JP2011098160A - Surgery needle holder - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a needle holder which exhibits a high operability in puncture, penetration or the like of body tissue by a suture needle. <P>SOLUTION: The needle holder 1 has a handle part 2, a needle holder axis 3, a sliding part 4, and a communication rod 5 for communicating the handle part and the sliding part through the inside of the needle holder axis. The sliding part has a needle-abutting surface which is parallel to and has an identical shape with the end surface of the needle holder axis on its side facing the end surface of the needle holder axis. A needle gripping space is formed between the needle abutting surface and the end surface of the needle holder axis. The communication rod can be drawn in toward the handle part and pushed out after being drawn freely by operation of the handle part. By drawing the communication rod in, the needle-abutting surface gets closer to the end surface of the needle holder axis. As a result, the needle gripping space is reduced and the needle is grasped between the needle-abutting surface and the end surface of the needle holder axis. By pushing the communication rod out, the needle-abutting surface is separated from the end surface of the needle holder axis. As a result, the reduced needle-gripping space comes back and the gripped needle is detached. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a surgical needle holder that is effective for endoscopic surgery. More specifically, the present invention relates to a surgical needle holder for performing tissue suturing and ligation operations with suture needles in the abdominal cavity, chest cavity and other body cavities.

  Conventionally, various operations that have been performed by laparotomy have now been performed by endoscopic surgery that is performed in non-laparotomy in many areas. Target diseases include, for example, cholecystectomy, stomach, large intestine, rectum, liver, pancreas, hernia, appendicitis, ovary, uterus, kidney and other abdominal surgery, as well as lung, thyroid, breast, etc. Surgery is also performed under a thoracoscope. In this endoscopic operation, for example, a plurality of tubes called trocar tubes are inserted into the abdominal cavity, the inside of the body cavity is monitored by a camera inserted from one trocar tube, and various other trocar tubes By introducing surgical instruments such as forceps, surgery is performed in the body cavity while looking at the monitor. When a suture is performed in a body cavity such as the abdominal cavity or the thoracic cavity, a curved suture thread is generally used, and a surgical needle holder for operating the needle is used.

  For example, as illustrated in FIG. 4, the conventional needle holder 1 includes a handle portion 2 on the hand side, and can be opened and closed like scissors at the tip of the needle holder shaft 3 extending forward from the handle portion. A needle holding portion 9 is provided, and the needle holding portion 9 is operated by the handle portion 3 so that the needle holding portion 9 is in a closed state, whereby a suture needle is grasped (Patent Document 1).

  In general, at the time of suturing, the tip of the suturing needle must be opposed to the tissue to be punctured at right angles to puncture the tissue to be sewn. As described above, the suturing needle has a curved shape. Therefore, depending on the conventional opening / closing (needle gripping) structure of the needle holder 1, there is a problem that it is difficult to grip the suture needle at an appropriate position and angle. In particular, for example, in endoscopic surgery, there are limitations on the position and movable range of forceps such as a needle holder. Therefore, in order to perform complicated needle movement, it is necessary to hold the suture needle at an optimal position and angle. Although it is indispensable, as described above, it is difficult for the conventional needle holder to hold the suture needle at an appropriate angle, and the grasping force of the suture needle is not sufficient, so that a highly advanced technique is required for the operation. ing. Therefore, not only long-term training is required to acquire such a technique, but even a skilled person has a risk of causing surgical complications due to the extended operation time. Economic loss was also a big problem.

Japanese Utility Model Publication No. 5-88507

  The present invention has been made in view of the circumstances as described above, and can mainly easily and stably hold a suture needle in an endoscopic operation in a body cavity at a predetermined angle. An object of the present invention is to provide a needle holder excellent in operability such as puncture and penetration of a body tissue with a suture needle.

  In order to solve the above-described problems, the present invention provides a needle holder having the following features.

  First, a needle holder of the present invention includes a handle portion, a needle holder shaft provided in front of the handle portion, a slide portion provided in front of the needle holder shaft, and an interior of the needle holder shaft. A needle holder having a communicating rod for communicating the handle portion and the slide portion through the needle, the slide portion being parallel to the tip end surface of the needle holder shaft on the side facing the tip end surface of the needle holder shaft There is a contact surface, a needle gripping space is formed between this needle contact surface and the needle holder shaft tip surface, the communication rod is pulled into the handle portion side by operation of the handle portion, and Push-in after pulling is free, and the needle contact surface approaches the tip of the needle holder shaft by pulling the communication rod, and the needle gripping space is reduced accordingly. The needle can be gripped between the needle instrument shaft and the needle by pushing out the communicating rod. Contact surface is separated from the needle holder shaft distal end surface, along with this, by reducing needle gripping space is restored, it gripped needle can be desorbed.

  Secondly, in the needle holder of the present invention, the needle contact surface of the slide portion and the needle holder shaft tip surface are formed at right angles to the longitudinal direction of the needle holder shaft.

  Thirdly, in the needle holder of the present invention, the needle contact surface of the slide portion and the needle holder shaft tip surface are roughened.

  4thly, the needle holder of this invention has a rotation operation part in which the rotation operation of a slide part and a needle holder axis | shaft is possible.

  According to the needle holder of the present invention, since the suture needle can be easily and stably grasped at a predetermined angle, for example, complicated operation of the suture needle in an endoscopic operation in a body cavity is also stable. It can be carried out. Therefore, the quality of the operation is improved, the operation time is shortened, and the risk of surgical complications is reduced. In addition, it is possible to acquire techniques related to the operation of the suture needle in a relatively short period of time.

It is the whole figure which illustrates one Embodiment of the needle holder of the present invention, and an enlarged view of the needle holder tip. It is a schematic diagram which illustrates the holding | grip method of the needle | hook by the needle holder of the form shown in FIG. It is a schematic diagram which illustrates the grasping method of the needle by another embodiment of the needle holder of the present invention. It is a general view which shows an example of the conventional needle holder, and an enlarged view of the needle holder tip.

  An embodiment of a needle holder of the present invention will be described with reference to the drawings.

  FIG. 1 is an overall view illustrating an embodiment of the needle holder of the present invention and an enlarged view of the tip of the needle holder.

  As illustrated in FIG. 1, a needle holder 1 of the present invention includes a handle portion 2, a needle holder shaft 3 extending from the handle portion 2, and a slide provided in front of the needle holder shaft 3. It has the part 4 and the communication rod 5 which connects the handle | steering-wheel part 2 and the slide part 4 through the inside of the needle holder shaft 3.

  The handle portion 2 is a portion that operates the movement of the slide portion 4 via the communication rod 5. For example, as illustrated in FIG. 1, the handle portion 2 is a type that operates the slide portion 4 using a finger in the manner of scissors. In addition, it is possible to appropriately select a type for operating the slide unit 4 by gripping the grip with the palm of the hand.

  A needle holder shaft 3 extends forward from the handle portion 2. The needle holder shaft 3 can be, for example, a long member having a circular cross section, and can be formed integrally with the handle portion 2 or can be detachable as a separate body from the handle portion. You can also. The diameter of the needle holder shaft 3 can be appropriately determined according to the application, but can be set to 2.0 mm, 3.5 mm, 5 mm, 10 mm, or the like, for example. In the case of a needle holder used in endoscopic surgery, in general, the diameter of the needle holder shaft can be about 5 to 10 mm. Moreover, the length of the needle holder shaft 3 can also be appropriately determined according to the application, and can generally be about 20 to 45 cm.

  The tip of the needle holder shaft 3 is formed in a flat shape. The tip surface 3a of the needle holder shaft 3 can be formed, for example, at an angle orthogonal to the longitudinal direction as illustrated in FIG. The angle of the needle holder shaft tip surface 3a determines the grasping angle of the suture needle in relation to the needle contact surface 4a of the slide portion 4 described later. Further, the needle holder shaft tip surface 3a is preferably subjected to a rough surface processing such as a fine lattice-like groove, whereby the suture needle can be gripped more reliably.

  The needle holder 1 of the present invention has a slide portion 4 in front of the needle holder shaft 3. The slide portion 4 is communicated with the handle portion 2 via a communication rod 5 passing through the inside of the needle holder shaft 3.

  The communication rod 5 may be any shape and size that can be inserted into the needle holder shaft 3, and the specific shape and size are not limited. However, the communication rod 5 is formed with a protruding portion 5 a that protrudes forward from the distal end surface 3 a of the needle holder shaft 3 in a normal state where the handle portion 2 is not operated. The protrusion 5a can protrude from the tip surface 3a of the needle holder shaft 3 by about 3 to 10 mm in a normal state.

  In the example shown in FIG. 1, the slide portion 4 is integrally formed at the tip of the communication rod 5. The slide portion 4 has a needle contact surface 4a that is parallel to and has the same shape as the needle holder shaft tip surface 3a on the side facing the needle holder shaft tip surface 3a. That is, as described above, in the case where the needle holder shaft tip surface 3a is formed as a plane orthogonal to the longitudinal direction, the needle contact surface 4a of the slide portion 4 is similarly the longitudinal direction of the needle holder shaft. It is formed as a plane orthogonal to the direction. Here, the needle contact surface 4a, like the needle holder shaft front end surface 3a, is preferably subjected to a rough surface processing such as a fine lattice-shaped groove, so that the needle can be gripped more reliably. it can.

  Although the overall shape of the slide portion 4 is not particularly limited, it can be circular in cross section like the needle holder shaft 3, and the communication rod 5 is pulled toward the handle portion 2 as will be described later. It is preferable to form the needle holder shaft 3 and the slide portion 4 so that they are flush with each other when the contact surface 4a and the needle holder shaft tip surface 3a are in contact with each other. Furthermore, it is preferable that the tip of the slide part 4 has a smooth shape, for example, a hemispherical shape as illustrated in FIG. If the needle holder 4 has a structure that protrudes outward, there is a risk of damaging an organ or the like during surgery, but as shown in FIG. By forming the shape so as to be smooth, there is no risk of damaging an organ or the like during surgery, and the quality of surgery can be improved.

  In the normal state in which the handle portion 2 is not operated, the needle holder 4 of the present invention projects forward from the distal end surface 3a of the needle holder shaft 3 in the normal state in which the handle portion 2 is not operated. A needle gripping space 6 is formed around the protrusion 5a of the communication rod 5 between the surface 4a and the needle holder shaft tip surface 3a. The needle holder 4 of the present invention can hold a suture needle in the needle holding space 6.

  Furthermore, the communication rod 5 can be configured to be pulled into the handle portion 2 side by operating, for example, by putting a finger on and grasping the handle portion 2 as in the prior art. When the communication rod 5 is pulled toward the handle portion 2 side, the slide portion 4 at the tip of the communication rod 5 moves to the handle portion 2 side, and the needle contact surface 4a of the slide portion 4 moves to the needle holder shaft tip surface 3a. Accompanying this, the needle gripping space 6 between the needle contact surface 4a and the needle holder shaft tip surface 3a is reduced. As a result, the needle contact surface 4a and the needle holder shaft tip surface 3a can be brought into contact with or substantially in contact with each other.

  On the other hand, for example, by operating the handle part 2 by releasing the grip of the handle part 2, the drawn communication rod 5 can be pushed out. As a result, the needle contact surface 4a of the slide portion 4 is separated from the needle holder shaft tip surface 3a, and the slide portion 4 returns to a predetermined position before the communication rod 5 is retracted. Along with this, the needle gripping space 6 reduced by the retracting of the communication rod 5 also returns to a predetermined size.

  Next, a method for grasping a suture needle by the needle holder 4 of the present invention will be described. FIG. 2 is a perspective view illustrating the distal end portion of the needle holder of the present invention. FIG. 3 is a perspective view of a distal end portion illustrating another embodiment of the needle holder of the present invention.

  When a suture needle is gripped by the needle holder 4 of the present invention, as illustrated in FIG. 2A, first, in the needle gripping space 6 between the needle contact surface 4a and the needle holder shaft tip surface 3a. A curved suture needle 7 is arranged. At this time, it is preferable to arrange the suture needle 7 so that the tip of the suture needle 7 protrudes outward from the needle gripping space 6 to a desired length.

  Then, the handle portion 2 is operated to pull the communication rod 5 toward the handle portion 2 side. As a result, the slide portion moves together with the communication rod 5 to the handle portion 2 side, and the needle contact surface 4a of the slide portion 4 approaches the needle holder shaft tip surface 3a. Along with this, the needle gripping space 6 between the needle contact surface 4a and the needle holder shaft tip surface 3a is reduced. As a result, as shown in FIG. The needle is held between the needle contact surface 4a and the needle holder shaft tip surface 3a. In this way, since the curved suture needle 7 is sandwiched and held between the needle contact surface 4a and the needle holder shaft tip surface 3a, the suture needle 7 has the needle contact surface 4a and the needle holder shaft. It is securely and stably gripped at the angle at which the tip surface 3a is formed. Therefore, it is not necessary to change the suture needle 7 as in the prior art, and the suture needle 7 can be firmly held at a predetermined angle, and the suture needle 7 held between the surfaces rotates. Therefore, it is stable, and for example, complicated needle movement of a suture needle in an endoscopic operation in a body cavity can be performed easily and stably.

  More specifically, as illustrated in FIG. 2, when the needle contact surface 4a and the needle holder shaft tip surface 3a are formed as a plane orthogonal to the longitudinal direction, the suture needle is Gripped at right angles to the angle. According to the needle holder 1 of the present invention, the suturing needle 7 can be gripped at right angles to the longitudinal direction, so that the tip of the suturing needle 7 can be easily confronted with the tissue to be punctured at substantially right angles. Therefore, the suture operation of the tissue is facilitated, and in particular, the quality of the operation in the endoscopic operation in which a difficult needle operation is required can be improved, and the operation time can be shortened.

  On the other hand, as another embodiment of the needle holder 1 of the present invention, as illustrated in FIG. 3A, the needle contact surface 4a and the needle holder shaft tip surface 3a are arranged in the longitudinal direction of the needle holder shaft 3. It can also be set as the inclined surface which inclines with respect to. Other structures may be the same as those of the embodiment illustrated in FIG. In this case, as illustrated in FIG. 3B, the suture needle 7 is grasped by pulling the communication rod 5 in accordance with the inclination angle of the needle contact surface 4a of the slide portion 4 and the needle holder shaft tip surface 3a. be able to. Also in this case, since the suture needle 7 gripped between the surfaces does not rotate, the suture needle 7 is stable. For example, complicated operation of the suture needle in an endoscopic operation in a body cavity is easy and stable. Can be done. In this way, the angle between the needle contact surface 4a and the needle holder shaft tip surface 3a can be designed according to the needle angle of the suture needle that is optimal for the surgical method and surgical site.

  When the grasped suture needle 7 is detached, the drawn communication rod 5 is pushed forward by operating the handle portion 2. As a result, the needle contact surface 4a of the slide portion 4 is separated from the needle holder shaft tip surface 3a, and the slide portion 4 returns to a predetermined position before the communication rod 5 is retracted, and the communication rod 5 is retracted. Since the reduced needle gripping space 6 also returns to a predetermined size, the state before the communication rod 5 is retracted, that is, the state illustrated in FIGS. 2A and 3A is restored. Therefore, the suture needle 7 that is easily grasped can be detached.

  Further, as illustrated in FIG. 1, the needle holder 1 of the present invention has a rotation operation unit 8 between the handle portion 2 and the needle holder shaft 3 for enabling the needle holder shaft 3 to rotate. It can also be provided. For example, as shown by the arrow in FIG. 1, the rotation operation unit 8 can rotate itself, and the needle holder shaft 3 and the slide unit 4 can rotate according to the rotation of the rotation operation unit 8. It can be a structure. Therefore, for example, as illustrated in FIG. 2B, by operating the rotation operation unit 8 while holding the suture needle 7, the suture needle 7 is moved together with the rotation of the needle holder shaft 3 and the slide unit 4. Can be rotated. As described above, since the suture needle 7 can be freely rotated, the suture needle 7 can be opposed to the tissue to be sutured at a suitable position, and can be opposed to the tissue by the rotation of the suture needle 7. The tip of the suture needle 7 can also be punctured and penetrated into the tissue.

  Thus, since the needle holder 1 of the present invention can easily and stably hold the suture needle 7 at a predetermined angle, for example, the complexity of the suture needle 7 in an endoscopic operation in a body cavity. Can be easily and stably performed. Therefore, the quality of the operation is improved, the operation time is shortened, and the risk of developing surgical complications is reduced. In addition, it is possible to acquire techniques related to the operation of the suture needle 7 in a relatively short period of time.

DESCRIPTION OF SYMBOLS 1 Needle holder 2 Handle part 3 Needle holder axis | shaft 3a Needle holder axis | shaft front end surface 4 Slide part 4a Needle contact surface 5 Communication rod 5a Protrusion part 6 Needle gripping space 7 Suture needle 8 Rotation operation part 9 Needle part

Claims (4)

A handle portion; a needle holder shaft provided in front of the handle portion; a slide portion provided in front of the needle holder shaft; and a communication rod for communicating the handle portion and the slide portion through the inside of the needle holder shaft; A needle holder having
The slide portion has a needle contact surface parallel to and in the same shape as the needle holder shaft front end surface on the side facing the needle holder shaft front end surface, and the needle contact surface and the needle holder shaft front end surface A needle gripping space is formed between them, and the communication rod can be pulled into the handle portion side and pushed out after pulling in by operating the handle portion.
By pulling in the communication rod, the needle contact surface of the slide portion approaches the needle holder shaft tip surface, and the needle gripping space is reduced accordingly. The needle abutment surface is separated from the tip of the needle holder shaft by pushing out the communication rod, and the reduced needle gripping space is restored accordingly. Needle holder, wherein the needle is removable.   2. The needle holder according to claim 1, wherein the needle contact surface and the needle holder shaft tip surface of the slide portion are formed at right angles to the longitudinal direction of the needle holder shaft.   3. The needle holder according to claim 1, wherein the needle contact surface of the slide portion and the needle holder shaft front end surface are roughened.   The needle holder according to any one of claims 1 to 3, further comprising a rotation operation unit capable of rotating the slide unit and the needle holder shaft.

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