CN211187452U

CN211187452U - Ultrasonic surgical knife and surgical instrument

Info

Publication number: CN211187452U
Application number: CN201921453500.5U
Authority: CN
Inventors: 许博; 朱春强; 吴理杰; 张凯茜; 朱俊宇; 张凯琪; 吴增成; 郭博元
Original assignee: Taihui Shandong Medical Technology Co ltd; Taihui Beijing Medical Technology Co ltd
Current assignee: Taihui Shandong Medical Technology Co ltd; Taihui Beijing Medical Technology Co ltd
Priority date: 2019-09-03
Filing date: 2019-09-03
Publication date: 2020-08-07
Anticipated expiration: 2029-09-03

Abstract

The embodiment of the application discloses an ultrasonic surgical knife and a surgical instrument. The ultrasonic surgical tool comprises an outer tube, an inner tube, a cutter bar and a pin, wherein the outer tube, the inner tube and the cutter bar are respectively provided with a pin hole, the pin penetrates through the pin holes, two ends of the pin are respectively provided with a boss, and a protective layer is arranged between the two bosses; the contact form of the boss and the protective layer with the pin hole is surface contact, and the shape of the pin hole is matched with that of the pin. This application embodiment can be so that the surface of boss and the surface of protective layer respectively with the contact form of pinhole for the face contact, increase the atress intensity of pin to when the pin drives outer tube, inner tube and cutter arbor and rotates, can increase the area of contact of pin and pinhole, the fracture that the too big lead to of pin atress when avoiding rotatory, and or the fracture of ultrasonic cutter during operation cutter arbor improves the security of operation. And through setting up the protective layer, can reduce ultrasonic energy and cause the ultrasonic energy loss through pin coupling to inner tube or outer tube.

Description

Ultrasonic surgical knife and surgical instrument

Technical Field

The embodiment of the application relates to the technical field of medical instruments, in particular to an ultrasonic surgical knife and a surgical instrument.

Background

The existing ultrasonic cutter respectively passes through the thumb wheel, the outer tube, the inner tube and the cutter bar through pins, an operator manually dials the thumb wheel, and force is transmitted to the outer tube, the inner tube and the cutter bar to rotate together. The existing pins are generally cylindrical and are limited by the size of the shank, which cannot be too large in diameter, and therefore are susceptible to damage when rotating or when the ultrasonic tool is in operation. In addition, in order to avoid the loss of ultrasonic energy through the pin, can wrap up the protective layer on the surface of pin, however, the place that the protective layer contacted with inner tube, outer tube because mechanical vibration can be cut apart by the pinhole edge of inner tube, outer tube, leads to the protective layer to drop.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides an ultrasonic surgical knife and a surgical instrument, which are used for solving the technical problems mentioned in the background technology.

In a first aspect, an embodiment of the present application provides an ultrasonic surgical tool, which includes an outer tube 101, an inner tube 102, a cutter bar 103, and a pin 104, where the outer tube 101, the inner tube 102, and the cutter bar 103 are respectively provided with a pin hole, the pin 104 penetrates through the pin hole, two ends of the pin 104 are respectively provided with a boss 1041, and a protective layer 1042 is provided between the two bosses 1041; the boss 1041 and the protection layer 1042 are in surface contact with the pin hole respectively, and the shape of the pin hole is matched with the shape of the pin 104.

In some embodiments, the distance between the surface of the protective layer 1042 and the surface of the boss 1041 is less than or equal to a preset distance.

In some embodiments, the distance between the inner sides of the two bosses 1041 is greater than the outer diameter of the tool bar 103 and less than the inner diameter of the inner tube 102.

In some embodiments, the thickness of the protective layer 1042 is greater than or equal to 0.2 millimeters.

In some embodiments, the material of the protective layer 1042 is a flexible material.

In some embodiments, the shape of the cross-section of the pin 104 includes any of: rectangular, trapezoidal and wave-shaped.

In a second aspect, embodiments of the present application provide a surgical instrument, including: an ultrasonic scalpel main body 401, an excitation switch 402 and an ultrasonic scalpel handle 403, wherein the ultrasonic scalpel handle 403 is provided with an ultrasonic scalpel as described in any one of the embodiments of the first aspect, and the ultrasonic scalpel main body 401 is connected to the excitation switch 402 and the ultrasonic scalpel handle 403 respectively.

The embodiment of the application provides an ultrasonic surgical knife and surgical instruments, both ends through the pin with on the ultrasonic surgical knife set up the boss, set up the protective layer between the boss, and set up the pin into specific shape, make the surface of boss and the surface of protective layer respectively with the contact form of pinhole be face contact, increase the stress intensity of pin, thereby drive the outer tube at the pin, when inner tube and cutter arbor rotate, can increase the area of contact of pin and pinhole, the fracture that the pin atress leads to greatly when avoiding rotatory, and/or the fracture of ultrasonic knife during operation cutter arbor, the security of operation is improved. And through setting up the protective layer, can reduce ultrasonic energy and cause the ultrasonic energy loss through pin coupling to inner tube or outer tube.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:

FIG. 1 is a schematic structural view of one embodiment of an ultrasonic surgical blade according to the present application;

FIG. 2 is a schematic view of a boss and a protective layer on a pin of an ultrasonic surgical blade according to the present application;

FIG. 3 is an exemplary structural schematic of the shape of a pin of an ultrasonic surgical blade according to the present application;

FIG. 4 is a schematic structural diagram of an embodiment of a surgical instrument according to the present application.

Detailed Description

The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and are not limiting of the invention. It should be noted that, for convenience of description, only the relevant portions of the related inventions are shown in the drawings.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

FIG. 1 shows a schematic structural view of one embodiment of an ultrasonic surgical blade of the present application. As shown in fig. 1, the ultrasonic surgical knife 100 includes an outer tube 101, an inner tube 102, a knife bar 103, and a pin 104, the outer tube 101, the inner tube 102, and the knife bar 103 are respectively provided with a pin hole, the pin 104 passes through the pin hole, two ends of the pin 104 are respectively provided with a boss 1041, and a protective layer 1042 is provided between the two bosses 1041. The protective layer 1042 may isolate the pin 104 from the pin hole, thereby distributing the forces experienced by the pin 104 and avoiding mechanical coupling and breaking the pin 104. Typically, the two bosses 1041 are symmetrical with respect to the center of the pin 104.

As shown in fig. 2, which shows a pin shaped as a cuboid and a schematic view of the cross-section a-a.

The boss 1041 and the protection layer 1042 are in surface contact with the pin hole respectively, and the shape of the pin hole is matched with the shape of the pin 104.

In the conventional ultrasonic surgical knife, the pin 104 disposed thereon is generally cylindrical, so that the strength of the bearing force is small due to the limited diameter of the cylindrical pin, and when the knife bar 103 is rotated by an operator, the pin 104 contacts the pin hole in an approximately linear contact manner, so that the pin 104 is broken due to the over-concentrated stress. In this embodiment, the shape of the pin 104 may be set to be non-cylindrical, so that the pin 104 and the pin hole contact in a surface contact manner and the mechanical strength may be increased. As shown in fig. 1, the pin 104 is non-cylindrical in shape.

In some alternative implementations of the present embodiment, the shape of the cross-section of the pin 104 includes, but is not limited to, any of: rectangular, trapezoidal, wavy, etc. As shown in fig. 3, which shows a pin of various shapes with a protective layer disposed thereon. It should be noted that the shape of the pin shown in fig. 2 is merely exemplary, and any shape that allows the pin to contact the pin hole surface is within the scope of the present application.

In some optional implementations of this embodiment, a distance between the surface of the protective layer 1042 and the surface of the boss 1041 is less than or equal to a preset distance. Typically, as shown in fig. 2, the surface of the protective layer 1042 is flush with the surface of the boss 1041, i.e., the distance between the two is equal to zero. The distance between the surface of the protective layer 1042 and the surface of the boss 1041 is less than or equal to a preset distance, so that the surface of the pin 104 is substantially flush, and the pin 104 can be conveniently disassembled and assembled.

In some alternative implementations of this embodiment, the distance between the inner sides of the two bosses 1041 is greater than the outer diameter of the tool bar 103 and less than the inner diameter of the inner tube 102. The embodiment can prevent the inner tube 102 and the outer tube 101 from contacting the protection layer 1042, thereby preventing the protection layer 1042 from falling off due to the damage of the protection layer 1042 caused by friction.

In some optional implementations of this embodiment, the thickness of the protective layer 1042 is greater than or equal to 0.2 mm. The thickness of the protective layer 1042 is set to be greater than or equal to 0.2 mm, so that the ultrasonic energy can be effectively prevented from being transmitted to the inner tube 102 and the outer tube 101 through the cutter bar 103, the loss of the ultrasonic energy is reduced, and the transmission efficiency of the ultrasonic energy is improved.

In some alternative implementations of this embodiment, the material of the protective layer 1042 is a flexible material. By way of example, the material of the protective layer 1042 may be plastic, rubber, etc., which may effectively reduce the ultrasonic energy transmitted to the pin 104, and further avoid fracture of the pin 104 and the tool holder 103.

The above-mentioned embodiment of the application provides an ultrasonic surgical knife, both ends through the pin with on the ultrasonic surgical knife set up the boss, set up the protective layer between the boss, and set up the pin into specific shape, make the surface of boss and the surface of protective layer respectively with the contact form of pinhole be face contact, increase the stress intensity of pin, thereby drive the outer tube at the pin, when inner tube and cutter arbor rotate, can increase the area of contact of pin and pinhole, the fracture that the pin atress leads to greatly when avoiding rotatory, and/or the fracture of ultrasonic knife during operation cutter arbor, the security of operation is improved. And through setting up the protective layer, can reduce ultrasonic energy and cause the ultrasonic energy loss through pin coupling to inner tube or outer tube.

With further reference to fig. 4, a schematic structural diagram of one embodiment of a surgical instrument 400 of the present application is shown. The surgical instrument 400 includes: an ultrasonic scalpel main body 401, an excitation switch 402 and an ultrasonic scalpel handle 403, wherein the ultrasonic scalpel handle is provided with an ultrasonic scalpel as described in the embodiment shown in fig. 1, and the ultrasonic scalpel main body 401 is respectively connected with the excitation switch 402 and the ultrasonic scalpel handle 403.

The surgical instrument provided by the above embodiment of the present application, by introducing the ultrasonic scalpel handle described in the embodiment shown in fig. 1, can avoid the fracture caused by the excessive stress on the pin during rotation and/or the fracture of the knife bar during the operation of the ultrasonic knife. In addition, the protective layer is arranged between the bosses on the pin, so that the protective layer can be prevented from being damaged and falling off due to friction with the inner tube or the outer tube, and the operation effect is improved.

The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be understood by those skilled in the art that the scope of the present invention is not limited to the specific combination of the above-mentioned features, but also covers other embodiments formed by any combination of the above-mentioned features or their equivalents without departing from the spirit of the present invention. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.

Claims

1. An ultrasonic surgical knife is characterized by comprising an outer tube (101), an inner tube (102), a knife bar (103) and a pin (104), wherein the outer tube (101), the inner tube (102) and the knife bar (103) are respectively provided with a pin hole, the pin (104) penetrates through the pin holes, two ends of the pin (104) are respectively provided with a boss (1041), and a protective layer (1042) is arranged between the two bosses (1041);

the boss (1041) and the protective layer (1042) are in surface contact with the pin hole respectively, and the shape of the pin hole is matched with that of the pin (104).

2. The ultrasonic surgical blade of claim 1, wherein a distance between a surface of the protective layer (1042) and a surface of the boss (1041) is less than or equal to a preset distance.

3. The ultrasonic surgical tool according to claim 1, wherein a distance between inner sides of the two bosses (1041) is larger than an outer diameter of the tool bar (103) and smaller than an inner diameter of the inner tube (102).

4. The ultrasonic surgical blade of claim 1, wherein the thickness of the protective layer (1042) is 0.2 mm or greater.

5. The ultrasonic surgical blade of claim 2, wherein the material of the protective layer (1042) is a flexible material.

6. The ultrasonic surgical blade of any of claims 1-5, wherein the shape of the cross-section of the pin (104) comprises any of: rectangular, trapezoidal and wave-shaped.

7. A surgical instrument, characterized in that the surgical instrument comprises: an ultrasonic scalpel main body (401), an excitation switch (402) and an ultrasonic scalpel handle (403), wherein the ultrasonic scalpel handle (403) is provided with the ultrasonic scalpel according to any one of claims 1-6, and the ultrasonic scalpel main body (401) is respectively connected with the excitation switch (402) and the ultrasonic scalpel handle (403).