KR20190069108A - Medical applier - Google Patents

Abstract

A medical applier of the present invention comprises: a housing in which a trigger is rotationally provided; a push plate provided on the housing and linearly reciprocating by the rotation of the trigger; a push rod connected to the push plate and providing a gripping pressure to a grip portion for ligating a blood vessel; and a buffer unit provided on the push plate and buffering the push rod when an overload is generated in the push rod or the grip portion. The present invention can prevent deformation and breakage of the grip portion, the push rod, and other parts.

Description

MEDICAL APPLIER {MEDICAL APPLIER}

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a medical application device, and more particularly, to a medical application device configured to ligate a blood vessel or tissue into a medical clip in various surgical procedures.

Generally, surgical procedures frequently require cutting or hemostasis of veins or arteries. Particularly, since bleeding occurs in the process of cutting or hemostasis of blood vessels during laparoscopic or laparoscopic procedures, the blood vessels may cause serious medical accidents when they are caused by microscopic injuries.

Therefore, in recent years, a variety of methods for hemostasis of a blood vessel bleeding region have been searched. For example, an applicator has been used in which a plurality of U-shaped metal clips are mounted and ligated to a blood vessel by being inserted into a surgical site .

As shown in Figs. 7 and 8, the conventional applier includes a housing 12 in the form of a gun having a trigger 16, and a housing 12, which is formed by the actuation of the trigger 16, May include a shaft (18) having a plurality of clips (20) mounted at the ends thereof.

The above-described applier has a configuration in which a plurality of clips provided on the shaft 18 are moved toward the end of the shaft by the operation of the trigger 16. At this time, the clip is jaw , 20) so as to ligature the blood vessels held by the jaw (20). That is, when the user pulls the trigger 16 while holding the blood vessel by the tub 20 provided at the end of the shaft 18, the medical clip is pinched by the tub 20 to ligature the blood vessel.

However, the conventional applier is not limited to a non-rigid body (for example, a medical clip that has already ligated a surgical medical instrument or a blood vessel inserted in a surgical site) due to a user's mistake or unexpected situation, The blood vessel having a diameter larger than the diameter of the body 20 or a hard body tissue is gripped by the tub 20 and is not reused. That is, when the tank 20 is pinched between the above materials, it is deformed or broken and can not be reused.

Therefore, in the conventional applier, when the above situation occurs, there is a problem that the operation time is delayed because the operator has to perform the operation by replacing with the new applicator, and seriously, There is a problem that a separate procedure for removing the components is required.

In addition, such a problem is caused by a surgical method in which a surgeon verifies the surgical site with the naked eye depending on a photographing means such as a camera, such as a laparoscopic surgery or an endoscopic surgery in which the surgical site is not incised, It also causes problems to be incised.

Accordingly, in recent years, when the tank 20 is gripped by a rigid material other than a blood vessel, the force applied to the tank 20 is canceled to prevent the tank 20 from being deformed or damaged An applicator has been developed and used, and the applicator is disclosed in Korean Patent No. 10-1196235.

The applier disclosed in the prior art document has a closed link roller 54 connected to a rod that induces swinging of the jaw 20 by pulling of the trigger 16 as shown in the prior art figures 23a and 23b And an overload mechanism 62 for contacting the closed link roller 54 to prevent an overload from occurring in the tub 20 is disclosed.

However, since the applier disclosed in the above prior art document must separately provide a space in which the overload mechanism 62 can be disposed inside the housing 12, there is a disadvantage that the overall volume of the housing 12 becomes large, The overall weight of the applicator is increased and the user feels inconvenience in handling during the operation. These disadvantages may affect the user's fine hand movements at the time of surgery, and seriously affect the operation result.

In addition, since the number of parts constituting the overload mechanism 62 is large, the manufacturing process of the applicator is complicated and the manufacturing cost is increased.

Therefore, the applicant of the present invention has proposed the present invention to solve the above-mentioned problems, and the prior art document related thereto is Korean Patent No. 10-1196235 entitled " Force Restriction Mechanism for Medical Devices. &Quot;

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems, and it is an object of the present invention to provide a gripping device for gripping a rigid material or rigid organs, It is an object of the present invention to provide a medical applicator which prevents deformation and breakage of components constituting members and other appliers.

It is also an object of the present invention to provide a medical applicator configured to simplify the overall volume and weight of the applicator while preventing deformation and breakage of parts due to overload.

According to the present invention, there is provided a blood pressure monitor comprising: a housing in which a trigger is rotatably provided; A push plate which is linearly reciprocable by rotation of the trigger; A push rod connected to the push plate and providing a gripping pressure to a gripping portion for ligating a blood vessel; And a buffer unit provided on the push plate and buffering the push rod when an overload is generated in the push rod or the grip unit.

The buffer plate may be provided with a buffer space in which the buffer unit is disposed in a direction parallel to a moving direction of the push rod.

The push plate includes a pivotal link connecting the push plate and the trigger, and one end of the pivotal link is connected to an upper portion of the trigger received in the housing, and the other end is connected to the pusher plate Can be connected to a link ball.

Further, the other end of the pivotal link may be in contact with the buffer unit disposed in the buffer space.

The buffer unit may include a hollow tubular member accommodated in the buffer space and having a partition wall formed therein; A guide rail provided along the longitudinal direction of the tubular member at an outer surface of the tubular member and contacting the other end of the rotating link; A buffer rod having one end in contact with one longitudinal side inner surface of the push plate defining the buffer space and the other end inserted into the tubular member and passing through the partition; A buffer spring interposed between the buffer rod and the partition wall; And a stopper fastened to the other longitudinal end of the buffer rod passing through the partition.

The guide rail may have a length longer than a length of the tubular member, and may be inserted into a guide groove formed in the housing and slidably moved.

The buffer spring may be inserted into a longitudinally spaced space of the tubular member partitioned by the partition wall, one end of the buffer spring being in contact with one end of the buffer rod and the other end thereof being in contact with the partition wall.

The stopper may be inserted into a space on the other side in the longitudinal direction of the tubular member partitioned by the partition, and may be fastened to the other longitudinal direction of the buffer rod.

Further, the push plate may include: a body on which the buffer space and the link hole are formed; A first connecting member extending from one end in the longitudinal direction of the body and connected to the push rod, the first connecting member having a width smaller than the width of the body; And a second connection member extending from the other longitudinal direction of the body and connected to an indicator unit provided in the housing.

In addition, the buffer unit may move the push plate backward when an overload occurs in the push rod or the grip portion.

The medical applicator according to an embodiment of the present invention is characterized in that when an overload occurs in a push rod that operates a grip or grip portion for ligating a blood vessel due to a user's mistake, It is possible to prevent deformation and breakage of the grip portion, the push rod, and other parts.

The medical applicator according to an embodiment of the present invention can be provided with a buffer unit for buffering the push plate or the push rod without increasing the overall size or volume of the housing. Thus, the size of the buffer unit can be simplified, Can provide the convenience of operation.

In addition, the medical applicator according to the embodiment of the present invention can prevent breakage and deformation of components due to overload occurrence by a simple structure, thereby reducing manufacturing cost of the apparatus.

1 is a cross-sectional view of an applicator according to one embodiment of the present invention;
2 is a perspective view of a push plate according to an embodiment of the present invention;
FIG. 3 is a cross-sectional view showing a state in which the trigger of the applier shown in FIG. 1 is pulled. FIG.
4 is a perspective view of a buffer unit according to an embodiment of the present invention;
FIG. 5 is a sectional view showing a state in which a push plate is retracted when an overload is generated in a grip portion according to an embodiment of the present invention. FIG.
FIG. 6 is a sectional view showing a guide groove formed in a housing according to an embodiment of the present invention; FIG.
7 is a perspective view of a conventional airplane;
8 is an exploded perspective view showing a detailed configuration of the applicator shown in Fig. 7; Fig.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving them will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings.

It should be understood, however, that the invention is not limited to the disclosed embodiments, but is capable of many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, To fully disclose the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims.

Hereinafter, a medical applicator according to an embodiment of the present invention will be described in detail with reference to FIGS. 1 to 6. FIG. In describing the present invention, a detailed description of known functions and configurations incorporated herein will be omitted so as not to obscure the gist of the invention.

1 is a cross-sectional view of an applicator according to an embodiment of the present invention, FIG. 2 is a perspective view of a push plate according to an embodiment of the present invention, FIG. 3 is a cross- FIG. 4 is a perspective view of a buffer unit according to an embodiment of the present invention, and FIG. 5 is a cross-sectional view illustrating a state in which the push plate is retracted when an overload is generated in a grip unit according to an embodiment of the present invention. And FIG. 6 is a cross-sectional view showing a state in which a guide groove is provided in a housing according to an embodiment of the present invention.

1, a medical applicator 100 according to an embodiment of the present invention includes a housing 110 having a trigger 111 rotatably provided therein, A push rod 130 which is connected to the push plate 120 and provides a gripping pressure to a gripping portion (not shown) for ligating a blood vessel, And a buffer unit 140 provided in the push plate 120 and buffering the push rod 130 when an overload is generated in the grip unit.

The housing 110 has a shape of a gun as a whole, and a space is formed therein in which components for operating the applier 100 can be housed.

1 to 3, the push plate 120 is a component that is mounted on a space formed in the upper portion of the housing 110. When the user pulls the trigger 111, When the user releases the trigger 111, the user can move backward and return to the original state.

That is, the push plate 120 is coupled to the push rod 130 to transmit the force of the user, which is transmitted to the trigger 111, to the push rod 130 in association with the pivot movement of the trigger 111, . For reference, the operational process in which the push plate 120 is moved forward or backward in conjunction with the rotation of the trigger 111 will be described after the detailed configuration of the buffer unit 140 is described.

A buffer space S (see FIG. 2) in which the buffer unit 140 is disposed may be provided in a direction parallel to the moving direction of the push rod 130 in the longitudinal direction stop of the push plate 120 have.

1 and 3, the push plate 120 and the trigger 111 may be connected to each other via a pivot link 150. [

One end of the pivot link 150 is connected to the upper portion of the trigger 111 disposed in the inner space of the housing 110, And the other longitudinal end thereof may be connected to a link hole H (see FIG. 2) provided in the push plate 120 so as to communicate with the buffer space S.

Here, the other end in the longitudinal direction of the pivot link 150 is in contact with the buffer unit 140 accommodated in the buffer space S. That is, a hinge pin provided at the other longitudinal direction of the pivot link 150 is inserted into a link hole H communicably connected to the buffer space S, and the other end of the pivot link 150 is connected to the buffer Unit 140, as shown in FIG.

The push rod 130 may be a member that receives a force applied to the trigger 111 by the user from the push plate 120 and is reciprocated linearly. One end of the push rod 130 in the longitudinal direction is connected to the push plate 120, And a grip portion (not shown) for holding the blood vessel is provided at the other end in the longitudinal direction.

When the push rod 130 is advanced, a plurality of medical clips (not shown) are advanced a predetermined distance along the longitudinal direction of the push rod 130. At this time, (Not shown), thereby ligating the blood vessel.

As described above, a configuration in which a plurality of medical clips are respectively transported by a predetermined distance by the forward movement of the push rod 130, and the medical clip is compressed by gripping the grips located at the distal ends, It is to be understood that the present invention is not limited to the details of construction thereof in order to avoid obscuring the gist of the present invention.

1 and 4, the buffer unit 140 includes a hollow tubular member 141 accommodated in the buffer space S and having a partition wall 141a formed therein, A guide rail 142 provided along the longitudinal direction of the tubular member 141 at an outer surface of the tubular member 141 and in contact with the other end of the rotating link 150, 120 and the other end thereof in the longitudinal direction is inserted into the tubular member 141 and passes through the partition wall 141a, and the buffer rod 143, A buffer spring 144 interposed between the barrier ribs 141a and a stopper 145 fastened to the other longitudinal end of the buffer rod 143 passing through the barrier rib 141a.

The tubular member 141 can be accommodated in the buffer space S with a length shorter than the length formed by the buffer space S. [

The partition 141a is formed along the inner circumferential surface of the tubular member 141, and the central portion thereof is perforated so that the other end in the longitudinal direction of the buffer rod 143 can be inserted.

The guide rails 142 may be spaced apart from each other along the circumferential surface of the tubular member 141 to be spaced apart from each other.

The guide rail 142 has a length d2 that is longer than the length d1 of the tubular member 141 Lt; / RTI > That is, one end in the longitudinal direction of the guide rail 142 is positioned on the same plane as one end in the longitudinal direction of the tubular member 141, and the other end in the longitudinal direction thereof is longer than the other end in the longitudinal direction of the tubular member 141 And can be in contact with the other longitudinal direction of the pivot link 150. [

The guide rail 142 may be inserted into a guide groove 115 formed in the housing 110 and slid in a direction parallel to the direction of movement of the push plate 120.

The buffer load 143 may be accommodated in the buffer space S with a length shorter than a length formed by the buffer space S. [

The buffer rod 143 includes a pressing member 143a which is in contact with an inner surface of one side in the longitudinal direction of the push plate 120 for partitioning the buffer space S and a pressing member 143b having a diameter smaller than the diameter of the pressing member 143a And an insertion member 143b integrally connected to the pressing member 143a while holding the pressing member 143a.

The pressing member 143a has a larger diameter than the inner diameter of the tubular member 141. [ On the other hand, one end of the insertion member 143b in the longitudinal direction is connected to the pressing member 142, and the other end of the insertion member 143b in the longitudinal direction is inserted into the tubular member 141 and can pass through the partition 141a.

The cushion spring 144 has a size that can be received in the tubular member 141 and can be inserted into a space on one side in the longitudinal direction of the tubular member 141 partitioned by the partition wall 141a. One end in the longitudinal direction of the buffer spring 144 is in contact with the urging member 142a of the buffer rod 143 and the other longitudinal end of the buffer spring 144 is in contact with the partition wall 141a while being held by the tubular member 141 .

The stopper 145 has a size that can be received in the tubular member 141 and is inserted into the other longitudinal space portion of the tubular member 141 partitioned by the partition wall 141a, 143, that is, the other longitudinal end of the insertion member 142b.

The stopper 145 may be formed of a known nut so that a screw hole (not shown) is formed at the other longitudinal end of the buffer rod 143 so as to be fastened to the stopper 145 .

3, when the user pulls the trigger 110, the buffer unit 140 can press the push plate 120 and move it forward.

That is, when the trigger 111 is pulled by the user, the upper portion of the trigger 111 connected to one end of the pivot link 150 is turned counterclockwise. At this time, And can be turned clockwise.

The hinge pin S provided at the other longitudinal end of the pivot link 150 is moved in the direction in which the buffer space S is disposed in the link hole H, And the other end in the longitudinal direction presses the other longitudinal side of the guide rail 142.

Then, the tubular member 141 integrally connected to the guide rail 142 is advanced from the buffer space S in the direction of arrow A shown in FIG. At this time, a predetermined gap is formed between the other longitudinal end of the tubular member 141 and the other longitudinal inner surface of the push plate 120 partitioning the buffer space S.

When the tubular member 141 is moved forward, the cushioning spring 144 is compressed by the partition wall 141a and presses the pressing member 143a of the buffer rod 143.

Then, the inner surface of one side in the longitudinal direction of the push plate 120 partitioning the buffer space S is pressed by the pressing member 143a, whereby the push plate 120 can be moved forward .

Here, the push plate 120 may be manufactured in the shape shown in FIG. That is, the push plate 120, as shown in FIG. 2, A body 121 on which the buffer space S and the link hole H are formed and a body 121 extending from one end in the longitudinal direction of the body 121 and connected to the push rod 130, A second connecting member 123 extending from the other longitudinal end of the body 121 and connected to an indicator unit 160 provided in the housing 110, ).

The body 121 may be a member formed with the buffer space S and the link hole H as described above and the link hole H may be formed in the longitudinal direction of the body 121 And can be formed so as to be able to communicate with the buffer space S. Therefore, the other end of the pivot link 150 may be connected to the other end of the body 121 in the longitudinal direction.

One end in the longitudinal direction of the first connection member 122 may be connected to one end in the longitudinal direction of the body 121, and the other end in the longitudinal direction may be connected to one end in the longitudinal direction of the push rod 130.

A guide bush 113 for guiding the linear movement of the first linking member 122 may be provided at a portion of the housing 110 corresponding to the other end in the longitudinal direction of the first linking member 122. That is, the other longitudinal end of the first connection member 122 may be connected to one end of the push rod 130 in the longitudinal direction through the guide bush 113.

Meanwhile, a compression spring 114 may be provided between one end of the guide bush 113 and the body 121 in the longitudinal direction.

One end in the longitudinal direction of the compression spring 114 is in contact with one longitudinal end of the body 121, and the other end in the longitudinal direction is in contact with the end of the guide bush 113. When the trigger 111 is pulled by the user, the compression spring 114 is pressed from one end in the lengthwise direction of the body 121, and the one end in the longitudinal direction of the body 121 and the guide bush 113 And is compressed between the step portions 113a. On the contrary, when the trigger 111 is returned to its original state, it is stretched between one end in the longitudinal direction of the body 121 and the step portion 113a of the guide bush 113.

The compression spring 114 serves to mitigate vibrations or shocks generated in the push plate 120 when the push plate 120 is linearly reciprocated by the trigger 111, And also serves to return the forwardly-biased push plate 120 to its original state.

The second connection member 123 of the push plate 120 may be connected to the indicator unit 160 provided on the rear side of the housing 110 as described above.

The indicator unit 160 recognizes the number of medical clips provided on the push rod 130 by a user and is connected to the second connection member 123 to move forward or backward And a sawtooth module 162 that rotates clockwise when the indicator rod 161 is retracted.

One end of the indicator rod 161 in the longitudinal direction is connected to the second linking member 123 and a protrusion 161a which can be inserted into the slot 123a formed in the second linking member 123 is formed at one end thereof. Respectively.

The other end of the indicator rod 161 in the longitudinal direction is connected to the sawtooth module 162, and the other end of the indicator rod 161 is provided with an engaging member that engages with the teeth of the sawtooth module 162.

When the indicator rod 161 is moved forward, the teeth of the sawtooth module 162 are not hooked to the engaging member of the indicator rod 161, and the indicator rod 161 is moved backward And is formed in such a shape that it can be rotated in the clockwise direction by being pressed by the engaging member.

Since the indicator module 160 has a configuration in which the sawtooth module 162 can be rotated in the clockwise direction every time the push plate 120 is linearly reciprocated once, The number of medical clips provided to the user can be displayed to the user. That is, each time the user pulls and releases the trigger 111 once, the sawtooth module 162 is rotated clockwise to display the number of medical clips provided on the push rod 130 to the user. For example, the saw module 130 includes a rotating body in which a number indicating the number of medical clips is sequentially displayed, and a number displayed on the rotating body is visually confirmed by the user at the rear end of the housing 110 The opening is provided.

The above-described indicator unit 160 is a well-known structure that can be readily implemented by those skilled in the art, and thus detailed description of the structure of the indicator unit 160 is omitted so that the gist of the present invention is not ambiguous.

The medical applicator 100 according to the embodiment of the present invention configured as described above may be configured such that when an overload is generated in the push rod 130 or the grip portion, the push plate 130 connected to the push rod 130 3 and 5, when the push rod 130 or the grip portion is overloaded, the push plate 130 (or the push plate 130) may be retreated to prevent deformation or breakage of parts due to overload. 120) and a backward (retracted) movement operation process will be described as an example.

First, when the user grasps a vessel having a diameter larger than the diameter of the blood vessel to be rigidly operated or ligated to the grip portion provided at the end of the push rod 130 and then pulls the trigger 111, 130) or an overload occurs in the gripper.

Then, the push rod 130 tries to move backward in the direction of the arrow B shown in FIG. 5, and the push plate 120 also tries to move backward in conjunction with this.

Here, since the tubular member 141 and the pivotal link 150 maintain a state in which the user is stopped by the force of pulling the trigger 111, the force to push the push plate 120 backward, A collision is generated between the pulling forces of the trigger 111, so that various components constituting the applicator 100 are deformed or broken.

The push plate 120 and the buffer rod 143 are spaced apart from each other by the buffer spring 144 so that the push plate 120 and the buffer rod 143, And can be moved backward by a predetermined distance formed between the inner surface on the other side in the longitudinal direction of the plate 120.

Accordingly, an instantaneous impact generated in the push rod 130 and the push plate 120 by the overload is relaxed by the buffer space S and the buffer unit 140 provided in the push plate 120, Deformation or breakage of various components constituting the applicator 100 can be prevented and in addition, the user can stop the pulling operation of the trigger 110 and avoid the occurrence of an additional overload in the airplane 100. [

The medical applicator 100 according to an embodiment of the present invention having the above-described structure may be configured such that when an overload occurs in a push rod that operates a grip portion or a grip portion for ligating a blood vessel due to a user's mistake, It is possible to prevent the deformation and breakage of the grip portion, the push rod, and other parts.

In addition, since the medical applicator 100 according to the embodiment of the present invention can install the buffer unit that buffers the push plate or the push rod without increasing the overall size or volume of the housing, It is possible to simplify the operation and provide convenience to the user.

In addition, since the medical applier 110 according to the embodiment of the present invention can prevent breakage and deformation of parts due to overload occurrence by a simple structure, the manufacturing cost of the apparatus can be reduced.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments.

Therefore, the scope of the present invention should not be limited by the described embodiments, but should be determined by the scope of the appended claims and equivalents thereof.

100: Airplane 110: Housing
111: Trigger 113: Guide bush
114: compression spring 115: guide groove
120: push plate 121: body
122: first connecting member 123: second connecting member
123a: elongated hole 130: push rod
140: buffer unit 141: tubular member
141a: partition wall 142: guide rail
143: buffer load 143a:
143b: insertion member 144: buffer spring
145: Stopper 150: Rotating link
S: buffer space H: link space

Claims (10)

A housing in which a trigger is rotatably provided;
A push plate which is linearly reciprocable by rotation of the trigger;
A push rod connected to the push plate and providing a gripping pressure to a gripping portion for ligating a blood vessel; And
And a buffer unit provided on the push plate and buffering the push rod when an overload is generated in the push rod or the grip unit.
The method according to claim 1,
Wherein the pusher plate is provided with a buffer space in which the buffer unit is arranged in a direction parallel to the direction of motion of the pushrod.
3. The method of claim 2,
And a pivot link connecting the push plate and the trigger,
Wherein one end of the pivot link is connected to an upper portion of the trigger accommodated in the housing and the other end is connected to a link hole provided in the push plate so as to communicate with the buffer space.
The method of claim 3,
And the other end of the pivotal link is in contact with a buffer unit disposed in the buffer space.
5. The method of claim 4,
Wherein the buffer unit comprises:
A hollow tubular member received in the buffer space and having a partition wall formed therein;
A guide rail provided along the longitudinal direction of the tubular member at an outer surface of the tubular member and contacting the other end of the rotating link;
A buffer rod having one end in contact with one longitudinal side inner surface of the push plate defining the buffer space and the other end inserted into the tubular member and passing through the partition;
A buffer spring interposed between the buffer rod and the partition wall; And
And a stopper fastened to the other longitudinal direction of the buffer rod passing through the partition.
6. The method of claim 5,
Wherein the guide rail has a length longer than a length of the tubular member and is inserted into a guide groove formed in the housing and is slidable.
6. The method of claim 5,
Wherein the buffer spring is inserted into a space on one side in the longitudinal direction of the tubular member partitioned by the partition wall, one end in the longitudinal direction being in contact with one end of the buffer rod and the other end in the longitudinal direction being in contact with the partition wall. pliers.
6. The method of claim 5,
Wherein the stopper is inserted into a space on the other side in the longitudinal direction of the tubular member partitioned by the partition and is fastened to the other longitudinal direction of the buffer rod.
5. The method of claim 4,
The push plate includes:
A body in which the buffer space and the link hole are formed;
A first connecting member extending from one end in the longitudinal direction of the body and connected to the push rod, the first connecting member having a width smaller than the width of the body; And
And a second connection member extending from the other longitudinal direction of the body and connected to an indicator unit provided on the housing.
10. The method according to any one of claims 1 to 9,
Wherein the buffer unit comprises:
And the push plate is moved backward when an overload is generated in the push rod or the grip portion.

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