JP2011015716A - Forceps for aneurysm clip - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide forceps for an aneurysm clip which achieve the holding of the aneurysm clip without a grip and the separation of a clip biting portion from the clip subsequently to the closing of the pinchingly mounting portion of the aneurysm clip by gradually increasing the grip.SOLUTION: The forceps 20 for an aneurysm clip have a pair of nonintersecting facing levers 22 and 24 which can rotate with respect to a common fulcrum shaft 25. One sides from the common fulcrum shaft 25 are grip handle portions 22b and 24b and the other sides are the clip biting portions 22e and 24e having jaw portions 22d and 24d which receive the loop spring portion 2 of the aneurysm clip 1 by concavities 22c and 24c and bite artesian portions 5a and 5b. When the aneurysm clip 1 is held by the clip biting portions 22e and 24e, the pinchingly mounting portions 4a and 4b of the aneurysm clip 1 are kept in an opened condition against the spring force of the loop spring portion 2 by the urging force of the closing plate springs 26 and 28, and with the closing of the grip handle portions 22b and 24b, the clip biting portions 22e and 24e gradually open and the pinchingly mounting portions 4a and 4b gradually close.

Description

  The present invention relates to an aneurysm clip forceps for clamping an aneurysm clip to a root portion of the aneurysm and setting the same.

  As shown in FIG. 4, the aneurysm clip 1 clamped at the root of the cerebral aneurysm extends from, for example, a double looped spring portion (torsion spring) 2 to form an intersecting portion 3. The pair of sandwiched portions (blades) 4a and 4b and the loop-shaped spring portion 2 and the intersecting portion 3 have a pair of pressure-receiving portions 5a and 5b that are widened by rotating outwardly from each other. As the constriction force P is applied to the portions 5a and 5b against the torsion spring force of the loop-shaped spring portion 2, the pair of sandwiching portions 4a and 4b are gradually opened in a beak shape, and the constriction force P is removed. The pair of sandwiching portions 4a and 4b is structured to be gradually closed, and reference numeral 6 denotes an opening bridge for suppressing twisting associated with the opening of the pair of sandwiching portions 4a and 4b across the crossing portion 3. . The pair of sandwiching portions 4a and 4b is not limited to a straight shape, and various types such as a bent shape according to the mode of the root portion of the cerebral aneurysm to be clipped are known.

  An aneurysm clip forceps 10 for holding such an aneurysm clip 1 and setting it at the root of a cerebral aneurysm is formed by intersecting a pair of heel members 12 and 14 as shown in FIG. Is a heel structure pivotally supported by a shaft 15, and grip grip portions 12 a, 14 a are provided on the rear end side of the heel members 12, 14 with respect to the shaft 15, and the grip grip portions 12 a, 14 a are open plates into which the ends are inserted. The springs 16 and 18 are always urged to open, and the distal ends of the scissors members 12 and 14 with respect to the shaft 15 are clip holding portions 12b and 14b, and arteries are formed on the opposing inner surfaces of the clip holding portions 12b and 14b. Semicircular recesses 12c, 14c capable of receiving the loop-shaped spring portion 2 of the knob clip 1 are formed, and the jaws at the outer ends of the recesses 12c, 14c when the loop-shaped spring portion 2 is located in the recesses 12c, 14c. Part 1 d and 14d hit the tops of the pressure-receiving portions 5a and 5b of the aneurysm clip 1, and grip the grip grip portions 12a and 14a of the flange members 12 and 14, thereby closing the clip sandwiching portions 4a and 4b. The pressure portions 5a and 5b are narrowed so that the clip holding portions 12b and 14b of the aneurysm clip 1 are opened.

  6A is a side view showing a state in which the aneurysm clip 1 is inserted in a state where the grips of the grip krupp portions 12a and 14a are opened and the clip biting portions 12a and 14a are fully opened, and FIG. 6A is a side view showing a state in which the loop-shaped spring portion 2 of the aneurysm clip 1 is received in the recesses 12c and 14c of the clip holding portions 12b and 14b from the state of FIG. 6A, and FIG. The state in which the aneurysm clip 1 is held by the jaws 12d and 14d biting the tops of the pressed portions 5a and 5b of the aneurysm clip 1 while grasping and holding the grip krupp portions 12a and 14b a little from the state of (B) FIG. 6D is a side view showing the gripping krupp portions 12a and 14b from the state of FIG. 6C to close the clip biting portions 12b and 14b, and the pinching portion 4a of the aneurysm clip 1; 4b fully opened It is to side view.

JP-A-2006-81597 (FIGS. 1 to 3)

  The aneurysm clip forceps 10 having the above configuration has the following problems.

  In the opened state of the grip grip portions 12a and 14a, as shown in FIGS. 5 and 6A, the clip holding portions 12b and 14b are also fully opened, so that the aneurysm clip 1 is bitten by the clip holding portions 12b and 14b. When holding, as shown in FIG. 6 (B) and FIG. 6 (C), it is necessary to hold the grip grip portions 12a, 14a appropriately, and the aneurysm clip forceps 10 for the surgeon from the surgical assistant to the surgeon is required. In delivery, when the gripping force against the grip grip portions 12a and 14a is temporarily removed, the clip holding portions 12b and 14b open, so that the aneurysm clip 1 is likely to fall off. Further, the aneurysm clip 1 bitten and held by the clip biting portions 12b and 14b is extended to the cerebral aneurysm, and the grip portions 12a and 14a are further grasped and fully opened, and then the pinching portions 4a and 4b are cerebral artery. When the grip portions 12a and 14a are gradually loosened after straddling the root portions of the aneurysm and the sandwiching portions 4a and 4b are set at the roots, the surgical field is used for optimizing the sandwiching portions 4a and 4b. When the grip is narrow, attention is likely to concentrate on the gripping method of the grip grip portions 12a, 14a, and there is a moment when the grip strength retention is unintentionally removed, and the pinching portions 4a, 4b are closed by gradually decreasing the grip strength. Since the detachment of the clip holding portions 12b and 14b from the aneurysm clip 1 occurs, there is a possibility that the setting direction is inappropriate or the aneurysm clip 1 is dropped.

  Therefore, the present invention solves the above-mentioned problems, and the problem is that the clip follows the holding of the aneurysm clip at the clip biting portion with no gripping force and the clamping of the aneurysm clip by gradually increasing the gripping force. An object of the present invention is to provide an aneurysm clip forceps that realizes detachment of an occlusal portion from an aneurysm clip.

  The present invention includes a pair of sandwiching portions extending from the loop-shaped spring portion and forming an intersecting portion, and a pair of widened by rotating outwardly between the loop-shaped spring portion and the intersecting portion. As the pair of sandwiched portions gradually open in the form of beaks as the squeezing force is applied to the pair of squeezed portions against the spring force of the loop-shaped spring portion, the squeezing force is removed. An aneurysm clip in which a pair of sandwiching portions gradually closes, and an aneurysm clip forceps for holding and setting the aneurysm clip in the body includes a pair of non-crossing opposing levers that can rotate with respect to a common fulcrum shaft Each of the non-crossing opposing levers has a grip portion on one side from the common fulcrum shaft and a jaw portion on the other side from the common fulcrum shaft that receives the looped spring portion in the recess and bites the pressure-receiving portion. A clip bite, a pair of clip bites Having a closing spring means for biasing the part in the closing direction, receiving the looped spring part in the recess, biting the pressed part by the jaw part, and holding the aneurysm clip with a pair of clip holding parts Then, the pair of sandwiching portions are open against the spring force by the biasing force of the closing spring means, and the pair of clip biting portions gradually open as the grip handle portion is narrowed. The sandwiching portion is gradually closed.

  In such aneurysm clip forceps, when the aneurysm clip is bitten and held by the clip holding part, the grip handle part is opened and the clip holding part is opened and the looped spring part of the aneurysm clip is inserted into the recess. When the grip handle portion is loosened afterwards, the clip biting portion is closed only by the urging force of the closing spring means, and the clip biting portion bites and holds the pressed portion. This biting depth is determined by the balance between the urging force of the clip biting part based on the biasing force of the spring means for closing and the spring reaction force of the pressed part, so the clip biting part bites and holds the pressed part. In this state, the pair of sandwiched portions are in an open state, and the open state of the sandwiched portion can be maintained with no gripping force. Therefore, it can be handed over as a clip holder from the surgical assistant to the surgeon. In addition, when an aneurysm clip bitten and held by the clip biting part is extended to a cerebral aneurysm, the aneurysm clip can be held without applying grip force, In optimization, focus on how to grip the grip handle, and then gradually grasp the grip handle to close the aneurysm clip, then clip the aneurysm clip Detachment from the body can be realized, and incompatibility for the set and aneurysm clip can be prevented from falling off.

  The aneurysm clip forceps preferably includes sound generating means that emits a sound when the pair of grip handle parts approach each other when the pair of clip holding parts are opened and the jaw part is detached from the pressed part. After grasping the grip handle part and closing the clamping part, the jaw part is detached from the pressed part and comes off, but if the above-mentioned sound generation means is provided in the grip handle part etc., hold the clip Since it is notified that clipping has been completed by removing the part from the aneurysm clip, careless gripping of the grip handle part, that is, inadvertent opening of the clip biting part can be prevented. In addition, you may provide the stopper which limits the amount of grips of a grip handle part.

  According to the present invention, it is possible to realize the holding of the aneurysm clip at the clip holding portion with no gripping force and the detachment of the clip holding portion from the aneurysm clip following the closure of the pinching portion of the aneurysm clip by gradually increasing the gripping force. .

It is a perspective view which shows the forceps for aneurysm clip concerning one Example of this invention. It is a side view of the forceps for aneurysm clip. It is a side view which shows each operation | movement relationship between the forceps for aneurysm clip and an aneurysm clip. It is an enlarged side view which shows an example of an aneurysm clip. It is a perspective view which shows the forceps for a conventional aneurysm clip. It is a side view which shows each operation | movement relationship between the aneurysm clip forceps and the aneurysm clip shown in FIG.

  Next, embodiments of the present invention will be described with reference to the accompanying drawings.

  The aneurysm clip forceps 20 of this example is a pair of non-cross-opposing (seesaw) type levers that can be rotated with respect to a common fulcrum shaft 25 pivotally supported on the overlapping portions of the bent portions 22a and 24a that are convex inward. (Reiko) 22 and 24 are provided. Each of the non-crossing opposing levers 22 and 24 is a one-handed grip handle portion 22b or 24b on one side from the common fulcrum shaft 25, and the grip grip portions 22b and 24b are end-to-end closing plates. The springs 26 and 28 are always urged to open. Further, the other side from the common fulcrum shaft 25 is a clip having jaw portions 22d and 24d for receiving the looped spring portion 2 of the aneurysm clip 1 shown in FIG. 4 in the recess portions 22c and 24c and biting the pressed portions 5a and 5b. The biting portions 22e and 24e are formed. The closing leaf springs 26 and 28 bias the clip gripping portions 22e and 24e in the closing direction by opening and biasing the grip handle portions 22b and 24b, and the grip handle portions 22b and 24b receive grip force. When not applied, as shown in FIGS. 1 and 2, the clip holding portions 22e and 24e are closed until they come into contact with each other. A sounding leaf spring 22f having a groove Y is attached to the inside of one grip handle portion 22b, and a sounding leaf spring 24f having a convex portion X is attached to the inside of the other grip handle portion 24b. When the grip handle portions 22b and 24b are gripped and approach each other as described later, the convex portion X is pronounced like a cymbal without stopping when the convex portion X falls into the groove portion Y.

  In the usage mode of the aneurysm clip forceps 20, first, when the aneurysm clip 1 is bitten and held by the clip biting portions 22e and 24e, an operation assistant or the like grasps the handle portions 22b and 24b and holds FIG. After the clip holding portions 22e and 24e are largely opened as shown in FIG. 3A, the loop spring portion 2 of the aneurysm clip 1 is inserted into the recesses 22c and 24c as shown in FIG. As shown in FIG. 3D, when the grip handle portions 22b and 24b are loosened, the clip holding portions 22e and 24e are closed only by the urging force of the closing leaf springs 26 and 28, so that the jaw portions 22d and 24d are formed. Bites and holds the pressed parts 5a and 5b. Since the biting depth is determined by the balance between the urging force of the clip holding portions 22e and 24e based on the biasing force of the closing leaf springs 26 and 28 and the spring reaction force of the pressed portions 5a and 5b, the jaw portion 22d. , 24d bites and holds the pressed portions 5a and 5b, the pair of sandwiching portions 4a and 4b are fully opened or close to each other. Therefore, the sandwiching portions 4a and 4b are opened with no gripping force. The state can be sustained.

  For this reason, it can be handed over from the operation assistant to the operator as a clip holder as it is. Further, when the aneurysm clip 1 bitten and held by the clip biting portions 22e and 24e is extended to the cerebral aneurysm, the aneurysm clip 1 can be held without applying a gripping force, and the root of the cerebral aneurysm can be maintained. In optimizing the set direction with respect to the part, the nerves are concentrated on how to grip the grip handle parts 22b and 24b, and then the grip handles 22b and 24b are gradually gripped, whereby the aneurysm clip sandwiching parts 4a and 4b After the closure of the clip, the clip biting portions 22e and 24e can be detached from the aneurysm clip 1, and the incompatibility of the set direction and the drop of the aneurysm clip 1 can be prevented. The failsafe aneurysm clip forceps 20 can be provided.

  Further, in the aneurysm clip forceps 20 of this example, the pair of grip handles 22b and 24b approach each other, the pair of clip holding portions 22e and 24e open, and the jaw portions 22d and 24d extend from the pressed portions 5a and 5b. When the convex portion X rubs against the groove portion Y and falls down, a cymbal sound is generated, so that it can be detected that the clip holding portions 22e and 24e have detached from the aneurysm clip 1, and the grip handle portion 22b. , 24b, that is, the clip biting portions 22e, 24e can be prevented from being opened excessively.

1 ... Aneurysm clip 2 ... Loop spring (torsion spring)
3 ... intersection 4a, 4b ... clamping part (blade)
5a, 5b ... pressured part 6 ... opening bridge 20 ... aneurysm clip forceps 22, 24 ... non-crossing facing levers 22a, 24a ... bent parts 22b, 24b ... grip handle parts 22c, 24c ... concave parts 22d, 24d ... jaws 22e, 24e ... clip jaws 22f, 24f ... sound generating leaf spring 25 ... common fulcrum shafts 26, 28 ... closing leaf spring P ... constriction force X ... convex portion Y ... groove

Claims (2)

A pair of sandwiched portions extending from the loop-shaped spring portion and forming an intersecting portion, and a pair of pressures that are widened by rotating outward from each other between the loop-shaped spring portion and the intersecting portion. The pair of sandwiching portions gradually open in a beak shape as the squeezing force is applied against the spring force of the loop-shaped spring portion to the pair of pressure-receiving portions, and the squeezing force is removed. With regard to the aneurysm clip in which the pair of sandwiched portions gradually closes, the aneurysm clip forceps for holding and setting the clip in the body,
A pair of non-crossing opposing levers that are rotatable with respect to a common fulcrum shaft, each of the non-crossing opposing levers being a one-handed grip handle portion on one side from the common fulcrum shaft and from the common fulcrum shaft A closing spring for biasing the pair of clip holding portions in the closing direction, the other side of which is a clip holding portion having a jaw portion that receives the looped spring portion in the recess and bites the pressed portion In the state in which the loop-shaped spring portion is received in the concave portion, the pressed portion is bitten by the jaw portion, and the aneurysm clip is held by the pair of clip holding portions, The sandwiching portion is in an open state against the spring force by the biasing force of the closing spring means, and as the grip handle portion is narrowed, the pair of clip biting portions gradually open and at the same time The clamp part is gradually closed Aneurysm clip forceps to. The aneurysm clip forceps according to claim 1, wherein when the pair of clip biting portions are opened and the jaw portion is detached from the pressure-receiving portion, a sound is generated when the pair of grip handle portions approach each other. An aneurysm clip forceps comprising means.

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