KR20190028164A - Circular anastomosis stampling instrument and compression strength contol method thereof - Google Patents

Abstract

The present invention relates to a circular stapler and a compression strength controlling method thereof. The circular stapler comprises: a stapling unit which staples a stapling part by discharging a staple to the stapling part; a handle unit which generates a pressure for discharging the staple by the operation of an operator; a driving unit which generates driving force to move an anvil head arranged in the stapling unit in back and forth directions; and a control unit which controls the driving of the driving unit to control strength compressing the stapling part by controlling a distance between a head unit and the anvil head based on setup strength set by the operator. The present invention is able to control compression strength added to the stapling part stapled by discharging the staple after controlling a distance between the anvil head and the head unit according to setup strength set by the operator.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a circular staple,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a circular knitting machine, and more particularly, to a circular knitting machine for adjusting the strength of a staple to be fired according to characteristics of an anastomosis site, and a method for adjusting the knitting strength thereof.

Anastomosis is an abdominal aortic anastomosis that is connected to a cut part of the body after cutting operation related to intestinal diseases such as esophagus, stomach, large intestine, small intestine. Anastomosis is an esophageal reconstruction after esophageal partial removal surgery, Removal of the colon due to colon diseases such as esophageal and duodenal junctions after surgery, surgery for reconstruction of the colon after surgery, removal of lesions on the rectum, rectal reconstruction after surgery, etc. have.

Until recently, a simple anastomosis with a suture technique has been performed and it is one of the most widely used treatment methods to date.

However, in the suture of the anastomotic site, the anastomosis resulting from leakage of the anastomotic site and the subsequent secondary changes lead to stenosis of the anastomotic site, which is an important factor affecting the prognosis of the patient. .

In recent years, circular surgery has been widely used in the above-described anastomosis surgery as a surgical tool used for surgical operations of tubular organs.

The circular articulator according to the prior art is made up of three parts: a head part, a connecting part and a handle part.

The head portion is a portion that performs a function of stitching the intestines by a stapler during surgery and cutting unnecessary soft tissue, and the connecting portion is a connecting portion formed in a shape that can be deformed according to the shape of a bowel or a surgical site during surgery, It is the part that regulates the interface pressure of the soft tissue of the intestines and fires a stapler for anastomosis and generates mechanical power to cut the soft tissue.

The circular mounter configured in this way includes a bed on which a plurality of " C " shaped staples are circumferentially arranged at the distal end of the connecting portion extending from the handle portion, and an anvil standing at a position facing the bed to deform the staple .

Therefore, the staple is inserted by inserting the bed and the anvil into the tubular organs, the distance between the bed and the anvil is reduced, the staples are struck, the staple is deformed by the grooves provided on the opposing annular surfaces, And the remaining extra tissue is cut by a circular knife disposed inside the staple row to complete the anastomosis.

U.S. Patent No. 5392979 U.S. Patent No. 5205459

However, according to the conventional art, a circular anchor is integrated with the above-mentioned details and is a hand-operated mechanism that depends on the operator's senses. It is an anatomical position, for example, characteristics of an anastomotic site such as a long size or thickness, There was a problem that the pressure of the anastomotic interface was designed without taking into consideration the minute and various differences of the operation subjects.

That is, since the anvil head and the head portion always maintain a constant distance, the circular anchor according to the related art has a problem in that the strength for squeezing the anastomotic site can not be controlled according to the size and thickness of the intestine.

As a result, the circular articulator according to the prior art provides a cause for causing diseases such as leakage or stenosis after the operation of the anastomosis site as the operator performs the operation according to the sense or experience of the operator.

SUMMARY OF THE INVENTION An object of the present invention is to solve the problems described above, and to provide a circular stapler which can control the strength of stitching an anastomotic site by emitting staples according to the characteristics of anastomosis site, and a method of adjusting the compression strength thereof.

It is another object of the present invention to provide a circular stapler which can control the strength of stapling by firing staples according to the setting of a practitioner, and a method of adjusting the crimping strength thereof.

In order to achieve the above-mentioned object, a circular sealer according to the present invention comprises: an anastomosing portion for emitting staples to an anastomosing portion to join an anastomotic portion; a handle portion for generating a pressing force for emitting staples by operation of a practitioner; A driving part for generating a driving force for moving the anvil head provided in the anastomotic part in the anteroposterior direction and a driving part for adjusting the strength of pressing the anastomotic part by adjusting the distance between the head part and the navel head based on the set intensity set by the practitioner And a control unit for controlling the driving.

In order to accomplish the above object, the present invention provides a method for adjusting a compressive strength of a circular anchor, comprising the steps of: (a) setting a compressive strength applied to an anastomotic site from an operator using a setting unit; (b) Generating a control signal for controlling the compression strength based on the set intensity set in (a) at the control unit, (c) moving the envelope head in the forward and backward direction based on the control signal in the driving unit, (D) transmitting an operation force for rotating the lever of the handle portion to the head portion and firing the staple to join the anastomotic portion, wherein the step (a) And the strength of pressing the anastomosis site is adjusted by adjusting the distance between the endoscope and the endoscope.

As described above, according to the present invention, the distance between the anvil head and the head part is adjusted according to the set strength set by the practitioner, so that the staple is fired and the compression strength Can be controlled.

Thus, according to the present invention, it is possible to prevent an illness such as leakage or stenosis, which is caused when the operation is performed at a compression strength different from that of the anastomosis site, in advance.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a configuration diagram of a circular sealer according to a preferred embodiment of the present invention,
Figure 2 is a perspective view of the circular mantle shown in Figure 1,
3 is an exploded perspective view of the anvil head shown in Fig. 2,
FIG. 4 is a view showing a basic shape of the staple and a process of fastening the staple to an anastomosing region,
5 is a view illustrating a state where the compression strength is adjusted according to the characteristics of the anastomosis site,
6 is a flow chart for explaining steps of adjusting the crimp strength of a circular sealer according to a preferred embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

Although the present embodiment will be described with reference to a circular stapler using staples, it should be noted that the present invention is not necessarily limited thereto, but may be applied to various types of staplers having staple receptacles and anvils.

FIG. 2 is a perspective view of the circular insulator shown in FIG. 1, and FIG. 3 is an exploded perspective view of the anvil head shown in FIG.

Hereinafter, terms indicating directions such as 'left', 'right', 'forward', 'rearward', 'upward' and 'downward' are defined as indicating respective directions based on the states shown in the respective drawings do.

As shown in FIG. 1, the circular sealer 10 according to the preferred embodiment of the present invention includes an anastomosis portion 20 for emitting staples at an anastomosis site and mating an anastomotic site, and a stapler 20 for emitting staples A driving unit 40 for generating a driving force to move the anvil head 22 provided in the anastomosing unit 20 in the forward and backward direction and a driving unit 40 for driving the head unit 21 And the control unit 50 controls the driving of the driving unit 40 so as to adjust the strength of pressing the anastomosis site by adjusting the distance between the anvil head 22 and the anvil head 22. [

In addition, the circular insulator 10 according to the preferred embodiment of the present invention includes a setting unit 60 for setting the setting intensity from a practitioner, a power unit 70 for supplying power to each device, And a display unit 80 for displaying the image.

2 and 3, the anchor portion 20 includes a head portion 21 for receiving staples therein and for emitting staples by the driving force provided by the driving portion 40, And an anvil head 22 coupled thereto.

The head part 21 is provided with a staple receiving port 23 for receiving staples and the anvil head 22 may be provided with an anvil 24 for guiding the staple to be deflected.

In addition, the head portion 21 may be provided with a cutter for cutting unnecessary portions inside the portion to be stapled at the staple portion.

A trocar 27 is provided at the tip of the head 21 and an anvil shaft 28 coupled to the trocar 27 at the end of the anvil head 22.

The head portion 21 and the anvil head 22 are arranged such that the head portion 21 is disposed on the first tissue side of the anastomotic site to be anastomosed to each other and the anvil head 22 is disposed on the second tissue side. (27) and the anvil shaft (28).

4 is an exemplary view showing the basic shape of the staple and the process of being fastened to the anastomosis site.

As shown in FIG. 4A, the staple 11 is formed in a substantially 'C' shape and includes a base bar 12 disposed at right angles to the firing direction, And a pair of protruding bars 13 protruding from one another.

4 (b) to 4 (d), when the staple 11 is fired at the staple receiving port 23, a pair of the protruding bars 13 are pulled out of the pair of staples 11 And is bent according to the shape of the concave portion (25) when it comes into contact with the concave portion (25).

The anvil 24 is formed at the rear end of the anvil head 22 in contact with the head portion 21 and at a position corresponding to the staple receiving opening 23 formed in the head portion 21 on the rear face of the anvil 24 A plurality of pairs of concave grooves 24 can be formed.

Here, the concave portions 25 of each pair are concave so as to have a semicircular shape in cross section, and protrusions 26 may be formed between the concave portions 25 of each pair.

Both sides of the protrusion 26 are formed with a curvature corresponding to the curvature of the pair of recesses 25 formed on both sides and the upper end of the protrusion 26 can be formed wider than the center.

The pair of protruding bars 13 are respectively bent along the shape of the pair of concave portions 25 toward the protruding portion 26 between the pair of concave portions 25 and in the direction away from the protruding portion 26 And curved toward the protruding portion 26 along the shape of the pair of recesses 25 again.

Accordingly, the tip portions of the pair of projecting bars 13 are finally rolled into a substantially ring shape.

Accordingly, the first tissue 14 and the second tissue 15 at the anastomotic site to be anastomosed in the surgical procedure can be stapled by the staple 11.

On the other hand, the thickness and size of the first and second tissues 14 and 15 may be different depending on the fine and various differences of the operation subject such as the anatomical location, characteristics, individual, sex, and age of the anastomotic site to be anastomosed.

Therefore, according to the present invention, the strength for squeezing the anastomotic region from the practitioner is set, and the distance between the head portion 21 for emitting staples and the navel head 22, ). ≪ / RTI >

In detail, the setting unit 60 may be provided with a selection button or a switch for setting the setting intensity to be squeezed from the practitioner to a plurality of levels.

In the present embodiment, the setting intensity may be set to the first stage to the third stage.

For example, FIG. 5 illustrates a state in which the compression strength is adjusted according to the characteristics of the anastomosis site.

In this embodiment, as shown in Fig. 5 (a), the case where the thickness and size of the anastomosis site are the smallest is set as the first stage, and as shown in Fig. 5 (c) Can be set to the third stage

Of course, the present invention is not limited to this, and may be changed to set the setting intensity to two or more stages.

Thus, in the first stage, the present invention adjusts the distance between the head portion 21 and the anvil head 22 to be the first distance d1 set to the minimum value, thereby increasing the compressive strength applied to the anastomosis site.

On the other hand, if it is set to the third stage, the distance between the head part 21 and the anvil head 22 is adjusted to be the third distance d3 set at the maximum value, thereby reducing the pressing strength applied to the anastomosing site.

Therefore, the display unit 80 sequentially displays the setting intensities set in accordance with the operation of the selection button of the setting unit 60, that is, the first, second, and third stages, and when the selection button is operated again in the third stage, The setting intensity can be sequentially changed from the first stage and displayed.

1 and 2, the head portion 21 of the mating portion 20 and the handle portion 30 are connected to each other by a connecting member 32 formed in a pipe shape. Inside the connecting member 32, The anvil head driving shaft 42 of the driving unit 40 and the staple driving shaft 34 of the handle unit 30 can be installed.

The handle portion 30 receives a pressing force from a lever 31 and a lever 31 that generate a pressing force by rotating the operator and presses the staple 11 received in the staple receiving portion 23 toward the anvil 24 And a staple driving shaft 34 that transmits a pressing force to start shooting.

A controller 50 and a power source 70 are provided in the handle 30 and a setting unit 60 and a display unit 80 are provided on the outer surface of the handle 30.

The lever 31 is provided with a safety clip 33 for interrupting or releasing the rotation of the lever 31. A first power 33 for switching the rotational motion of the lever 31 to linear motion is provided between the lever 31 and the staple drive shaft, A conversion unit 35 may be provided.

The first power converting unit 35 may be configured by combining a shaft and a gear.

The driving unit 40 receives the driving force generated by the driving motor 41 and the driving motor 41 driven by the power supply unit 70 and transmits the driving force to the trocar 27 to be supplied to the anvil head 27 22 to linearly move the anvil head drive shaft 42 in the anteroposterior direction.

A second power converting unit 53 composed of a gear, a shaft, or the like may be provided between the output shaft of the drive motor 31 and the anvil head drive shaft 42 to convert the rotational motion of the drive motor 31 into a linear motion .

The control unit 50 adjusts the distance between the head unit 21 and the anvil head 22 according to the setting strength set through the setting unit 60 to drive the driving unit 40 to adjust the compression strength .

For this purpose, distances between the head unit 21 and the anvil head 22 are matched and stored for each stage of the setting intensity in a memory (not shown) built in the control unit 50, The anvil head 22 may be moved in the forward and backward directions according to the intensity to generate a control signal for controlling the driving of the driving unit 40 so as to be a corresponding distance.

Thus, according to the present invention, the distance between the anvil head and the head can be adjusted according to the setting strength set by the practitioner, so that the staple can be fired to control the compression strength applied to the anastomotic site.

Next, referring to FIG. 6, a method for adjusting the crimp strength of a circular sealer according to a preferred embodiment of the present invention will be described in detail.

FIG. 6 is a flowchart illustrating steps of adjusting the crimp strength of a circular sealer according to a preferred embodiment of the present invention.

6, when the power switch (not shown) is turned on and power is supplied from the power source unit 70, the control unit 50 initializes each device and controls to prepare an operation for anastomosing the anastomotic site.

In step S12, the setting unit 60 sets the compression strength to be applied to the anastomotic site from the practitioner.

At this time, the practitioner operates the selection switch or button provided in the setting unit 60 in consideration of the anatomical position, the characteristics of the anastomosis site, the age and sex of the patient, And the third stage.

In step S14, the control unit 50 determines whether the setting intensity set through the setting unit 60 is the first stage.

If it is determined in step S14 that the first stage has been set, the controller 50 confirms the first distance d1 corresponding to the first stage stored in the memory and controls the head unit 21 and the anvil head 22 ) To the first distance (d1) is generated by controlling the driving unit (40).

The drive motor 41 of the drive unit 40 is driven in accordance with the control signal of the control unit 50 and the anvil head drive shaft 42 drives the head unit 21 and the anvil head 22 at a first distance the drive force of the drive motor 41 is transmitted to the anvil head 22 in the forward and backward directions (S16).

On the other hand, if it is determined in step S14 that the set strength is not the first stage, the control unit 40 determines whether the set strength set through the setting unit 50 is the second stage (S18).

If it is determined in step S18 that the second stage is set, the controller 50 confirms the second distance d2 corresponding to the second stage, and if the distance between the head unit 21 and the anvil head 22 is And generates a control signal for controlling driving of the driving unit 40 to be the second distance d2.

The drive motor 41 of the drive unit 40 is driven in accordance with the control signal of the control unit 50 and the anvil head drive shaft 42 drives the head unit 21 and the anvil head 22 at a second distance (d2), and moves the anvil head 22 in the forward and backward directions (S20).

On the other hand, if it is determined in the step S18 that the set strength is not the second level, the controller 50 confirms the third distance d3 corresponding to the third stage, and confirms the third distance d3 between the head 21 and the anvil head 22 To the third distance (d3), based on the control signal.

At this time, the driving motor 41 of the driving unit 40 is driven in accordance with the control signal of the control unit 50, and the anvil head driving shaft 42 drives the distance between the head unit 21 and the anvil head 22 to the third distance the drive force of the drive motor 41 is transmitted to the anvil head 22 in the forward and backward directions (S22).

After the adjustment of the distance between the head part 21 and the anvil head 22 is completed according to the setting intensity set by the operator through the above process, when the operator rotates the lever 31 by the operator (S24), the staple driving shaft 34 transmit the pressing force applied to the lever 31 to the head portion 21 and the staple 11 accommodated in the staple receiving port 23 is fired toward the anvil 24 by the transmitted pressing force.

As the pair of protruding bars 12 of the staple 11 are warped along the shape of each pair of concave groove 25 and protrusion 26 formed in the anvil 24 and are fastened to the anastomosis site, 1 tissue 14 and the second tissue 15 are anastomosed (S26).

In step S28, the controller 50 checks whether the power supply is turned off by turning off the power switch, and repeats steps S12 to S26 until the power supply is interrupted.

On the other hand, if it is determined in step S28 that the power supply is interrupted, the control unit 50 stops driving each device provided in the circular combiner 10 and terminates the process.

According to the above-described process, the distance between the anvil head and the head part can be adjusted according to the setting strength set by the practitioner, so that the staple is fired to adjust the compression strength applied to the anastomotic site.

Although the invention made by the present inventors has been described concretely with reference to the above embodiments, the present invention is not limited to the above embodiments, and it goes without saying that various changes can be made without departing from the gist of the present invention.

In other words, although the circular stapler using the staple according to the above-described embodiment has been described, the present invention is not necessarily limited to this, but may be modified to be applicable to various types of staplers having the staple receptacle and the anvil .

The present invention is applied to a circular knitting machine that adjusts a pressing strength applied to an anastomotic site by firing a staple by adjusting a distance between an anvil head and a head according to a set strength set by a practitioner, .

10: Circular Archer
11: staple 12: base bar
13: protruding bars 14, 15: first and second organizations
20: an opening part 21: head part
22: anvil head 23: staple receiver
24: Anvil 25:
26: protrusion 27:
28: anvil shaft 30: handle portion
31: lever 32: connecting member
33: safety clip 34: staple drive shaft
35: first power converting unit 40:
41: drive motor 42: anvil head drive shaft
43: second power converting unit 50:
60: setting unit 70:
80:

Claims (8)

An anastomotic site that fires staples at an anastomotic site and anastomoses the anastomotic site,
A handle portion for generating a pressing force for emitting a staple by an operation of a practitioner,
A driving part for generating a driving force to move the anvil head provided in the striking part in the forward and backward directions,
And a control unit for controlling the driving of the driving unit to adjust the strength of pressing the anastomosing part by adjusting the distance between the head part and the navel head based on the set intensity set by the operator. The method according to claim 1,
Further comprising a setting unit configured to set the setting intensity from the operator,
Wherein the setting unit is provided with a selection button or a switch for setting the setting intensity to be squeezed from the practitioner to a plurality of stages. 3. The apparatus of claim 2, wherein the handle portion
A lever which generates a pressing force by a rotation operation of the operator and
And a staple driving shaft that receives a pressing force from the lever and receives a staple received in a staple receiving hole provided in the head portion, and transmits a pressing force to press the staple toward an anvil formed in the anvil head. 3. The apparatus of claim 2, wherein the driving unit
A drive motor driven by power supply and
And an anvil head driving shaft which receives driving force generated by the driving motor and transmits the driving force to a trocar cap provided on the head unit and linearly moves the anvil head coupled to the trocar cap in the forward and backward directions. 3. The method of claim 2,
Wherein the control unit includes a memory in which the distance between the head unit and the anvil head is matched and stored for each stage of the set intensity,
And generates a control signal for moving the anvil head in the forward and backward direction according to the set intensity and controlling driving of the driving unit to be a distance corresponding to the set intensity. A method for adjusting the compression strength of a circular knit machine having the structure according to any one of claims 1 to 5,
(a) setting a compression strength to be applied to an anastomotic site from an operator using a setting unit,
(b) generating, by the control unit, a control signal for adjusting the compression strength based on the setting intensity set in (a)
(c) adjusting the distance between the head portion and the envelope head by moving the envelope head in the forward and backward direction based on the control signal at the driving portion, and
(d) transferring operation force for rotating the lever of the handle portion to the head portion to fire staples to join the anastomotic site
And adjusting the strength of pressing the anastomosing region by adjusting the distance between the head portion and the navel head on the basis of the setting strength set by the practitioner. The method according to claim 6,
Wherein, in the step (a), the setting unit sets any one of setting strengths set to a plurality of stages from a practitioner by a selection button or a switch operation. 8. The method of claim 7,
Wherein the control unit stores the distance between the head unit and the anvil head for each stage of the set intensity and stores the distance in a memory and moves the anvil head in the forward and backward direction according to the set intensity to obtain a distance corresponding to the set intensity And a control signal for controlling the driving of the driving unit is generated.

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