CN209951349U

CN209951349U - Ultrasonic surgical instrument

Info

Publication number: CN209951349U
Application number: CN201822218449.1U
Authority: CN
Inventors: 聂红林; 陈继东; 李枝东; 朱国征; 常王桃; 张广斌; 顾晓页
Original assignee: SHANGHAI YISI MEDICAL TECHNOLOGY Co Ltd; Yisi Suzhou Medical Technology Co Ltd
Current assignee: Shanghai Yisi Medical Technology Co.,Ltd.; Yisi Suzhou Medical Technology Co Ltd
Priority date: 2018-12-27
Filing date: 2018-12-27
Publication date: 2020-01-17
Anticipated expiration: 2028-12-27

Abstract

The utility model provides an ultrasonic surgical instrument of blood coagulation function is aroused to side key, ultrasonic surgical instrument is including cutting button, blood coagulation button, cutter arbor, clamp, thimble assembly, grab handle and inner structure, and wherein, press down the cutting button by the forefinger and arouse the cutting function, press down the blood coagulation button by the thumb and arouse the blood coagulation function. The utility model discloses can reduce doctor's maloperation among the actual operation process, alleviate fatigue. Simultaneously, the side key arouses the blood coagulation function and has compromise the use custom of doctor left and right hand, and the doctor who excels in left and right hand operation all can facilitate the use the utility model discloses the apparatus.

Description

Ultrasonic surgical instrument

Technical Field

The utility model relates to an ultrasonic surgical instrument, in particular to an ultrasonic surgical instrument with a side key exciting blood coagulation function.

Background

With the popularization of minimally invasive surgery, an ultrasonic surgical knife has become a conventional surgical instrument. The ultrasonic scalpel mechanically oscillates the scalpel head at a certain ultrasonic frequency through the ultrasonic frequency generator, so that water molecules in tissues are vaporized, protein hydrogen bonds are broken, cells are disintegrated, the tissues are cut or solidified, and blood vessels can be closed. The ultrasonic surgical blade accomplishes both tissue cutting and coagulation simultaneously with less lateral thermal damage.

The ultrasonic scalpel mainly comprises an ultrasonic frequency generator, a transducer and a surgical instrument. The ultrasonic frequency generator sends out an oscillating electric signal, the transducer converts the oscillating electric signal into mechanical vibration, and the surgical instrument cuts and coagulates the tissues by utilizing the mechanical vibration of the transducer. The surgical instrument generally comprises a knife bar, a clamp forming a clamping structure with a knife head (a cutting part at the head of the knife bar), a sleeve surrounding the knife bar, a handle and a grasping mechanism. The cutter bar transmits the mechanical vibration of the transducer to the cutter head; the cutter head and the clamp are matched to clamp tissues to realize cutting and blood coagulation functions; the sleeve separates the cutter bar from the outside to play the role of protecting and supporting the cutter bar on one hand, and on the other hand, the sleeve and the clamp form a connecting rod mechanism which can drive the clamp to close and open; the grab handle and the grab holding mechanism are held by hands of a doctor, can operate the clamp to open and close, and are provided with switch keys which can control the ultrasonic frequency generator to start or stop outputting oscillating electric signals, and the switch keys are generally called cutting keys and blood coagulation keys. As the name suggests, the cutting key mainly completes the functions of tissue stripping and cutting, the blood coagulation key mainly completes the function of blood vessel coagulation, and the frequency of cutting function used in the actual operation process is higher than that of blood coagulation.

At present, most ultrasonic surgical instruments's cutting button and blood coagulation button all arrange in the position is pressed to the forefinger directly in front to the ultrasonic scalpel to press the realization by the forefinger entirely and arouse the function, lead to doctor's maloperation easily in the use, and the frequency that uses cutting function is higher than the frequency of blood coagulation function in the actual operation process, and two kinds of button functions and mutual switch are accomplished for a long time to the forefinger, arouse fatigue easily, have further increased the risk of false triggering.

In order to solve the problem of false triggering, one key of the existing ultrasonic surgical instrument is designed with a plurality of pawl salient points, and the other key is designed with a smooth surface. In the operation, before the stimulation, a doctor needs to confirm that the cutting key or the blood coagulation key is formed by the convex points, and then the doctor carries out the tissue stripping or blood coagulation operation. This can reduce the false triggering risk to a certain extent, but can't avoid the forefinger to accomplish two kinds of button functions and the fatigue that switches over each other for a long time, in addition, presses the pawl bump for a long time, and the finger is slightly painful. There is also the ultrasonic surgical instrument cutting and the blood coagulation button all arrange the design scheme in ultrasonic scalpel side rear, arouses blood coagulation and cutting button through pressing the thumb, but the thumb needs the perk to be higher than normal position when pressing, and the operation degree of difficulty of thumb obviously increases. The coagulation button and the cutting button are both triggered by thumb pressure, and the risk of false triggering also exists. In the prior art, in order to avoid confusion between the two keys, one of the keys is arranged on the side surface of the ultrasonic surgical instrument, but the keys are in a form of the side surface vertical direction, so that the comfort level of the thumb in operation is not high, and a detailed circuit switching scheme is not described in the patent.

Disclosure of Invention

In order to solve the technical problems, reduce the false triggering of doctors in the actual operation process and relieve fatigue, the invention provides an ultrasonic surgical instrument on one hand, which comprises a cutter bar, a first key, a second key, a grab handle, a transmission mechanism and other internal structures, wherein the first key is positioned right in front of the instrument, the second key is positioned on the oblique side surface of the instrument, and the first key and/or the second key can realize sliding or rotating in a certain stroke.

Preferably, the first key is a cutting key, and the second key is a blood coagulation key.

Further, the handle comprises a shell, including a left shell, a right shell and other parts.

Furthermore, the index finger presses the cutting key to excite the cutting function, and the thumb presses the blood coagulation key to excite the blood coagulation function.

Furthermore, the second keys can be symmetrically arranged on the inclined planes at the two sides of the instrument.

Furthermore, the second key rotates around a rotating pin shaft, the rotating pin shaft penetrates through the second key mounting hole, and two ends of the rotating pin shaft are respectively mounted on rotating pin shaft holes of the left shell and the right shell.

Furthermore, the rotating pin shaft penetrates through the transmission mechanism, and the second key is connected with the transmission mechanism in parallel.

Furthermore, the limiting surface of the second key is limited by the limiting plane of the shell of the grab handle, so that the second key can only rotate around the rotating pin shaft.

Furthermore, a circuit board is arranged in the grab handle, and the first key and the second key realize the excitation function by pressing the circuit board.

Furthermore, the first key and/or the second key can realize sliding in a certain stroke, so that false touch triggering is prevented.

Furthermore, the first key is arranged in a mounting groove, the mounting groove is composed of a guide sliding groove, an upper guide table and a lower guide table, and the guide boss of the first key slides in the guide sliding groove.

Furthermore, an elastic mechanism is arranged between the first key and the circuit board, and between the second key and the circuit board.

Preferably, the elastic mechanism may be one or more of a leaf spring, a spring sheet, a spring and the like having an elastic structure.

Furthermore, the elastic mechanism is arranged and fixed on the groove, the seam, the platform and the combined structure of the left shell and the right shell of the grab handle.

Furthermore, the first excitation metal elastic sheet and the second excitation metal elastic sheet on the circuit board are respectively arranged on two sides of the circuit board, so that the first key and the second key are pressed and excited in opposite directions.

Furthermore, the circuit board comprises a flexible board and a hard board, the flexible board is connected with the external signal structure component of the surgical instrument, and the hard board is fixedly arranged in the circuit board mounting grooves of the left shell and the right shell of the grab handle.

Furthermore, the elastic mechanism is of a split structure, and the resilience of the first key and the resilience of the second key are respectively realized.

Furthermore, the elastic mechanism is of an integrated structure, and springback of the first key and the second key is achieved simultaneously.

Furthermore, a limiting boss is designed on the shell and/or the first key and/or the second key, so that the key is prevented from being damaged by overvoltage to cause structure damage.

Furthermore, a limit boss is designed on the shell and/or the first key and/or the second key, so that a certain gap is formed between the contact surface and the shell.

In another aspect, a method of operating an ultrasonic blade surgical instrument is provided. Specifically, a first key positioned in the front of the instrument is pressed and activated by an index finger, and second keys positioned on the oblique side surfaces of two sides of the instrument are pressed and activated by a thumb.

Furthermore, the second key can rotate around the rotating shaft, and the rotating stroke is 1-30 degrees.

By adopting the structure, the invention has the following beneficial effects:

firstly, the false triggering frequency of the index finger for switching the cutting function and the blood coagulation function is reduced;

secondly, the thumb shares the blood coagulation stimulating operation, so that the comfort level of the cutting key is improved, and the fatigue of the index finger is relieved;

and thirdly, the cutting key right in front and the blood coagulation key on the side inclined plane are both designed with a certain sliding stroke to be triggered, so that the operation comfort of a doctor is further improved, and the risk of mistaken touch is reduced.

Meanwhile, the side key stimulates the blood coagulation function and gives consideration to the use habits of the left hand and the right hand of a doctor, and the doctor skilled in the left hand operation and the right hand operation can conveniently use the instrument.

Drawings

The accompanying drawings are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application and not to limit the application.

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

FIG. 2 is a schematic view of an operational configuration of the ultrasonic surgical instrument;

FIG. 3 is a schematic view of an ultrasonic surgical instrument;

FIG. 4 is a functional diagram of keys of the ultrasonic surgical device;

FIG. 5 is a schematic view of an ultrasonic surgical instrument cutting key installation;

FIG. 6 is a schematic view of an installation of a coagulation button of the ultrasonic surgical device;

FIG. 7 is a schematic view of the circuit board and leaf spring mounting of the ultrasonic surgical instrument;

FIG. 8 is a schematic diagram of a circuit board structure of an ultrasonic surgical instrument.

Detailed Description

The present application is further described with reference to the following detailed description, wherein the drawings are for illustrative purposes only and are not intended to be limiting, and certain elements of the drawings are omitted, enlarged or reduced in size or not to represent the actual dimensions of the product, so that the detailed description of the application will be better understood, and it will be understood that certain well-known structures in the drawings and descriptions thereof may be omitted, based on the detailed description of the application, and all other detailed descriptions obtained by those skilled in the art without inventive faculty will fall within the scope of the protection of the present application.

An ultrasonic surgical instrument system is shown in fig. 1 and mainly comprises an ultrasonic frequency generator 1, a transducer 2 and a surgical instrument 3. Wherein, ultrasonic frequency generator 1 sends out the oscillating electric signal, and transducer 2 converts the oscillating electric signal into mechanical vibration, and surgical instruments 3 utilizes the mechanical vibration of transducer 2 to carry out the cutting and blood coagulation to the tissue.

As shown in fig. 2, the surgical instrument 3 includes: a turning wheel 4, a coagulation button 5, a grip 6, a cutting button 7, a trigger 8, a knife bar 31, a clamp 32, and a sleeve assembly 33. Wherein, the cutter arbor 31 and the clamp 32 that constitutes clamping structure realize ultrasonic cutting and blood coagulation, and sleeve pipe subassembly 33 plays and keeps apart with the outside, protects and supports the effect of cutter arbor 31, contains transmission system, trigger reset, electron device etc. in the grab handle 6. By grasping the trigger 8, the inner sleeve of the sleeve assembly 3 can be driven by the transmission assembly in the grip 6 to move, and the inner sleeve moves to close the clamp 32 and the cutter bar 31. Otherwise, the clamp opening action is realized. The rotation of the sleeve assembly 33, the cutter bar 31 and the clamp 32 is realized by the circumferential rotation of the rotating dial wheel 4, so that a doctor can conveniently adjust a proper cutting and coagulation angle.

The coagulation button 5 and the cutting button 7 are arranged as shown in fig. 2, the coagulation button 5 being located on the oblique side of the surgical instrument 3. The surgical instrument is held by hand, the thumb slightly tilts, and the blood coagulation key is pulled to realize the blood coagulation excitation function, wherein the stroke angle is 0-30 degrees, preferably 5-10 degrees. The cutting button 7 is located directly in front of the surgical instrument 3. The cutting excitation function can be realized by pressing the forefinger.

Fig. 3 shows the surgical device 3 and its internal structure, as shown, the surgical device 3 includes a rotary thumb wheel 4, a coagulation button 5, a cutting button 7, a trigger 8, and a grip 6, and an internal device leaf spring 61, a rotary pin 62, a circuit board 64, a slider 65, etc. are mounted to corresponding limit structures of a right housing 63 and a left housing 66 (hidden and visible in fig. 2) of the grip 6. The rotating pin 62 passes through the mounting holes of the coagulation key 5, the trigger 8 and the slider 65 at the same time, the key 5, the trigger 8 and the slider 65 are limited by the bosses of the right shell 63 and the left shell 66 respectively to move, but the coagulation key 5 is not influenced, the rotation of the trigger 8 is not influenced when the coagulation key 5 is excited by rotation, and the slider 65 is driven by the trigger 8 to slide, so that the closing of the clamp 32 and the cutter bar 31 is not influenced. Therefore, the parallel connection of the coagulation key 5, the trigger 8 and the slide block 65 is realized by rotating the position of the pin shaft 62, and the mutual noninterference of rotation or sliding is realized, so that the parts can be reduced, the structure is compact, the structure space is compressed, and the assembly process is simplified.

Fig. 4 shows a functional diagram of the keys of the surgical device 3, wherein the cutting key 7 and the coagulation key 5 are respectively located on two sides of the circuit board 64. As shown, the cut key 7 is mounted in the cut key mounting groove 631 of the right case 63, the leaf spring 61 is mounted in the leaf spring groove 632 of the right case 63, and the circuit board 64 is mounted in the circuit board mounting groove 633 of the right case 63. The coagulation button 5 is mounted to the right housing 63 via a rotating pin 62, and the rotating pin 62 is mounted in a pin mounting hole 634 of the right housing 63. When the thumb is pressed, the coagulation button 5 can be rotated about the rotation pin 62. When the index finger presses the cutting key 7, the elastic force on the left side of the leaf spring 61 is overcome, and then the circuit board 64 is pressed to realize cutting excitation; when the index finger releases the pressing force, the leaf spring 61 will bounce the cut button 7. When the blood coagulation key 5 is rotated, firstly, the elastic force on the right side of the leaf spring 61 is overcome, and then the circuit board 64 is pressed, so that blood coagulation excitation is realized; when the thumb releases the pressing force, the leaf spring 61 rebounds the coagulation button 5. It should be noted that the left casing 66 and the right casing 63 of the handle are nearly symmetrical structures, so as to realize the installation and fixation of the cutting key 7, the leaf spring 61, the circuit board 64, the blood coagulation key 5, and the like.

The structural mounting of the cutting key is schematically shown in fig. 5. The cutting key installation groove 631 shown in fig. 4 is composed of an upper guide stage 6311, a lower guide stage 6312, and a guide slide groove 6313 of fig. 5. When the index finger presses the index finger contact surface 71 of the cutting key 7, the guide boss 72 of the cutting key 7 slides in the guide sliding slot 6313 of the right housing 63, and the upper limit surface 74 and the lower limit surface 75 of the cutting key 7 are respectively constrained by the upper guide stage 6311 and the lower guide stage 6312 of the right housing 63, so that the skew of the cutting key 7 is reduced. When the cutting key 7 is pressed by the forefinger and slides for a certain distance, the cutting key elastic sheet touch surface 73 of the cutting key 7 touches the leaf spring 61, thereby increasing the hand feeling. When the cutting excitation boss 76 of the cutting key 7 touches the circuit board 64, cutting excitation is performed. In order to protect the circuit board 64 and the mounting and fixing structure thereof from being damaged by the forefinger overpressure, the stop block 6314 is designed on the right housing 63 to limit the maximum stroke of the cutting button 7. The left housing 66 of the handle 6 is correspondingly symmetrical.

The structural installation schematic diagram of the blood coagulation key is shown in fig. 6. The rotating pin 62 passes through the two mounting holes 51 and 52 of the blood coagulation key 5, two ends of the rotating pin are respectively mounted in the rotating pin hole 634 of the right casing 63 and the rotating pin hole 662 of the left casing, the limiting surface 55 of the blood coagulation key 5 is limited by the limiting plane 631 of the right casing 63, and the corresponding left casing 66 is also provided with a symmetrical structure, so that the blood coagulation key 5 can only rotate around the rotating pin 62. The lower limit boss of the blood coagulation key 5 and the upper limit boss 632 of the right shell 63 limit the rotation angle of the blood coagulation key, and ensure that the thumb contact surface 55 of the blood coagulation key 5 does not touch the limit groove 661 of the left shell 66, and the corresponding right shell 63 is also in a symmetrical structure. When the thumb presses the thumb contact surface 55 of the blood coagulation key 5, the blood coagulation excitation boss 53 on the blood coagulation key 5 rotates and finally touches the circuit board 64, so that blood coagulation excitation is realized.

The installation schematic diagram of the circuit board 64 and the leaf spring 61 is shown in fig. 7, and the circuit board 64 and the leaf spring 61 are sequentially installed in the corresponding circuit board installation groove 633 and the leaf spring groove 632 according to the black arrow direction shown in the figure, so as to obtain the structural schematic diagram on the right side of fig. 7, where the circuit board installation groove 633 is a rectangular groove similar to the cross-sectional shape of the circuit board 64. The leaf spring slot 632 is composed of a leaf spring slot first upper boss 6321, a leaf spring slot second upper boss 6322 and a leaf spring slot lower boss 6323, and the elastic leaf spring 61 is fixed in the relative gap by dislocation arrangement. The leaf spring 61 is inserted into the leaf spring slot 632 and stops when the leaf spring longitudinal stop 613 touches the leaf spring stop 6324, thereby limiting the position of the cutting excitation boss slot 611 and the coagulation excitation boss slot 612 on the leaf spring 61. The cutting excitation boss 76 of the cutting button 7 passes through the cutting excitation boss groove 611, and the coagulation excitation boss 53 of the coagulation button 5 passes through the coagulation excitation boss groove 612. As shown in fig. 7, the leaf spring 61 may be divided into three parts, a leaf spring cutting resil plate 614, a leaf spring coagulation resil plate 615, and a leaf spring fixing plate 616. The first convex hull 6141 of the leaf spring cutting elastic reflecting plate 614 is contacted with the cutting key elastic sheet contact surface 73 of the cutting key 7, the second convex hull 6151 of the leaf spring coagulation elastic reflecting plate 615 is contacted with the coagulation key elastic sheet contact surface 57 of the coagulation key 5, and the leaf spring fixing plate 616 is limited in the leaf spring groove 632.

The structure of the circuit board 64 is shown in fig. 8. The circuit board 64 is formed by combining a flexible board 643 and a hard board 644, wherein the flexible board 643 is connected to the interface assembly 67 of fig. 3, and the interface assembly 67 of fig. 3 is connected to the transducer 2 of fig. 1, and is finally connected to the ultrasonic frequency generator 1 of fig. 1. When the cutting button 7 and the metal elastic sheet 641 or the blood coagulation button and the metal elastic sheet 642 are excited, the ultrasonic frequency generator controls the mechanical vibration of the cutter bar 31 to realize the cutting and blood coagulation functions. By adopting a compact double-sided mounting mode, the cutting key metal elastic sheet 641 is arranged on the front side surface of the hard board 644, and the coagulation key metal elastic sheet 642 is arranged on the rear side surface of the hard board 644, so that the mounting space can be saved, and meanwhile, the key excitation in two directions is met. When the cutting excitation boss 76 of the cutting key 7 presses the cutting key metal elastic sheet 641 for a certain stroke, cutting excitation is realized; after the excitation is completed, the cutting excitation boss 76 of the cutting key 7 is separated from the cutting key metal dome 641, and the cutting excitation is turned off. Similarly, after the blood coagulation excitation boss 53 of the blood coagulation key 5 presses the metal spring 642 of the blood coagulation key for a certain stroke, the blood coagulation excitation is realized; after the excitation is finished, the blood coagulation excitation boss 53 of the blood coagulation key 5 is separated from the metal spring 642 of the blood coagulation key, and the blood coagulation excitation is closed.

It should be noted that the embodiments shown in the drawings are merely representative examples of the present invention, and those skilled in the art will readily understand that the scope of the present invention is not limited to the embodiments shown in the drawings, and that combinations, modifications and variations of the embodiments shown in the drawings fall within the scope of the present invention.

The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention, and it is not to be construed as limiting the scope of the present invention, therefore, the present invention is not limited by the appended claims.

Claims

1. An ultrasonic surgical instrument comprises a cutter bar, a first key, a second key, a grab handle, a transmission mechanism and other internal structures, and is characterized in that the first key is positioned right in front of the instrument, the second key is positioned on the oblique side face of the instrument, and the first key and/or the second key can slide or rotate in a certain stroke.

2. The ultrasonic surgical instrument of claim 1, wherein the first key is a cut key and the second key is a coagulation key.

3. The ultrasonic surgical instrument of claim 1 or 2, wherein the second keys are symmetrically arranged on the two side slopes of the instrument.

4. The ultrasonic surgical device according to claim 1 or 2, wherein the first button and/or the second button rotates around a rotation pin shaft, the rotation pin shaft passes through the first button and/or the second button mounting hole, and both ends of the rotation pin shaft are respectively mounted on rotation pin shaft holes of the left and right housings of the handle.

5. The ultrasonic surgical instrument of claim 4, wherein the rotating pin passes through the transmission mechanism to connect the second button in parallel with the transmission mechanism.

6. The ultrasonic surgical device of claim 1 or 2, wherein the limit surface of the second key is limited by a limit plane of the housing of the handle, such that the second key can only rotate around the rotation pin.

7. The ultrasonic surgical device of claim 1 or 2, wherein a circuit board is disposed in the handle, and the first key and the second key are activated by pressing the circuit board.

8. The ultrasonic surgical instrument of claim 7, wherein a resilient mechanism is disposed between the first and second keys and the circuit board.

9. The ultrasonic surgical device of claim 8, wherein the resilient means is mounted in a slot, platform, or combination thereof fixed to the left and right housings of the handle.

10. The ultrasonic surgical instrument according to claim 1 or 2, wherein the first key is disposed in a mounting groove, the mounting groove is composed of a guide sliding groove, an upper guide table and a lower guide table, and the guide boss of the first key slides in the guide sliding groove.

11. The ultrasonic surgical instrument of claim 7, wherein the circuit board has a first excitation metal spring and a second excitation metal spring, which are respectively mounted on two sides of the circuit board to realize the opposite pressing excitation of the first button and the second button.

12. The ultrasonic surgical device of claim 7, wherein the circuit board is comprised of a flexible board and a rigid board, the flexible board is connected to the external signal structure assembly of the surgical device, and the rigid board is fixedly mounted to the circuit board mounting slots of the left and right housings of the handle.

13. The ultrasonic surgical instrument of claim 8, wherein the resilient mechanism is a split structure that enables the first key to rebound and the second key to rebound, respectively.

14. The ultrasonic surgical instrument of claim 8, wherein the resilient mechanism is a unitary structure that simultaneously enables the spring back of the first key and the second key.

15. The ultrasonic surgical device of claim 4, wherein a limiting boss is designed on the shell of the handle and/or the first key and/or the second key to prevent the keys from being damaged by overpressure.

16. The ultrasonic surgical device of claim 4, wherein a limiting boss is designed on the housing of the handle and/or the first key and/or the second key, so that a certain gap is formed between the contact surface and the housing.