JP2002282257A - Medical needle-holder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a medical needle holder enabling an unskilled surgeon to perform suitable suture in a deep and narrow suture region difficult to be sutured in suture in a surgical operation. SOLUTION: This medical needle-holder is provided with an oscillating mechanism 23 adapted to oscillate a suture needle holder 2 at the tip by operating a lever 21 of a hand holder 1 on this side and feeding back an operating wire rod 22.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a medical needle holder used for a surgical operation.

[0002]

2. Description of the Related Art As this kind of conventional medical needle holder, for example, there is one shown in FIGS. This medical needle holder comprises a pair of bars 51, 5
The front end side of 2 is gripping portions 51a and 52a for gripping a suture needle, and the rear end side is a pair of operation levers 51b and 52b. Ring portions 53 and 54 are formed at the ends of the operation levers 51b and 52b, respectively, so that a finger can pass therethrough. The grippers 51a and 52a are opened and closed by opening and closing the operation levers 51b and 52b. Further, the ring portion 5 of the operation levers 51b, 52b
The gripping parts 51a, 52
a, the operation levers 51b, 5
A locking portion 55 for locking 2b is provided. The locking portion 55 is formed so as to protrude from the operation levers 51b and 52b so that several stages of locking teeth 55a and 55b face each other.

When using such a medical needle holder to perform suturing with a suturing needle, for example, for replacement and repair of a malfunctioning heart and its surrounding blood vessels, the surgeon sutures the grippers 51a, 52a. One end of the needle is grasped, and the tip of the suturing needle is applied to the suturing site at an appropriate insertion angle to start suturing. Then, at the same time as the grippers 51a and 52a are rotated, the entire needle holder is moved along the arc of the suturing needle to minimize damage to the suturing site. The appropriate insertion angle referred to here is an angle at which the position at which the suture needle tip of the suture site comes out as a result of the movement of the suture needle gripped by the grippers 51a, 52a matches the position required by the surgeon. is there.

[0004]

However, in the conventional medical needle holder, it is necessary to largely bend the entire arm holding the needle holder depending on the state of the suturing portion and to rotate the suturing needle in that state. Performing this operation several tens of times in a short time requires many years of skill for the surgeon. Above all,
The suturing operation at the deep part of the surgical field is limited by conventional suturing with a needle holder, and it may be necessary to perform an operation with several thoracotomy, and the burden on the patient and the surgeon is enormous. It is. In addition, the inability to suture may result in death during the operation or stop the operation itself.

In view of the above, the present invention has been made to solve the above-mentioned conventional problems. In this invention, the grip of the suture needle can be swung by operating the lever at hand, and the grip of the suture needle can be moved by operating the lever at hand. A medical needle holder that can perform opening and closing operation and angle adjustment, and can perform appropriate suturing in a deep and narrow suturing site where a suturing operation in a surgical operation is difficult even without a skilled surgeon. It was made for the purpose of providing.

[0006]

Therefore, the medical needle holder of the present invention operates the lever 21 of the hand grip 1,
It is provided with a swing mechanism 23 that swings the suture needle grasping body 2 at the distal end by feeding back the operation wire 22.

Further, the medical needle holder of the present invention operates the lever 31 of the hand grip 1 to feed back the operating wire 32 to the medical needle holder, thereby gripping the suture needle at the distal end. An opening / closing mechanism 33 that opens and closes the body 2 is provided.

Further, in the medical needle holder according to the present invention, the intermediate connector 3 connected to the suture needle gripper 2 at the distal end of the medical needle holder is rotated to operate the needle holder 2. Is provided with an angle adjustment mechanism 41 for fixing the rotation angle to an appropriate rotation angle.

In the medical needle holder of the present invention, the oscillating mechanism 23 includes an outer peripheral groove formed at a lower end of a circular body 24 below a lever 21 provided above a front end of the hand grip 1. 24a and an outer peripheral groove 25a formed in a circular body 25 of the cross joint 9 connected to the front end of the intermediate connector 3.
The operation wire 2 is passed through the hollow portion Sa of the intermediate connector 3.
It is assumed that 2 is crossed over.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the medical needle holder of the present invention will be described below in detail with reference to the drawings.

As shown in FIGS. 1 to 3, the medical needle holder of the present invention operates the lever 11 of the hand grip 1 to feed back the operating wire 12 so that the distal end of the needle can be gripped. An eccentric rotation mechanism 13 for eccentrically rotating the body 2 is provided, and a lever 21 of the hand grip 1 is operated to operate the operation wire 2.
2 is provided with a swinging mechanism 23 for swinging the suture needle gripping body 2 at the distal end by operating the lever 31 of the hand gripping body 1 to feed back the operation wire 32. Thus, an opening / closing mechanism 33 for opening and closing the suture needle grasping body 2 at the distal end is provided, and the intermediate connector 3 connected to the suture needle grasping body 2 at the distal end is rotated to operate the suture needle grasping body 2. Is provided with an angle adjustment mechanism 41 for fixing the rotation angle to an appropriate rotation angle.

The hand grip 1 is a cylindrical body made of a synthetic resin or metal, provided with a lever 11 of the eccentric rotating mechanism 13 below a front end thereof, and a swing mechanism above the front end. 23 are provided, and the lever 31 of the opening / closing mechanism 33 is provided at the rear end.

The distal end of the upper body 2a and the lower body 2b, which are axially supported in an intersecting manner, are grippers 4a and 4b for gripping the suture needle, and the rear ends are grippers 4a and 4b. Operating units 5a and 5b. The operation units 5a and 5b are
The operating portion 5a is formed with an inclined sliding hole 6a that rises forward, the operating portion 5b is formed with a sliding hole 6b in the horizontal direction, and the suture needle gripping body is formed at the rear end. A circular body 7 having a center of rotation decentered with respect to the center line 2 is formed.

The intermediate connector 3 is a hollow tube made of synthetic resin or metal, and has a front end connected to a cross joint 9 via a joint 8 and a positioning groove 10 around the rear end. And the rear end thereof is inserted into the front end of the hand grip 1.

The eccentric rotation mechanism 13 includes a pulley 1 attached to a lever 11 provided below the front end of the hand grip 1.
4 and the outer peripheral groove 7a formed in the circular body 7 at the rear end of the suture needle grasping body 2, the hollow portion S of the intermediate connector 3
It is assumed that the operation wire 12 is passed over the line a.
The lever 11 has a finger hook 11a formed at one end and the pulley 14 fixed to the other end, and the center of the pulley 14 is pivotally supported below the front end of the hand grip 1; The index finger or the middle finger can be turned to the rear end side of the hand grip 1 within a turning angle of about 45 °.
The operation wire 12 is a tough wire made of a high-tensile fiber or a metal wire, and is fixed to the pulley groove 14a and the outer circumferential groove 7a by pins 15 and 16 so as not to idle around the pulley groove 14a and the outer circumferential groove 7a. It is assumed. The outer peripheral groove 7 a at the rear end of the suture needle grasping body 2 is perpendicular to the axis of the intermediate connector 3.

The eccentric rotating mechanism 13 constructed as described above
When the lever 11 is rotated from the state shown in FIG. 4 to the state shown in FIG.
Is returned in the intermediate connector 3 and the circular body 7 at the rear end of the needle grasping body 2 rotates, so that the suturing having a center line eccentric to the center of rotation of the circular body 7 is performed. Needle gripper 2
Will be eccentrically rotated. Therefore, the suturing needle held by the holding portions 4a and 4b of the suturing needle holding body 2 can be eccentrically rotated.

The swing mechanism 23 is connected to an outer peripheral groove 24 a formed at the lower end of a circular body 24 below the lever 21 provided above the front end of the hand grip 1, and to the front end of the intermediate connector 3. The operating wire rod 22 is extended over the outer peripheral groove 25a formed in the circular body 25 of the cross joint 9 through the hollow portion Sa of the intermediate connector 3. Lever 21
Is formed with a finger hook portion 21a at the upper end, a positioning groove 26 formed on the outer periphery of the intermediate portion, and a spring plunger 27 inserted from the outside of the hand grip 1 is engaged with the positioning groove 26. The rotation operation can be performed within a rotation angle of about 90 °. Operation wire 2
Reference numeral 2 denotes a tough wire made of a high-tensile fiber or a metal wire, which is fixed to the outer peripheral groove 24a and the outer peripheral groove 25a by pins 28 and 29, respectively, so that the outer peripheral groove 24a and the outer peripheral groove 25a do not idle. And In addition, the cross joint 9 has a front end formed with the circular body 7 of the suture needle grasping body 2.
The outer peripheral groove 25a of the cross joint 9 is inclined at about 45 ° with respect to the axis of the intermediate connector 3, but the angle can be made slightly smaller, or the axis of the intermediate connector 3 can be reduced. May be located parallel to or on this axis.

When the lever 21 of the swing mechanism 23 thus constructed is rotated in the direction of the arrow shown in FIG.
The circular trunk 24 rotates, the operation wire 22 is fed back in the intermediate connector 3, and the circular trunk 25 of the cross joint 9 rotates, so that the suture needle gripping the front end of the cross joint 9 is gripped. The body 2 swings.

The opening / closing mechanism 33 has a link 34 connected to a rotating end 31a of a lever 31 pivotally supported by a lower arm 18a of a bracket 1a connected to the rear end of the hand grip 1 by receiving the urging force of a spring 31d. A shaft 36b is attached to the upper half of the bracket 1a by receiving the urging force of a spring 36a, by applying one end of an operation wire 32a, which has been turned back by being bridged over a guide pulley 35a provided above the rotation center of the bracket 1a. And the operation wire rod 32a
Is passed through the hollow portion Sb of the hand grip 1 and the hollow portion Sa of the intermediate connector 3 to slide through the slide hole 6b formed in the lower body 2b of the suture needle grip 2, and a shaft hole 37a at the front end of the slide link 37. Into the slide pin 38a
An operation wire 32a that is folded by hanging over a guide pin 39 provided in front of the slide hole 6b.
Are connected to each other. Further, a guide pulley 35 provided below the rotation center of the link 34 is provided.
b, and one end of the folded operation wire 32b is connected to a shaft 36d attached to the lower half of the bracket 1a under the urging force of the spring 36c, and the operation wire 32b is gripped by the hand grip 1 Hollow part Sb
And slide through the hollow portion Sa of the intermediate connector 3, slide the slide hole 6b formed in the lower body 2b of the suture needle grasping body 2, and form the upwardly inclined body formed in the upper body 2a of the suture needle grasping body 2. The other end of the operation wire 32b is connected to a slide pin 38b that penetrates a shaft hole 37b at a rear end of a slide link 37 that slides in the slide hole 6a. The lever 31 is formed in a substantially L-shape, and the opposite side of the rotating end 31a is a finger hook portion 31b. The lever 31 or the little finger moves the hand grip 1 toward the front end side within a rotation angle of about 20 °. Can be rotated. The link 34 connected to the rotating end 31a has its center of rotation pivotally supported by the upper arm 18b of the bracket 1a, and rotates the pin 34a provided at the lower portion by receiving the urging force of the spring 31d. Slide pin 31 inserted inside end 31a
c is supported by the V-groove at the tip.

When the lever 31 of the opening / closing mechanism 33 constructed as described above is rotated from the state shown in FIG. 7 to the state shown in FIG. 8, the lower end of the link 34 is moved forward by the rotation of the rotation end 31a. As the upper end of the link 34 moves backward with the movement, the operation wire 32a is returned, and the operation wire 32a is returned.
The slide link 37 connected to the operation wires 32a, 32b slides in the slide hole 6b and the inclined slide hole 6a and moves to the front end side. Then
Since the slide pin 38b at the rear end of the slide link 37 advances along the inclined slide hole 6a, this advance rotates the upper body 2a about the support shaft, and the gripping portion 4a of the upper body 2a moves to the lower body 2b. , And the gripping portions 4a and 4b are opened.

When the lever 31 of the opening / closing mechanism 33 is rotated from the state shown in FIG. 8 to the state shown in FIG. 7, the upper end of the link 34 is moved forward by the rotation of the rotation end 31a, and Since the lower end of the link 34 moves rearward, the operation wire 32a is sent, the operation wire 32b is returned, and the slide link 37 connected to the operation wires 32a, 32b has the slide hole 6b and the inclined slide hole 6.
Slide a to the rear end. Then, the slide pin 38b at the rear end of the slide link 37 retreats along the inclined slide hole 6a.
a rotates around the support shaft, the grip 4a of the upper body 2a approaches the grip 4b of the lower body 2b, and the grip 4a and the grip 4
b is closed. At this time, the V-groove at the tip of the slide pin 31c connects the pin 34a of the link 34 with the spring 31d.
Is held by the urging force.

The angle adjusting mechanism 41 is provided with a spring plunger 42 (see FIG. 4) inserted from the outside of the hand grip 1 into the positioning groove 10 formed around the rear end of the intermediate connector 3 inserted into the front end of the hand grip 1. 6), and the intermediate connector 3 can be rotated by a lever 43 provided above the rear end of the intermediate connector 3.

The angle adjusting mechanism 41 thus configured
When the lever 43 is rotated, the engagement between the positioning groove 10 and the spring plunger 42 is displaced, the intermediate connector 3 rotates, and the suture needle gripper 2 connected to the intermediate connector 3 also rotates, At the rotation position, the spring plunger 42 is engaged with the positioning groove 10 again and fixed. Therefore, the suture needle grasping body 2 is fixed at the appropriate rotated start position.

In the medical needle holder of the present invention,
When operating the lever 11 of the eccentric rotation mechanism 13 and the lever 31 of the opening / closing mechanism 33, the lever 11 can be rotated to the rear end side of the hand grip 1 by the index finger or the middle finger, and the lever 31 is operated by the ring finger or the little finger. Since the handgrip 1 can be rotated to the front end side, the levers 11 and 31 can be easily operated while the handgrip 1 is gripped with one hand, and the operability is very good. Becomes

In the medical needle holder of the present invention,
The connection parts such as the hand grip 1 and the intermediate connector 3, the suture needle grip 2 and the intermediate connector 3, the suture needle grip 2 and the cross joint 9 are connected to the needle holder as necessary. It goes without saying that a metal M for protecting the invasion of blood or the like may be interposed or a purge mechanism having an appropriate structure may be provided.

[0026]

Since the medical needle holder of the present invention is constructed as described above, it is difficult to perform a suturing operation in a surgical operation even if the operation is not performed by a skilled surgeon. Appropriate suturing can be performed at the suturing site.

[Brief description of the drawings]

FIG. 1 is a rear view of the medical needle holder of the present invention.

FIG. 2 is a side sectional view of the medical needle holder of the present invention.

FIG. 3 is a side sectional view of the medical needle holder of the present invention, in which a portion of a hand grip and an intermediate connector are omitted.

FIG. 4 is a partially omitted side sectional view showing an operation state of an eccentric rotation mechanism of the medical needle holder of the present invention.

FIG. 5 is a partially omitted side sectional view showing an operation state of an eccentric rotation mechanism of the medical needle holder of the present invention.

FIG. 6 is a partially omitted rear view showing the operating state of the swing mechanism of the medical needle holder of the present invention.

FIG. 7 is a partially omitted side sectional view showing an operation state of an opening / closing mechanism of the medical needle holder according to the present invention.

FIG. 8 is a partially omitted side sectional view showing an operation state of the opening / closing mechanism of the medical needle holder according to the present invention.

FIG. 9 is a perspective view showing a closed state of the suture needle grip of the medical needle holder of the present invention.

FIG. 10 is a perspective view showing an open state of a suture needle grip of the medical needle holder of the present invention.

FIG. 11 is a perspective view showing a state in which a cross joint is connected to a suture needle gripper of the medical needle holder of the present invention.

FIG. 12 is an exploded perspective view of the suture needle gripper and the cross joint shown in FIG. 11;

FIG. 13 is a perspective view showing a closed state of a suturing needle gripper of a conventional medical needle holder.

FIG. 14 is a perspective view showing an open state of a suturing needle holder of a conventional medical needle holder.

DESCRIPTION OF SYMBOLS 1 Hand gripping body 2 Suture needle gripping body 3 Intermediate connector 9 Cross joint 11 Lever 12 Operation wire rod 13 Eccentric rotation mechanism 14 Pulley 14a Pulley groove 21 Lever 22 Operation wire rod 23 Swing mechanism 24 Circular torso 24a Outer peripheral groove 25 Circular trunk 25a Outer peripheral groove 31 Lever 32 Operating wire 33 Opening / closing mechanism 41 Angle adjusting mechanism Sa Hollow part

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Yoshiyuki Goto 3-11-18 Momoyamadai, Tarumizu-ku, Kobe-shi, Hyogo F-term (reference) 4C060 BB23 GG06

Claims (4)

[Claims] An operation wire (22) is fed back by operating a lever (21) of a hand grip (1),
A medical needle holder comprising a swing mechanism (23) for swinging a suture needle gripper (2) at the tip. 2. By operating the lever (21) of the hand grip (1) to feed back the operation wire (22),
It is provided with a swing mechanism (23) for swinging the suture needle grasping body (2) at the tip, and further operates the lever (31) of the hand grasping body (1) to feed the operation wire (32). A medical needle holder, comprising: an opening / closing mechanism (33) configured to open and close a suture needle grasping body (2) at the distal end by returning. 3. By operating the lever (21) of the hand grip (1) to feed back the operation wire (22),
It has a swing mechanism (23) for swinging the suture needle grasping body (2) at the tip, and operates the lever (31) of the hand grasping body (1) to feed back the operation wire (32). The opening and closing mechanism (33) for opening and closing the suture needle grasping body (2) at the distal end is provided, and the intermediate connector (3) connected to the suture needle grasping body (2) at the distal end is rotated. The medical needle holder according to claim 1 or 2, further comprising an angle adjusting mechanism (41) for operating and fixing the suture needle grasping body (2) at an appropriate rotation angle. 4. An outer peripheral groove (24a) formed at a lower end of a circular body (24) below a lever (21) provided above a front end of a hand gripper (1). )
And an outer circumferential groove (25a) formed in the circular body (25) of the cross joint (9) connected to the front end of the intermediate connector (3).
The medical needle holder according to any one of claims 1 to 3, wherein an operation wire (22) is laid over the hollow portion (Sa) of the intermediate connector (3).