An ultrasonic scalpel with irrigation and suction functions

Abstract

The application belongs to the technical field of medical devices, and particularly relates to an ultrasonic knife with flushing and suction functions. The ultrasonic knife comprises a knife body, a handle connected to the rear end of the knife body, a flushing and suction mechanism installed on the outer wall of the front end of the knife body, an outer shell body, an annular flushing cavity and an annular suction cavity arranged in the shell body from inside to outside, a plurality of flushing pipes fixedly connected to the front end of the flushing cavity in a circumferential direction, a liquid inlet hose connected to the rear end of the flushing cavity, a plurality of suction pipes fixedly connected to the front end of the suction cavity in a circumferential direction, a liquid outlet hose connected to the rear end of the suction cavity, a fixing sleeve fixedly connected to the rear end of the shell body, and a locking mechanism installed on the fixing sleeve and used for relatively fixing the shell body and the knife body. The ultrasonic knife can achieve multi-directional and uniform flushing and suction effects, and greatly improve the definition of the surgical field.

Description

Technical Field

[0001] This invention belongs to the field of medical device technology, specifically relating to an ultrasonic scalpel with rinsing and suction functions. Background Technology

[0002] As a novel surgical instrument, the ultrasonic scalpel has been widely used in laparoscopic surgery and various open surgeries due to its excellent tissue cutting and coagulation capabilities. During the use of the ultrasonic scalpel, smoke, tissue debris, and blood often accumulate in the surgical area. These substances can obstruct the surgical field, affecting the precision and safety of the procedure. Therefore, ultrasonic scalpel surgery typically requires the use of irrigation and suction functions to maintain a clear surgical field.

[0003] Currently, some ultrasonic scalpel products have integrated irrigation and suction functions, but most of them are single-point irrigation and single-point suction structures, which cannot achieve multi-directional and uniform irrigation and suction effects. Moreover, the relative positions of the irrigation and suction tubes and the scalpel head of existing scalpels are mostly fixed. In order to ensure that the irrigation and suction tubes do not interfere with the operation of the scalpel head, the front end of the irrigation and suction tubes is often behind the scalpel head by a certain distance, resulting in a large distance between the tip of the irrigation and suction tubes and the affected area, thus affecting the irrigation and suction effect.

[0004] Therefore, there is an urgent need to design an ultrasonic scalpel with flushing and suction functions. Summary of the Invention

[0005] To address the problems existing in the prior art, this invention provides an ultrasonic scalpel with flushing and suction functions, and specifically discloses the following technical solutions: An ultrasonic scalpel with flushing and suction functions includes a scalpel body, a handle connected to the rear end of the scalpel body, and a flushing and suction mechanism installed on the outer wall of the front end of the scalpel body. The flushing and suction mechanism includes an outer shell, which is slidably fitted onto the scalpel body. An annular flushing chamber and an annular suction chamber are sequentially arranged from the inside to the outside of the outer shell body. The flushing chamber and the suction chamber are coaxially arranged. A plurality of flushing tubes are fixedly connected to the front end of the flushing chamber along its circumference, and a liquid inlet hose is connected to the rear end of the flushing chamber. A plurality of suction tubes are fixedly connected to the front end of the suction chamber along its circumference, and a liquid outlet hose is connected to the rear end of the suction chamber. A fixing sleeve is fixedly connected to the rear end of the outer shell body, and a locking mechanism is installed on the fixing sleeve. The locking mechanism is used to relatively fix the outer shell body and the scalpel body.

[0006] Furthermore, the tip of the suction tube extends beyond the tip of the flushing tube.

[0007] Furthermore, the upper and lower ends of the blade body are respectively fixedly connected with guide blocks extending along the blade body axis, and limit grooves are formed on the inner sidewalls of the outer shell and the fixed sleeve at the positions corresponding to the guide blocks, and the guide blocks slide in cooperation with the limit grooves.

[0008] Furthermore, there are two locking mechanisms, each mounted on the fixed sleeve at a position corresponding to the guide block. Each locking mechanism includes a hinge seat fixedly connected to the outer wall of the fixed sleeve. A lever is hinged to the hinge seat, and a strip-shaped hole extending along the length of the lever is formed at the front end of the lever. A receiving groove is formed on the inner front wall of the fixed sleeve, and a reset cavity is formed inside the fixed sleeve outside the receiving groove. A mounting hole is formed radially at the front of the fixed sleeve. A mounting hole passes through the reset cavity and the storage groove in sequence. A pressure rod is slidably installed in the mounting hole. One inner end of the pressure rod extends into the storage groove and is fixedly connected to a pressure plate. One outer end of the pressure rod is fixedly connected to a fixing shaft. The fixing shaft is slidably installed in the strip hole. A support plate is fixedly connected to the part of the pressure rod located in the reset cavity. A spring is sleeved on the pressure rod. The spring is located between the outer inner wall of the reset cavity and the outer surface of the support plate. The surface of the pressure plate away from the pressure rod is in close contact with the surface of the guide block.

[0009] Furthermore, a first toothed rack is provided on the surface of the pressure plate away from the pressure rod, and a second toothed rack is fixedly connected to the surface of the guide block, with the first toothed rack engaging with the second toothed rack.

[0010] Furthermore, annular blocks are fixedly connected to the front and rear ends of the guide block on the blade body.

[0011] Furthermore, the distance between the rear end face of the annular stop at the front end of the blade and the tip of the blade is less than the length of the suction tube.

[0012] Furthermore, a receiving groove is provided on the front end face of the outer shell, the receiving groove being used to receive the annular stop block located at the front end of the blade body.

[0013] Furthermore, the blade body is fitted with several hose fixing sleeves, and hose fixing grooves are respectively opened on both sides of the hose fixing sleeves. The opening width of the hose fixing groove is smaller than the diameter of the liquid inlet hose and the liquid outlet hose, and the liquid inlet hose and the liquid outlet hose are respectively snapped into the corresponding hose fixing groove.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: By coaxially arranging annular irrigation chambers and annular suction chambers sequentially from the inside to the outside of the outer casing, and by fixing several irrigation tubes and suction tubes circumferentially connected to the front ends of the irrigation and suction chambers respectively, this invention breaks through the structural limitations of traditional single-point irrigation and suction. Multiple circumferentially evenly distributed irrigation tubes can simultaneously spray irrigation fluid into the surgical area from different angles, forming a three-dimensional, annular irrigation flow field that effectively covers the area around the surgical tip. Simultaneously, the multiple circumferentially arranged suction tubes can simultaneously aspirate from multiple directions, efficiently removing surgical smoke, tissue debris, and blood. Compared to a single-point structure, this annular multi-porous layout significantly improves the uniformity and coverage of irrigation and suction, avoids irrigation dead zones, and keeps the surgical field continuously clear, thereby improving the precision and safety of surgical operations.

[0015] The flushing chamber and suction chamber are designed as a coaxial annular structure, with the flushing chamber located on the inner side and the suction chamber on the outer side, achieving physical isolation between the flushing fluid delivery path and the suction return path. This compact and independent layered flow channel design effectively prevents the flushing fluid from being directly sucked into the suction chamber before use, thus avoiding waste, and also avoids the negative pressure generated during the suction process from adversely affecting the flushing flow rate and spray direction, ensuring that the flushing and suction functions can operate simultaneously, stably, and efficiently.

[0016] The outer shell slides onto the blade and is fixed to the blade via a locking mechanism on the fixed sleeve. The surgeon can freely adjust the extension positions of the irrigation and suction tubes relative to the blade tip along the blade's axis according to actual surgical needs (such as different tissue types, operating depth, or blade tip extension length). When powerful irrigation and suction are required, the outer shell can be pushed forward to bring the tube openings closer to the affected area; when delicate blade operation is needed, the outer shell can be retracted to avoid obstruction. This adjustable design solves the problem of poor irrigation and suction effects caused by the tube openings lagging behind the blade tip in existing fixed structures, and ensures that the irrigation and suction mechanisms do not interfere with the core functions of the blade tip, such as cutting and coagulation, under any conditions, greatly improving the flexibility and adaptability of surgical operations. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 for Figure 1 A magnified view of a portion of point A in the middle.

[0019] Figure 3 This is a cross-sectional view of the front end of the blade in this invention.

[0020] Figure 4 for Figure 3 A magnified view of a section at point B in the middle.

[0021] Figure 5This is a schematic diagram of the hose fixing sleeve in this invention.

[0022] The components are: 1-blade body, 2-handle, 3-outer shell, 4-rinsing chamber, 5-suction chamber, 6-rinsing tube, 7-inlet hose, 8-suction tube, 9-outlet hose, 10-fixing sleeve, 11-guide block, 12-limiting groove, 13-hinge seat, 14-lever, 15-strip hole, 16-storage groove, 17-reset chamber, 18-pressure rod, 19-pressure plate, 20-fixed shaft, 21-support plate, 22-spring, 23-annular stop, 24-accommodating groove, 25-hose fixing sleeve, 26-hose fixing groove, 27-flow control valve. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] Reference Figure 1-5 An ultrasonic scalpel with flushing and suction functions includes a scalpel body 1, a handle 2 connected to the rear end of the scalpel body 1, and a flushing and suction mechanism installed on the outer wall of the front end of the scalpel body 1. The flushing and suction mechanism includes a housing 3, which is slidably fitted onto the scalpel body 1. An annular flushing chamber 4 and an annular suction chamber 5 are arranged sequentially from the inside to the outside of the housing 3, and the flushing chamber 4 and suction chamber 5 are coaxially arranged. Several flushing pipes 6 are fixedly connected to the front end of the flushing chamber 4 along its circumference, and an inlet hose 7 is connected to the rear end of the flushing chamber 4. Several suction pipes 8 are fixedly connected to the front end of the suction chamber 5 along its circumference, and an outlet hose 9 is connected to the rear end of the suction chamber 5. The other end of the inlet hose 7 is connected to an external flushing fluid source, and the other end of the outlet hose 9 is connected to a negative pressure source. Flow control valves 27 are respectively connected to the outlet hose 9 and the inlet hose 7 to control the flow rate of flushing and suction, respectively. Multiple irrigation tubes 6 and suction tubes 8 are evenly distributed circumferentially, allowing irrigation fluid to be sprayed simultaneously onto the surgical area from multiple locations, forming a three-dimensional, annular irrigation field. Simultaneously, the suction tubes 8 can also draw fluid from multiple directions, effectively covering the entire surgical area and avoiding dead zones caused by single-point irrigation and suction. This significantly improves the uniformity and efficiency of irrigation and suction, ensuring a continuously clear surgical field. A fixing sleeve 10 is fixedly connected to the rear end of the outer shell 3. A locking mechanism is installed on the fixing sleeve 10, which is used to relatively fix the outer shell 3 to the blade body 1. This allows the surgeon to flexibly adjust the relative distance between the irrigation and suction tube openings and the blade tip according to surgical needs. This allows the tube openings to be pushed forward towards the affected area when strong irrigation and suction are needed, and to be retracted to avoid interference during delicate operations, balancing irrigation and suction effectiveness with blade operating space.

[0025] In this embodiment, the front end of the suction tube 8 extends beyond the front end of the flushing tube 6, thereby creating a certain distance difference to prevent the flushing liquid in the flushing tube 6 from being drawn into the suction tube 8 as soon as it sprays out of the outlet, thus affecting the flushing effect.

[0026] In this embodiment, guide blocks 11 extending axially along the blade body 1 are fixedly connected to the upper and lower ends of the blade body 1, respectively. Limiting grooves 12 are formed on the inner sidewalls of the outer shell 3 and the fixing sleeve 10 at positions corresponding to the guide blocks 11, and the guide blocks 11 slide in engagement with the limiting grooves 12. Through the sliding engagement between the guide blocks 11 and the limiting grooves 12, it can be ensured that the outer shell 3 can only translate axially along the blade body 1 during sliding adjustment, and will not rotate relative to the circumference; at the same time, this guiding structure also provides a precise positioning reference for the locking mechanism, enhancing the reliability of the overall structure.

[0027] In this embodiment, there are two locking mechanisms, which are respectively installed on the fixed sleeve 10 at positions corresponding to the guide block 11. Each locking mechanism includes a hinge seat 13, which is fixedly connected to the outer wall of the fixed sleeve 10. A lever 14 is hinged to the hinge seat 13. The front end of the lever 14 has a strip-shaped hole 15 extending along the length of the lever 14. A receiving groove 16 is provided on the inner side wall of the front part of the fixed sleeve 10. A reset cavity 17 is provided inside the fixed sleeve 10 outside the receiving groove 16. A mounting hole is provided radially at the front part of the fixed sleeve 10, and the mounting hole passes through the reset cavity 17 and the receiving groove 16 in sequence. A pressure rod 18 is slidably installed in the mounting hole. One end of the pressure rod 18 extends into the receiving groove 16 and is fixedly connected to a pressure plate 19. One end of the pressure rod 18 is fixedly connected to a fixing shaft 20. The fixing shaft 20 is slidably installed in the strip hole 15. The fixing shaft 20 can slide along the strip hole 15 and rotate relative to the strip hole 15. A support plate 21 is fixedly connected to the part of the pressure rod 18 located in the reset cavity 17. A spring 22 is sleeved on the pressure rod 18. The spring 22 is located between the outer inner wall of the reset cavity 17 and the outer surface of the support plate 21. The surface of the pressure plate 19 away from the pressure rod 18 is in close contact with the surface of the guide block 11. When the position of the outer shell 3 needs to be adjusted, press the rear end of the lever 14. The lever 14 rotates around the hinge seat 13, and the strip hole 15 at its front end drives the fixed shaft 20 to move radially outward. This pulls the pressure rod 18 and the pressure plate 19 outward against the elastic force of the spring 22, causing the pressure plate 19 to disengage from the guide block 11. At this time, the outer shell 3 can slide freely. After releasing the lever 14, the spring 22 returns to its original position and pushes the support plate 21 and the pressure rod 18 inward. The pressure plate 19 then presses the guide block 11 again, achieving automatic locking. This locking mechanism has a compact structure and is easy to operate. Doctors can complete the continuous operation of unlocking, sliding, and locking with one hand. After locking, the pressure plate 19 and the guide block 11 fit tightly, ensuring that the outer shell 3 will not accidentally shift under the high-frequency vibration of the ultrasonic scalpel.

[0028] In this embodiment, a first locking rack is provided on the surface of the pressure plate 19 away from the pressure rod 18, and a second locking rack is fixedly connected to the surface of the guide block 11. The first locking rack and the second locking rack are engaged with each other. Through the mutual meshing of the first locking rack and the second locking rack, the friction and biting force between the pressure plate 19 and the guide block 11 can be significantly increased, forming a reliable toothed anti-slip structure, further preventing the outer shell 3 from sliding when subjected to axial impact or vibration, thereby greatly improving the stability and safety of locking.

[0029] In this embodiment, annular blocks 23 are fixedly connected to the front and rear ends of the guide block 11 on the blade body 1, respectively. The two annular blocks 23 are used to limit the maximum forward and backward sliding stroke of the outer shell 3, effectively preventing the outer shell 3 from accidentally disengaging from the guide block 11 during adjustment, and playing a mechanical limiting role.

[0030] In this embodiment, the distance between the rear end face of the annular stop 23 located at the front end of the blade body 1 and the tip of the blade body 1 is less than the length of the suction tube 8. This dimensional relationship ensures that when the outer shell 3 slides to its foremost position, the front end of the suction tube 8 extends beyond the tip of the blade body 1, thereby preventing the tip of the blade body 1 from obstructing the contact between the suction tube 8 and the affected area.

[0031] In this embodiment, a receiving groove 24 is provided on the front end face of the outer shell 3. The receiving groove 24 is used to receive the annular stop 23 located at the front end of the blade 1. When the outer shell 3 slides to the front end, the annular stop 23 at the front end can be embedded in the receiving groove 24, making the structure of the outer shell 3 and the front end of the blade 1 more compact, without increasing the additional axial dimension, which is beneficial for flexible operation in a narrow abdominal cavity or surgical space.

[0032] In this embodiment, the blade body 1 is fitted with several hose fixing sleeves 25. Hose fixing grooves 26 are respectively formed on both sides of each hose fixing sleeve 25. The opening width of the hose fixing groove 26 is smaller than the diameter of the inlet hose 7 and the outlet hose 9. The inlet hose 7 and the outlet hose 9 are respectively engaged in the corresponding hose fixing grooves 26. The hose fixing sleeves 25 are made entirely of rubber and have a certain degree of flexibility, thus facilitating the insertion of the inlet hose 7 and the outlet hose 9 through the narrow opening into the corresponding hose fixing grooves 26. The hose fixing sleeves 25 can limit and manage the positioning of the inlet hose 7 and the outlet hose 9.

[0033] The above description is merely a preferred embodiment of the present invention and does not constitute any limitation on the technical scope of the present invention. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. An ultrasonic scalpel with flushing and suction functions, characterized in that, The device includes a blade body with a handle connected to its rear end. A flushing and suction mechanism is installed on the outer wall of the front end of the blade body. The flushing and suction mechanism includes a housing that is slidably fitted onto the blade body. An annular flushing chamber and an annular suction chamber are sequentially arranged from the inside to the outside of the housing. The flushing chamber and the suction chamber are coaxially arranged. Several flushing tubes are fixedly connected to the front end of the flushing chamber along the circumferential direction, and a liquid inlet hose is connected to the rear end of the flushing chamber. Several suction tubes are fixedly connected to the front end of the suction chamber along the circumferential direction, and a liquid outlet hose is connected to the rear end of the suction chamber. A fixing sleeve is fixedly connected to the rear end of the housing, and a locking mechanism is installed on the fixing sleeve. The locking mechanism is used to fix the housing and the blade body relative to each other.

2. An ultrasonic scalpel with rinsing and suction functions according to claim 1, characterized in that, The tip of the suction tube extends beyond the tip of the flushing tube.

3. An ultrasonic scalpel with rinsing and suction functions according to claim 1, characterized in that, The upper and lower ends of the blade body are respectively fixedly connected to guide blocks extending along the blade body axis. Limiting grooves are formed on the inner sidewalls of the outer shell and the fixed sleeve at the positions corresponding to the guide blocks, and the guide blocks slide in cooperation with the limiting grooves.

4. An ultrasonic scalpel with rinsing and suction functions according to claim 3, characterized in that, The locking mechanism comprises two parts, each mounted on the fixed sleeve at a position corresponding to the guide block. Each locking mechanism includes a hinge seat fixedly connected to the outer wall of the fixed sleeve. A lever is hinged to the hinge seat, and a strip-shaped hole extending along the length of the lever is formed at the front end of the lever. A receiving groove is formed on the inner front wall of the fixed sleeve, and a reset cavity is formed inside the fixed sleeve outside the receiving groove. A mounting hole is formed radially at the front of the fixed sleeve. A pressure rod is slidably installed in the mounting hole, penetrating the reset cavity and the storage groove. One inner end of the pressure rod extends into the storage groove and is fixedly connected to a pressure plate. One outer end of the pressure rod is fixedly connected to a fixing shaft, which is slidably installed in the strip hole. A support plate is fixedly connected to the part of the pressure rod located in the reset cavity. A spring is sleeved on the pressure rod, located between the outer inner wall of the reset cavity and the outer surface of the support plate. The surface of the pressure plate away from the pressure rod is in close contact with the surface of the guide block.

5. An ultrasonic scalpel with rinsing and suction functions according to claim 4, characterized in that, The surface of the pressure plate away from the pressure rod is provided with a first toothed rack, and the surface of the guide block is fixedly connected with a second toothed rack, and the first toothed rack and the second toothed rack are engaged.

6. An ultrasonic scalpel with rinsing and suction functions according to claim 5, characterized in that, The blade body is fixedly connected to annular blocks at the front and rear ends of the guide block, respectively.

7. An ultrasonic scalpel with rinsing and suction functions according to claim 6, characterized in that, The distance between the rear end face of the annular stop at the front end of the blade and the tip of the blade is less than the length of the suction tube.

8. An ultrasonic scalpel with rinsing and suction functions according to claim 7, characterized in that, A receiving groove is provided on the front end surface of the outer shell, and the receiving groove is used to accommodate the annular stop block located at the front end of the blade body.

9. An ultrasonic scalpel with rinsing and suction functions according to claim 1, characterized in that, The blade body is fitted with several hose fixing sleeves. Each hose fixing sleeve has a hose fixing groove on both sides. The opening width of the hose fixing groove is smaller than the diameter of the inlet hose and the outlet hose. The inlet hose and the outlet hose are respectively engaged in the corresponding hose fixing groove.

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