cut soft tissues and achieve hemostasis functions. However, existing ultrasonic soft tissue cutting and hemostatic knife heads have many deficiencies. Existing ultrasonic scalpels are usually used as disposable surgical instruments because it is difficult to thoroughly clean and disinfect the inside of the knife body. They are expensive and pose a risk of cross-infection. The stability of the knife head structure needs to be improved. During the surgical process, the rotation or displacement of the knife rod may lead to a decrease in cutting accuracy, increasing the risk of damage to surrounding healthy tissues and affecting the surgical effect and the patient's recovery. Therefore, those skilled in the art have provided an ultrasonic soft tissue cutting and hemostatic knife head with a reusable knife rod to solve the problems raised in the above background art. Summary of the Invention

[0003] The purpose of the present invention is to provide an ultrasonic soft tissue cutting and hemostatic knife head with a reusable knife rod to solve the problems raised in the above background art.

[0004] To achieve the above purpose, the present invention provides the following technical solutions: An ultrasonic soft tissue cutting and hemostatic knife head with a reusable knife rod includes a knife sheath, a knife handle, a cutting assembly, and a knife rod. The knife sheath includes an outer tube and a knife handle. The knife handle is provided on one side below the knife sheath. The cutting assembly is provided inside the knife sheath, and an installation groove is opened inside the knife sheath. The knife rod and a transducer are provided in the installation groove. A threaded groove is opened on one side of the transducer, and the transducer is threadedly connected to the knife rod through the threaded groove. A reverse shaft bayonet is provided on one side of the knife sheath close to the transducer, and a reverse shaft is provided on the knife rod. The reverse shaft and the reverse shaft bayonet cooperate with each other. An inner tube is provided on the side of the knife rod away from the transducer, and the cutting assembly is used to adjust the inner tube.

[0005] As a further solution of the present invention: The cutting assembly includes a pressing block, a rotating shaft, a transmission rod, a compression spring, a sliding block, a connecting piece, a gasket, a corrugated spring, and a mounting piece. A rotating shaft is provided on one side inside the knife sheath. The knife sheath is movably connected to the pressing block through the rotating shaft. One side of the pressing block is movably connected to the transmission rod. The sliding block is slidably connected in the installation groove. The sliding block is movably connected to the transmission rod. A compression spring is provided between the sliding block and the knife sheath on the installation groove. A mounting piece is provided on the upper side of the sliding block. A gasket is sleeved on one side of the mounting piece. A connecting piece is provided on the side of the mounting piece away from the sliding block. A corrugated spring is provided between the connecting piece and the gasket.

[0006] As a further solution of the present invention: An outer tube is movably connected to one side of the scabbard. A knob is provided between the outer tube and the scabbard, and a pair of forceps jaws is provided on one side of the outer tube.

[0007] As a further solution of the present invention: The scabbard is made of medical-grade disposable plastic, and the blade rod is made of corrosion-resistant high-strength alloy material.

[0008] As a further solution of the present invention: The surface of the handle is provided with anti-slip lines and finger grooves that conform to ergonomics, and a stress sensor is built into the handle; The stress sensor is used to monitor the force exerted on the blade tip during the operation in real time.

[0009] Compared with the prior art, the beneficial effects of the present invention are: 1. When the doctor operates and presses the pressing block, the pressing block rotates around the rotating shaft. Since the pressing block is movably connected to the transmission rod, the rotation of the pressing block drives the transmission rod to move. The transmission rod then pushes the sliding block to slide in the installation groove. During this process, the compression spring between the sliding block and the scabbard is squeezed, storing elastic potential energy. The anti-reverse shaft enters the anti-reverse shaft bayonet and cooperates with the connecting piece, effectively preventing the blade rod from rotating or displacing during the cutting process, ensuring the stability of the blade tip during the operation, helping the doctor to perform precise cutting operations, reducing the risk of damage to surrounding healthy tissues caused by the shaking of the blade tip, improving the safety of the operation. The sliding of the sliding block transmits the movement to the inner tube through the connecting piece, realizing the adjustment of the inner tube, adjusting the extended length of the inner tube to meet the requirements of different surgical scenarios. When the doctor releases the pressing block, the compression spring releases the elastic potential energy, pushing the sliding block to reset and driving the entire cutting assembly back to the initial state; 2. The outer tube on one side of the scabbard is movably connected to the scabbard through a knob. When the doctor rotates the knob, the outer tube can be adjusted in angle around the connection point with the scabbard, and the forceps jaws on one side of the outer tube change positions accordingly, used to clamp and fix the soft tissue at the surgical site, keeping the tissue stable during cutting. During the cutting process, the forceps jaws assist in positioning the blade tip, enabling the inner tube to more accurately contact the tissue to be cut; 3. The scabbard is made of medical-grade disposable plastic, which has a low cost, meets the requirements of disposable use, and can effectively avoid cross-infection. The blade rod is made of corrosion-resistant high-strength alloy material, ensuring that the blade rod will not affect its performance due to corrosion or wear during multiple uses, cleaning, and disinfection processes, always maintaining good mechanical strength and stability, and ensuring the normal use of the blade tip. The surface of the handle is designed with anti-slip lines and finger grooves that conform to ergonomics, facilitating the doctor's grip; 4. The handle is internally equipped with a stress sensor. During the operation, the stress sensor monitors the force exerted on the blade tip in real time and transmits the data to the supporting device. The doctor can adjust the operation force and method in a timely manner according to the feedback data to achieve more refined surgical operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic structural diagram of an ultrasonic soft tissue cutting and hemostasis blade tip with a reusable shank.

[0011] Figure 2 It is a top view of the handle in an ultrasonic soft tissue cutting and hemostasis blade tip with a reusable shank.

[0012] Figure 3 It is Figure 2 The schematic cross-sectional structure diagram in the A-A direction of

[0013] Figure 4 It is a three-dimensional structural diagram of the cutting mechanism in an ultrasonic soft tissue cutting and hemostasis blade tip with a reusable shank.

[0014] Figure 5 It is an exploded view of the sliding block in the cutting mechanism of an ultrasonic soft tissue cutting and hemostasis blade tip with a reusable shank.

[0015] Figure 6 It is an exploded view of the blade sheath and the shank in an ultrasonic soft tissue cutting and hemostasis blade tip with a reusable shank.

[0016] In the figure: 1. Blade sheath; 2. Handle; 3. Cutting assembly; 301. Pressing block; 302. Rotating shaft; 303. Transmission rod; 304. Compression spring; 305. Sliding block; 306. Connecting piece; 307. Gasket; 308. Corrugated spring; 309. Mounting piece; 4. Knob; 5. Outer tube; 6. Forceps mouth; 7. Transducer; 8. Inner tube; 9. Anti-reverse shaft; 10. Mounting groove; 11. Shank; 12. Anti-reverse shaft bayonet. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0018] Embodiment 1 Referring to Figures 1-6, this embodiment provides an ultrasonic soft tissue cutting and hemostatic knife head with a reusable tool shank, which includes a tool sheath 1, a tool handle 2, a cutting assembly 3, and a tool shank 11. The tool sheath 1 includes an outer tube 5 and a tool handle 2. The tool handle 2 is provided on one lower side of the tool sheath 1. The cutting assembly 3 is provided inside the tool sheath 1, and an installation groove 10 is formed inside the tool sheath 1. The tool shank 11 and a transducer 7 are arranged in the installation groove 10. A threaded groove is formed on one side of the transducer 7. The transducer 7 is threadedly connected to the tool shank 11 through the threaded groove. A reverse shaft bayonet 12 is provided on one side of the tool sheath 1 close to the transducer 7. A reverse shaft 9 is provided on the tool shank 11. The reverse shaft 9 and the reverse shaft bayonet 12 cooperate with each other. An inner tube 8 is provided on the side of the tool shank 11 away from the transducer 7, and the cutting assembly 3 is used to adjust the inner tube 8; In this embodiment, specifically, the cutting assembly 3 includes a pressing block 301, a rotating shaft 302, a transmission rod 303, a compression spring 304, a sliding block 305, a connecting piece 306, a gasket 307, a corrugated spring 308, and a mounting piece 309. The rotating shaft 302 is provided on one side inside the tool sheath 1. The tool sheath 1 is movably connected to the pressing block 301 through the rotating shaft 302. One side of the pressing block 301 is movably connected to the transmission rod 303. The sliding block 305 is slidably connected in the installation groove 10. The sliding block 305 is movably connected to the transmission rod 303. A compression spring 304 is provided between the sliding block 305 and the tool sheath 1 on the installation groove 10. The mounting piece 309 is provided on the upper side of the sliding block 305. A gasket 307 is sleeved on one side of the mounting piece 309. A connecting piece 306 is provided on the side of the mounting piece 309 away from the sliding block 305. A corrugated spring 308 is provided between the connecting piece 306 and the gasket 307; When the doctor operates and presses the pressing block 301, the pressing block 301 rotates around the rotating shaft 302. Since the pressing block 301 is movably connected to the transmission rod 303, the rotation of the pressing block 301 will drive the transmission rod 303 to move. The transmission rod 303 then pushes the sliding block 305 to slide in the installation groove 10. During this process, the compression spring 304 between the sliding block 305 and the tool sheath 1 is squeezed to store elastic potential energy. The reverse shaft 9 enters the reverse shaft bayonet 12 to cooperate with the connecting piece 306, effectively preventing the tool shank 11 from rotating or displacing during the cutting process, ensuring the stability of the knife head during the operation, helping the doctor to perform precise cutting operations, reducing the risk of damage to the surrounding healthy tissues caused by the shaking of the knife head, and improving the safety of the operation. A corrugated spring 308 is provided between the connecting piece 306 and the gasket 307. The corrugated spring 308 has good elasticity and plays a role of buffering and adaptive adjustment during the movement transmission process. The sliding of the sliding block 305 transmits the movement through the connecting piece 306 and acts on the inner tube 8, realizing the adjustment of the inner tube 8, adjusting the extended length of the inner tube 8 to meet the requirements of different surgical scenarios. When the doctor releases the pressing block 301, the compression spring 304 releases the elastic potential energy, pushes the sliding block 305 to reset, and drives the entire cutting assembly back to the initial state.

[0019] Example 2 Reference Figures 1-4 And Figure 6 This example is based on the previous example. The difference from the previous example is that an outer tube 5 is movably connected to one side of the sheath 1. A knob 4 is provided between the outer tube 5 and the sheath 1, and a pair of forceps jaws 6 are provided on one side of the outer tube 5; The sheath 1 is made of medical-grade disposable plastic, and the blade rod 11 is made of corrosion-resistant high-strength alloy material; The surface of the handle 2 is provided with anti-slip patterns and finger grooves that conform to ergonomics, and a stress sensor is built into the handle 2; The stress sensor is used to monitor the force exerted on the blade tip during the operation in real time; The outer tube 5 on one side of the sheath 1 is movably connected to the sheath 1 through the knob 4. When the doctor rotates the knob 4, the outer tube 5 can adjust the angle around the connection point with the sheath 1, and the pair of forceps jaws 6 on one side of the outer tube 5 will change positions accordingly, which is used to clamp and fix the soft tissue at the surgical site to keep the tissue stable during cutting. During the cutting process, the pair of forceps jaws 6 assist in positioning the blade tip, enabling the inner tube 8 to more accurately contact the tissue to be cut. The sheath 1 is made of medical-grade disposable plastic, which has a low cost and meets the requirements of single-use, and can effectively avoid cross-infection. The blade rod 11 is made of corrosion-resistant high-strength alloy material, ensuring that the blade rod 11 will not be affected by corrosion or wear during multiple uses, cleaning, and disinfection, and always maintaining good mechanical strength and stability to ensure the normal use of the blade tip. The surface of the handle 2 is designed with anti-slip patterns and finger grooves that conform to ergonomics, which is convenient for the doctor to hold. A stress sensor is built into the handle 2. During the operation, the stress sensor monitors the force exerted on the blade tip in real time and transmits the data to the supporting equipment. The doctor can adjust the operation force and method in a timely manner according to the feedback data to achieve more refined surgical operations.

[0020] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended to encompass all changes within the meaning and scope of the equivalent elements of the claims in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0021] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment contains only an independent technical solution. This narrative style of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An ultrasonic soft tissue cutting and hemostatic knife head with a reusable tool shank, characterized in that, It includes a scabbard (1), a handle (2), a cutting assembly (3) and a blade bar (11). The scabbard (1) includes an outer tube (5) and a handle (2). The handle (2) is provided on the lower side of the scabbard (1). The cutting assembly (3) is provided inside the scabbard (1). An installation groove (10) is formed inside the scabbard (1). The blade bar (11) and a transducer (7) are arranged in the installation groove (10). A threaded groove is formed on one side of the transducer (7). The transducer (7) is threadedly connected to the blade bar (11) through the threaded groove. A reverse shaft bayonet (12) is provided on the side of the scabbard (1) close to the transducer (7). A reverse shaft (9) is provided on the blade bar (11). The reverse shaft (9) cooperates with the reverse shaft bayonet (12). An inner tube (8) is provided on the side of the blade bar (11) away from the transducer (7). And the cutting assembly (3) is used to adjust the inner tube (8).

2. The ultrasonic soft tissue cutting and hemostatic knife head of a reusable tool shank according to claim 1, wherein, The cutting assembly (3) includes a pressure block (301), a rotating shaft (302), a transmission rod (303), a compression spring (304), a sliding block (305), a connecting piece (306), a gasket (307), a corrugated spring (308) and a mounting piece (309). The rotating shaft (302) is provided on one side inside the scabbard (1). The pressure block (301) is movably connected to the scabbard (1) through the rotating shaft (302). And a transmission rod (303) is movably connected to one side of the pressure block (301). The sliding block (305) is slidably connected in the installation groove (10). The transmission rod (303) is movably connected to the sliding block (305). And a compression spring (304) is provided between the sliding block (305) and the scabbard (1) in the installation groove (10). A mounting piece (309) is provided on the upper side of the sliding block (305). A gasket (307) is sleeved on one side of the mounting piece (309). And a connecting piece (306) is provided on the side of the mounting piece (309) away from the sliding block (305). A corrugated spring (308) is provided between the connecting piece (306) and the gasket (307).

3. The ultrasonic soft tissue cutting and hemostatic knife head of a reusable tool shank according to claim 2, wherein, The outer tube (5) is movably connected to one side of the scabbard (1). A knob (4) is provided between the outer tube (5) and the scabbard (1). And a pair of forceps jaws (6) is provided on one side of the outer tube (5).

4. The ultrasonic soft tissue cutting and hemostatic knife head of a reusable tool shank according to claim 3, wherein, The scabbard (1) is made of medical-grade disposable plastic, and the blade bar (11) is made of corrosion-resistant high-strength alloy material.

5. The ultrasonic soft tissue cutting and hemostatic knife head of a reusable tool shank according to claim 4, characterized in that, The surface of the handle (2) is provided with anti-slip patterns and finger grooves that conform to ergonomics, and a stress sensor is built inside the handle (2); The stress sensor is used to monitor the force exerted on the blade head during the operation in real time.

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