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CN-122005010-A - Ultrasonic knife with adjustable suction function

CN122005010ACN 122005010 ACN122005010 ACN 122005010ACN-122005010-A

Abstract

The invention discloses an ultrasonic knife with a controllable suction function, which comprises a handle and a knife body, wherein the knife body comprises an outer tube, a knife bar and a knife head, one end of the knife head is arranged, the outer tube is sleeved on the knife bar, a suction cavity and a liquid suction cavity are arranged in the outer tube, one end of the outer tube is close to the knife head, the other end of the outer tube extends into the handle along the edge, the suction cavity and the liquid suction cavity are respectively connected with a first hose and a second hose, the first hose is communicated with a first joint, the second hose is communicated with a second joint, a moving mechanism is arranged in the handle, and the moving mechanism can push the outer tube to completely cover the knife head. According to the invention, the suction cavity and the liquid suction cavity on the outer tube respectively work, the suction cavity is used for sucking smoke generated in an operation, so that the operation field is clear, the liquid suction cavity needs to be pushed by the moving mechanism to move the outer tube, the cutter head is completely covered, the liquid suction cavity can be better close to effusion, the effusion is conveniently sucked out, the suction dryness is ensured, the effective suction of two media is met, and the operation efficiency is ensured.

Inventors

  • SHEN DAO
  • Xia Cuifeng
  • ZHOU JINGRUI
  • CHEN WEIMIN
  • WANG JUE
  • YANG TAO

Assignees

  • 云南省肿瘤医院(昆明医科大学第三附属医院)

Dates

Publication Date
20260512
Application Date
20260409

Claims (8)

  1. 1. The ultrasonic knife with the adjustable suction function comprises a handle (1) and a knife body (2), wherein the knife body (2) is arranged on the handle (1), the ultrasonic knife is characterized in that the knife body (2) comprises an outer tube (21), a knife bar (22) and a knife head (23), the knife head (23) is arranged at one end of the knife bar (22) away from the handle (1), the outer tube (21) is sleeved on the knife bar (22), the outer tube (21) is in sliding fit with the knife bar (22), two opposite sides in the outer tube (21) are respectively provided with a suction cavity (211) and a suction cavity (212), one end of the outer tube (21) is close to the knife head (23), one ends of the suction cavity (211) and the suction cavity (212) close to the knife head (23) are in an opening state, the other end of the outer tube (21) extends into the handle (1), the suction cavity (211) and the suction cavity (212) are respectively connected with one end (31) of the handle (1) and one end (32) of the hose (32) is respectively connected with the hose (32), the hose (32) is far away from the first end (31), the first connector (33) and the second connector (34) are both arranged on the outer side of the handle (1), a moving mechanism (4) for pushing the outer tube (21) to slide on the cutter bar (22) is arranged in the handle (1), and the moving mechanism (4) can push the outer tube (21) to completely cover the cutter head (23).
  2. 2. The ultrasonic knife with the adjustable suction function according to claim 1, wherein two opposite sides in the outer tube (21) are respectively provided with a baffle plate (213), and the two baffle plates (213) and the inner wall of the outer tube (21) form the suction cavity (211) and the liquid suction cavity (212) respectively.
  3. 3. The ultrasonic knife with the adjustable suction function according to claim 2, wherein a push plate (5) is arranged at one end of the outer tube (21) in the handle (1), the moving mechanism (4) is a telescopic motor (41), the telescopic motor (41) is installed in the handle (1), and an output shaft of the telescopic motor (41) is connected with the push plate (5).
  4. 4. The ultrasonic blade with the adjustable suction function according to claim 3, wherein the handle (1) is provided with a push switch (11), and the push switch (11) is electrically connected to the telescopic motor (41).
  5. 5. The ultrasonic knife with the adjustable suction function according to claim 2, wherein one end of the outer tube (21) in the handle (1) is provided with a limiting ring (6), a part of the outer tube (21) in the handle (1) is sleeved with a first spring (7), one end of the first spring (7) is connected to the inner wall of the handle (1), the other end of the first spring (7) is connected to the limiting ring (6), the moving mechanism (4) comprises a pressing plate (42), a second spring (43), a sliding rod (44), a first rack (45), a gear (46) and a second rack (47), the pressing plate (42) is arranged in front of the pressing handle (8) on the handle (1), the upper end of the pressing plate (42) is inserted in the handle (1), the sliding rod (44) is provided with two sliding rods and is symmetrically arranged on the pressing plate (42), the sliding rod (44) is connected to the handle (1) in a sliding mode, the second spring (43) is sleeved on the pressing plate (43), and when the pressing plate (21) is arranged on the outer tube (21) in a natural state, and the sliding rod (21) is not in a natural state, the first rack (45) is arranged on the pressing plate (42), the second rack (47) is parallel to the first rack (45) and is arranged on the limiting ring (6), the gear (46) is arranged between the first rack (45) and the second rack (47), the gear (46) is rotationally connected to the handle (1), and the gear (46) is respectively meshed with the first rack (45) and the second rack (47).
  6. 6. The ultrasonic knife with the adjustable suction function of claim 5, wherein the moving mechanism (4) further comprises a pressing rod (48), one end of the pressing rod (48) is connected with the pressing plate (42), the other end of the pressing rod (48) is pressed on the pressing handle (8), a limiting groove (81) matched with the pressing rod (48) is formed in the pressing handle (8), one end, far away from the pressing plate (42), of the pressing rod (48) is inserted into the limiting groove (81), and when the pressing plate (42) is pressed, the pressing rod (48) presses the pressing handle (8) to enable the knife head (23) to be synchronously closed.
  7. 7. An ultrasonic blade with adjustable suction function according to any one of claims 2 or 6, characterized in that the handle (1) is provided with an adjusting knob (12), the adjusting knob (12) being used for selecting the working mode.
  8. 8. The ultrasonic blade with the adjustable suction function according to claim 7, wherein one end of the outer tube (21) close to the blade (23) is provided with a flexible protection ring (9).

Description

Ultrasonic knife with adjustable suction function Technical Field The invention relates to the technical field of medical instruments, in particular to an ultrasonic knife with a controllable suction function. Background The ultrasonic knife is used as a novel surgical energy device, and utilizes high-frequency ultrasonic vibration to coagulate and cut tissues, has the advantages of small thermal injury, small eschar and the like, and is widely applied to minimally invasive surgery and open surgery. During the operation, the ultrasonic knife can generate a great deal of operation smoke (namely 'electrosurgical smoke') due to tissue gasification during operation, and meanwhile, liquid can be accumulated in the operation area due to irrigation, bleeding or tissue seepage. The surgical smoke not only shields the surgical field and affects the operation precision, but also contains harmful chemical substances, active viruses and cell fragments which also form health risks for the surgical team, and the effusion in the surgical area can interfere the operation of instruments, increase the uncertainty of thermal injury of tissues and prolong the operation time. In order to solve the problems, the existing part of ultrasonic knife systems integrate the suction function and aim at realizing the integrated operation of cutting, hemostasis and smoke discharging/sucking through the same instrument. However, the ultrasonic knife integrating the suction function has a single suction channel, and the problems of smoking and imbibition cannot be simultaneously considered. The suction passage of the prior art is usually a single path, and is not designed for distinguishing the physical characteristics of gas and liquid. The smoking requires a high flow rate, low negative pressure, large cross-sectional area channel to quickly trap dispersed smoke particles, while the imbibition requires a medium and low flow rate, higher negative pressure, anti-clogging channel to effectively remove viscous liquids and tissue debris. The existing structure often looks at each other, and smoke dissipation is caused by unreasonable airflow paths during smoking, and the smoke dissipation is easily blocked due to too thin channels or turning of flow channels during liquid suction, so that effective suction of two media is difficult to meet simultaneously, and the operation efficiency is affected. Disclosure of Invention The invention aims to provide an ultrasonic knife with an adjustable suction function, which can respectively work through a suction cavity and a suction cavity on an outer tube, thereby meeting the effective suction of two media and ensuring the operation efficiency. The technical aim of the invention is realized by the following technical scheme: The utility model provides a take can regulate and control ultrasonic knife that attracts function, includes handle and cutter body, the cutter body install in on the handle, the cutter body includes outer tube, cutter arbor and tool bit, the tool bit is located the cutter arbor is kept away from the one end of handle, the outer tube cover is located on the cutter arbor, the outer tube in the cutter arbor forms sliding fit, opposite both sides are equipped with respectively in the outer tube and inhale air cavity and imbibition chamber, the one end of outer tube is close to the tool bit, inhale air cavity and imbibition chamber and be close to the one end of tool bit is open state, the other end of outer tube is followed and is stretched into in the handle, inhale air cavity and imbibition chamber with the one end in the handle is connected with first hose and second hose respectively, the one end intercommunication that first hose kept away from inhale the air cavity has first joint, the one end intercommunication that second hose kept away from imbibition chamber has the second joint, first joint and second joint all are located the outside of handle, be equipped with in the handle and promote the outer tube is the gliding mobile mechanism on the handle, mobile mechanism promotes the outer tube in the handle can cover completely. By adopting the technical scheme, the air suction cavity can work independently, smoke generated in the operation is sucked out, and the operation field is ensured to be clear. The liquid suction cavity needs to push the outer tube to move by the moving mechanism, the cutter head is completely covered, liquid suction cavity can be better pressed close to liquid accumulation, liquid accumulation is conveniently sucked out, and the suction dryness is guaranteed. The invention is further provided with the partition boards at two opposite sides in the outer tube, and the two partition boards and the inner wall of the outer tube respectively form the air suction cavity and the liquid suction cavity. By adopting the technical scheme, the formation of the suction cavity and the liquid suction cavity is facilitated, and the strength of the suction cavity and the l