CN118044858A - Ultrasonic knife presses mouth closed drive arrangement - Google Patents

Abstract

The invention discloses an ultrasonic knife pressing nozzle closing driving device, wherein an outer sleeve of a pressing nozzle sleeve assembly is axially connected with a pressing nozzle elastic assembly, so that when a hand trigger is held tightly, a second connecting rod pushes a first connecting rod, the pressing nozzle elastic assembly and the outer sleeve to move towards a pressing nozzle along the axial direction of a cutter bar to enable the pressing nozzle to be closed, and the outer sleeve only moves relative to the inner sleeve, so that friction among all parts during operation is reduced.

Description

Ultrasonic knife presses mouth closed drive arrangement

Technical Field

The invention belongs to the field of medical appliances, and particularly relates to an ultrasonic knife pressing nozzle closing driving device.

Background

When an ultrasonic knife is used for performing an operation on a human body, an ultrasonic knife pressing mouth closing driving device is generally used for driving the pressing mouth to open and close, the ultrasonic knife pressing mouth closing driving device is used for driving the pressing mouth to close and then clamp soft tissues or blood vessels, and then an ultrasonic knife bar is excited to perform ultrasonic vibration, so that the soft tissues or the blood vessels can be cut.

The prior ultrasonic knife pressing nozzle closing driving device comprises a pressing nozzle sleeve assembly, a pressing nozzle elastic assembly, a pressing nozzle connecting rod assembly and a hand trigger, wherein the pressing nozzle elastic assembly is connected with the pressing nozzle sleeve assembly in a clamping mode, the pressing nozzle connecting rod assembly is used for pushing the pressing nozzle elastic assembly to move, and when the hand trigger is buckled or held tightly, the pressing nozzle connecting rod assembly pulls the pressing nozzle elastic assembly to move relative to the outer sleeve and the cutter bar, so that the pressing nozzle is opened, and conversely, the pressing nozzle is closed.

The driving pressing nozzle sleeve assembly comprises a cutter bar, an inner sleeve and an outer sleeve which are sequentially sleeved from inside to outside, wherein the inner sleeve is axially connected with the pressing nozzle elastic assembly. But during operation, the ultrasonic knife installed on the knife bar can generate ultrasonic vibration, the ultrasonic vibration can be transmitted to the inner sleeve, and friction can be generated when the inner sleeve moves relative to the knife bar due to the fact that the inner sleeve is connected with the pressure nozzle elastic assembly, so that the service lives of the inner sleeve and the knife bar are affected.

Disclosure of Invention

The invention aims to solve the problems in the background art and provides an ultrasonic knife pressing nozzle closing driving device which reduces friction between an inner sleeve and a knife bar and between the inner sleeve and an outer sleeve during operation.

The invention relates to an ultrasonic knife pressing nozzle closing driving device, which comprises:

the first shell and the second shell are symmetrically and fixedly connected to form a closed shell space;

the pressing nozzle sleeve assembly comprises a cutter bar, an inner sleeve, an outer sleeve and a pressing nozzle, wherein the cutter bar, the inner sleeve and the outer sleeve are sleeved in sequence from inside to outside, and the pressing nozzle is hinged with the first end of the outer sleeve and is clamped with the first end of the inner sleeve; the cutter bar, the inner sleeve and the outer sleeve are circumferentially and fixedly connected into a whole, and the outer sleeve can axially move relative to the inner sleeve;

The pressing nozzle elastic assembly is arranged in the shell space and is axially connected with the outer sleeve;

The pressure mouth link assembly sets up in the casing space, it includes:

the first connecting rod is clamped with the pressure nozzle elastic assembly and is connected with the first shell and the second shell in a sliding way;

the first end of the second connecting rod is hinged with the first connecting rod;

The hand trigger is rotationally connected with the first shell and the second shell and hinged with the second end of the second connecting rod;

When the hand trigger is held, the second connecting rod pushes the first connecting rod, the pressing nozzle elastic assembly and the pressing nozzle sleeve assembly to move along the first shell and the second shell towards the pressing nozzle direction, and the pressing nozzle is closed.

Preferably, the first link includes a first link clamping portion and a first link main body portion connected to each other;

the clamping groove for clamping the pressing nozzle elastic component is formed in the first connecting rod clamping part, and the length direction of the clamping groove is away from the main body part of the first connecting rod;

A first sliding pin hole and a second sliding pin hole are formed in the side face of the first connecting rod main body part, long-strip-shaped sliding grooves are respectively formed in the first shell and the second shell, and two ends of a sliding pin are arranged in the long-strip-shaped sliding grooves in the first shell and the second shell after the sliding pin passes through the first sliding pin hole and the second sliding pin hole respectively;

A second connecting rod accommodating groove and a hand trigger dodge groove which are communicated are further formed in the bottom surface of the first connecting rod main body part, the second connecting rod accommodating groove is close to the first connecting rod clamping part, and the hand trigger dodge groove is far away from the first connecting rod clamping part;

And a first connecting rod hinge hole penetrating through the second connecting rod accommodating groove is further formed in the first connecting rod main body part between the first sliding pin hole and the second sliding pin hole and is used for being hinged with the second connecting rod.

Preferably, the hand trigger is provided with two first hand trigger pin holes with the same axle center;

the first and second shells are respectively provided with a hand trigger mounting shaft, the hand trigger is arranged in the first and second shells, and the hand trigger pin hole is inserted into the corresponding hand trigger mounting shaft to realize the rotation of the hand trigger relative to the first and second shells.

Preferably, the hand trigger is also provided with two concentric second hand trigger pin holes;

One end of the second connecting rod is provided with a second rotation pin hole, and the second rotation pin hole is arranged between the two second hand trigger pin holes and is hinged with the two second hand trigger pin holes through a rotation pin.

Preferably, a first rotation pin hole is formed in the other end of the second connecting rod, and the first rotation pin hole is hinged to the first connecting rod hinge hole.

Preferably, the pressure nozzle elastic component comprises a hollow supporting front seat and a supporting rear seat sleeved in the supporting front seat and fixedly connected with the supporting front seat;

The support backseat comprises a backseat end part, a backseat connecting part, a plurality of supporting claws and a plurality of positioning convex blocks, wherein the backseat end part, the backseat connecting part and the supporting claws are sequentially connected, the positioning convex blocks are arranged on the backseat connecting part between every two supporting claws, and a grapple hook is arranged at the end part of each supporting claw;

A plurality of outer sleeve clamping holes are circumferentially arranged near the second end of the outer sleeve; a plurality of outer sleeve positioning grooves are circumferentially arranged at the second end of the outer sleeve;

The second end of the outer sleeve is sleeved in the supporting front seat, the outer sleeve clamping hole is correspondingly clamped with the grapple, and the outer sleeve positioning groove is correspondingly clamped with the positioning convex block.

Preferably, the outer sleeve clamping holes and the outer sleeve positioning grooves are staggered in the circumferential direction of the outer sleeve.

Preferably, the front support seat comprises a front seat end part and a front seat connecting part which are connected, and a front seat center hole which is communicated is formed in the centers of the front seat end part and the front seat connecting part;

The pressure nozzle elastic assembly further comprises a first elastic piece, a first support, a second support and a second elastic piece, wherein the first elastic piece, the first support and the second support are sleeved outside the front seat connecting part, the second support and the second elastic piece are sleeved outside the first support, the second elastic piece is sleeved between the first support and the second support, the first elastic piece and the second elastic piece are sleeved between the first support and the second support, and the first support and the second support are in collision with the rear seat end part;

the second end of the outer sleeve is sleeved in the front seat center hole.

Preferably, the first elastic member is a large wave spring, and the second elastic member is a small wave spring.

Preferably, the second bracket comprises a second bottom bracket and a second abutting portion, wherein the second bottom bracket is connected, one side of the second bottom bracket abuts against the second elastic piece, the other side of the second bottom bracket abuts against the clamping groove in a clamping manner, and the second abutting portion abuts against the end part of the rear seat.

Preferably, the second end of the outer sleeve is provided with an outer sleeve strip hole, the second end of the inner sleeve is provided with an inner sleeve pin hole, the second end of the cutter bar is provided with a cutter bar pin hole, and the sleeve pin penetrates through the outer sleeve strip hole, the inner sleeve pin hole and the cutter bar pin hole respectively to connect the outer sleeve, the inner sleeve and the cutter bar into a whole.

Preferably, the second end of the inner sleeve is provided to extend beyond the second end of the outer sleeve.

By adopting the technical scheme, the invention has the following beneficial effects:

1. The pressing nozzle elastic component of the ultrasonic knife pressing nozzle closing driving device is axially connected with the outer sleeve, so that when the pressing nozzle is closed by pushing the first connecting rod to move towards the pressing nozzle when the hand trigger is held, the outer sleeve only moves relative to the inner sleeve, and the friction between each part during operation is greatly reduced compared with the prior art due to the fact that the inner sleeve is arranged between the cutter bar and the outer sleeve; in the prior art, the elastic component of the pressing nozzle is axially connected with the inner sleeve, when the hand trigger is held, the inner sleeve moves relative to the outer sleeve and also moves relative to the cutter bar, and the friction between the inner sleeve and the cutter bar is serious due to the ultrasonic vibration generated by the ultrasonic knife on the cutter bar;

2. The first connecting rod hinge hole penetrating the second connecting rod accommodating groove is further arranged between the first sliding pin hole and the second sliding pin hole of the ultrasonic knife pressing mouth closing driving device, and the first connecting rod hinge hole is connected with one end of the second connecting rod, so that the first connecting rod moves towards the pressing mouth when the hand trigger is gripped, then the outer sleeve is pushed to move towards the pressing mouth, the pressing mouth is forced to be closed, the pressing mouth is opened when the hand trigger is gripped in the prior art, the pressing mouth is closed when the hand trigger is gripped, and muscle tissues are clamped to start operations, and the operation habit of operators can be met.

These and other features, aspects, and advantages of the present application will become better understood with reference to the following description. The accompanying drawings, which 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.

Drawings

A full and enabling disclosure of the present application, including the best mode thereof, directed to one of ordinary skill in the art, is set forth in the specification, which makes reference to the appended figures, in which:

Fig. 1 is a schematic structural view of a pressure nozzle opening state of a pressure nozzle closing driving device of an ultrasonic knife according to an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of FIG. 1;

Fig. 3 is a schematic structural view of a first housing of an ultrasonic knife pressing nozzle closing driving device according to an embodiment of the present invention;

Fig. 4 is a schematic structural view of a nozzle sleeve assembly of a nozzle closing driving device of an ultrasonic knife according to an embodiment of the present invention;

FIG. 5 is a schematic cross-sectional view of FIG. 4;

fig. 6 is a schematic structural view of a pressing nozzle of an ultrasonic knife pressing nozzle closing driving device according to an embodiment of the present invention;

fig. 7 is a schematic structural view of an outer sleeve of an ultrasonic knife pressing nozzle closing driving device according to an embodiment of the present invention;

FIG. 8 is a schematic structural view of an inner sleeve of an ultrasonic knife nozzle closing drive device according to an embodiment of the present invention;

fig. 9 is a schematic structural view of a cutter bar of an ultrasonic cutter pressing nozzle closing driving device according to an embodiment of the present invention;

Fig. 10 is a schematic structural view of a thumb wheel of an ultrasonic knife pressing nozzle closing driving device according to an embodiment of the present invention;

FIG. 11 is a schematic diagram of the assembly structure of the hand trigger, the first and second links of the ultrasonic knife nozzle closing driving device according to the embodiment of the present invention;

fig. 12 is a schematic diagram of a front structure of a first link of an ultrasonic knife pressing nozzle closing driving device according to an embodiment of the present invention;

Fig. 13 is a schematic diagram of the reverse structure of a first link of an ultrasonic knife pressing nozzle closing driving device according to an embodiment of the present invention;

FIG. 14 is a schematic view of a hand trigger of an ultrasonic knife nozzle closure driving device according to an embodiment of the present invention;

fig. 15 is a schematic structural view of a second link of an ultrasonic knife pressing nozzle closing driving device according to an embodiment of the present invention;

fig. 16 is a schematic diagram of an assembly structure of a nozzle elastic component of a nozzle closing driving device of an ultrasonic knife according to an embodiment of the present invention;

FIG. 17 is a schematic cross-sectional view of FIG. 16;

fig. 18 is a schematic structural view of a supporting front seat of an ultrasonic knife pressing nozzle closing driving device according to an embodiment of the present invention;

Fig. 19 is a schematic structural view of a support back seat of an ultrasonic knife pressing nozzle closing driving device according to an embodiment of the present invention;

Fig. 20 is a schematic diagram of an assembly structure of a first link and a nozzle elastic component of a nozzle-pressing closing driving device of an ultrasonic knife according to an embodiment of the present invention;

Fig. 21 is a schematic structural view of a first bracket of an ultrasonic knife pressing nozzle closing driving device according to an embodiment of the present invention;

fig. 22 is a schematic structural view of a second bracket of an ultrasonic knife pressing nozzle closing driving device according to an embodiment of the present invention;

FIG. 23 is a schematic view of a prior art ultrasonic knife nozzle closure drive;

FIG. 24 is a schematic view of the structure of FIG. 23;

FIG. 25 is a schematic view of the reverse side of a first link of a prior art ultrasonic knife nozzle closure drive;

fig. 26 is a schematic front view of a first link of a conventional ultrasonic knife nozzle-closing driving device.

Reference numerals:

1-a first housing;

11-a thumb wheel bracket; 12-a hand trigger mounting shaft; 13-a strip-shaped chute;

2-a nozzle sleeve assembly;

21-a cutter bar; 211-a cutter bar body; 212-encapsulation; 213-cutter arbor pin hole;

22-pressing the mouth; 221-pressing nozzle pin holes; 222-snap; 23-pressing a nozzle pin;

24-an inner sleeve; 241-an inner sleeve clamping groove; 242-inner sleeve pin holes;

25-an outer sleeve; 251-outer sleeve pin hole; 252-outer sleeve elongate bore; 253-an outer sleeve clamping hole; 254-an outer sleeve positioning groove; 26-thumb wheel; 261-thumb wheel pin hole; 27-a sleeve pin;

3-a nozzle elastic component;

31-supporting a front seat; 311-front seat end; 312-front seat connection; 313-front seat central hole;

32-a first elastic member; 33-a first scaffold; 331-a first shoe; 332-a first interference portion; 34-a second elastic member; 35-a second bracket; 351-a second shoe; 352-second interference; 36-supporting a rear seat; 361-rear seat end; 362-a rear seat connection; 363-pawl; 3631-grappling hook; 364-positioning the bumps;

4-a nozzle elastic component;

41-a first link; 411-card slot; 412-a first sliding pin hole; 413-second sliding pin holes; 414-a second link receiving groove; 415-a hand trigger dodge slot; 416-first link hinge hole; 42-sliding pins; 43-a second link; 431—a first swivel pin hole; 432-second swivel pin holes; 44-hand trigger; 441—a first hand trigger pin hole; 442-second hand trigger pin hole; 45-rotating pins;

1 a-a first housing of the prior art; 2 a-prior art nozzle sleeve assembly, 3 a-prior art nozzle spring assembly, 4 a-prior art nozzle spring assembly; 21 a-prior art knife bar; 24 a-prior art inner sleeve; 25 a-prior art outer sleeve.

31 A-prior art support front; 32 a-a first resilient member of the prior art; 33 a-a first bracket of the prior art; 34 a-a second prior art elastic member; 35 a-a second bracket of the prior art; 36 a-prior art support backseat.

41 A-a first link of the prior art; 411 a-prior art card slot; 412 a-a first prior art sliding pin hole; 413 a-second sliding pin holes of the prior art; 414 a-a second prior art connecting rod receiving slot; 415 a-prior art trigger dodge slot; 44 a-prior art hand trigger.

Detailed Description

Reference now will be made in detail to embodiments of the application, one or more examples of which are illustrated in the drawings. Each example is provided by way of explanation, not limitation, of the application. Indeed, it will be apparent to those skilled in the art that various modifications and variations can be made in the present application without departing from the scope or spirit of the application. For example, features illustrated or described as part of one embodiment can be used with another embodiment to yield a still further embodiment. Accordingly, it is intended that the present application cover such modifications and variations as come within the scope of the appended claims and their equivalents. As used in this specification, the terms "first," "second," and the like are used interchangeably to distinguish one component from another and are not intended to represent the location or importance of the respective components. As used in this specification, the terms "a," "an," "the," and "said" are intended to mean that there are one or more elements unless the context clearly indicates otherwise. The terms "comprising," "including," and "having" are intended to be inclusive and mean that there may be additional elements other than the listed elements.

Referring now to the drawings, in which like numerals represent like elements throughout, the present invention is further explained below in connection with specific embodiments.

The invention provides a closing driving device for an ultrasonic knife pressing nozzle, wherein an outer sleeve only moves relative to an inner sleeve when the pressing nozzle is operated to open and close, and the friction force between the outer sleeve and the inner sleeve is small, so that the closing driving device for the ultrasonic knife pressing nozzle has long service life.

Fig. 1 is a structural diagram of an ultrasonic knife nozzle closing driving device when a nozzle is opened, and fig. 2 is a sectional diagram of fig. 1, wherein the ultrasonic knife nozzle closing driving device comprises a first shell and a second shell which are symmetrically and fixedly connected left and right, a nozzle pressing sleeve assembly 2 clamped on a shell space enclosed by the first shell and the second shell, a nozzle pressing elastic assembly 3 arranged in the shell space enclosed by the first shell and the second shell and connected with the nozzle pressing sleeve assembly 2, and a nozzle pressing connecting rod assembly 4 arranged in the shell space enclosed by the first shell and the second shell and clamped with the nozzle pressing elastic assembly 3. The pressing nozzle connecting rod assembly 4 drives the pressing nozzle on the pressing nozzle sleeve assembly 2 to close through the pressing nozzle elastic assembly 3 when the fastening force is applied.

First shell body

The first and second housings are bilaterally symmetrical, and the first housing 1 is taken as an example of the structure of the application.

As shown in fig. 3, which is a structural diagram of the first housing 1, the first housing 1 includes a first link body portion and a handle portion connected to each other, a semicircular thumb wheel bracket 11 is provided at an edge of the first link body portion, and the thumb wheel brackets 11 of the first housing 1 and the second housing cooperate to form a circular thumb wheel bracket 11 for supporting the pressure nozzle sleeve assembly 2.

The first link body portion is further provided with a trigger mounting shaft 12 to which a trigger 44 of the tip pressing link assembly 4 is mounted, and the trigger 44 described later is rotated relative to the trigger mounting shaft 12.

The first link body portion is provided with an elongated chute 13 along which the first link 41 of the tip-and-link assembly 4 slides.

Press nozzle sleeve assembly 2

As shown in fig. 4 and 5, the crimping sleeve assembly 2 includes a cutter bar 21, an inner sleeve 24, and an outer sleeve 25, which are sequentially sleeved from inside to outside.

As shown in fig. 6, which is a structural view of the pressing nozzle 22, for convenience of connection with the outer sleeve 25, the end of the pressing nozzle 22 is provided with two coaxial pressing nozzle pin holes 221.

As shown in fig. 7, which is a hollow structure, the first end is provided with two coaxial outer sleeve pin holes 251, two pressing nozzle pin holes 221 of the pressing nozzle 22 are respectively clamped on the outer sides of the outer sleeve pin holes 251, and the pressing nozzle 22 and the outer sleeve 25 are connected through the pressing nozzle pin 23 passing through the two pressing nozzle pin holes 221 and the two outer sleeve pin holes 251, so that the pressing nozzle 22 rotates relative to the outer sleeve 25 through the pressing nozzle pin 23.

With continued reference to fig. 6, in order to limit the extent to which the plunger 22 rotates relative to the outer sleeve 25, the plunger 22 is further provided with two symmetrically disposed connectors, each provided with a protruding catch 222, connected to the inner sleeve 24. Correspondingly, as shown in fig. 8, which is a structural diagram of the inner sleeve 24, fig. 9 is a partial schematic diagram of the end of fig. 8, two symmetrical square inner sleeve clamping grooves 241 are provided at the first end of the inner sleeve 24, the clamping buckles 222 on the pressing mouth 22 are clamped into the inner sleeve clamping grooves 241, and when the pressing mouth 22 is closed, the pressing mouth 22 rotates around the pressing mouth pin 23 relative to the outer sleeve 25 so that the pressing mouth 22 and the outer sleeve 25 are in the same plane; when the pressing nozzle 22 is opened, the pressing nozzle 22 rotates for a certain angle relative to the outer sleeve 25 until the buckle 222 of the pressing nozzle 22 is buckled with the inner sleeve clamping groove 241, and the pressing nozzle 22 does not rotate relative to the outer sleeve 25 any more, so that the limiting opening and closing angle is reached.

The ultrasonic knife needs to be installed on the knife bar 21 during operation, and the ultrasonic knife needs to be rotated during operation, so that the outer sleeve 25, the inner sleeve 24 and the knife bar 21 need to be coaxially rotated. To this end, the second end of the outer sleeve 25 is provided with an outer sleeve elongate aperture 252, as shown in fig. 7; an inner sleeve pin bore 242 is provided at a second end of the inner sleeve 24 as shown in fig. 8; a cutter bar pin hole 213 is provided at a second end of the cutter bar 21 as shown in fig. 9; a thumb wheel pin hole 261 is provided on the thumb wheel 26 as shown in fig. 10; the thumb wheel 26 is sleeved on the outer sleeve 25, and the sleeve pin 27 passes through the thumb wheel pin hole 261, the outer sleeve strip hole 252, the inner sleeve pin hole 242 and the cutter bar pin hole 213 respectively to connect the thumb wheel 26, the outer sleeve 25, the inner sleeve 24 and the cutter bar 21 into a whole. The thumb wheel 26 of the pressure nozzle sleeve assembly 2 is clamped in the thumb wheel bracket 11, the thumb wheel 26 can rotate relative to the thumb wheel bracket 11, and when the ultrasonic knife needs to be rotated, the thumb wheel 26 only needs to be shifted to rotate. The outer sleeve 25 is provided with an outer sleeve strip hole 252, so that the outer sleeve 25 can axially move relative to the inner sleeve 24, and the pressing nozzle 22 can be pushed and pulled to open and close.

As shown in fig. 9, a first end of the cutter bar main body 211 is provided with a cutter bar on which an ultrasonic blade is mounted. In order to prevent the cutter bar body 211 from transmitting vibration to the inner sleeve 24, a plurality of rubber coatings 212 are sleeved on the cutter bar body 211 to prevent the cutter bar body 211 from being in direct contact with the inner sleeve 24. However, in the prior art, the inner sleeve 24 moves relative to the cutter bar 21, and vibration is still transmitted to the inner sleeve 24, resulting in friction between the inner sleeve 24 and the cutter bar 21.

Press nozzle connecting rod assembly 4

As shown in fig. 11, the tip-pressing link assembly 4 includes a hand trigger 44 which rotates relative to the first and second housings, a first link 41 provided in a space formed by the first and second housings, and a second link 43 having one end hinged to the first link 41 and the other end hinged to the hand trigger 44, and the hand trigger 44 is rotated relative to the first and second housings, and the second link 43 hinged to the hand trigger 44 drives the first link 41 to move in the longitudinal direction thereof.

Specifically, as shown in fig. 12 and 13, the first link 41 is configured to include a first link clamping portion for clamping the nozzle elastic assembly 3 and a first link main body portion for sliding along the first and second housings and connecting the second link 43. The first connecting rod clamping part is provided with a semicircular clamping groove 411 with an upward opening, and the clamping groove 411 is axially arranged away from the first connecting rod main body part and is used for clamping the pressure nozzle elastic assembly 3. In order to increase the connection strength between the first link clamping portion and the first link main body portion, a first link connection portion connecting the first link clamping portion and the first link main body portion is further provided at an upper portion of the first link clamping portion.

The first link body is provided with a first sliding pin hole 412 and a second sliding pin hole 413, both ends of the sliding pin 42 respectively pass through the first sliding pin hole 412 and the second sliding pin hole 413 and are arranged in the long-strip-shaped sliding groove 13 on the first shell and the second shell, and the first link 41 is pushed by the second link 43 to move along the long-strip-shaped sliding groove 13.

The bottom surface of the first link body portion is further provided with a second link accommodating groove 414 and a hand trigger dodge groove 415 which are communicated to accommodate the second link 43, and the second link accommodating groove 414 is provided close to the first link clamping portion, and the hand trigger dodge groove 415 is provided away from the first link clamping portion.

A first link hinge hole 416 penetrating the second link receiving groove 414 is further provided in the first link body portion between the first and second slide pin holes 412, 413 for hinge-coupling with the second link 43.

As shown in fig. 14, which shows the structure of the hand trigger 44, the hand trigger 44 includes a handle and a hand trigger main body portion connected to each other, two first mounting brackets and two second mounting brackets extending from each other are provided on the hand trigger main body portion, two first hand trigger pin holes 441 are provided at the ends of the first mounting brackets, and two second hand trigger pin holes 442 are provided at the ends of the second mounting brackets. Two of the first hand trigger pin holes 441 are inserted into the hand trigger mounting shafts 12 on the first and second housings, respectively, to effect rotational connection of the first and second housings to the hand trigger 44. The two second hand trigger pin holes 442 are hinged to the second swing pin holes 432 of the second link 43 by the swing pin 45, and the first swing pin holes 431 of the second link 43 are hinged to the first link hinge holes 416 by the swing pin, as shown in fig. 11, 14 and 15.

When the hand trigger 44 is gripped or pulled, the second link 43 rotates in the direction of the first slide pin hole 412 relative to the first link 41, thereby pushing the first link 41 to move along the first and second housings in the direction of the mouthpiece 22.

Press nozzle elastic component 3

In the prior art, as shown in fig. 23 and 24, the nozzle elastic assembly 3a is connected to the inner sleeve 24a, when the hand trigger 44a of the nozzle connecting rod assembly 4a is gripped, the first connecting rod 41a is moved to the rear of the nozzle (the direction from the nozzle to the first connecting rod is backward, and vice versa), the first connecting rod 41a is clamped with the nozzle elastic assembly 3a to move the inner sleeve 24a to the rear of the nozzle relative to the outer sleeve 25 and the cutter bar 21a, so that the nozzle is opened, and when the hand trigger 44a is released, the inner sleeve 24a is moved to the nozzle direction under the reaction force of the nozzle elastic assembly 3a, so that the nozzle is closed.

However, the knife bars 21a are all provided with ultrasonic knives, ultrasonic vibrations are generated during operation of the ultrasonic knives and are transmitted to the inner sleeve 24a, so that friction is generated when the inner sleeve 24a moves relative to the knife bars 21a, and the service life of the inner sleeve 24 is shortened.

Therefore, the nozzle elastic component 3 of the ultrasonic knife nozzle closing driving device is axially connected with the outer sleeve 25 of the nozzle sleeve component 2, so that the outer sleeve 25 only moves relative to the inner sleeve 24, ultrasonic vibration generated by the knife bar 21 is not transmitted to the inner sleeve 24, friction is not generated between the inner sleeve 24 and the outer sleeve 25, or at least the friction is reduced, and the service life of the inner sleeve 24 is prolonged.

When the hand trigger 44 is pulled, the first link 41 is driven to move in the direction of the pressing nozzle 22 by the force applied to the second link 43, and the pressing nozzle elastic assembly 3 is particularly engaged with the first link engaging portion, specifically, the pressing nozzle elastic assembly 3 is engaged with the engaging slot 411, so that the pressing nozzle 22 is driven to open and close by the first link 41.

As shown in fig. 16 and 17, the nozzle elastic assembly 3 includes a front support seat 31, a rear support seat 36 fixedly installed in the front support seat 31, a first elastic member 32 and a first bracket 33 installed outside the front support seat 31 between the front support seat 31 and the rear support seat 36, a second bracket 35 installed outside the first bracket 33, and a second elastic member 34 installed outside the first bracket 33 between the first bracket 33 and the second bracket 35. Wherein the first bracket 33 and the second bracket 35 are in contact with the support back 36.

In this embodiment, the first elastic member 32 is a large wave spring, and the second elastic member 34 is a small wave spring, and the number, diameter and thickness of the large wave spring are all greater than or equal to those of the small wave spring, so that the compression amount of the large wave spring is greater than that of the small wave spring, and the elasticity is better than that of the small wave spring.

Specifically, as shown in fig. 18, which is a structural diagram of the support front seat 31, it has a front seat end 311 and a front seat connecting portion 312 connected, wherein the end surface of the front seat end 311 is larger than the cross section of the front seat connecting portion 312, and the centers of the front seat end 311 and the front seat connecting portion 312 are provided with a front seat center hole 313 communicating. The front seat center hole 313 has an internal thread to facilitate connection with the support rear seat 36.

As shown in fig. 19, which is a structural view of the support rear seat 36, it has a rear seat end portion 361, a rear seat connecting portion 362, four claws 363, and four positioning projections 364 provided on the rear seat connecting portion 362 between each two claws 363, which are sequentially connected. Wherein the end of each pawl 363 is provided with a catch 3631.

Four claws 363 of the support rear seat 36 are sleeved in the front seat connecting portion 312 of the support front seat 31 and connected with the internal threads of the front seat connecting portion 312 through the external threads of the rear seat connecting portion 362.

As shown in fig. 4 and 7, four square outer sleeve clamping holes 253 are circumferentially arranged around the outer surface of the outer sleeve near the second end of the outer sleeve 25; four outer sleeve positioning grooves 254 are circumferentially arranged at the second end of the outer sleeve 25, and the outer sleeve clamping holes 253 and the outer sleeve positioning grooves 254 are circumferentially staggered.

When the four claws 363 of the support rear seat 36 are sleeved in the front seat connecting part 312 of the support front seat 31, the second ends of the outer sleeve 25, the inner sleeve 24 and the cutter bar 21 simultaneously extend into the front seat center hole 313, and the four grapples 3631 are correspondingly clamped into the four outer sleeve clamping holes 253, so that the support rear seat 36 and the outer sleeve 25 are limited to axially move in unison; four outer sleeve locating slots 254 at the end of the outer sleeve 25 snap into corresponding locating tabs 364 of the support back 36 to define no relative rotation between the support back 36 and the outer sleeve 25 in the circumferential direction.

To facilitate the connection of the outer sleeve 25 with the four prongs 363 supporting the rear seat 36, the end of the inner sleeve 24 that fits within the outer sleeve 25 does not extend beyond the outer sleeve 25.

As shown in fig. 17 and 20, a first elastic member 32 and a first bracket 33 which are sleeved outside a front seat connecting portion 312 of the front support seat 31 and a second bracket 35 which is sleeved outside the first bracket 33 are sleeved between the front support seat 31 and the rear support seat 36 in sequence, and a second elastic member 34 which is sleeved outside the first bracket 33 is sleeved between the first bracket 33 and the second bracket 33, 35.

In order to support the ends of the first elastic member 32 and the second elastic member 34, the first bracket 33 includes a first base 331 and a first abutting portion 332 connected to each other, two sides of the first base 331 abut against the first elastic member 32 and the second elastic member 34, and the first abutting portion 332 abuts against the rear seat end 361.

In order to support the end portion of the second elastic member 34 and facilitate pushing the nozzle elastic assembly 3, the second bracket 35 includes a second base 351 and a second abutting portion 352, where one side of the second base 351 abuts against the second elastic member 34, and the other side abuts against the clamping slot 411 on the first link 41, and the second abutting portion 352 abuts against the rear seat end portion 361, as shown in fig. 20. When the first link 41 is pushed to move along the length direction, the second bracket 35 is pushed by the first link 41, the second elastic element 34, the first bracket 33, the first elastic element 32 and the support front seat 31 are mutually pushed to move towards the pressing mouth 22, but the support front seat 31 and the support rear seat 36 are fixedly connected into a whole through threads, the support rear seat 36 is also pushed to move towards the pressing mouth 22, the support rear seat 36 is clamped with the outer sleeve 25, and when the support rear seat 36 moves towards the pressing mouth 22, the outer sleeve 25 is driven to move towards the pressing mouth 22 relative to the inner sleeve 24, so that the pressing mouth 22 is closed, and conversely, the pressing mouth 22 is opened.

In summary, the prior art ultrasonic knife nozzle closure drive device includes:

The first and second housings 1a are engaged with a nozzle sleeve assembly 2a provided in a housing space defined by the first and second housings 1a, a nozzle elastic assembly 3a provided in a housing space defined by the first and second housings 1a and connected to the nozzle sleeve assembly 2a, and a nozzle link assembly 4a provided in a housing space defined by the first and second housings 1a and engaged with the nozzle elastic assembly 3 a.

However, the prior art and the ultrasonic knife nozzle closing driving device of the application have the following differences:

1. the structure of the nozzle elastic assembly 3 of the present application is opposite to that of the nozzle elastic assembly 3a of the prior art, as shown in fig. 23 and 24, the nozzle elastic assembly 3a of the prior art includes a front support seat 31a, a rear support seat 36a sleeved in the front support seat 31a and fixedly connected thereto, a first elastic member 32a and a first support 33a sleeved outside the front support seat 31a between the front support seat 31a and the rear support seat 36a, a second support 35a sleeved outside the first support 33a, and a second elastic member 34a sleeved outside the first support 33a between the first support 33a and the second support 35 a. Wherein the first bracket 33a and the second bracket 35a are in contact with the supporting front seat 31a, and the first elastic member 32a is in contact with the supporting rear seat 36 a. Therefore, the supporting front seat and the supporting rear seat of the pressure nozzle elastic component in the prior art are identical in structure, but the first elastic piece, the first bracket, the second bracket and the second elastic piece sleeved on the supporting front seat are opposite in position arrangement.

2. The prior art support backseat 36a is snapped into engagement with the inner sleeve 24a and the support backseat 36 of the present application is snapped into engagement with the inner sleeve 24 a.

3. The second link receiving groove 414a and the hand trigger dodge groove 415a on the bottom surface of the prior art first link 41a are arranged in the opposite direction to the present application, and as shown in fig. 25, the second link receiving groove 414 of the present application is located close to the first link clamping portion, and the second link receiving groove 414a of the prior art is located away from the first link clamping portion.

4. The first link 41 of the present application is further provided on the side thereof with a first link hinge hole 416 penetrating the second link receiving groove 414 between the first and second slide pin holes 412,413, whereas the first link 41a of the related art is not provided on the side thereof with the first link hinge hole 416 penetrating the second link receiving groove 414a between the first and second slide pin holes 412a,413 a.

5. The locking groove 411 on the first link locking portion of the first link 41 of the present application is provided in the opposite direction to the locking groove 411a on the conventional first link locking portion, as shown in fig. 26.

It is the five points that result in the present application closing the nip while the present application grips the hand trigger 44, whereas the prior art grips the hand trigger 44a and opens the nip.

Compared with the prior art, the invention has the following beneficial effects:

1. The nozzle pressing elastic component 3 of the ultrasonic knife nozzle pressing closing driving device is axially connected with the outer sleeve 25, so that when the hand trigger 44 is held tightly, the second connecting rod pushes the first connecting rod to move towards the direction of the nozzle pressing 22 to enable the nozzle pressing 22 to be closed, the outer sleeve 25 only moves relative to the inner sleeve 24, and friction among all parts during operation is greatly reduced compared with the prior art due to the fact that the inner sleeve exists between the knife bar 21 and the outer sleeve; in the prior art, the elastic assembly of the pressing nozzle is axially connected with the inner sleeve, when the hand trigger 44 is gripped, the inner sleeve moves relative to the outer sleeve and also moves relative to the cutter bar, and the friction between the inner sleeve and the cutter bar 21 is serious due to the ultrasonic vibration generated by the ultrasonic knife on the cutter bar 21;

2. The first and second sliding pin holes 412,413 of the ultrasonic knife pressing mouth closing driving device of the invention are also provided with a first connecting rod hinge hole 416 penetrating the second connecting rod accommodating groove 414, and the first connecting rod hinge hole 416 is connected with one end of the second connecting rod 43, so that the first connecting rod 41 moves towards the pressing mouth 22 when the hand trigger 44 is gripped, then the outer sleeve 25 is pushed to move towards the pressing mouth 22, the pressing mouth is forced to be closed, and the pressing mouth is opened when the hand trigger is gripped in the prior art.

This written description uses examples to disclose the application, including the best mode, and also to enable any person skilled in the art to practice the application, including making and using any devices or systems and performing any incorporated methods. The patentable scope of the application is defined by the claims, and may include other embodiments that occur to those skilled in the art. Such other embodiments are intended to be within the scope of the claims if they include structural elements that do not differ from the literal language of the claims, or if they include equivalent structural elements with insubstantial differences from the literal languages of the claims.

Claims (12)

1. An ultrasonic knife pressure nozzle closing drive device, characterized in that it comprises:

the first shell and the second shell are symmetrically and fixedly connected to form a closed shell space;

The pressing nozzle sleeve assembly (2) comprises a cutter bar (21), an inner sleeve (24) and an outer sleeve (25) which are sleeved in sequence from inside to outside, and a pressing nozzle (22) hinged with the first end of the outer sleeve (25) and clamped with the first end of the inner sleeve (24); the cutter bar (21), the inner sleeve (24) and the outer sleeve (25) are fixedly connected into a whole in the circumferential direction, and the outer sleeve (25) can axially move relative to the inner sleeve (24);

The nozzle pressing elastic assembly (3) is arranged in the shell space and is axially connected with the outer sleeve (25);

And a pressing nozzle connecting rod assembly (4) arranged in the shell space and comprising:

the first connecting rod (41) is clamped with the pressure nozzle elastic assembly (3) and is in sliding connection with the first shell and the second shell;

a second link (43) having a first end hinged to the first link (41);

A hand trigger (44) rotatably connected with the first and second shells and hinged with the second end of the second connecting rod (43);

when the hand trigger (44) is held, the second connecting rod (43) pushes the first connecting rod (41), the pressing nozzle elastic assembly (3) and the outer sleeve (25) to move towards the pressing nozzle (22) along the axial direction of the cutter bar (21), and the pressing nozzle (22) is closed.

2. The ultrasonic knife nozzle closure driving device according to claim 1, wherein,

The first connecting rod (41) comprises a first connecting rod clamping part and a first connecting rod main body part which are connected;

The clamping groove (411) for clamping the pressure nozzle elastic component (3) is formed in the first connecting rod clamping part, and the length direction of the clamping groove (411) is away from the first connecting rod main body part;

A first sliding pin hole (412) and a second sliding pin hole (413) are formed in the side surface of the first connecting rod main body part, a long-strip-shaped sliding groove (13) is formed in each of the first shell and the second shell, and two ends of a sliding pin (42) respectively penetrate through the first sliding pin hole (412) and the second sliding pin hole (413) and then are arranged in the long-strip-shaped sliding groove (13) on the first shell and the second shell;

A second connecting rod accommodating groove (414) and a hand trigger dodge groove (415) which are communicated are further formed in the bottom surface of the first connecting rod main body part, the second connecting rod accommodating groove (414) is close to the first connecting rod clamping part, and the hand trigger dodge groove (415) is far away from the first connecting rod clamping part;

A first link hinge hole (416) penetrating the second link receiving groove (414) is further provided in the first link body portion between the first slide pin hole (412) and the second slide pin hole (413) for hinge-connecting with the second link (43).

3. The ultrasonic knife nozzle closure driving device according to claim 2, wherein,

The hand trigger (44) is provided with two first hand trigger pin holes (441) which are coaxial;

The first and second shells are respectively provided with a hand trigger mounting shaft (12), the hand trigger (44) is arranged in the first and second shells, and the hand trigger pin hole (441) is inserted into the corresponding hand trigger mounting shaft (12) to realize the rotation of the hand trigger (44) relative to the first and second shells.

4. The ultrasonic knife nozzle-closing driving device according to claim 3, wherein,

Two concentric second trigger pin holes (442) are also arranged on the trigger (44);

One end of the second connecting rod (43) is provided with a second rotation pin hole (432), the second rotation pin hole (432) is arranged between the two second hand trigger pin holes (442) and is hinged with the two second hand trigger pin holes (442) through a rotation pin (45).

5. The ultrasonic knife nozzle closure driving device according to claim 4, wherein,

The other end of the second connecting rod (43) is provided with a first rotation pin hole (431), and the first rotation pin hole (431) is hinged with the first connecting rod hinge hole (416).

6. The ultrasonic knife pressing nozzle closing driving device according to claim 2, wherein the pressing nozzle elastic component (3) comprises a hollow supporting front seat (31) and a supporting rear seat (36) sleeved in the supporting front seat (31) and fixedly connected with the supporting front seat;

The supporting backseat (36) comprises a backseat end part (361), a backseat connecting part (362), a plurality of supporting claws (363) and a plurality of positioning convex blocks (364) arranged on the backseat connecting part (362) between every two supporting claws (363), wherein the end part of each supporting claw (363) is provided with a grappling hook (3631);

a plurality of outer sleeve clamping holes (253) are circumferentially arranged near the second end of the outer sleeve (25); a plurality of outer sleeve positioning grooves (254) are circumferentially arranged at the second end of the outer sleeve (25);

The second end of the outer sleeve (25) is sleeved in the supporting front seat (31), the outer sleeve clamping hole (253) is correspondingly clamped with the grapple hook (3631), and the outer sleeve positioning groove (254) is correspondingly clamped with the positioning convex block (364).

7. The ultrasonic knife nozzle-closing driving device according to claim 6, wherein the outer sleeve clamping holes (253) and the outer sleeve positioning grooves (254) are staggered in the circumferential direction of the outer sleeve (25).

8. The ultrasonic knife nozzle-closing driving device according to claim 6 or 7, wherein the supporting front seat (31) comprises a front seat end portion (311) and a front seat connecting portion (312) which are connected, and a front seat center hole (313) which is communicated is arranged at the centers of the front seat end portion (311) and the front seat connecting portion (312);

The pressure nozzle elastic assembly (3) further comprises a first elastic piece (32), a first support (33), a second support (35) and a second elastic piece (34), wherein the first elastic piece (32), the first support (33), the second support (35) and the second support (35) are sleeved outside the front seat connecting part (312), the second elastic piece (34) is sleeved outside the first support (33) between the first support (33) and the second support (35), and the first support (33) and the second support (35) are respectively in contact with the rear seat connecting part (361);

The second end of the outer sleeve (25) is sleeved in the front seat center hole (313).

9. The ultrasonic knife nozzle closure driving device according to claim 8, wherein the first elastic member (32) is a large wave spring and the second elastic member (34) is a small wave spring.

10. The ultrasonic knife nozzle closing driving device according to claim 8, wherein the second bracket (35) comprises a second base (351) and a second abutting portion (352) which are connected, one side of the second base (351) abuts against the second elastic member (34), the other side of the second base abuts against the clamping groove (411), and the second abutting portion (352) abuts against the rear seat end portion (361).

11. The ultrasonic knife nozzle-closing driving device according to claim 1, wherein an outer sleeve strip hole (252) is arranged at the second end of the outer sleeve (25), an inner sleeve pin hole (242) is arranged at the second end of the inner sleeve (24), a knife bar pin hole (213) is arranged at the second end of the knife bar (21), and a sleeve pin (27) respectively penetrates through the outer sleeve strip hole (252), the inner sleeve pin hole (242) and the knife bar pin hole (213) to connect the outer sleeve (25), the inner sleeve (24) and the knife bar (21) into a whole.

12. The ultrasonic knife nozzle closure drive of claim 11, wherein the second end of the inner sleeve (24) is provided for extending beyond the second end of the outer sleeve (25).