KR20180067385A

KR20180067385A - clip applier having jaw guide

Info

Publication number: KR20180067385A
Application number: KR1020170021508A
Authority: KR
Inventors: 전성태; 정오
Original assignee: (주) 써지코어
Priority date: 2016-12-12
Filing date: 2017-02-17
Publication date: 2018-06-20
Also published as: KR101930414B1; KR20180067386A; KR101762761B1; KR101966939B1; WO2018110784A1

Abstract

A clip applier having a jaw member guide part according to the present invention comprises a handle housing and a tubular member installed in the handle housing and having a predetermined length and diameter. The present invention further comprises a jaw operation unit, a clip loading unit, and an operation unit. The jaw operation unit includes a jaw member, a slider, and a guide part. The jaw member is disposed in the tubular member and includes a rod extended from the handle housing, a base part installed on the rod, and first and second jaws provided on the ends of elastic support parts extended in parallel from the base part and protruding toward the end of the rod. The slider is installed to be slid on the rod to open and close the first and second jaws of the jaw member. The guide part is installed on the slider to prevent the base part of the jaw member from being separated from the rod and guides the movement of the slider along the jaw member. The clip loading unit includes: a guide main body part installed in the tubular member at the lower side of the jaw operation unit and provided with a clip guide part at an end thereof for guiding a clip toward the first and second jaws; a cartridge unit provided on the guide main body part for supplying the clip; a clip loading member moving the clip supplied from the cartridge unit along the clip guide part to load the clip on the clip support part of the first and second jaws; and a cover member coupled to the guide main body part to guide the transport of the clip loading member. The operation unit moves the slider forwards when a lever installed on the handle housing moves backwards, and moves the first and second jaws in the closing direction to ligate the clip. When the lever moves forward, the operation unit supplies the clip to the clip support part by moving the clip loading member forwards. The clip applier having a jaw member guide part according to the present invention can prevent the jaw member for ligation of the clip from being separated from the rod.

Description

Clip applier having a jaw guide "

The present invention relates to a clip applicator, and more particularly, to a clip applicator that prevents separation of a coupling from a rod so as to prevent a malfunction when supplying a clip and ligation of a clipping clip to a blood vessel, a duct, To a clip applicator having a jaw member guiding portion for allowing the jaw member guide portion to be smoothly moved along the guide portion.

In general, surgical operations have been dramatically developed through the practice of laparoscopic and endoscopic surgical procedures such as laparotomy, gastrectomy, buccal caudate resection, and hernia repair.

These procedures are accomplished through a trocar assembly which is a surgical instrument used to perforate the body cavity. The trocar typically receives a sharp closure tip and a trocar tube or cannula. The trocar cannula is inserted into the skin and approaches the body cavity using a closure tip penetrating the skin. After penetration, the occlusion tip is removed and the trocar cannula remains within the body. These cannulas place the surgical instrument in place. One of the surgical instruments commonly used in trocar cannula is a surgical clip applier for ligating a portion of a vessel, duct, shunt or body tissue during surgery.

Most clip appliers typically have handles with long shafts having a pair of movable opposing jaws formed at one end thereof to hold and form a ligation clip therebetween. The jaws are located around the vessel or duct, and the clips collide or form on the vessel by closing the jaws.

Korean Patent Publication No. 2006-01085363 discloses a mechanism for advancing and aligning a surgical clip. The disclosed clip applier includes a handle housing having a trigger coupled thereto, a long shaft extending from the handle housing and having a counter jaw formed at a distal end thereof and movable between an open position and a closed position, A clip advancing assembly for advancing at least one clip through the elongate shaft to position a clip between the opposing jaws; and a spring assembly disposed within the handle housing for transferring movement from the trigger to the clip advancing assembly, Has a flexible link that advances at least one clip in response to movement of the trigger.

However, such a clip applier has a problem of occurrence of jam and supply trouble of clip during jaw operation. And there is a problem that the ligation of the clip is not accurately performed due to the deviation of the ligation of the tissue due to the jaw. Particularly, when the base of the jaw is shaken or deviated from the supporting portion, the clipping force by the clip becomes worse.

Korean Patent Registration No. 1288789 discloses a surgical clip applier latch mechanism. Korean Patent No. 2006-108560 discloses a force limiting mechanism for a medical device, and Korea Patent Publication No. 2006-0108559 discloses a surgical clip applier method.

Korea Patent Publication No. 2006-01085363 Korea Patent No. 1288789 Korea Patent Publication No. 2006-0108559

The object of the present invention is to prevent a base of a plastic deformation member of a ligation clip for ligating a body part from being detached from the rod and to prevent the slider from moving out of the rod when the slider is moved along the jaw member, And a jaw member guide portion that can prevent the jaw member from being detached from or displaced from the clip guide.

According to an aspect of the present invention, there is provided a clip applicator having a jaw member guide portion, comprising: a handle housing; a tubular member installed in the handle housing and having a predetermined length and diameter;

A rod extending from the handle housing, a base provided on the rod, and first and second jaws provided on ends of the elastic supports extended from the base to extend from the end of the rod, A jaw member provided,

A slider provided slidably on the rod for opening and closing the first and second jaws of the jaw member; a slider provided on the slider to prevent the base of the jaw member from being separated from the rod and guiding the movement of the slider along the jaw member A jaw operating unit having a guide portion;

A guide body portion provided in a lower tube member of the jaw operation unit and provided with a clip guide portion for guiding the clip to the first and second jaws at an end thereof; A clip loading member for moving the clip supplied from the cartridge unit along the clip guide unit and loading the clip on the clip support unit of the first and second jaws, and a cover member for guiding the movement of the clip loading member, A clip loading unit;

When the lever installed on the handle housing retracts, the slider is telegraphed to move the first and second jaws in the closing direction to ligate the clip, and when the lever is displayed, the clip loading member is advanced to feed the clip to the clip supporting portion Unit.

In the present invention, the slider may include: a jaw operating part for closing and separating the first and second jaws when the jaw member is slid along the jaw member when the sliding member is slid along the jaw member; And a slide main body part having a jaw member guide groove and formed with a long hole in the longitudinal direction so as to be able to slide relative to the rod and the jaw member.

And an auxiliary guide piece extending from the rear end of the jaw operating part to the guide groove side for guiding the elastic supporting part of the jaw member.

The guiding portion provided on the slider of the jaw operating unit includes a guide supporting portion extending from one side of the slider in the thickness direction of the jaw member and a guide piece extending in a direction parallel to the slider from the guide supporting portion and being in close contact with the base portion of the jaw member do.

The clip applier having the jaw member guide portion according to the present invention can prevent the jaw member for ligation of the clip from being detached from the rod and improve the straightness when the slider is slid along the jaw member when the slider is moved along the rod have.

1 is a perspective view of a clip applier having a jaw member guide portion according to the present invention,
2 is an exploded perspective view of a clip applicator having a jaw member guide portion according to the present invention,
3 is a cross-sectional view of a clip applier clip applicator having a jaw member guide portion according to the present invention.
Fig. 4 is an exploded perspective view showing the clip binding unit shown in Fig. 2; Fig.
5 and 6 are perspective views showing another embodiment of the clip binding unit according to the present invention,
FIG. 7 is a perspective view illustrating the clip loading unit shown in FIG. 2; FIG.
8 is a partially cutaway perspective view showing a state in which the guide body portion of the clip loading unit, the cartridge unit and the clip loading member are engaged,
Figure 9 is an exploded perspective view of the handle housing shown in Figure 2;
Fig. 10 is a cross-sectional view of the handle housing shown in Fig. 2,
11 is a side sectional view showing the operating state of the clip applicator having the jaw member guide portion,
12 is a perspective view schematically showing a state in which the clip is ligated by the jaws of the clip applier having the jaw member guide portion,
13 is a side sectional view of a clip applicator having a jaw member guide portion,
14 is an enlarged sectional view showing a state in which the clip is loaded by the clip loading unit of the clip applicator having the jaw member guide portion,
15 and 16 are diagrams showing an operating state of the clip binding safety unit of clip applier,
17 is a sectional view showing the binding confirmation completion unit of the clip applicator of the present invention,
Figs. 18 and 19 are perspective views illustrating the use state of the clip binding unit shown in Fig. 4; Fig.

A clip applier having a jaw member guide portion according to the present invention is for ligation of a blood vessel, a duct, a shunt, or a part of a body tissue during an operation without opening the lid. One embodiment thereof is shown in Figs.

A clip applicator 10 having a jaw member guide unit according to the present invention includes a handle housing 20 and a tubular member 20 having a predetermined length and a hollow portion 22, 21). The tubular member 21 is provided at one side thereof with one side fixed to the handle housing 20 and the hollow portion 22 of the tubular member 21 is provided with a rod 41, And is extended from first and second jaws (42) and (43) opposed to each other so as to be movable between an open position and a closed position and each having a clip support portion on a corresponding surface thereof to provide an elastic force in the first and second jaw opening directions A jaw member 46 having elastic supports 44 and 45 for opening and closing the first and second jaws 42 and 43 of the jaw member 46 slidably installed on the rod 41 And a clip fastening unit (40) including a fastening member (48).

The clip fastening unit 40 is provided in the hollow portion 22 of the lower tubular member 21 and has a clip guide for feeding the clip 200 to the side of the first and second jaws 42, A cartridge unit 60 provided on the guide main body 50 for supplying a clip and a clip provided from the cartridge unit 60 to the clip guide 50. [ A clip loading member 71 for moving the clip loading member along the guide 51 and loading the clip loading member on the clip supporting portions of the first and second jaws 42 and 43, , A clip loading unit (70) having a cover member (75)

The slider 48 is moved forward to move the first and second jaws 42 and 43 in the closing direction so as to ligate the clip to the lever 26, And an operation unit 100 for advancing the clip loading member 71 to feed the clip to the clip supporting portions 42a and 43a when advancing.

The clip applicator 10 having the jaw member guide portion according to the present invention constructed as described above will be described in detail as follows.

The clip applier 10 according to the present invention can be used to clip a portion of a vessel, duct, shunt or body tissue in the course of performing laparoscopic and endoscopic surgical procedures, such as gall bladder surgery, gastroenterectomy, ). &Lt; / RTI > The handle housing 20 is formed by combining two members. The handle housing 25 includes a handle 25 and a lever 26 rotatably installed on the front of the handle 25. The tubular member 21 is supported by a cap 23 provided on the front surface of the handle housing 20 so as to communicate with the inside of the handle housing 20 and has a length and a hollow portion 22 sufficient for laparoscopic procedures. The handle housing 20 is not limited to the above-described embodiments, and may be designed in various shapes.

2 to 6, the clip binding unit 40 may be formed by using a clip 200 supported by the clip supporting portions 42a and 43a of the first and second jaws 42 and 43, A guide rail member (not shown) for ligating a part of a duct, a shunt or a body tissue using a clip 200 and which is located at the hollow portion 22 of the pipe member 21 and has one end portion attached to the handle housing 20 A rod 41 supported at the front end of the rod 110; and a jaw member 46 provided at an end of the rod. And a slider 48 for moving the first and second jaws 42 and 43 of the jaw member 46 relative to each other by being moved forward and backward by the operation unit 100 and the jaw member being fitted.

A guide groove 41a is formed in the rod 41 in the longitudinal direction so that the slider 48 is guided. A plurality of support protrusions 41b for supporting the jaw members 46 are formed on the side of the end 41 of the rod. The front end of the rod 41 has a length such that the first and second jaws 42 and 43 of the jaw member 46 can protrude from the end of the tubular member 21 when the jaw member 46 is engaged with the front end.

The jaw member 46 includes a base portion 47 having a plurality of engagement holes 47a formed therein at positions corresponding to the support protrusions 41b and an elastic support portion 47b extending at an angle gradually widened from the base portion 47, And first and second jaws 42 and 43 formed at ends of the elastic supporting members 44 and 45 and the elastic supporting members 44 and 45, respectively. The first and second jaws 42 and 43 are installed such that the ends of the first and second jaws 42 and 43 are inclined upward from the center of the tubular member 21 so that the clip 200 can be smoothly ligated, So that the clip 200 can be smoothly loaded. Clip supporting portions 42a and 43a for supporting the clip 200 for binding are formed on the mutually corresponding surfaces of the first and second jaws 42 and 43.

The first and second jaws 42 and 43 are engaged with the jaw member 46 on the side of the end of the slider 48 which is moved back and forth by the operation unit 100 to move the first and second jaws 42 and 43 in the closing direction, And a jaw operating portion 48a for allowing the jaw member 46 to be engaged and opened by the elastic supporting portions 44 and 45 of the retracting jaw member 46. [ The closed sectional area of the jaw operating portion 48a is substantially equal to the sectional area of the elastic supporting portions 44 and 45 when the first and second jaws 42 and 43 are in close contact with each other, It is preferable that the first and second jaws 42 and 43 can be opened and closed when moving forward and backward. A channel-shaped guiding groove 48b is formed to extend from the jaw operating part 48a so that the jaw member 46 can be slid and a guide groove 48b is formed in a portion corresponding to the supporting projection 41b provided on the rod 41 And a slide main body portion 48d in which a long hole 48c is formed in the longitudinal direction so as to be slidable with respect to the rod 21 and the jaw member 46 in combination with the jaw member 46 and the support projection 41b. And an auxiliary guide piece 48e extending from the rear end of the jaw operating part 48a toward the guide guide groove 48b for guiding the elastic support parts 44 and 45 of the jaw member 46 . Respectively.

The jaw member 46 is prevented from separating from the rod 41 at one side of the slider 48 corresponding to the support protrusion 41b of the rod 41 and the jaw member is moved out of the slider 48 A guide portion 49 for guiding a linear movement is provided.

The guide portion 49 includes a guide support portion 49a extending from one side of the slider 48 in the thickness direction of the jaw member 46 and a guide portion 49b extending from the guide support portion 49a in a direction parallel to the slider 48, And a guide piece 49b which is in contact with the base 47 of the jaw member 46. [ The guide piece 49b can be formed by laminating a plate-like slider body portion 48d.

The guide portion 49 is not limited to the above-described embodiment and may include a base portion 47 supported by the support projection 41b of the rod 41 and a slide body portion 48d And guide projections 49d extending in directions opposite to each other.

Another embodiment of the guide portion 49 is formed by extending from one side of the slider body portion 48d corresponding to the base portion 47 supported by the support protrusion 41b of the rod 41 as shown in Fig. And a plate member 49e which is in close contact with the outer surface of the jaw member 46. [

The rod 41 is engaged with a guide body 50 to be described later and is positioned in the hollow portion of the tube member 21 to define a guide groove 41a through which the slider 48 moves.

2 to 6, the clip loading unit 70 is configured to load a clip on the clip supporting portions 42a and 43a of the first and second jaws 42 and 43 of the clip fastening unit 40, And has a guide body portion 50 located at the hollow portion 22 of the tube member 21 and provided with a clip guide portion 51 at an end thereof. The clip guide part 51 is provided with an elastic guide piece 55 for guiding the clip 200 to the clip supporting parts 42a and 43a. The guide body 50 is engaged with the rod 41. A cartridge mounting portion 52 for supplying a clip in the longitudinal direction is formed in the guide main body portion 50. The cartridge mounting portion 52 is provided with a cartridge unit 60 loaded with clips. The cartridge unit 60 includes a cartridge main body formed with a clip mounting space in which the clips are stacked in the longitudinal direction, not shown in detail, and a clip mounted on the cartridge main body and stacked in the clip mounting space, A pusher for elastically biasing is installed. A clip pressing elastic piece 64 for pressing a clip drawn out by the pusher from the clip mounting space is provided on an upper side end portion of the cartridge main body and guide guiding grooves 66 Is formed. The clip pressing elastic piece (64) is provided with a clip pressing auxiliary elastic piece (65) lanced in the longitudinal direction.

The cartridge unit 60 mounted on the cartridge mounting portion 52 of the guide main body portion 50 is provided with a clip (not shown) movably relative to the slider 48 by the operation unit 100 A loading member 71 is provided.

The clip loading section 72 is provided on the front end side of the clip loading member 71. The clip loading section 72 is provided with a guide protrusion 72 which is engaged with the guide guide groove 66 to move the clip 200, (73) is formed. The transfer protrusions 73 are formed such that the rear surface 73a is inclined so that no interference is generated in the clip 200 when the clip loading member 71 is retracted, and the front side is vertical. The rear end side of the clip loading member 71 is formed with a second pin coupling hole 71a to be coupled with a second pin to be described later and a first pin coupled with the slider 48 is inserted And an elongated hole 71b is formed so as to prevent interference with the first pin when the clip loading member 71 is moved forward and backward.

A cover member 75 is provided on the upper portion of the clip loading member 71 to secure a guide space when the clip loading member 71 is moved forward and backward by engaging both sides of the guide body 50 with both sides thereof . The cover member 75 is provided at the end thereof with an end portion of the clip loading member 71 at the time of forward and backward movement of the clip loading member 71, A pressing portion 77 extending in the horizontal direction from the bent portion 76 is formed.

The operation unit 100 moves the slider 48 and the clip loading member 71 relative to the clip supporting portions 42a and 43a of the first and second jaws 42 and 43 of the jaw member 46 1 to 3 and 9 for ligation of the body using the attached clip and loading of the clip by the clip loading unit 70 to the empty clip supporting portion after ligation.

The operation unit 100 includes a handle housing 20 and a guide rail member 110 installed inside the housing corresponding to the tubular member 21 supported by the cap 23. The guide rail member 110 is composed of two first and second members 111 and 112 separated in the lengthwise direction and the slider 48 and the clip loading member 71 are coupled to the guide rail member 110 in the forward and backward directions A first guide portion 101 formed to be drawn in the longitudinal direction is formed for guiding the movement. A plurality of circumferential ridges 113 for fixing and partitioning are formed on the outer circumferential surface of the guide rail member 110. A plurality of circumferential ridges 113 are formed on the outer circumferential surface of the circumferential rim 113, (113a) is formed.

The lever 26 provided on the handle housing 20 is pulled to the front end side of the guide rail member 110 and the slider 48 of the clip fastening unit 40 provided inside the tubular member 21 when rotated counterclockwise And a first transfer unit 120 for moving the slider backward when the lever 26 is rotated in the clockwise direction. The lever 26 provided on the handle housing 20 is pulled on the rear end side of the guide rail member 110 to clip the clip loading unit 70 installed in the tubular member 21 in the counterclockwise direction And a second conveying unit 140 for retracting the member 71 and advancing the clip loading member 71 when the lever 26 is rotated in the clockwise direction.

The first conveyance unit 120 is formed with a first guide hole 121 passing through the guide rail member 110 in the longitudinal direction and having a predetermined length and the first guide hole 121 is formed with the tube member 21 A first pin 122 which is installed inside the first guide member 101 and is engaged with a first pin coupling hole 48c formed at an end of the slider 48 of the clip coupling unit 40 guided by the first guide member 101, The guide rail member 110 is provided so as to be movable forward and backward in the longitudinal direction of the guide rail member 110. The guide rail member 110 is provided with a first conveying member 125 that supports upper and lower portions of the first fin 122 and slides forward and backward along the guide rail member 110. The first conveying member 125 has two members separated in the up and down direction and is provided with a first conveying shaft 125 for moving the first conveying member 125 forward and backward along the guide rail member 110, (Not shown). A first stopping protrusion 127 is formed at an end of the first transport shaft 126 to prevent a hook from being detached as described later. A first hook member 129 is provided on the upper side of the lever 26 so as to be coupled with a first conveying shaft 126 installed on both sides of the first conveying member 125. The first hook member 129 is integrally formed with the lever 26 and includes a first hinge shaft 25 supporting the lever 26 so as to be rotated in a direction opposite to the rotation direction of the lever 26, . The first hook member 129 has a structure in which an upper portion of the first transfer shaft coupling unit 130 is opened so that interference is not generated in a process of coupling the first hook member 129 to the first transfer shaft 126.

The second conveying unit 140 includes a first guide hole 121 formed in the guide rail member 110 and a second guide hole 121 formed in the guide rail member 110, And a second guide hole 141 is formed in the second guide hole 141. The second guide hole 141 is formed in the inner side of the tube member 21 and is guided by the first guide member 101, A second pin 142 coupled with the two-pin coupling hole 71a is installed to be movable back and forth in the longitudinal direction of the guide rail member 110. The guide rail member 110 is provided with a second conveying member 145 that supports upper and lower portions of the second fin 142 and slides forward and backward along the guide rail member 110. The second conveying member 145 has two members separated in the up and down direction and is provided with a second conveying shaft 145 for forward and backward movement of the second conveying member 145 along the guide rail member 110, (146). A second stopping protrusion 147 is formed at an end of the second transfer shaft 146 to prevent a hook, which will be described later, from being released.

The second hook member 150 is rotatably supported on the handle housing 20 by the second hinge shaft 151 in order to move the second transfer member 145 back and forth by the rotational force of the lever 26 And a second conveying shaft engaging part 153 for engaging with the second conveying shaft 146 and moving the second conveying shaft 146 forward and backward is provided on the upper side of the second hook member 151. The second conveying shaft engaging portion 153 has a U-shaped second conveying shaft engaging portion 153 which is open at the top so as to prevent interference with the second conveying shaft 146 when the second conveying member 145 is moved forward and backward, (153a) is formed. A first operation extension portion 155 extending from one side of the lever 26 and a second operation extension portion 155 extending from the second hook member 150 to transmit the rotational force of the lever 26 to the second hook member 150. [ A first guide slot 157 for rotating the second hook member 150 is formed in the second operation extension portion 156 and a second guide slot 157 Is coupled with a guide shaft 158 provided in the first operation extension portion 156 so that the hook member 150 rotates clockwise when the lever 26 rotates counterclockwise. For this, the first guide elongated hole 157 is formed in the longitudinal direction of the first operation extension part 156 and has a curved shape with the central part extending downward.

Spring supporting projections 125a and 145a are formed on the upper surfaces of the first and second conveying members 125 and 145 so that the spring support shaft 28 formed on the handle housing 20 and the connection springs 125b and 145b So that they are elastically biased in the directions in which they are close to each other.

The operation unit 100 further includes a clip binding safety unit 170 and a binding completion confirmation unit 180 that allow the lever to be returned when the clip is fully engaged by the operation of the lever 26 .

11 to 17, the clip binding safety unit 170 is rotatably installed on the first hinge shaft and includes a support portion 171 supported by the lever 26 and a second support portion 171 supported on the other side of the support portion 171 And a rack member 172 having first teeth 172a formed on a circular arc. The engagement portion of the first hinge shaft and the safety operating member 173 is positioned between the support portion 171 and the rack portion 172. [ The second hinge shaft 151 is provided at one side of the handle housing 20 adjacent to the rack portion 172 and is formed at a position eccentric from the second hinge shaft 151 so as to be engaged with the lever 26 for binding the clip. The lever 26 is engaged with the first teeth 172a of the rack portion 172 when the lever 26 is moved forward in a state in which the lever 26 for binding the clip is not sufficiently retracted, A latch member 176 having second teeth 175 for preventing advancement of the latch member 176 is provided. And an elastic spring 177 for rotating the latch member 176 for biasing the second teeth 175 provided on the latch member 176 toward the rack 172 side toward the rack 172 side.

The second teeth 175 formed on the latch member 176 are positioned above the center axis connecting the centers of the first hinge axis 25 supporting the lever 26 and the second hinge axis 151, The first teeth of the rack portion 172 are arranged in an arc shape (an arc having a radius corresponding to the distance between the first hinge axis and the rack portion spaced apart from each other) about the first hinge axis 25.

The binding completion confirmation unit 180 includes an elastic portion 181 extending from the operation extension portion 155 as shown in FIGS. 15 to 17 and a confirmation detection protrusion 182 provided at the end portion of the elastic portion 181 And an elastic member 181 provided on the handle housing 20 so as to pressurize the elastic part 181 while guiding the confirmation detecting protrusion 182 and to detect the binding of the elastomeric part 181 so that elasticity of the tartar part is canceled upon completion of clip- And a striking plate portion 184 which is spaced apart from the binding detection guide portion 183 and contacts the detection detection protrusion 182 when the detection detection protrusion 182 is separated from the binding detection guide portion 183 to generate a sound .

The operation of the clip applicator having the jaw member guide portion according to the present invention constructed as described above will be described as follows.

First, in order to perform a laparoscopic and endoscopic surgical procedure using a clip applicator having a jaw member guide portion, the first and second jaws 42 The tube member 21 in the abdomen is inserted while the clip is loaded on the clip supporting portions 42a and 43a of the first and second clamping members 43 and 43 so that the first and second jaws 42a and 43a Ensure that the ligation site of the tissue is located.

In this state, the lever 26 is pulled. 10 to 13, when the lever 26 of the operation unit 100 is rotated, the first hook member 129 integrally formed with the lever 26 rotates counterclockwise And a second operation extension portion (not shown) connected to the first operation extension portion 155 of the lever 26 by the guide shaft 158 while advancing the first transfer member 125 along the guide rail member 110 156 are rotated and the second hook member 150 is rotated clockwise so that the second conveying member 145 is retracted along the guide rail member 110.

The first pin 122 is coupled to the first pin 122 supported by the first guide hole 121 of the guide rail member 110 and the first pin 122 is coupled to the slider 48, Engaging hole 48c of the slider 48, so that the slider 48 advances.

16 and 19, the slider 48 advancing is moved along the jaw member 46 supported by the rod 41 while the jaw operating portion 48a provided at the end of the slider 48 is moved, The first and second jaws 42 and 43 supported by the first and second shafts 44 and 45 are moved in the closing direction. In particular, since the first and second jaws 42 and 43 protrude outwardly, the first and second jaws 42 and 43 are tightened when the jaw operating portion 48a moves. The clip 200 supported by the clip supporting portions 42a and 43a of the first and second jaws 42 and 43 is tightened to ligate a tissue such as a blood vessel.

The guide piece 49b of the guide portion 49 moves along the base portion 47 supported by the rod 41 in the process of moving the slider 48 along the jaw member 46, Can be prevented from being separated from the rod 41. Since the guide piece 49b is moved along the surface of the jaw member 46 when the slider 48 is moved along the jaw member 46, It is possible to prevent the separation of the jaw members from the guide groove 48b of the slider 48 and improve the straightness of the slider 48 moving along the jaw member 46. [ In particular, since the jaw operating portion 48a of the slider 48 is provided with the auxiliary guide piece 48e in the longitudinal direction of the slider 48, the linearity of the slider moving along the jaw member 46 can be further improved .

In this process, as the second hook member 153 rotates clockwise, the second conveying member 145 is retracted as described above, and the second pin 142 and the second pin engaging hole 71a The clip loading member 71 is retracted backward. The loading protrusion 73 formed on the clip loading portion 72 provided at the end of the clip loading member 71 is moved backward along the guide groove 66 and the loading protrusion 73 The clip comes in a standby state for loading by being in contact with the rear surface of the clip 200. [ At this time, since the pressing portion 77 is bent downward at the end of the cover member 75 coupled with the guide body 50, the clip loading portion 72 is elastically deformed downward by the pressing portion 77 Lt; / RTI >

The lever 26 is returned to the first elastic spring 27 when the conveying force of the lever 26 in the backward direction, that is, the gripping force, is removed in the state where the binding of the clip 200 is completed. When the lever 26 is rotated to the front side due to the return of the lever 26, the first conveying member 125 is retracted by the first hook member 129. The slider 48 coupled by the first conveying member 125 and the first pin 122 is retracted and the jaw operating portion 48a of the slider 48 coupled with the jaw member 46 is disengaged The first and second jaws 42 and 43 are opened by the elastic supporting portions 44 and 45 supporting the first and second jaws 42 and 43.

The second conveying member 145 is advanced by the second hook member 150 and the clip loading member 71 coupled to the second pin 142 by the second pin coupling hole 71a And the clip loading part 72 provided at the end of the clip advances and the clip 200 is loaded on the clip supporting parts 42a and 43a of the first and second jaws 42 and 43 . The clip pressing piece 64 provided at the end of the cartridge unit 60 pushes the clip 200 downward and the elastic guide piece 52 provided on the elastic guide portion 51 is pressed by the first, The clip inserted into the clip supports 42a and 43a of the two jaws 42 and 43 is repressed and prevented from being separated from the clip.

Meanwhile, since the clip applicator having the jaw member guiding portion of the present invention includes the clip binding safety unit 170, it is possible to prevent the tissue from being completely ligated by the clip 200, It is possible to prevent the lever 26 from advancing in a state in which the state in which the supply of the clip 200 is not fully performed.

More specifically, when the lever 26 is pulled to ligature the clip 40, the rack portion 172 of the safety operating member 173, which rotates like the lever 26, And moves while being in contact with the two teeth (175). This movement is such that the second teeth 175 formed on the latch member 176 are positioned above the central axis connecting the centers of the first hinge axis 25 supporting the lever 26 and the second hinge axis 151 The coupling of the first and second teeth is not performed when the rack portion 172 is moved.

However, when the feeding force of the lever 26 is removed in the process of being moved, the safety operation member 173 rotates clockwise as the lever, and the first tooth of the rack portion 172 rotates in the second direction of the latch member 176 So that the rotation of the safety operating member 73 and the lever 26 is fixed.

Therefore, when the clip 200 is not fully engaged, the lever is not returned.

When the lever 26 is fully pulled and the ligation of the clip is completed, the rack portion 172 moves out of the second position of the ratchet member 176 as shown in Fig. When the lever 26 is returned in this state, the safety operating member 173 rotates counterclockwise as shown in Fig. 14, and the rack portion 172 is engaged with the second teeth 175 of the latch member 176 So that the lever 26 is returned to its original state.

17, when the lever 26 is pulled in order to bind the clip of the binding completion confirmation unit 180, the confirmation detection protrusion 182 is pulled out of the binding detection guide unit 180. [ The elastic portion 181 is repressed while being guided along the guide 183 and the confirmation detection protrusion 182 is detached from the binding detection guide portion 183 at the time when the binding of the clip is completed and the striking plate portion 184 is struck Thereby generating a sound. When the lever 26 is advanced, the confirmation detecting protrusion 182 is lowered along the rear surface of the binding detection guide portion 183, at which time the elastic portion is repressed in the widening direction.

As described above, the clip applier having the jaw member guide portion according to the present invention is relatively simple in that the ligation of the clip and the supply of the clip can be performed simultaneously by a single lever operation. In addition, it is possible to prevent the jaws from being opened in a state in which the clip is not completely lined, thereby enhancing the reliability of the ligation.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

Claims

A tubular member installed in the handle housing and having a predetermined length and diameter;
A rod extending from the handle housing, a base provided on the rod, and first and second jaws provided on ends of the elastic supports extended from the base to extend from the end of the rod, A jaw member provided,
A slider provided slidably on the rod for opening and closing the first and second jaws of the jaw member; a slider provided on the slider to prevent the base of the jaw member from being separated from the rod and guiding the movement of the slider along the jaw member A jaw operating unit having a guide portion;
A guide body portion provided in a lower tube member of the jaw operation unit and provided with a clip guide portion for guiding the clip to the first and second jaws at an end thereof; A clip loading member for moving the clip supplied from the cartridge unit along the clip guide unit and loading the clip on the clip support unit of the first and second jaws, and a cover member for guiding the movement of the clip loading member, A clip loading unit;
When the lever installed on the handle housing retracts, the slider is telegraphed to move the first and second jaws in the closing direction to ligate the clip, and when the lever is displayed, the clip loading member is advanced to feed the clip to the clip supporting portion Wherein the jaw member guide unit is provided with a unit.

The method according to claim 1,
The slider includes a jaw operating part for closing and separating the first and second jaws when the jaw member is slid along the jaw member and a jaw member guide groove extending from the jaw operating part and having a channel- And a slide main body portion having a joint portion between the jaw member and the support protrusion at a portion corresponding to the support protrusion provided on the rod, and a slide main body portion having a long hole in the longitudinal direction so as to be slidable with respect to the rod and the jaw member.

3. The method according to claim 1 or 2,
A guiding portion provided on the slider of the jaw operating unit includes a guide supporting portion extending from one side of the slider in the thickness direction of the jaw member and a guide piece extending in a direction parallel to the slider from the guide supporting portion, Wherein the jaw member guide portion is provided with a jaw member guide portion.

The method of claim 3,
And a guide member extending from the rear end of the jaw operating part to the guide groove side for guiding the elastic support part of the jaw member.

The method according to claim 1,
The binding confirmation unit includes an elastic portion extending from an operation extension portion provided on the lever, and a confirmation completion detection unit provided on an end of the elastic portion, And a coupling detection guide portion which is provided on the handle housing to allow the elastic portion to be pressed while guiding the confirmation detecting protrusion and to release elasticity of the tartar portion when the clip is ligatured by operation of the lever, And a striking plate portion for contacting the confirmation detecting protrusion when detached from the binding detection guide portion to generate a hitting sound.