KR102059260B1 - Medical arthroscopy and cannula therefor - Google Patents

Abstract

The present invention discloses a tow arthroscopic cannula.
To this end, the present invention is an insertion tube having an inner diameter, and a cannula body extending to a predetermined length so as to be inserted into the lesion site of the human body; An expansion member inserted into a lesion site and expanded to fix the cannula body to a location of a lesion and to form a procedure securing space by lifting the bottom of the skin or muscle at the location of the lesion; A control member formed on the inner diameter of the cannula main body and configured to induce a state in which the expansion member is expanded and retracted, and a control unit provided on the cannula main body to provide a traction force to the tow body; It is possible to secure the treatment space with the muscle bottom of the lesion site with the configuration including the ease of the procedure as well as the surgical space is secured has the advantage of reducing the time required for the procedure.

Description

MEDICAL ARTHROSCOPY AND CANNULA THEREFOR}

The present invention relates to a towable arthroscopy cannula for stabilizing the surgical procedure by securing space during surgery while looking inside the lesion during patient surgery.

   Surgery is divided into incisions that operate by cutting the skin, and in contrast, non-incision methods that operate without cutting the skin.

   The incision method cuts the skin so that it can open the skin in the operating room, so the operating space is secured, so that the operation can be performed smoothly.

   Non-incision method is to form a small hole of about 3 ~ 5mm in the surgical site without cutting the skin, through the hole to insert a cannula and to treat the affected area under the skin with surgical instruments.

   Although the non-incision method has the advantage that the scar is smaller than the incision method, the operator does not operate by looking directly at the glands, but the operator has a tendency to operate depending on his or her senses, so the recurrence rate is higher than the incision method. Have

    In order to solve this problem, conventionally, Korean Patent Publication No. 10-2015-0128312 (hereinafter referred to as "selection") has been proposed for arthroscopy and laparoscopic surgery cannula.

The selection is inserted into the skin tissue of the human body, it is formed soft, the inside is formed hollow, the thread is formed on the surface, the front end is inserted into the support plate formed integrally to prevent falling out of the skin tissue ; A disk screwed with the thread and in contact with the skin tissue to fix the insertion tube; A cuff coupled to the front end of the insertion tube and in contact with the inner side of the skin tissue; An air injection unit connected to the cuff so as to space the skin cuff and the bone by inflating the cuff by injecting air into the cuff; And a pneumatic pressure control unit connected to the cuff to control the air pressure of the cuff by discharging the air introduced into the cuff to the outside.

    Such a selection is first, the cuff is possible to expand and contract the upper and lower left and right sides of the insertion tube penetrating the skin tissue is improved surgical vision has the effect of shortening the operation time and easy operation.

   Second, by forming a thread-shaped thread on the surface of the insertion tube can be easily inserted by the rotation when inserting the insertion tube into the skin tissue has the effect of making the operation easier.

   Third, the air pressure control unit for adjusting the air pressure of the cuff and the water injected during the operation and blood and liquid chemicals generated during the operation can be easily discharged to the outside to shorten the operation time and improve the operating environment. There is.

   However, since the selection is a structure that uses an air injectable cuff to separate the skin tissue and bones, the inconvenience of having to inject and remove air before and after the procedure is inflated. There is a variety of problems, such as the cuff obstructs the treatment space is not easy to secure space.

KR Patent Publication No. 10-2015-0128312 (published Nov. 18, 2015)

The object of the present invention is to facilitate the operation of lifting the lifting body made of a support piece in the front end portion of the insertion tube penetrating the skin tissue so that the field of view of the medical staff during surgery by lifting the bottom of the skin or muscle.

In addition, an object of the present invention is to form a cannula main body so that it can be inserted smoothly when inserted into the skin tissue to proceed smoothly the operation of the surgery.

In addition, an object of the present invention is to provide a simple and stable configuration of the mechanical structure to be inserted into the lesion position to lift the skin or the bottom of the muscle to facilitate its operation and handling.

A tow arthroscopic cannula is introduced.

To this end, the present invention extends to a predetermined length so as to be inserted into the lesion site of the human body cannula body formed with an insertion tube having an inner diameter; An expansion member which is inserted into the lesion site and then expanded so as to form a procedure securing space by lifting the bottom of the skin or muscle at the lesion location so that the cannula body is fixed at the lesion location; A towing body installed at an inner diameter of the insertion tube to induce an expanded state of the expansion member; And a control member provided on the cannula body and having a button body to provide traction to the tow body. It includes.

The present invention implements the operation of lifting the lifting body made of a support piece in the front end portion of the insertion tube penetrating through the skin tissue to lift the skin or the bottom of the muscle to facilitate the securing of the field of vision during surgery, the cannula body soft It proceeds smoothly by inserting it into the skin tissue so that it can be inserted smoothly. The mechanical structure that lifts the bottom of the skin or muscle is inserted into the lesion position. Various effects are realized, such as facilitation.

1 is a perspective view of an arthroscopic cannula to which the present invention is applied;
Figure 2 is a cross-sectional view showing the internal structure of the arthroscopic cannula to which the present invention is applied,
3 is a cross-sectional view taken along line AA ′ of FIG. 2;
Figure 4 is a partially enlarged state diagram for the expansion member of the present invention,
5 is a state in which the insertion tube is secured to the treatment space by the expansion member in the lesion position of the present invention,
Figure 6 is a cross-sectional view showing a structure for the expanded state of the expansion member in the present invention,
Figure 7 is a flow chart of the operation state of the cam piece and the induction pin of the control button body in the present invention, (a) is an unfolding state, (b) is a state unfolding, (c) is a state of folding attempt,
8 is a plan view of the slide lock and the guide pin of the control button body of the present invention,
9 is a plan exploded view showing the configuration of the lift body of the expansion member of the present invention,
10 is a state sectional view showing an embodiment of the present invention.

Specific embodiments in which the present invention may be practiced are described below with reference to the accompanying drawings.

These embodiments are described in sufficient detail to enable those skilled in the art to practice the invention, and it should be understood that the various embodiments of the present invention are different from one another, but need not be mutually exclusive.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily implement the present invention.

1 is a perspective view of an arthroscopic cannula to which the present invention is applied.

Figure 2 shows a cross-sectional view showing the internal structure of the arthroscopic cannula to which the present invention is applied.

The arthroscopic cannula of the present invention is an insertion tube 110 having an inner diameter 112 sufficient to inject a drug or extract a body fluid for a muscle procedure, and a cannula extending to a predetermined length so as to be inserted into a lesion position of a human body. The main body 100 is provided.

Insertion tube 110 of the cannula body 100 should be maintained in a fixed state inserted into the lesion site.

To this end, the cannula main body 100 is fixed to the lesion position by the insertion portion of the insertion tube 110 is expanded, and in the fixed state, so as to form a procedure secured by lifting the bottom of the skin or muscle at the lesion position. An expansion member 200 is provided.

The expansion member 200 is smoothly inserted into the lesion position, the configuration is required to achieve a stable fixed state when inserted into the lesion position.

Therefore, in the present invention, the expansion member 200 is installed and spread on the outer diameter 113 of the cannula body 100.

The extension member 200 is made up of a traction body 310 for inducing the movement and unfolding, and the button body 350 is installed on the cannula body 110 to provide a traction force to the traction body 310 The control member 300 is provided.

3 is a cross-sectional view taken along line AA ′ of FIG. 2, and the internal structure of the cannula body is confirmed.

As the inner diameter 112 of the insertion tube 110 of the cannula body 100, a guide ring 150 having a guard hole 152 formed at the center thereof is further mounted.

This is to allow the lifting and lowering movement state of the tow body 310 to be guided along the guide hole 152 in the inner diameter 112.

4 is a partially enlarged state diagram of the expansion member of the present invention.

A plurality of points of the outer diameter 113 of the insertion tube 110 of the cannula body 100, that is, the support protrusion 120 in which the expansion member 200 is installed at the position inserted into the lesion part may protrude.

In the inner diameter 112 of the insertion tube 110 at the position where the support protrusion 120 is formed, the supporting jaw 130 is formed so that the expansion member 200 is supported in an unfolded state by rotation.

The support jaw 130 serves as a support to make the expanded state structurally stable when the expansion member 200 is rotated and expanded in the insertion pipe 110.

5 is a state diagram in which the cannula is inserted into the lesion position in the present invention to secure the treatment space by the expansion member.

Figure 6 is a cross-sectional view showing a structure for the expanded state of the expansion member in the present invention.

The expansion member 200 is a support piece 211 of a unit form, a plurality of installed on the outer diameter 113 of the insertion tube 110 of the cannula body 100 is spread at the same time, the lifting and lifting the lifting body 210 Is installed.

The lift body 210 has a larger diameter than the cannula body 100 when it is unfolded and forms a diameter similar to the outer diameter of the cannula body 100 when lifted up.

At this time, a larger diameter than the cannula body 100 is formed when it is unfolded, and the large diameter forms a fixed state of the cannula body 100 at the lesion site.

9 is a plan exploded view showing the configuration of the lift body of the expansion member in the present invention.

Several support pieces 211 of the lift body 210 are installed on the support protrusion 120, the pin hole 213 is drilled in the side surface of the support piece 211, one side of the support piece 211 The slit hole 215 is formed at the end.

The support piece 211 is positioned in the support protrusion 120 protruding from the outer diameter 113 of the insertion tube 110 to allow the point pin 218 to be inserted.

In addition, the guide pin 323 is inserted into the slit hole 215 of the support piece 211 in a state in which the support bar 333 of the towing body 310 to be described later is inserted.

Accordingly, the lift body 210 composed of several support pieces 211 is formed to be unfolded or retracted from the outer diameter of the insertion pipe 110 with the point pin 218 as the axis by the support teeth of the towing body described later. do.

Figure 7 is a flow chart of the operation state of the cam piece and the induction pin of the control button body of the present invention, (a) is an unfolded state, (b) is a state unfolded, (c) is a state of folding,

The expansion member 200 installed on the outer diameter 113 of the cannula body 100 is controlled by the control member 300 installed to cross the inner diameter of the insertion tube 110.

The control member 300 includes a button body 350 for determining whether the control member 300 is to be unfolded or retracted, and the expansion member 200 is inserted into the insertion pipe by the driving force of the button body 350. It is composed of a traction body 310 to achieve a sliding and rotating action to unfold at the outer diameter of (110).

The towing body 310 is a rod-shaped slide is inserted into the guide hole 152 formed in the center of the guide ring 150 and one end is connected to the button body 350 and the other end is the lift body 210 It operates in the inner diameter 112 of the insertion tube 110 by operating the button body 350 in a state connected to.

Figure 8 is a plan view of the slide lock and the guide pin of the control button body of the present invention.

A link piece 320 having a slide hole 321 is formed at an upper end of the towing body 310 so as to be in contact with a horizontal activity of the button body 350 to achieve a vertical action, and a button on the link piece 320. Induction pins 323 are provided in contact with the driving force of the sieve 350.

In addition, a fixed hub 330 for installing a plurality of the support pieces 211 is formed at the lower end of the traction body 310 of the control member 300.

The fixing hub 330 is provided with a plurality of support bars 333 and the support bars 333 are connected to the pivot pin 216 in the slit hole 215 of the support piece 211.

The cam piece 316 is transmitted to the induction pin 323 by the button body 350 by the button body 350, and the traction body 310 received the horizontal movement force is the insertion tube 110 of the cannula body 100. ) To achieve the up and down activity, several supporting pieces 211 are unfolded or folded at the outer diameter 113 of the insertion tube 110.

Such, the unfolded or retracted state of the support pieces 2110 is made by the button body 350.

The button body 350 cross-connected with the traction body 310 is provided with a slide lock stand 360 is installed across the inner diameter 112 of the insertion pipe (110).

The slide lock stage 360 exposed by the outer diameter 113 of the insertion tube 310 is provided with a compression spring 353 and a button 351, and when the button 351 is pressed, the elastic restoring force of the compression spring 353 is applied. By this, the slide lock stage 360 is restored to its original position.

The cam piece 361 having the inclined side 362 is formed to protrude up and down the traction body 310 on one side to the surface of the slide lock (360).

An upper end of the inclined side 362 is provided with a lock groove 363 which guides the lift of the towing body 310 and the unlock state.

According to the present invention constituted as described above, the slide lock stand 360 is horizontally pressed by pressing the button body 350 of the control member 300 in a state where the insertion tube 110 of the cannula body 100 is inserted into the lesion site. While moving, the inclined side 362 of the cam piece 361 pushes the guide pin 323 in contact with it as shown in FIG. 7 (a), so that the traction body 310 is formed at the inner diameter 120 of the insertion pipe 110. It becomes the state to move up.

When the towing body 310 is moved upward, the support pin 333 installed in the fixed hub 330 located at the lower end of the insertion pipe 110 is pulled by the length to move, and the rotation pin 216 inserted into the slit hole 215. A plurality of support pieces 211 connected by) is made to rotate the point pin 218 inserted into the support protrusion 120 in the axis.

That is, the slide lock base 360 is horizontally moved from the insertion pipe 110 by pressing the button body 350, and the guide pin 323 in contact with the cam piece 361 of the slide lock base 360 is inclined. Since the state is moved along the angle formed in the 362, the traction body 310 is in a state in which the vertical movement.

By the vertical movement of the traction body 310, the support bar 333 is in a pulled state, and the plurality of the support pieces 211 are simultaneously pulled by the support bar 333 to the outer diameter of the insertion tube 110. 6, the state becomes unfolded as shown in FIG. 6, and the lift body 210 forms a diameter larger than the diameter of the insertion pipe 110.

When the button body 350 is pressed deeply, the guide pin 323 of the traction body 310 moves along the inclined side 362 of the cam piece 361 and enters the lock groove 363 to achieve a locked state.

As such, the state where the guide pin 323 is caught by the lock groove 363 of the cam piece 361 is inserted into the support protrusion 120 of the insertion pipe 110 so that the support pieces 211 are rotated and unfolded. A diameter larger than the diameter of the insertion tube is formed at the bottom of the tube 110.

At this time, the supporting piece 211 in the unfolded state is the support piece 333 of the pull body 310, the slit hole 215 is in contact with the supporting jaw 130 of the insertion tube 110, so the supporting piece ( The stretched outer edge of 211) increases the contact area with the skin or the bottom of the muscle.

In addition, when pulling the insertion tube 110 inserted into the lesion site in order to secure the treatment space for the optimal procedure, evenly spaced up to the outer edge of the support piece 211, the dispersion of the force is spread to the bottom of the skin or muscle It can be lifted up to be formed.

The support piece 211 of the lift body 210 unfolded from the outer diameter of the insertion tube 130 is pressed more deeply by pressing the button 351 of the button body 350 that is pressed and the slide lock base 360 moves horizontally while the lock groove ( 363 is also moved so that the guide pin 323 is out of the lock groove 363.

As such, when the guide pin 323 is released from the lock groove 363, the slide lock stage 360 returns to the initial position by the return force of the compression spring 353, and the lock groove 363 of the slide lock stage 360 is provided. Since the guide pin 323 of the traction body 310 moving along the back is also supported, the support bar 333 of the traction body 310 forms a state of pressing the pivot pin 216 of the unfolded support piece 211.

When the pivot pin 216 of the support piece 211 is pressed by the support bar 333, the support piece 211 is rotated with respect to the point pin 218, and the unfolded state is retracted so that the diameter is reduced. Since the bottom of the skin or muscle is placed, the cannula body 100 can be removed at the lesion location.

Example 1

10 is a view showing an embodiment of the present invention, in forming the tow arthroscopy cannula inclined surface 362 in the cam piece 361 formed on the slide lock stage 360 of the control member 300 To be formed in a <'shape.

Since the inclined surface 362 is in the same vertical direction as the moving direction of the link piece 320 provided in the insertion pipe 110 inserted into the lesion part, the button body 350 of the control member 300 is pressed in the horizontal direction. When moved, the guide pin 323 being in contact with the inclined surface 362 is pushed in the vertically upward direction by the inclination angle of the inclined surface 362, so that the link piece 320 is moved in the vertical direction. .

The lock groove 363 is formed to be connected in the horizontal direction above the inclined surface 362 having the '<' shape.

Accordingly, the vertical movement state of the link piece 320 is stopped while being pushed by the inclined surface 362 and the guide pin 323 enters the lock groove 362.

In addition, since the retracting body 310 of the link piece 320 which is vertically moved pulls the support teeth 330, the supporting piece 211 of the lift body 210 is rotated about the point pin 218 by the axis. It becomes a state.

In this way, the support piece 211 is formed by a diameter larger than the diameter of the insertion tube 110 to the skin or the bottom of the muscle to be formed to be able to hear the skin or the bottom of the muscle to secure the treatment space and vision do.

Pressing the button 351 in the state where the guide pin 323 is locked to the lock groove 363, the guide pin 323 is released from the lock groove 363 and at the same time '<' shape as the return elastic force of the compression spring (353) Is moved along the inclined surface 362 of.

At this time, the link piece 320 is in a vertically descending state, and at the same time, the support piece 333 is opened so that the supporting piece 211 in the unfolded state is retracted, so that the skin and muscles heard are in their original positions. Is returned.

Although the embodiments of the present invention have been described above with reference to the accompanying drawings, the present invention is not limited to the above embodiments and can be manufactured in various forms, and a person of ordinary skill in the art to which the present invention pertains. It will be appreciated that the present invention may be embodied in other specific forms without changing the technical spirit or essential features of the present invention.

Therefore, it should be understood that the embodiments described above are exemplary in all respects and not restrictive.

100: cannula body 110: insertion tube 120: support protrusion
130: base 150: guide ring 200: expansion member
210: lift body 211: support piece 213: pin ball
215: Slit hole 216: Rotating pin 218: Branch pin
300: control member 310: traction body 320: link piece
323: guide pin 330: fixed hub 333: support
350: button body 360: slide lock stand 361: cam piece

Claims (8)

A cannula body extending in a predetermined length to be inserted into the lesion site of the human body and having an insertion tube having an inner diameter;
An expansion member configured to fix the cannula body for forming a procedure securing space by lifting the bottom of the skin or muscle at the lesion position by a lift body extending from the insertion tube outer diameter inserted into the lesion site;
A towing body installed at an inner diameter of the insertion tube to induce an expanded state of the expansion member; And
A control member which is installed in the cannula body and comprises a button body for providing a traction force to the towing body; Including;
The cannula body,
A guide ring is installed on the inner diameter of the insertion tube with a guide hole formed in the center thereof, and the guide ring is further mounted to guide the lifting body along the guide hole at the inner diameter of the insertion tube.
On the outer diameter of the insertion tube protruding support protrusion for installing the expansion member,
The inner diameter of the insertion tube in the position where the support projection is formed, characterized in that the supporting jaw is formed to support the expanded state of the expansion member, retractable arthroscopic cannula. delete delete The method of claim 1,
The expansion member,
A lift body installed at a support protrusion formed at an outer diameter of the insertion tube and having a larger diameter than that of the cannula body during rotation thereof;
A point pin inserted into the pin hole of the lift body through the support protrusion to rotate the plurality of support pieces of the lift body at the outer periphery of the cannula body;
And a pivot pin inserted into the slit hole of the support piece to be penetrated through the traction body, respectively. The method of claim 1,
The control member,
A button body slid through the cannula body and sliding in a state crossing the inner diameter of the insertion tube;
It is installed through the guide ring of the inner diameter of the insertion tube and one end thereof is connected to the button body and the other end is made of a traction body sliding in the inner diameter of the insertion tube by the button body operation to form a state connected to the lift body. Towable arthroscopic cannula. The method of claim 5,
The button body,
Protruding from the slide lock stage that is installed across the inner diameter of the insertion tube is formed inclined side for the lifting movement of the traction body to the side end,
A cam piece provided with a lock hole for inducing locking or releasing of the moving state of the towing body at an upper end of the inclined side;
The rod exposed to the outer diameter of the insertion tube is characterized in that the compression spring and the button is provided, retractable arthroscopic cannula. The method of claim 1,
Traction body of the control member,
A link piece formed on an upper end of the towing body and having a slide hole for guiding a horizontal sliding operation of the cam piece of the button body;
A towable arthroscopy cannula, characterized in that the slide pin is installed through the upper end position of the link piece is made of a slide lock coupled to the guide pin in contact with the cam piece of the button body. The method of claim 1,
Traction body of the control member,
A fixed hub formed at a lower end of the towing body,
Towing arthroscopy cannula characterized in that the support piece is connected to the slit hole of the lift body and the support piece is extended or folded at the outer diameter of the insertion tube by the lifting and lowering of the traction body.

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