CN210673387U

CN210673387U - Clip applier

Info

Publication number: CN210673387U
Application number: CN201921125532.2U
Authority: CN
Inventors: 姚大强; 赵宁; 谢探一; 连上阳; 董晓宇; 王贤玲
Original assignee: Shandong Weray Surgical Medical Products Co ltd
Current assignee: Shandong Weray Surgical Medical Products Co ltd
Priority date: 2019-07-17
Filing date: 2019-07-17
Publication date: 2020-06-05
Anticipated expiration: 2029-07-17

Abstract

The utility model discloses a clip applier, be equipped with the transmission pull rod of keeping silent including the distal end, the periphery cover of transmission pull rod is equipped with the body of rod, but the periphery cover of the body of rod is equipped with circumferential direction, and the track body of axial locking, the track body is equipped with the annular clearance of uniform thickness that extends along body of rod circumference, the terminal surface of clearance is less than 90 degrees with the contained angle of the axis of the body of rod, be equipped with the side brace fore-set with body of rod circumference locking in the clearance, the side brace fore-set is connected to the side brace near-end, the distal end is connected with the distal end of crooked subassembly, the distal end of crooked subassembly is fixed with keeping silent, the near-end is for. The application provides a clip applier's keeping silent can the bending swing, consequently in the operation, to bleeding position or other pipeline need close the condition, the clip applier can demand to adjust the crooked form of self for the ligature is pressed from both sides and is sent to required ligature position.

Description

Clip applier

Technical Field

The utility model relates to the technical field of medical equipment, more specifically say, relate to a execute clamp.

Background

At present, the common ligation clip is used for temporarily or permanently sealing the blood vessel, the ligation clip needs to be clamped and installed by means of a clip applier when in use, specifically, an operator utilizes the clip applier to take the ligation clip out of a placing box and sends the ligation clip to the appointed ligation part to complete the ligation of the ligation clip to the required tissue.

The traditional clip applier comprises a jaw with a far end capable of being operated to clamp a ligation clip, a transmission pull rod capable of actuating the jaw, a handle and a rotating button capable of enabling the far end jaw to move 360 degrees, and the clip applier with the structure can be matched with the ligation clip to realize a ligation function. However, for some ligation sites that are relatively narrow or in a relatively concealed position, the conventional clip applier cannot deliver the clip directly to the ligation site, which makes the surgical procedure difficult.

In view of the above, it is an urgent need to solve the problem of providing a clip applier which is convenient to operate.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing an executing clamp, it can control the bending of keeping silent, and the simple operation is applicable to constrictive operation passageway.

In order to achieve the above object, the present invention provides the following technical solutions:

the utility model provides a clip applier, includes that the distal end is equipped with the transmission pull rod of keeping silent, the periphery cover of transmission pull rod is equipped with the body of rod, the periphery cover of the body of rod is equipped with can be relative the track body of rod circumferential direction rotation, and axial locking, the track body is equipped with the edge the annular clearance of uniform thickness that body of rod circumferential direction extends, the terminal surface of clearance with the contained angle of the axis of the body of rod is less than 90 degrees, be equipped with in the clearance of activity with the side brace fore-set of body of rod circumferential direction locking, the side brace near-end is connected the side brace fore-set, distal end and the distal end of flexible crooked subassembly are connected, crooked subassembly the distal end with keep silent fixed, the near-end for body of.

Preferably, there are two side brace top pillars, and the central angle of the two corresponding to the circumferential direction of the rod body is 180 degrees.

Preferably, the track body is located including the cover the periphery of the body of rod, can synchronous pivoted inner cam disc and outer knob, the distal end of inner cam disc, the near-end of outer knob is equipped with first inclined plane, second inclined plane respectively, first inclined plane with the relative distribution of second inclined plane forms the clearance.

Preferably, the first inclined surface or the second inclined surface is provided with a plurality of clamping grooves, the axis of each clamping groove extends along the radial direction of the rod body, the clamping grooves are distributed at equal angles along the circumferential direction of the rod body, and the end parts, far away from the rod body, of the side brace top pillars are arranged in the clamping grooves; the device also comprises an elastic element arranged at the far end of the outer rotating button or at the near end of the inner cam disc.

Preferably, an inner cam disc mounting groove is formed in the proximal end of the outer rotating knob, and the inner cam disc is arranged in the inner cam disc mounting groove.

Preferably, the device also comprises a protection tube and a rotating button, wherein the rotating button is fixedly connected with the rod body, and the far end of the rotating button is abutted against the near end of the outer rotating button; the protection tube cover is located the periphery of the body of rod, the near-end of protection tube with the distal end of outer knob offsets, the distal end of protection tube with the near-end of crooked subassembly offsets.

Preferably, the near end of the inner cam disc is provided with an elastic piece mounting groove, the elastic piece is a spring which extrudes the inner cam disc towards the far end, and the elastic piece is arranged in the elastic piece mounting groove and sleeved on the periphery of the rod body.

Preferably, the bending assembly comprises a plurality of connecting blocks which are sequentially distributed along the axial direction of the rod body, the far end and/or the near end of each connecting block are/is provided with conical surfaces protruding towards the outside and adjacent to the connecting blocks, the connecting blocks are connected through pin shafts at the ends and are provided with side holes corresponding to the positions, and the side braces sequentially penetrate through the side holes and are fixed with the connecting blocks at the far end.

Preferably, the connecting block comprises a near-end connecting block, a middle connecting block and a far-end connecting block, the far end of the near-end connecting block, the near end of the middle connecting block, the far end of the middle connecting block and the near end of the far-end connecting block are respectively provided with the conical surfaces, all the conical surfaces have the same taper, and the near end of the near-end connecting block and the far end of the far-end connecting block are respectively flat end surfaces.

Preferably, the transmission pull rod is connected with the jaw through a push piece, each connecting block is provided with a middle groove corresponding to the position, and the push piece is arranged in the middle groove.

The utility model provides a clip applier includes the transmission pull rod, locate keeping silent of its distal end, locate the body of rod of its periphery, the track body of rod periphery is located to the cover, crooked subassembly, the track body can be for body of rod circumferential direction, and the axial locking, the track body is equipped with annular, and the clearance of terminal surface and body of rod out of plumb, be equipped with the side brace fore-set with body of rod circumferential direction locking in the clearance, the side brace fore-set is connected to the side brace near-end, the distal end is connected with crooked subassembly's distal end, crooked subassembly near-end and body of rod axial locking, the distal end is fixed with keeping silent.

In the course of the work, the track body rotates around the body of rod, and its inside clearance that moves this moment rotates around the body of rod, because the side brace fore-set can't rotate, therefore the side brace fore-set can be along the axial displacement of the body of rod under clearance's effect, and then drives the side brace along body of rod axial displacement. When the side brace moves towards the proximal end of the rod body, the distal end of the bending component is close to the proximal end, the axis of the bending component bends, and the jaw swings towards the direction far away from the axis of the rod body; when the side brace is moved toward the distal end of the shaft, the distal end of the bending element is moved away from the proximal end, the axis of the bending element is straightened, and the jaws are moved toward the axis of the shaft.

The application pincers that carry out that this application provided can control crooked subassembly and take place the bending, and then drive keep silent to keeping away from the direction swing of body of rod axis, when ligature position or operation passageway are more narrow, carry out the crooked state that the pincers can adjust self according to the target form to better control ligature presss from both sides the ligature position that reaches needs, realized improving the effect of carrying out pincers simple operation nature and application scope.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a schematic structural view of a clip applier provided by the present invention;

fig. 2 is an exploded view of the clip applier provided by the present invention;

fig. 3 is a schematic structural diagram of the track body provided by the present invention;

fig. 4 is a side view of an inner cam plate provided by the present invention;

FIG. 5 is a schematic view of the structure in the direction A of FIG. 4;

fig. 6 is a partially installed cross-sectional view of a clip applier provided by the present invention;

fig. 7 is a schematic structural diagram of a bending assembly provided by the present invention;

fig. 8 is a schematic structural view of a middle connecting block provided by the present invention;

fig. 9 is a sectional view taken along line B-B in fig. 8.

The reference numerals in figures 1 to 9 are:

the device comprises an upper jaw 1, a lower jaw 2, a connecting rod body 3, a bending component 4, a protection tube 5, an outer rotating button 6, a rotating button 7, a purging interface 8, a fixed handle 9, a movable handle 10, a transmission pull rod 11, a push sheet 12, a pull rod 13, a side brace top post 14, an inner cam disc 15, an elastic piece 16, a rotating support piece 17, a limiting ejector pin 18, a sealing ring 19, a spring 20, a tail adjusting piece 21, a top thread 22, a side brace 23 and a rod body 24;

the first bevel 1501, the slot 1502, the bar-shaped protrusion 1503, the distal connection block 401, the middle connection block 402, the proximal connection block 403, the pin hole 4021, the middle groove 4022, and the side hole 4023.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The core of the utility model is to provide a clip applier, which can control the bending of the jaw, thereby being applicable to narrow operation channels.

Referring to fig. 1 to 9, fig. 1 is a schematic structural view of a clip applier provided in the present invention; fig. 2 is an exploded view of the clip applier provided by the present invention; fig. 3 is a schematic structural diagram of the track body provided by the present invention; fig. 4 is a side view of an inner cam plate provided by the present invention; FIG. 5 is a schematic view of the structure in the direction A of FIG. 4; fig. 6 is a partially installed cross-sectional view of a clip applier provided by the present invention; fig. 7 is a schematic structural diagram of a bending assembly provided by the present invention; fig. 8 is a schematic structural view of a middle connecting block provided by the present invention; fig. 9 is a sectional view taken along line B-B in fig. 8.

The application provides a clip applier, be equipped with the transmission pull rod 11 of keeping silent including the distal end, the periphery cover of transmission pull rod 11 is equipped with the body of rod 24, the periphery cover of the body of rod 24 is equipped with body of rod 24 circumference relatively rotatory, and the track body of axial locking, the track body is equipped with the annular clearance of uniform thickness along body of rod 24 circumference extension, the terminal surface of clearance and the contained angle of the axis of the body of rod 24 are less than 90 degrees, be equipped with the side brace fore-set 14 with body of rod 24 circumference locking in the clearance, side brace fore-set 14 is connected to side brace 23 near-end, the distal end is connected with the distal end of flexible axis crooked subassembly 4, the distal end of crooked subassembly 4 is fixed with keeping silent, the near-end is for body of.

Specifically, the proximal end refers to the end close to the hand of the operator during operation, and the distal end refers to the end far away from the hand. The near end of the transmission pull rod 11 is connected with a handle, the far end is connected with a jaw, and the control handle can drive the jaw to open and close.

The present application provides a clip applier which is primarily improved in that it is designed with a track body and a flexure assembly 4, but which has the basic function of a conventional clip applier, and for ease of understanding, the description first refers to the basic structure of the clip applier.

In order to realize the basic function of the clip applier, the clip applier can adopt the following structure:

the movable handle 10 is rotatably connected with the fixed handle 9 through a pin shaft. One end of the movable handle 10 close to the pin shaft is provided with a bulge which is used for contacting with the surface of the middle concave part of the tail adjusting piece 21 far away from one end of the ball head to form a cam structure and pushing the tail adjusting piece 21 to move towards the far end along the axis of the transmission pull rod 11.

The tail adjusting piece 21 is fixedly connected with the transmission pull rod 11. There are various ways to connect the two, for example: the tail adjusting piece 21 is provided with an internal thread or an inner hole structure, and correspondingly, the near end of the transmission pull rod 11 is provided with an external thread or a columnar structure; according to the actual assembly condition, the length of the transmission pull rod 11 entering the inner hole of the tail adjusting piece 21 can be adjusted, and finally the transmission pull rod and the tail adjusting piece are firmly fastened. In addition, the two can be held tight against loosening by spot welding or by plug staking or other means.

The transmission pull rod 11, the push sheet 12 and the pull rod 13 are connected in sequence. The three connection modes are various, for example: the far end of the driving pull rod 11 is provided with a groove or a hole-shaped structure, so that the protruding structure at the near end of the push sheet 12 can be just inserted into the groove or the hole of the driving pull rod, and the connection along the axial direction is realized. The proximal end of the pull rod 13 is also provided with a groove or hole-shaped structure, and the protruding structure at the distal end of the push sheet 12 can be inserted into the proximal end of the pull rod 13 to realize axial connection. The distal end of the pull rod 13 is provided with a hole or a groove, and a pin inserted in the hole or the groove can slide in two opposite long grooves at the proximal ends of the upper jaw 1 and the lower jaw 2, so that the upper jaw 1 and the lower jaw 2 are limited and immovable in the front end hole, and the closing action is realized.

The push plate 12 is made of flexible material, preferably spring steel sheet, one or more pieces; or preferably a polymeric material having a high tensile strength and fatigue strength.

When the movable handle 10 is released, the spring 20 which is originally squeezed between the distal end surface of the tail adjusting member 21 and the inner end surface of the distal hole of the fixed handle 9 pushes the tail adjusting member 21 to move towards the proximal end under the action of the counter-pressure force, so that the transmission pull rod 11 moves towards the proximal end to realize the opening of the upper jaw 1 and the lower jaw 2.

The above is a transmission connection mode capable of completing the basic function of the clip applier, and it can be understood that the clip applier can have a plurality of different structures to achieve the basic function.

The bending of the bending component 4 mainly refers to the bending deformation, and when in actual connection, the connecting rod body 3 of the jaw is connected with the bending component instead of the upper jaw 1 and the lower jaw 2. The proximal end of the bending element 4 is axially locked relative to the shaft 24, i.e. the proximal end of the bending element 4 and the shaft 24 are not axially movable relative to each other.

The rod body 24 is a tubular structure and is positioned between the transmission pull rod 11 and the track body, the track body and the rod body 24 are nested, the track body and the rod body can rotate relatively, and the track body and the rod body are relatively static in the axial direction.

The movable gap is of an annular structure sleeved on the periphery of the rod body 24, and the equal-thickness finger movable gap is parallel to the end face of the near end and the end face of the far end. The angle between the end face of the play and the axis of the rod 24 being smaller than 90 degrees means that the proximal end face of the play is not perpendicular to the rod 24, i.e. the proximal end face of the play has a certain span in the axial direction of the rod 24.

The side brace posts 14 are located in the play and the circumferential locking means that the side brace posts 14 cannot rotate relative to each other around the outer circumference of the rod body 24. the circumferential locking may be achieved in a variety of ways, for example, the outer circumference of the rod body 24 is provided with an axially extending groove in which the side brace posts 14 are constrained to move only axially relative to the rod body 24 and cannot rotate around the rod body 24.

The proximal end of the side brace 23 is fixed to the side brace top post 14 so as to be moved by the side brace top post 14. The side braces 23 may be attached to the side brace posts 14 in a variety of ways, for example, the end of the side brace posts 14 adjacent the rod body 24 may be provided with a raised structure that mates with a groove in the proximal end of the side brace 23. Of course, the two may be fixed by means of adhesion or the like. The material of the side braces 23 is preferably a thin sheet of spring steel or a high tensile strength rope or wire.

In the using process, the track body is controlled to rotate relative to the rod body 24, so that the movable gap inside the track body deflects around the axis of the rod body 24, and the side brace top pillar 14 cannot rotate, so that the side brace top pillar 14 can move along the axial direction of the rod body 24 under the action of the proximal end face and the distal end face of the movable gap, and further the side brace 23 is driven to move integrally along the axial direction of the rod body 24. If the top pillar 14 of the side brace moves towards the near end, the bending component 4 connected with the side brace 23 bends, and then the jaw is driven to swing towards the direction far away from the axis of the rod body 24; if the side brace jack 14 is moved distally, the flexure assembly 4 straightens and the jaws swing closer to the axis of the rod 24.

The application provides a tong keep silent except that 360 degrees rotations, can also crooked swings, consequently, in the operation, especially among the minimal access surgery, need close the condition to bleeding position or other pipelines, the application that the tong that this application provided can demand adjustment self crooked form, and then convenient ligature with its centre gripping is pressed from both sides and is sent to the ligature position of needs, and the required space of the tong that should execute is little, and the space exploration scope is big, and the operation damage is little.

Further, in order to optimize the using effect of the clip applier, in a preferred embodiment provided by the present application, there are two side brace top pillars 14, and the central angle of the two corresponding to the circumference of the rod body 24 is 180 degrees, and the side brace top pillars 14 are connected to the side braces 23 in a one-to-one correspondence. Specifically, the two side braces 23 are oppositely arranged and symmetrically distributed on two sides of the rod body 24, in the process that the track body rotates relative to the rod body 24, the moving directions of the two side brace top pillars 14 are opposite, and when the track body rotates clockwise and anticlockwise, the swinging directions of the jaws are opposite, so that the operation flexibility of the clip applier is further improved. In addition, the bending and resetting of the tong head can be realized by rotating the track body for one circle.

Optionally, the track body may have various structures, for example, in an embodiment of the track body, the track body includes two semi-cylindrical track sub-blocks, and the two track sub-blocks are fixed to form a cylindrical track body sleeved on the outer periphery of the rod body 24.

Optionally, in another embodiment of the track body provided in the present application, the track body includes an inner cam disc 15 and an outer rotating knob 6, both of which are sleeved on the outer periphery of the rod body 24 and can rotate synchronously, a distal end of the inner cam disc 15 and a proximal end of the outer rotating knob 6 are respectively provided with a first inclined surface 1501 and a second inclined surface, and the first inclined surface 1501 and the second inclined surface are distributed relatively to form a moving gap.

Specifically, the inner cam plate 15 and the outer knob 6 are circumferentially locked, i.e., they cannot rotate relative to each other, and can only rotate synchronously around the rod body 24. The inner cam disc 15 and the outer rotation knob 6 are preferably cylindrical structures, which are mounted directly from the end of the rod body 24 to a designated position when assembled. The first inclined plane 1501 and the second inclined plane are oppositely arranged and spaced at a certain distance, and a cavity between the first inclined plane 1501 and the second inclined plane is a movable gap, so that the first inclined plane 1501 and the second inclined plane are respectively a proximal end face and a distal end face of the movable gap and are distributed in parallel.

It will be appreciated, with reference to FIG. 4, that the difference in height between the high and low points on the first ramp 1501 is the distance of travel of the side brace 23 that needs to be pulled to cause the curving assembly 4 to curve through the maximum angle, and is also the maximum distance that can be achieved by the two side brace posts 14 in the axial direction of the mast body 24.

Optionally, in order to improve the limiting effect of the rail body on the side brace top pillar 14, in an embodiment provided by the present application, the first inclined surface 1501 or the second inclined surface is provided with a plurality of slots 1502, an axis of each slot 1502 extends along a radial direction of the rod body 24, the plurality of slots 1502 are distributed at equal angles along a circumferential direction of the rod body 24, and an end portion of the side brace top pillar 14 away from the rod body 24 is disposed in the slot 1502; further comprising a resilient member 16 provided at the distal end of the outer knob 6 or at the proximal end of the inner cam disc 15.

Specifically, the catch 1502 is adapted to receive a post projection of the side brace top 14, wherein the post projection is located at an end of the side brace top 14 distal from the rod body 24. Preferably, the first inclined plane 1501 and the second inclined plane are both provided with the locking grooves 1502, and the locking grooves 1502 of the first inclined plane 1501 and the second inclined plane are arranged in a one-to-one opposite manner, and of course, the locking grooves 1502 may be alternatively arranged in the first inclined plane 1501 and the second inclined plane. Referring to fig. 5, the first inclined surface 1501 is provided with the slots 1502, the slots 1502 on the first inclined surface 1501 are distributed at equal angles, and P in fig. 5 indicates an included angle between adjacent slots 1502.

The resilient member 16 is primarily used to compress the rail body so that the side brace posts 14 snap into the slots 1502 after the rail body is rotated into position. The elastic member 16 is disposed at the proximal end of the inner cam plate 15 for explanation, and the operation principle of the elastic member 16 disposed at the distal end of the outer rotation knob 6 is similar, and the description of this embodiment is omitted. During operation, when the operator turns the outer knob 6, the cylindrical protrusion of the side brace jack 14 will be forced out of the slot 1502, causing the inner cam disc 15 to move proximally while compressing the resilient member 16; when the post projection of the side brace top 14 falls into the notch 1502 again, the notch 1502 locks the post projection of the side brace top 14 under the action of the resilient member 16, thereby maintaining the flexure assembly 4 in a flexed condition. The clamping groove 1502 can accurately control the bending angle of the bending component 4, and meanwhile, the bending state of the bending component 4 is kept stable, and the stop after bending is guaranteed.

Optionally, in order to facilitate controlling the rotation of the track body, in an embodiment provided by the present application, an inner cam plate mounting groove is formed at a proximal end of the outer rotating knob 6, and the inner cam plate 15 is disposed in the inner cam plate mounting groove. In actual operation, an operator only needs to rotate the outer rotating button 6 to control the movement of the side brace top pillar 14, and the operation is more convenient. Alternatively, the outer circumference of the outer knob 6 may be provided with a texture for increasing the frictional force.

It should be noted that there are various ways to circumferentially lock the inner cam plate 15 and the outer rotary knob 6, for example, a strip-shaped protrusion 1503 is provided on the outer circumference of the inner cam plate 15, and a groove is provided on the sidewall of the inner cam plate mounting groove of the outer rotary knob 6, and the strip-shaped protrusion 1503 is inserted into the groove. Or the two are fixed by adopting the modes of bolt connection, bonding, pin connection and the like.

Optionally, in an embodiment provided by the present application, the present application further includes a protection tube 5 and a rotation knob 7, the rotation knob 7 is fixedly connected to the rod body 24, and a distal end of the rotation knob 7 abuts against a proximal end of the outer rotation knob 6; the periphery of the rod body 24 is located to the protection tube 5 cover, and the near-end of protection tube 5 offsets with the distal end of outer knob 6, and the distal end of protection tube 5 is fixed with the near-end of crooked subassembly 4.

Specifically, the rotary knob 7 is provided with a hole, and the purge port 8 is inserted into the hole and is firmly connected to the hole of the rod body 24, so that the rotary knob 7 and the rod body 24 do not move relatively. The protection tube 5 is a hollow thin-wall tube, which is sleeved on the periphery of the rod body 24, the far end of the protection tube 5 is fixedly connected with the near end of the bending component 4, the near end of the protection tube 5 is provided with a raised edge, the raised edge is abutted against the far end surface of the outer rotating knob 6, and the near end surface of the outer rotating knob 6 is contacted with the far end surface of the rotating knob 7, so that the outer rotating knob 6 can only rotate around the rod body 24 and cannot move along the axial direction. It is understood that the rotary knob 7 and the outer rotary knob 6 are relatively stationary in the axial direction of the rod body 24, but the rotary knob 7 can relatively rotate with respect to the outer rotary knob 6.

Optionally, in an embodiment provided by the present application, the inner cam plate 15 is provided with an elastic member mounting groove at a proximal end thereof, the elastic member 16 is a spring sleeved on the outer periphery of the rod body 24, a distal end surface of the elastic member 16 abuts against a proximal end surface of the inner cam plate 15 and presses the inner cam plate 15 toward the distal end thereof, and the elastic member 16 is disposed in the elastic member mounting groove. It can be seen that the inner cam plate 15 and the elastic member 16 are both disposed in the inner cam plate mounting groove of the outer rotary knob 6, making the outer structure of the clip applier simpler.

Further, on the basis of any one of the above embodiments, the bending assembly 4 includes a plurality of connecting blocks sequentially distributed along the axial direction of the rod body 24, the distal end and/or the proximal end of each connecting block is provided with a conical surface protruding outwards, adjacent connecting blocks are connected by a pin shaft at the end part, each connecting block is provided with a side hole 4023 corresponding to the position of the connecting block, and the side brace 23 sequentially penetrates through each side hole 4023 and is fixed with the connecting block at the distal end.

Specifically, the connection blocks may be divided into a proximal connection block 403, a middle connection block 402, and a distal connection block 401 according to installation positions. The distal end fixing protrusion block 401 is connected to the proximal end of the connecting rod body 3 of the jaw, and the proximal end connecting block 403 is connected to the distal end of the rod body 24, and the connection mode may be welding or screw connection. The number of the middle connection blocks 402 is adjusted according to the required bending degree and the assembling process, and preferably, the number is not less than 3.

The adjacent connecting blocks are connected through pin shafts at the end parts, and pins are inserted into pin holes 4021 of the adjacent connecting blocks. As can be appreciated. The connection mode is not a unique mode, and can be connected in a plurality of structural limiting modes only by ensuring that the adjacent connection blocks can rotate relatively.

The conical surface can be arranged on the end surface of part or all of the connecting blocks, the conical surface is convex towards the direction of the adjacent connecting block, preferably the convex vertex of the conical surface is used as a boundary line, and two sides are inclined at the same angle. In the actual design process, it is preferable that the distal end of the proximal connection block 403, the proximal end of the middle connection block 402, the distal end of the middle connection block 402, and the proximal end of the distal connection block 401 are respectively provided with a conical surface, all the conical surfaces have the same taper, and the proximal end of the proximal connection block 403 and the distal end of the distal connection block 401 are respectively flat end surfaces.

When the connecting blocks with the structure are adopted, the angle range of relative rotation of the two adjacent connecting blocks is 0-2 m degrees, the maximum angle of bending of all the connecting blocks is n m degrees, and n is one less value than that of all the connecting blocks. For example, if the inclination angle of the tapered surface of the convex piece is 7.5 degrees, m is 15 degrees, and the maximum bending angle of all the connection pieces is (5-1) × 15 ═ 60 degrees.

Each connector block is provided with a side hole 4023 in the form of a hole or a groove in the axial direction, a side brace 23 is inserted into the side hole 4023, and the side brace 23 is inserted into the side hole 4023 of the distal connector block 401 and is fixed by welding or other means.

When two side brace posts 14 are provided, and correspondingly, two symmetrical side holes 4023 are required in each connector block, the distal connector block 401 can be deflected to the flex side by pulling on one side of the side brace 23, and the flex assembly 4 can be angled to flex when the side brace 23 is moved proximally to a defined position. Meanwhile, the side braces 23 on the two sides cannot move in the same direction at the same time under the action of the movable gap, and the movement of the two is always opposite.

Optionally, the transmission pull rod 11 is connected with the jaws through push pieces 12, each connecting block is provided with an intermediate groove 4022 along the axial direction, each connecting block is provided with an intermediate groove 4022 corresponding to the position of the connecting block, the push pieces 12 are arranged in the intermediate grooves 4022, and the push pieces 12 can move in the intermediate grooves 4022 along the axial direction.

Optionally, in order to optimize the using effect of the clip applier, in an embodiment provided by the present application, the rotating button 7 is sleeved on the outer periphery of the rod body 24 and is fixedly connected with the rod body 24 through the purge joint 8. The near end of the rod body 24 is provided with a stepped hole, the first stepped hole is provided with a sealing ring 19, and the second stepped hole is internally provided with a rotary supporting piece 17. The rotating support 17 has a relatively smooth surface or is made of a material having self-lubricating properties, such as a self-lubricating bearing or the like.

The distal shaft of the fixed handle 9 is inserted into the hole of the rotating support member 17, and the first step at the distal end of the fixed handle 9 abuts against the proximal end surface of the rotating support member 17 and the proximal end surface of the rod body 24. The rotation limiting thimble 18 is composed of a compression spring and a top block, one end of the compression spring is hermetically fixed in a radial hole of the rotating button 7, and the other end of the compression spring is abutted against the plane of the top block. The convex end of the top block is provided with a circular arc angle for removing materials, and one surface of the convex end far away from the circular arc angle is propped against the convex near end surface outside the far-end rod body 24 of the fixed handle 9. This design has the advantage that the knob 7 does not tend to move away from the handle in the axial direction of the shaft 24, thereby ensuring that the handle is axially fixed to the shaft 24.

When disassembly and maintenance are needed, all the distal end components including the rotating button 7 can be conveniently disassembled by disassembling the jackscrew 22 to jack up the thimble of the rotating limiting thimble 18. In addition, the clip applier provided by the application can adopt the modes of washing, disinfection, high-temperature disinfection and the like, and is simple to use repeatedly or disposable.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The above details are provided for the clip applier provided by the present invention. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.

Claims

1. A clip applier, which comprises a transmission pull rod (11) with a clip mouth at the far end, and is characterized in that, the periphery of the transmission pull rod (11) is sleeved with a rod body (24), the periphery of the rod body (24) is sleeved with a track body which can rotate circumferentially relative to the rod body (24) and is locked axially, the track body is provided with an annular movable gap with equal thickness extending along the circumferential direction of the rod body (24), the included angle between the end surface of the movable gap and the axial line of the rod body (24) is less than 90 degrees, a side brace top pillar (14) which is circumferentially locked with the rod body (24) is arranged in the movable gap, the near end of the side brace (23) is connected with the side brace top pillar (14), the far end is connected with the far end of the bendable bending component (4), the distal end of the bending component (4) is fixed with the jaw, and the proximal end is axially locked relative to the rod body (24).

2. The clip applier according to claim 1, wherein there are two side brace posts (14) and the corresponding central angle of the two is 180 degrees in the circumferential direction of the rod body (24).

3. The clip applier according to claim 1, wherein the track body comprises an inner cam disc (15) and an outer rotary knob (6) which are sleeved on the outer periphery of the rod body (24) and can synchronously rotate, a distal end of the inner cam disc (15) and a proximal end of the outer rotary knob (6) are respectively provided with a first inclined surface (1501) and a second inclined surface, and the first inclined surface (1501) and the second inclined surface are distributed oppositely to form the movable gap.

4. The clip applier according to claim 3, wherein said first bevel (1501) or said second bevel is provided with a plurality of slots (1502), an axis of each of said slots (1502) extends in a radial direction of said rod (24), a plurality of said slots (1502) are equiangularly distributed along a circumferential direction of said rod (24), an end of said side brace top pillar (14) remote from said rod (24) is located in said slot (1502); and the elastic element (16) is arranged at the far end of the outer rotating button (6) or at the near end of the inner cam disc (15).

5. Applicator clamp according to claim 4, characterized in that the proximal end of the outer rotation knob (6) is provided with an inner cam disc mounting slot in which the inner cam disc (15) is provided.

6. The clip applier according to claim 5, further comprising a protective tube (5) and a rotation knob (7), said rotation knob (7) being fixedly connected to said rod body (24), a distal end of said rotation knob (7) abutting a proximal end of said outer rotation knob (6); the periphery of the rod body (24) is located in a sleeved mode through the protection tube (5), the near end of the protection tube (5) abuts against the far end of the outer rotating button (6), and the far end of the protection tube (5) abuts against the near end of the bending assembly (4).

7. Clip applier according to claim 4, wherein said inner cam disc (15) is provided at its proximal end with a spring mounting groove, said spring (16) is a spring pressing said inner cam disc (15) distally, said spring (16) is provided in said spring mounting groove and is sleeved on the outer circumference of said rod body (24).

8. Clip according to any of claims 1 to 7, wherein said bending member (4) comprises a plurality of connecting pieces arranged one after the other in the axial direction of said rod (24), the distal and/or proximal ends of said connecting pieces being provided with outwardly convex tapers, adjacent connecting pieces being connected by a pin at the end, each of said connecting pieces being provided with a corresponding lateral hole (4023), said side brace (23) passing through each of said lateral holes (4023) in turn and being fixed to the distal connecting piece.

9. The clip applier according to claim 8, wherein the connecting blocks comprise a proximal connecting block (403), a middle connecting block (402), and a distal connecting block (401), wherein the distal end of the proximal connecting block (403), the proximal end of the middle connecting block (402), the distal end of the middle connecting block (402), and the proximal end of the distal connecting block (401) are respectively provided with the conical surfaces, all of the conical surfaces have the same taper, and the proximal end of the proximal connecting block (403) and the distal end of the distal connecting block (401) are respectively flat end surfaces.

10. The clip applier according to claim 9, wherein said drive link (11) is connected to said jaws by means of push tabs (12), each of said connecting pieces being provided with a corresponding intermediate groove (4022), said push tabs (12) being provided in said intermediate grooves (4022).