CN221671846U - Hollow working tip with tooth grooves - Google Patents

Abstract

The utility model discloses a hollow working tip with teeth and grooves, belonging to the technical field of ultrasonic aspirators. The hollow working tip comprises a connecting portion, a waveguide portion and a tip which are arranged in sequence, the connecting portion is connected to the amplitude rod of the ultrasonic transducer, a plurality of teeth and grooves are arranged at the end of the tip away from the waveguide portion, and the inclined surfaces on both sides of the teeth and grooves are planes or curved surfaces. The hollow working tip of the utility model is structurally optimized at the end of the tip away from the waveguide portion, and a plurality of teeth and grooves are arranged at the end of the tip. The inclined surfaces on the left and right sides of each group of teeth and grooves change the transmission direction of ultrasonic energy due to ultrasonic refraction. The inclined surfaces on both sides make the ultrasonic energy generate a group of intersecting ultrasonic energy at the front end of the teeth and grooves, forming a shearing effect. The overall plurality of pairs of teeth and grooves will generate a ring array shearing effect at the front end of the hollow working tip, which effectively improves the efficiency of tissue cutting, thereby improving the efficiency of surgery.

Description

A hollow working tip with tooth grooves

Technical Field

The utility model relates to the technical field of ultrasonic aspirators, in particular to a hollow working tip with tooth grooves.

Background Art

Since the birth of surgical medicine, safer, more efficient, more convenient and minimally invasive surgical instruments have always been a strong demand of society. Currently, the commonly used traditional non-edge surgical instruments have problems such as small operating space, low cutting accuracy, large surgical wound, slow postoperative recovery, easy damage to adjacent tissues, and easy complications. Some active surgical instruments often cause tissue burns and damage to adjacent tissues, while ultrasonic aspirators can effectively reduce or even avoid these problems. Ultrasonic aspirators are surgical instruments that use the cavitation effect and mechanical effect generated by ultrasonic vibration energy to remove biological soft tissues. Due to their many advantages such as less trauma, less bleeding, selective tissue removal, and strong operability, ultrasonic aspirators are widely used in general surgery, hepatobiliary surgery, neurosurgery and other surgical fields, such as hepatobiliary surgery, tumor resection, etc.

The overall structure of a traditional ultrasonic aspirator includes an ultrasonic aspirator handle, a control system, and an injection system, and the ultrasonic aspirator handle is mainly composed of an ultrasonic transducer and a hollow working tip. Among them, the ultrasonic transducer is the core part of the entire ultrasonic aspirator, and the hollow working tip is the key part for transmitting ultrasonic energy to the tissue. The ultrasonic aspirator is the same as general ultrasonic surgical equipment. A hollow working tip is installed at the front end of the ultrasonic transducer. Through the inverse piezoelectric effect of piezoelectric ceramics, the electrical signal of the ultrasonic frequency is converted into mechanical vibration of the ultrasonic frequency, and the resonance principle is used to drive the central control hollow working tip installed at the front end of the transducer to perform ultrasonic vibration.

The hollow working tip of the existing ultrasonic aspirator is relatively long. When performing soft tissue surgery on the human body, if the working position is too deep, the front end of the hollow working tip will encounter relatively large resistance. In addition, since the soft tissue of the human body has a certain elasticity, it is very likely to adhere to the hollow working tip when the hollow working tip is working.

Utility Model Content

In order to solve the deficiencies in the prior art, the utility model provides a hollow working tip with teeth grooves. The hollow working tip has a structurally optimized design at the end of the tip away from the waveguide portion. A plurality of teeth grooves are arranged at the end of the tip. The inclined surfaces on the left and right sides of each tooth groove change the transmission direction of ultrasonic energy due to ultrasonic refraction. The inclined surfaces on both sides cause the ultrasonic energy to generate a group of intersecting ultrasonic energies at the front end of the tooth groove, forming a shearing effect. The overall multiple pairs of tooth grooves will produce a ring-shaped array shearing effect at the front end of the hollow working tip. This effect effectively improves tissue cutting efficiency, thereby improving surgical efficiency.

In order to achieve the above-mentioned purpose, the utility model is realized through the following technical solutions:

A hollow working tip with teeth and grooves comprises a connecting part, a waveguide part and a tip which are arranged in sequence. The connecting part is connected to the horn of an ultrasonic transducer, and a plurality of teeth and grooves are arranged at the end of the tip away from the waveguide part.

The inclined surfaces on both sides of the tooth groove are flat surfaces or curved surfaces.

The tooth grooves are "V-shaped" grooves or/and trapezoidal grooves or/and arc grooves. The tooth grooves can all be set to grooves of the same shape, such as all set to "V-shaped" grooves or all set to trapezoidal grooves or all set to arc grooves, or can be set to a combination of different shapes, such as a combination of "V-shaped" grooves and trapezoidal grooves, a combination of "V-shaped" grooves and arc grooves, a combination of "V-shaped" grooves, trapezoidal grooves and arc grooves.

The number of the tooth grooves is multiple and evenly distributed along the circumference of the tip. Exemplarily, the number of the tooth grooves is 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, or 12.

The tooth grooves are arranged in pairs, and the two tooth grooves in a pair of tooth grooves are symmetrically distributed with the central axis of the tip as the center. Exemplarily, the tooth grooves are 2 pairs, 3 pairs, or 4 pairs.

The angle between the two inclined surfaces of the tooth groove is 90° to 180°. Exemplarily, the angle between the two inclined surfaces of the tooth groove is 90°, 100°, 110°, 120°, 130°, 140°, 150°, 160°, or 170°.

The width W of the tooth groove satisfies Formula 1, and the depth H of the tooth groove satisfies Formula 2:

Wherein, W is the width of the tooth groove, H is the depth of the tooth groove, r is the inner diameter of the tip, n is the number of tooth grooves, and θ is the angle between the two inclined surfaces of the tooth groove.

The connection between the connection part and the waveguide part, the connection between the waveguide part and the tip, and the cross-section change point of the waveguide part are all provided with rounded corners.

The outer diameter of the tip gradually decreases from one end of the waveguide portion to an end away from the waveguide portion.

The outer diameter of the tip is 2 mm to 3 mm, the wall thickness of the tip is 0.4 mm to 0.6 mm, and the length of the tip is 25 mm to 45 mm. Exemplarily, the outer diameter of the tip is 2.5 mm, the wall thickness of the tip is 0.5 mm, and the length of the tip is 35 mm.

The tip is a tubular structure, which may be a circular tube, an elliptical tube, or the like.

Compared with the prior art, the utility model has the following beneficial effects:

The utility model provides a hollow working tip with teeth grooves. Compared with the common hollow working tips in the prior art, the hollow working tip has a structurally optimized design at the end of the tip away from the waveguide part. A plurality of teeth grooves are arranged at the end of the tip. The inclined surfaces on both sides of the teeth grooves change the transmission direction of ultrasonic energy due to ultrasonic refraction. The inclined surfaces on both sides make the ultrasonic energy generate a group of intersecting ultrasonic energies at the front end of the teeth grooves to form a shearing effect. The overall multiple pairs of teeth grooves will generate a ring array shearing effect at the front end of the hollow working tip. This effect effectively improves the tissue cutting efficiency, thereby improving the surgical efficiency.

BRIEF DESCRIPTION OF THE DRAWINGS

Figure 1 is a schematic diagram of the structure of the ultrasonic aspirator of the present invention.

Figure 2 is a schematic diagram of the planar structure of the hollow working tip of the utility model.

FIG3 is a schematic diagram of the three-dimensional structure of the hollow working tip of the utility model.

FIG4 is a schematic structural diagram of the tip of the hollow working tip of the utility model.

FIG5 is a schematic diagram of the three-dimensional structure of the tooth groove at the tip of the hollow working tip of the utility model.

FIG6 is a schematic diagram of the planar structure of the tooth groove at the tip of the hollow working tip of the utility model.

FIG. 7 is a schematic diagram of ultrasonic refraction of the two inclined surfaces of the tip of the hollow working tip of the utility model.

FIG8 is a schematic structural diagram of the ultrasonic energy direction of the utility model.

DETAILED DESCRIPTION

The utility model is further described in conjunction with the accompanying drawings and specific embodiments. It should be understood that these embodiments are only used to illustrate the utility model and are not used to limit the scope of the utility model. In addition, it should be understood that after reading the content taught by the utility model, those skilled in the art can make various changes or modifications to the utility model, and these equivalent forms also fall within the scope defined by the present application.

As shown in FIG. 1 , the utility model provides a hollow working tip with teeth and grooves, comprising a connecting portion 1, a waveguide portion 2 and a tip 3 which are sequentially arranged, wherein the connecting portion 1 is connected to the horn 5 of the ultrasonic transducer 4, and a plurality of teeth and grooves 6 are arranged at the end of the tip 3 away from the waveguide portion 2. The utility model arranges a plurality of teeth and grooves 6 at the end of the tip 3 away from the waveguide portion 2, and the inclined surfaces on both sides of the teeth and grooves 6 change the transmission direction of the ultrasonic energy due to ultrasonic refraction (as shown in FIG. 6 ), and the inclined surfaces on both sides make the ultrasonic energy generate a group of intersecting ultrasonic energies at the front end of the teeth and grooves, forming a shearing effect, and the overall plurality of pairs of teeth and grooves will generate a ring array shearing effect at the front end of the hollow working tip, which effectively improves the tissue cutting efficiency, thereby improving the surgical efficiency.

When the utility model is in use, the connecting portion 1 of the hollow working tip is connected to the horn 5 of the ultrasonic transducer 4, generally using a threaded connection, and is provided with a flat position for use with a clamp. When the ultrasonic aspirator is working, the electromechanical conversion component 7 receives a high-frequency voltage signal and generates ultrasonic vibration. The ultrasonic transducer 4 transmits ultrasonic energy to one end of the hollow working tip, and the ultrasonic energy is concentrated by the horn 5 and then transmitted to the hollow working tip; the waveguide portion 2 is used to conduct ultrasonic energy to the tip 3, and further concentrate the ultrasonic energy in a smaller cross-sectional area (as shown in FIG. 7 ), so that a sufficiently large amplitude is generated at the tip 3, and biological soft tissue is removed in a desired vibration mode.

Furthermore, the inclined surfaces 61 on both sides of the tooth groove 6 are planes or curved surfaces. When a plurality of tooth grooves 6 are provided, the inclined surfaces 61 on both sides of the tooth groove 6 can be both planes, or both curved surfaces, or a combination of a partly plane and a partly curved surface, and the curved surface can be a concave arc structure sunken toward the inside of the inclined surface 61, or a curved structure convex toward the outside of the inclined surface 61.

Further, the tooth grooves 6 are "V-shaped" grooves or/and trapezoidal grooves or/and arc grooves. The tooth grooves 6 can all be set to grooves of the same shape, such as all set to "V-shaped" grooves or all set to trapezoidal grooves or all set to arc grooves, or can be set to a combination of different shapes, such as a combination of "V-shaped" grooves and trapezoidal grooves, a combination of "V-shaped" grooves and arc grooves, a combination of "V-shaped" grooves, trapezoidal grooves and arc grooves.

Further, the number of the tooth grooves 6 is multiple and evenly distributed along the circumferential direction of the tip 3. Exemplarily, the number of the tooth grooves 6 is 4, 5, 6, 7, 8, 9, 10, 11, or 12.

Furthermore, the tooth grooves 6 are arranged in pairs, and the two tooth grooves 6 in a pair of tooth grooves 6 are symmetrically distributed with the central axis of the tip 3 as the center.

Further, the number of the tooth grooves 6 is 1 to 6. Exemplarily, the number of the tooth grooves 6 is 1 pair, 2 pairs, 3 pairs, 4 pairs, 5 pairs, or 6 pairs.

Furthermore, the angle between the two inclined surfaces of the tooth groove 6 is 90° to 180°.

Furthermore, the width W of the tooth groove satisfies Formula 1, and the depth H of the tooth groove satisfies Formula 2:

Wherein, W is the width of the tooth groove, H is the depth of the tooth groove, r is the inner diameter of the tip, n is the number of tooth grooves, and θ is the angle between the two inclined surfaces of the tooth groove.

If the inner diameter r of the tip is 2 mm, the number n of the tooth grooves is 6, and the angle θ between the two inclined surfaces of the tooth groove is 120°, then the width W of the tooth groove is 1 mm, and the depth H of the tooth groove is 0.29 mm.

Furthermore, the connection between the connection part 1 and the waveguide part 2, the connection between the waveguide part 2 and the tip 3, and the cross-sectional change of the waveguide part 2 are all provided with rounded corners to reduce the occurrence of stress concentration.

Furthermore, the outer diameter of the tip 3 gradually decreases from one end of the waveguide portion 2 to the end away from the waveguide portion 2 .

Furthermore, the outer diameter of the tip 3 is 2 mm to 3 mm, the wall thickness of the tip 3 is 0.4 mm to 0.6 mm, and the length of the tip 3 is 25 mm to 45 mm. Exemplarily, the outer diameter of the tip 3 is 2.5 mm, the wall thickness of the tip 3 is 0.5 mm, and the length of the tip 3 is 35 mm. The outer diameter setting of the tip 3 can meet the requirements of medical operations in most scenarios, and the length setting of the tip 3 can penetrate into the human body and contact the target tissue and organ. Exemplarily, the minimum outer diameter of the tip 3 is 2.5 mm, the wall thickness of the tip 3 is 0.5 mm, the length of the tip 3 is 35 mm, and the length of the hollow working tip is about 120 mm. The characteristic frequency of the hollow working tip is about 55 kHz.

The hollow working tip of the utility model is also suitable for an ultrasonic transducer in a double-frequency superposition form.

Furthermore, the tip is a tubular structure, which may be a circular tubular structure, an elliptical tubular structure, etc., preferably a circular tubular structure.

Furthermore, the hollow working tip in the present invention is made of stainless steel or titanium alloy.

In order to focus the ultrasonic energy, the hollow working tip can adopt a double-conical structure design, and can also adopt an exponential-conical type, a cone-exponential type, a double-exponential type, etc. according to the length requirements of the working tip while ensuring sufficient strength.

Claims (10)

1. The hollow working tip is characterized in that the tip is provided with a plurality of tooth grooves at the end part far away from the waveguide part.

2. The hollow tip with tooth spaces as claimed in claim 1, wherein the inclined surfaces of both sides of said tooth spaces are flat or curved.

3. A hollow tip provided with tooth spaces as claimed in claim 1, wherein said tooth spaces are V-shaped grooves or/and trapezoidal grooves or/and arc grooves.

4. The hollow tip provided with tooth spaces as claimed in claim 1, wherein the tooth spaces are plural and uniformly distributed along the circumferential direction of the tip.

5. The hollow tip with tooth spaces as claimed in claim 1, wherein the number of tooth spaces is 2 to 12.

6. A hollow tip provided with tooth spaces as claimed in claim 1, wherein the angle between two inclined surfaces of said tooth spaces is 90 ° to 180 °.

7. The hollow tip provided with tooth spaces according to claim 1, wherein the width W of the tooth spaces satisfies formula 1 and the depth H of the tooth spaces satisfies formula 2:

Wherein W is the width of the tooth slot, H is the depth of the tooth slot, r is the inner diameter of the tip, n is the number of tooth slots, and θ is the included angle between two inclined planes of the tooth slot.

8. The hollow tip with tooth slots according to claim 1, wherein rounded corners are arranged at the connection part of the connecting part and the waveguide part, the connection part of the waveguide part and the tip, and the section change part of the waveguide part.

9. The cogged hollow tip of claim 1, wherein the outer diameter of the tip decreases from one end of the waveguide section to the end remote from the waveguide section.

10. The hollow tip with tooth slots according to claim 1, wherein the outer diameter of the tip is 2 mm to 3mm, the wall thickness of the tip is 0.4 mm to 0.6 mm, and the length of the tip is 25 mm to 45 mm.