CN215079328U

CN215079328U - Ultrasonic knife-shearing amplitude transformer

Info

Publication number: CN215079328U
Application number: CN202120379206.5U
Authority: CN
Inventors: 陆磊
Original assignee: Jiangsu Baining Yingchuang Medical Technology Co ltd
Current assignee: Jiangsu Baining Yingchuang Medical Technology Co ltd
Priority date: 2021-02-20
Filing date: 2021-02-20
Publication date: 2021-12-10
Anticipated expiration: 2031-02-20

Abstract

The utility model provides an ultrasonic knife cuts formula amplitude transformer, it is continuous by tool bit portion, adjustable structure and sword tail part in proper order and constitutes characterized by: the cutter head part is connected with one end of the adjustable structure through the frequency modulation step, and the other end of the adjustable structure is connected with the cutter tail part through the near-end gain step; the cutter head part consists of a cutter bar elbow, a first balancing rod and a second balancing rod, the cutter bar elbow is connected with one end of the first balancing rod through a far-end gain step), the other end of the first balancing rod is connected with one end of the second balancing rod, the other end of the second balancing rod is connected with a frequency modulation step, and the first balancing rod and the second balancing rod are respectively provided with a groove-shaped balancing characteristic structure; the connection part of the first balance rod and the second balance rod is wrapped with a rubber coating contact. The utility model discloses application scope is wide, the field of vision is good, can touch deeper position focus, and its potential resonant frequency is few, and effective cutting direction has great amplitude.

Description

Ultrasonic knife-shearing amplitude transformer

Technical Field

The utility model relates to a medical appliance, in particular to an ultrasonic knife, in particular to a shear type amplitude transformer.

Background

Ultrasonic knives have been used for over 20 years in large scale and have many advantages over other surgical knives: less smoke is generated, the operation visual field is clear, the thermal injury is small, the tissue cutting, coagulating and separating effects are realized, and the risk of electrical injury is avoided. The general ultrasonic knife has two types of open surgery and endoscopic surgery, and different types of knife heads with different lengths are used according to different surgeries.

In some open surgeries, a scissors-type ultrasonic knife is used, which is suitable for some open surgeries such as thyroid gland open surgery, breast gland open surgery and the like due to the structural characteristics of the scissors-type ultrasonic knife. The disease focus position of a patient is complex, some disease focus positions of the patient are deep, the traditional ultrasonic surgical knife can not reach the disease focus position due to the short length of the cutting knife head, or a doctor enlarges the position of a surgical wound, so that the pain of the patient can be increased. Some scalpels have the length meeting the requirement, but are heavy, or have poor vision field effect, unsatisfactory cutting hemostasis effect and the like, which brings much trouble and trouble to the operation of doctors and the operation effect of patients.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problems that the length and the function of the existing ultrasonic scalpel head are not matched and the operation effect is influenced, and designing the ultrasonic scalpel type amplitude transformer which has wide application range, good visual field and can touch the focus at deeper parts. .

The technical scheme of the utility model is that:

the utility model provides an ultrasonic sword formula of cutting becomes width of cloth pole, it is connected by sword head portion 9, adjustable structure 4 and sword tail portion 10 in proper order and constitutes, sword tail portion 10 is used for being connected with the transducer, characterized by: the cutter head part 9 is connected with one end of the adjustable structure 4 through the frequency modulation step 3, and the other end of the adjustable structure 4 is connected with the cutter tail part through the near-end gain step 5; the tool bit part 9 consists of a tool bar elbow 1, a first balance rod 11 and a second balance rod 12, the tool bar elbow 1 is connected with one end of the first balance rod 11 through a far-end gain step 2, the other end of the first balance rod 11 is connected with one end of the second balance rod 12, the other end of the second balance rod 12 is connected with a frequency modulation step 3, the first balance rod 11 and the second balance rod 12 are respectively provided with a groove-shaped balance characteristic structure 6, the two groove-shaped balance characteristic structures 6 are parallel in space, and the opening directions are opposite; the connection part of the first balance bar 11 and the second balance bar 12 is wrapped with the rubber coating contact 8.

The length of the adjustable structure 4 is integral multiple of the system wavelength (n lambda/2), and the size of the cross section of the adjustable structure can change required parameters. I.e. the cross-sectional area is adjusted according to the amplitude required by the output of the tool holder.

The blade tail portion 10 is provided with a fixing hole 7 to facilitate the connection of the transducer.

The groove-shaped balance characteristic structure 6 is provided with a side wall which is vertical to the length direction axis of the amplitude transformer, and the bottom notch and the longitudinal axis of the amplitude transformer form an isogonal line; the high stresses experienced during use at the notch-like balance features, the more sensitive bending regions away from the blade tip, minimize unwanted tip excursions in the y and z axes when the blade tip vibrates, thereby maximizing efficiency and improving tissue cutting performance.

The included angle theta of the two side walls of the groove-shaped balance characteristic structure 6 is 1-90 degrees.

The included angle theta is 19-21 degrees.

The utility model has the advantages that:

1. the length of a 9cm cutter rod used in the prior surgical operation is changed, and the cutter rod is increased by 4cm or longer. So that the effective surgical cutting can be carried out at the position which is difficult to be reached by the cutter head in the prior art.

2. According to the design structure, the length can be adjusted to be suitable for the length of the cutter bar required by different operations.

3. This structure has superior cutting effect, and cutting speed obviously promotes, and cutting effect is good, saves the time of operation.

The utility model discloses application scope is wide, the field of vision is good, can touch deeper position focus, and its potential resonant frequency is few, and effective cutting direction has great amplitude. The cutter head is curved, the radian is large, a better operation visual field can be provided, and the section of the cutter head is circular, so that blood coagulation can be cut in all directions. The blade diameter tapers in the cutting direction from the proximal end to the distal end. The arc grooving part of the elbow part can perform effective rapid cutting without being clamped. The whole amplitude transformer is provided with two gain steps, the others are of a maintaining structure, the near end is a small gain step, and the far end is a large gain step.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is an enlarged schematic (partial) plan view of fig. 1.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and examples.

As shown in fig. 1-2.

An ultrasonic knife-shear type amplitude transformer is sequentially formed by connecting a knife head part 9, an adjustable structure 4 and a knife tail part 10, wherein the length of the adjustable structure 4 is integral multiple of the system wavelength (n lambda/2), the knife tail part 10 is provided with a fixing hole 7 so as to be connected with an energy converter, the knife head part 9 is connected with one end of the adjustable structure 4 through a frequency modulation step 3, and the other end of the adjustable structure 4 is connected with the knife tail part through a near-end gain step 5; the tool bit part 9 consists of a tool bar elbow 1, a first balance rod 11 and a second balance rod 12, the tool bar elbow 1 is connected with one end of the first balance rod 11 through a far-end gain step 2, the other end of the first balance rod 11 is connected with one end of the second balance rod 12, the other end of the second balance rod 12 is connected with a frequency modulation step 3, the first balance rod 11 and the second balance rod 12 are respectively provided with a groove-shaped balance characteristic structure 6, the two groove-shaped balance characteristic structures 6 are parallel in space, and the opening directions are opposite; the encapsulated contact 8 is wrapped at the joint of the first balance bar 11 and the second balance bar 12, as shown in fig. 1. The groove-shaped balance characteristic structure 6 is provided with a side wall which is vertical to the length direction axis of the amplitude transformer, and the bottom notch and the longitudinal axis of the amplitude transformer form an isogonal line; the high stresses experienced during use at the notch-like balance features, the more sensitive bending regions away from the blade tip, minimize unwanted tip excursions in the y and z axes when the blade tip vibrates, thereby maximizing efficiency and improving tissue cutting performance. The included angle theta between the two side walls of the groove-shaped balance feature 6 is 1-90 degrees, and the optimal angle is 19-21 degrees, as shown in fig. 2.

The details are as follows:

the utility model discloses an adjustable structure 4 of amplitude transformer can adjust whole length and diameter, and its length is the integral multiple of system wavelength (n lambda/2). Meanwhile, the required parameters can be changed by adjusting the size of the cross section, namely the cross section area is adjusted according to the amplitude required by the output of the cutter bar.

The horn tail section is also provided with at least one radial fixing hole 7, the radial fixing hole 7 extending therethrough substantially perpendicular to the longitudinal axis of the horn. The fixing hole 7 may be a "connector" positioned on the node, and a threaded hole is opened at the tail portion and connected with the transducer by a screw.

The blade head portion may be integral with the adjustable structure 4 of the horn and formed as a single unit. The distal end of the blade portion is arranged near the frequency step 3 in order to tune the acoustic assembly to the preferred resonance frequency fo when the acoustic assembly is not loaded by tissue. When the ultrasonic transducer is energized, the distal end of the blade portion moves substantially longitudinally (along the x-axis) approximately within a distance range of 10 to 500 microns. A peak at a predetermined vibration frequency f0 of, for example, 55,500Hz, and preferably in the range of about 20 to about 200 microns. The blade tip vibrates in the y-axis at about one percent to about ten percent of the motion in the x-axis.

The blade tip may be designed with an asymmetrical or curved configuration to improve the surgical field at the tip of the cutting head so that the surgeon may better extend the cutting head deeper for cutting or coagulation. Especially for occluding large blood vessels. The geometry of the elbow portion may also provide improved tissue access by more closely replicating the curvature of the biological structure. The cutting head can also be designed with a variety of edges and surfaces intended to provide a variety of tissue cutting effects: coagulation, clamp cutting, grasping, posterior cutting, dissection, spot coagulation, tip penetration, and dexterity, among others.

The groove-like balance feature 6 provides one or more balance asymmetry features, the balance feature 6 has a sidewall that is perpendicular to the lengthwise axis of the horn, and the undercut is equiangular to the longitudinal axis of the horn. The high stresses experienced during use at the balancing feature 6, and the more sensitive bending regions away from the blade tip, minimize unwanted tip excursions in the y and z axes when the blade tip vibrates, thereby maximizing efficiency and improving tissue cutting.

The distal and proximal sides of the encapsulated node 8 are each provided with a balancing feature 6. The sidewalls of the proximal balancing features 6 are angled relative to each other in the xz-plane and provide individual balancing in bending mode. The included angle is an angle θ of between about 1 ° to about 90 °, preferably between about 19 ° to about 21 °. The distal balance feature 6 cut allows for balance and improved acoustic performance due to the wide frequency separation of the transverse mode from the fundamental frequency (i.e., longitudinal mode frequency). Any combination of distal and proximal ends of the balancing feature 6 may provide balancing between the adjustable structure 4 and the blade portion.

The utility model discloses the part that does not relate to all is the same with prior art or can adopt prior art to realize.

Claims

1. The utility model provides an ultrasonic knife cuts formula amplitude transformer, it is continuous by tool bit portion (9), adjustable structure (4) and sword tail portion (10) in proper order and constitutes, sword tail portion (10) are used for being connected with the transducer, characterized by: the cutter head part (9) is connected with one end of the adjustable structure (4) through the frequency modulation step (3), and the other end of the adjustable structure (4) is connected with the cutter tail part through the near-end gain step (5); the cutter head part (9) consists of a cutter bar elbow (1), a first balance rod (11) and a second balance rod (12), the cutter bar elbow (1) is connected with one end of the first balance rod (11) through a far-end gain step (2), the other end of the first balance rod (11) is connected with one end of the second balance rod (12), the other end of the second balance rod (12) is connected with a frequency modulation step (3), the first balance rod (11) and the second balance rod (12) are respectively provided with a groove-shaped balance characteristic structure (6), the two groove-shaped balance characteristic structures (6) are in parallel in space, and the opening directions are opposite; the connection part of the first balance bar (11) and the second balance bar (12) is wrapped with a rubber coating contact (8).

2. The ultrasonic knife-shear horn of claim 1 wherein: the length of the adjustable structure (4) is integral multiple of the system wavelength n lambda/2.

3. The ultrasonic knife-shear horn of claim 1 wherein: the cutter tail part (10) is provided with a fixing hole (7) so as to facilitate the connection of the transducer.

4. The ultrasonic knife-shear horn of claim 1 wherein: the groove-shaped balance characteristic structure (6) is provided with a side wall which is vertical to the length direction axis of the amplitude transformer, and the bottom notch and the longitudinal axis of the amplitude transformer form an isogonal line; the high stresses experienced during use at the notch-like balance features, the more sensitive bending regions away from the blade tip, minimize unwanted tip excursions in the y and z axes when the blade tip vibrates, thereby maximizing efficiency and improving tissue cutting performance.

5. The ultrasonic knife-shear horn of claim 1 wherein: the included angle theta of the two side walls of the groove-shaped balance characteristic structure (6) is 1-90 degrees.

6. The ultrasonic knife-shear horn of claim 5 wherein: the included angle theta is 19-21 degrees.