CN216495517U

CN216495517U - Ultrasonic surgical instrument

Info

Publication number: CN216495517U
Application number: CN202122363944.3U
Authority: CN
Inventors: 刘青; 姚银峰; 周晴杰; 顾林飞
Original assignee: BJ ZHF Panther Medical Equipment Co Ltd
Current assignee: BJ ZHF Panther Medical Equipment Co Ltd
Priority date: 2021-09-28
Filing date: 2021-09-28
Publication date: 2022-05-13
Anticipated expiration: 2031-09-28

Abstract

The utility model discloses an ultrasonic surgical instrument, which comprises a driving handle, a waveguide rod sleeved on an inner sleeve, a cutter head assembly, a push-pull member, a motor and a transmission member, wherein the far end of the driving handle is connected with the near end of the waveguide rod; when the cutter head component performs opening action, the motor drives the push-pull component to perform pull-back action, and the transmission component is driven to push the inner sleeve to move towards the distal direction. According to the scheme, the traditional manual mode for closing the cutter head assembly is changed into the electric automatic closing mode of the cutter head assembly, so that the problem of labor consumption of an operator in closing the cutter head is greatly solved.

Description

Ultrasonic surgical instrument

Technical Field

The utility model relates to the field of medical instruments, in particular to an ultrasonic surgical instrument.

Background

The ultrasonic cutting hemostatic scalpel is a medical instrument which is high in use frequency and applied to chest and abdomen surgery, the instrument integrates separation, cutting and hemostasis, the configuration and replacement of instruments in surgery are reduced, the surgery time is greatly shortened, small blood vessels can be sealed while tissues are cut, bleeding in surgery is obviously reduced, the cutting precision is high, eschar and smoke are generated rarely, the safety is high when important visceral organs and the nearby parts of large blood vessels are separated and cut, no current passes through an organism in a system, conductive tissue damage cannot occur, and the surgery safety is improved.

In the ultrasonic surgical instrument ultrasonic scalpel product on the market at present, as shown in fig. 1, mainly includes: the machine comprises a main machine (1), a driving handle (2), a cutter head (3) and a pedal (4). The main machine (1) is respectively connected with one end of the pedal (4) and one end of the driving handle (2) through connecting wires, the other end of the driving handle (2) is connected with the cutter head (3), a transducer (not shown in figure 1) is arranged inside the driving handle (2), the transducer converts high-frequency electric energy provided by the main machine (1) into ultrasonic mechanical vibration energy, transmits the ultrasonic mechanical vibration energy to the cutter head (3) and simultaneously transmits ultrasonic energy, and blood stopping cutting or coagulation is carried out on tissues, and the vibration frequency of the cutter head is about 55.5 kHz.

The far end of the cutter head component (3) of the ultrasonic knife is similar to a pair of scissors and is provided with two ends, one end is a cutter tip end (31) for applying ultrasonic waves, the other end is a clamping pad (32) with insections, when tissue is clamped, the clamping pad (32) is close to the cutter tip end (31), when the tissue is released, the clamping pad (32) is far away from the cutter tip end (31), and the clamping pad (32) can better clamp the tissue to enhance the blood coagulation effect.

A spring is arranged in a trigger (21) of an ultrasonic knife in the prior art, when a knife head component (3) of the ultrasonic knife works, an operator needs to manually close the trigger (21) of a driving handle (2) to enable a knife tip at the far end of the knife head component (3) to clamp tissues and then cut, after cutting is completed, the trigger (21) is loosened, and the trigger (21) can automatically rebound under the action of the spring.

By adopting the ultrasonic knife with the prior structure, on one hand, although the built-in spring can realize the automatic springing-off of the trigger (21), the elastic force of the spring also increases the force for closing the trigger, and the ultrasonic knife can cause fatigue to a user after being used for a long time. On the other hand, when the ultrasonic scalpel is in operation and the scalpel head is closed, the user needs to hold the trigger all the time until the tissue is cut, and during cutting, the hand needs to exert force all the time to ensure that the front end tissue is clamped, and if the front end does not clamp the tissue as required, the cutting hemostasis effect may be affected.

At present, some ultrasonic knife head manufacturers adopt a mode of arranging a clamping component in the handle, namely, when the knife head component is closed, the knife head component cannot automatically rebound, and only when a trigger is slightly pushed to the opposite direction of closing by hands, the knife head component is automatically rebounded under stress. This solution, though, solves the inconvenience of the operator gripping the trigger for a long time. However, due to the change of the operation mode, not only the user is required to change the use habit to adapt to the new cutter head assembly, but more importantly, when the cutter head assembly is closed, the operator is still required to exert force to overcome the elastic force of the spring, namely, the above scheme only solves the problem that the operator does not need to hold the cutter head assembly all the time, and does not solve the problem of the labor consumption of the operator when the cutter head assembly is initially closed.

How to design an ultrasonic surgical instrument to solve the problem of labor waste when the cutter head assembly is initially closed is a technical problem which needs to be solved urgently by a person skilled in the art.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem of labor consumption of an ultrasonic surgical instrument when a cutter head is initially closed in the operation process in the prior art.

In order to solve the technical problems, the technical scheme provided by the utility model is as follows:

an ultrasonic surgical instrument comprises a driving handle, a waveguide rod sleeved on an inner sleeve, and a cutter head assembly, wherein the far end of the driving handle is connected with the near end of the waveguide rod, the far end of the waveguide rod is connected with the near end of the cutter head assembly, and the ultrasonic surgical instrument is characterized by further comprising a push-pull member, a motor and a transmission member,

the proximal end of the push-pull component is connected with the motor, the distal end of the push-pull component is movably connected with the proximal end of the transmission component, the distal end of the transmission component is connected with the proximal end of the inner sleeve,

when the cutter head assembly performs a closing action, the motor drives the push-pull member to perform a pulling-back action, and drives the transmission member to pull the inner sleeve to move towards the proximal direction;

when the cutter head assembly performs opening action, the motor drives the push-pull member to perform pushing action, and drives the transmission member to push the inner sleeve to move towards the distal direction.

Further, still include the switch element, the switch element sets up on drive handle is used for controlling the start-stop action of motor.

Further, the motor includes:

spacing unit, detecting element, drive unit and the control unit, wherein:

the limiting unit is used for monitoring whether the motor runs to a preset position or not and sending monitoring information to the control unit;

the detection unit is used for detecting the parameter information of the motor and sending the parameter information to the control unit;

the control unit is used for determining the working state of the motor according to the received parameter information and the monitoring information of the limiting unit and sending a control signal to the driving unit;

the drive unit; the motor is driven to work according to the control signal sent by the control unit.

Further, the parameter information includes an input current/voltage of the motor; and the control unit is used for determining that the input current/voltage exceeds a preset input current/voltage threshold range according to the received input current/voltage, and then sending a first control signal to the driving unit to enable the driving unit to drive the motor to stop working.

Further, the transmission component comprises a first transmission rod, a connecting rod and a second transmission rod,

the first end of the first transmission rod is movably connected with the far end of the push-pull component;

the second end of the first transmission rod is connected with the first end of the second transmission rod through the connecting rod;

the third end of the first transmission rod is movably fixed on the driving handle inner shell through a first pin, so that the first transmission rod performs limiting movement by taking the third end as a shaft under the action of the push-pull component;

the second end of the second transmission rod is connected with the proximal end of the inner sleeve.

Furthermore, the surface of the second transmission rod is at least provided with a through hole, a second pin is inserted into the through hole, the length of the second pin is greater than the thickness of the second transmission rod, the inner wall of the outer shell of the driving handle is correspondingly and respectively provided with a strip-shaped groove, and the second pin can slide along the strip-shaped groove.

Furthermore, the first transmission rod is of a Y-shaped structure or a V-shaped structure, and the second transmission rod is of an L-shaped structure.

After adopting such design, the utility model has at least the following advantages:

(1) according to the technical scheme disclosed by the utility model, the traditional manual closing is changed into electric closing, so that the problem of labor consumption of an operator when the cutter head is initially closed is greatly relieved.

(2) According to the technical scheme disclosed by the utility model, more stable and more continuous pressure can be brought by electric closing, so that the cutting effect is more uniform and consistent.

(3) The utility model has simple structure, good effect, low cost and easy process realization.

Drawings

The foregoing is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and the detailed description.

FIG. 1 is a schematic view of a prior art ultrasonic surgical instrument system;

FIG. 2 is a schematic view of the ultrasonic surgical instrument of the present invention;

FIG. 3 is a schematic view of the drive stem construction of the present invention;

FIG. 4 is an exploded view of the drive stem portion of the present invention;

FIG. 5 is a schematic view of the motor operation of the present invention;

FIG. 6 is a schematic view of the motor structure of the present invention;

reference numerals 1 host, 2 drive handles, 21 triggers, 3-bit assemblies, 31-bit tips, 32-grip pads, 4-foot pedals, 5-wave guide rods, 6-inner sleeves, 7-push-pull members, 8-motors, 81-limit units, 82-detection units, 83-control units, 84-drive units, 9-transmission members, 91-first transmission rods, first ends of 911-first transmission rods, second ends of 912-first transmission rods, 913-first pins, 92-connecting rods, 93-second transmission rods, 931-through holes, 932-second pins, 933-grooves, 10-switch elements,

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In this document, "upper", "lower", and the like are used only to indicate relative positional relationships between the relevant portions, and are not limited to absolute positions of the relevant portions.

Unless otherwise indicated, the numerical ranges herein include not only the entire range within its two endpoints, but also several sub-ranges subsumed therein.

Hereinafter, the end of each member closer to the operator is defined as the proximal end, and the end farther from the operator is defined as the distal end. The expressions proximal and distal are only used for simplicity and clarity of description and should not be construed as limiting the utility model in any way.

The utility model will be explained in connection with fig. 2-6.

The utility model discloses an ultrasonic surgical instrument, which comprises a driving handle (2), a waveguide rod (5) sleeved on an inner sleeve (6), a cutter head component (3), a push-pull component (7), a motor (8) and a transmission component (9), wherein the far end of the driving handle (2) is connected with the near end of the waveguide rod (5), the far end of the waveguide rod (5) is connected with the near end of the cutter head component (3), the near end of the push-pull component (7) is connected with the motor (8), the far end of the push-pull component (7) is movably connected with the near end of the transmission component (9), the far end of the transmission component (9) is connected with the near end of the inner sleeve (6),

when the cutter head component (3) performs closing action, the motor (8) drives the push-pull component (7) to perform pull-back action, and the driving component (9) drives the inner sleeve (6) to move towards the proximal direction; when the cutter head component (3) opens, the motor (8) drives the push-pull component (7) to perform pushing action, and the driving transmission component (9) drives the inner sleeve (6) to move towards the far end.

Specifically, when the cutter head component (3) is closed, the motor (8) is started, the motor (8) starts to work, the push-pull component (7) is driven to advance towards the near end direction in the horizontal direction, so that the transmission component (9) is driven to move towards the near end direction in the horizontal direction, the far end of the transmission component (9) is connected with the near end of the inner sleeve (6), the transmission component (9) pushes the inner sleeve (6) to move towards the near end, and the inner sleeve (6) moves towards the near end, so that the cutter head component (3) is closed.

The cutter head assembly (3) comprises a clamping pad (31) and a cutter tip (32), the proximal end of the clamping pad (31) is movably connected with the proximal end of the cutter tip (32), and the transmission member (9) pushes the inner sleeve (6) to move towards the proximal end, so that the distal end of the clamping pad (31) of the cutter head assembly (3) and the distal end of the cutter tip (32) move relatively to perform a closing action.

When the cutter head component (3) is opened, the motor (8) is started, the motor (8) starts to work, the push-pull component (7) is driven to push and pull towards the far-end direction in the horizontal direction, so that the transmission component (9) is driven to move towards the far-end direction along the horizontal direction, the far end of the transmission component (9) is fixedly connected with the near end of the inner sleeve (6), the transmission component (9) pushes the inner sleeve (6) to move towards the far end, and the far end of the clamping pad (31) of the cutter head component (3) and the far end of the cutter tip end (32) move towards each other to be opened due to the movement of the inner sleeve (6) towards the far end.

Further, the motor can be set as required and adopt multiple speed modes such as uniform speed, step speed, in addition, the opening speed and the closing speed of tool bit subassembly can be the same or can be different, and specific opening and closing speed is set as required, and need not be repeated here.

According to the scheme, the traditional manual mode for closing the cutter head assembly is changed into the electric automatic opening and closing mode of the cutter head assembly, so that the problem of labor consumption of an operator in opening and closing the cutter head assembly is greatly solved.

The scheme of the utility model also comprises a switch element (10), wherein the switch element (10) is arranged on the shell of the ultrasonic knife, and the switch element (10) is used for controlling the starting and stopping actions of the motor (8). When the switch element (10) is closed, the motor (8) starts to operate, and when the switch element (10) is opened, the motor (8) stops operating.

In particular, the switch element (10) may be provided on a trigger (21) for easy operation by an operator. When a switch element (10) on the trigger is pressed, the motor (8) starts to work, and the cutter head component (3) executes closing action; when the switch element (10) on the trigger is released, the cutter head assembly (3) performs an opening action.

Of course, it can also be provided that the trigger switch element (10) is pressed for a short time, for example, immediately after the switch element (10) on the trigger is pressed, the motor (8) is started, and the cutter head assembly (3) performs the closing action; immediately after the switch element (10) on the trigger is pressed again, the cutter head assembly (3) performs an opening action. The switch element (10) in the scheme of the utility model is only required to ensure that the switch element (10) can control the starting action of the motor (8). Different starting modes can be set according to the convenience degree of operation of an operator.

Further, the switch element (10) may be a tact switch or a touch switch, and when the switch element is a touch switch element, the touch switch element is also disposed at the trigger, and when a finger is placed on a touch panel at the trigger, the cutter head assembly performs a closing action, and when the finger is removed from the touch panel, the cutter head assembly performs an opening action.

In addition, the working power supply of the motor (8) can be obtained through a built-in battery, and a socket can be arranged at the tail end of the shell of the driving handle (2) and directly obtained from the host (1).

In an embodiment of the present invention, the motor (8) includes: a limiting unit (81), a detection unit (82), a control unit (83) and a driving unit (84);

the limiting unit (81) is connected with the control unit (83) and used for monitoring whether the motor (8) runs to a preset position or not and sending monitoring information to the control unit (83);

specifically, the stroke displacement range of the motor (8) is preset in advance, the motor (8) moves in the preset displacement range and belongs to a normal working range, the motor (8) exceeds the preset displacement range and then belongs to working abnormity, and the limit switch (81) sends abnormal information to the control unit (83).

The limiting unit (81) is a limiting switch, when the motor (8) rotates forwards, the pushing and pulling component (7) is driven to move from the initial position to the far end and the cutter head component (3) is driven to perform clamping action through the transmission unit (9), and when the pushing and pulling component (7) moves to the preset farthest position, the limiting switch is started to stop the motor; when the motor (8) rotates reversely, the push-pull member (7) is driven to move from the farthest position to the near end and the cutter head assembly (3) is driven to perform opening action through the transmission unit (9), and when the push-pull member (7) moves to the initial position, the limit switch is started to stop the motor (8).

In the embodiment of the utility model, the distance between the push-pull member (7) from the initial position to the maximum position is larger than the relative movement distance between the clamping pad and the knife tip of the knife head component (3). Preferably, the distance between the push-pull member (7) from the initial position to the maximum position is about 1cm to 3 cm.

The detection unit (82) is connected with the control unit (83) and is used for detecting the parameter information of the motor (8) and sending the parameter information to the control unit (83);

and the control unit (83) is used for determining the working state of the motor (8) according to the received parameter information and the monitoring information of the limiting unit, and sending a control signal to the driving unit (84) to enable the driving unit (84) to drive the motor (8) to do corresponding action.

The parameter information is an input current signal of the motor (8), and when the control unit (83) confirms that the input current exceeds a preset input current threshold range according to the input current signal and the working state of the motor (8) is abnormal, the control unit (83) sends a first control signal to the push-pull member (7) to enable the driving unit (84) to drive the motor (8) to stop operating.

The parameter information may be any parameter information such as input voltage, output current of the motor (8), or other parameter information indicating a real-time state of the motor, and may be set as needed, which is not limited in the embodiment of the present invention.

According to the utility model, the detection unit (82) is added to monitor the working state of the motor (8), so that on one hand, the service life of the motor is effectively prolonged, and on the other hand, the motor is more accurately controlled electrically.

In the scheme of the utility model, the transmission member (9) comprises a first transmission rod (91), a connecting rod (92) and a second transmission rod (93), wherein the first end of the first transmission rod (91) is movably connected with the far end of the push-pull member (7); the second end of the first transmission rod (91) is connected with the first end of the second transmission rod (93) through a connecting rod (92); the third end of the first transmission rod (91) is movably fixed on the inner shell of the driving handle through a first pin, so that the first transmission rod (91) performs limiting movement by taking the third end as a shaft under the action of the push-pull component (7); the third end of the second transmission rod (93) is connected with the proximal end of the inner sleeve (6).

Specifically, a first end (911) of a first transmission rod (91) is movably connected with the far end of a push-pull member (7) to form a first movable connection point; the second end (912) of the first transmission rod (91) is connected with one end of the connecting rod (92) to form a second connection point; the other end of the connecting rod (92) is connected with the first end of the second transmission rod (93) to form a third connection point; the third end of first transfer line (91) is equipped with a through-hole, through first nail round pin (913) and apparatus inner shell activity fixed connection, and first transfer line (91) can be first nail round pin (913) for the axle carry out spacing rotation.

The first end of the first transmission rod (91) is tightly attached to the side wall of the inner shell of the instrument, when the push-pull component (7) is driven by the motor (8) to move towards the far end along the horizontal direction, the first movable connecting point also moves towards the far end, and due to the resisting action of the side wall of the inner shell of the instrument and the movable connection of the first end (911) of the first transmission rod (91) and the far end of the push-pull component (7), the first transmission rod (91) is inclined by taking the first movable connecting point as the axial direction of the push-pull component (7), so that the second end (912) of the first transmission rod (91) is driven to move downwards along the direction of the second connecting point connected with the connecting rod (92), the second transmission rod (93) moves towards the far end along the horizontal direction, the inner sleeve (6) is pushed to move towards the far end, and the cutter head component (3) is opened.

When the push-pull component (7) moves towards the near end along the horizontal direction under the driving of the motor (8), the first movable connecting point also moves towards the near end, so that the second end (912) of the first transmission rod (91) is driven to move upwards along the direction of the second connecting point connected with the connecting rod (92), the second transmission rod (93) moves towards the far end along the horizontal direction, the inner sleeve (6) is pulled to move towards the far end, and the cutter head component (3) is closed.

Furthermore, the surface of the second transmission rod is at least provided with a through hole (931), a second pin (932) is inserted into the through hole (931), the length of the second pin (932) is larger than the thickness of the second transmission rod (93), the inner wall of the outer shell of the instrument is correspondingly provided with a strip-shaped groove (933) which is a sliding track of the second pin (932), and the second pin (932) can slide along the strip-shaped groove.

Preferably, the number of the through holes (931) is 2, and the through holes are respectively positioned at two ends of the second transmission rod (93). The inner wall of the outer shell of the instrument is respectively provided with a strip-shaped groove (933), and the two ends of the second pin (932) are respectively positioned in the strip-shaped grooves (933) and can slide along the strip-shaped grooves (933).

The strip-shaped groove (933) is a sliding track of the second pin (932), so that the second transmission rod (93) is fixed conveniently, and the second transmission rod (93) slides stably in the horizontal direction.

In the embodiment of the utility model, the first transmission rod (91) is of a Y-shaped structure or a V-shaped structure. The second transmission rod (93) is of an L-shaped structure. Other shapes and configurations may be used as desired.

The utility model has simple structure, reduces the cost of purchasing parts by enterprises, reduces the operation cost of patients, has good effect and low cost, and is easy to realize the process.

Other embodiments of the utility model will be apparent to those skilled in the art from consideration of the specification and practice of the utility model disclosed herein. This application is intended to cover any variations, uses, or adaptations of the utility model following, in general, the principles of the utility model and including such departures from the present disclosure as come within known or customary practice within the art to which the utility model pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the utility model being indicated by the following claims.

It will be understood that the utility model is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the utility model is limited only by the appended claims.

Claims

1. An ultrasonic surgical instrument comprises a driving handle, a waveguide rod sleeved on an inner sleeve, and a cutter head assembly, wherein the far end of the driving handle is connected with the near end of the waveguide rod, the far end of the waveguide rod is connected with the near end of the cutter head assembly, and the ultrasonic surgical instrument is characterized by further comprising a push-pull member, a motor and a transmission member,

2. The ultrasonic surgical instrument of claim 1, further comprising: and the switch element is arranged on the driving handle and is used for controlling the starting and stopping actions of the motor.

3. The ultrasonic surgical instrument of claim 2, wherein the motor comprises:

spacing unit, detecting element, the control unit and drive unit, wherein:

and the driving unit is used for driving the motor to work according to the control signal sent by the control unit.

4. The ultrasonic surgical instrument of claim 3, wherein said parameter information includes input current/voltage of said motor; and the control unit is used for determining that the input current/voltage exceeds a preset input current/voltage threshold range according to the received input current/voltage, and then sending a first control signal to the driving unit to enable the driving unit to drive the motor to stop working.

5. The ultrasonic surgical device of claim 3, wherein the drive member comprises a first drive rod, a connecting rod, a second drive rod,

6. The ultrasonic surgical device of claim 5, wherein at least one through hole is formed in the surface of the second transmission rod, a second pin is inserted into the through hole, the length of the second pin is greater than the thickness of the second transmission rod, and a strip-shaped groove is correspondingly formed in the inner wall of the outer shell of the driving handle, and the second pin can slide along the strip-shaped groove.

7. The ultrasonic surgical device of claim 6, wherein the first drive link is a Y-shaped configuration or a V-shaped configuration and the second drive link is an L-shaped configuration.

8. The ultrasonic surgical device of claim 6, wherein the push-pull member is spaced from the initial position to the maximum position by a distance greater than a relative movement distance between the gripping pad and the blade tip of the blade assembly.

9. The ultrasonic surgical device of claim 8, wherein the push-pull member is spaced from the initial position to the maximum position by a distance in the range of 1cm to 3 cm.