JPH0624532B2 - Surgical tools - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention is applied to surgical resection of parenchymal organs with particularly severe bleeding, and a novel surgical tool capable of expecting a favorable prognosis by leaving the affected part fixed as it is. Is provided.

(Prior Art) Conventionally, for example, in a resection operation of a parenchymal organ such as liver cancer, there is a large amount of bleeding, and in particular, ligation of blood vessels in the parenchymal organ is often accompanied by difficulty and bleeding is inevitable, and a large amount of blood transfusion is required. did. In addition, the time required for the operation also took a long time for hemostasis.

Furthermore, in the treatment of parenchymal organs, primary tumors and metastatic tumors to parenchymal organs, surgical excision is generally performed as described above.

(Problems to be Solved by the Invention) The present invention is applied to such an operation, is excellent in hemostasis and ischemia, and its operation is simple and enables operation in a short time. The present invention provides a new surgical tool which does not require removal of the used tool from the body.

(Surgery to solve the problem) However, the feature is that it consists of a thin plate of bioabsorbable polymer, and multiple independent through holes are provided on both sides in the long side direction and in the center part, and its end part The present invention relates to a surgical instrument characterized in that a concave groove and a convex portion on the opposite surface facing the concave groove are provided, and a needle-like projection is further provided on one surface side of the thin plate.

(Operation) The present invention has such a configuration, and nips the affected part or a tissue around the affected part with a grasping tool made of a bioabsorbable polymer material, and strongly fix the same to promote hemostasis and ischemia. Since the constitution is made possible, bleeding is scarcely observed even if the affected part is excised in such a state, and even if it is left as it is without being excised, it has the effect of preventing the growth of malignant tissue in the affected part.

(Example) Hereinafter, the detail of this invention is demonstrated based on the illustrated drawing.

FIG. 1 exemplifies a structure of a jig (a holder (A)) applied to the surgical instrument of the present invention. The structure is a thin plate for gripping facing the tip of a conventionally known forceps (1). The body (2) (2 ') is provided. This structure will be described in more detail with reference to FIG. 2. The thin plate body is made of a metal plate such as stainless steel, and has a curved inner curve.
Notches (3) along the curve on both edges,
(4) is provided with a U-shaped projection (5) for locking at one end on the inside thereof, and a notch (6) at the other end opposite thereto, at the middle portion of the notch groove. Has a through hole (7). Incidentally, FIG. 3 shows a sectional view taken along line aa of FIG.

On the other hand, FIG. 4 shows the surgical instrument of the present invention made of a bioabsorbable polymer.

Such a structure is formed by molding a thin plate of approximately the same shape with a heat of several millimeters so as to fit the thin plate body formed at the tip of the forceps. As a material for this, a polymer that is decomposed and absorbed in a living body and is moldable, in particular, a homopolymer or a copolymer of glycolic acid, lactic acid, p-dioxanone, caprolactone or the like can be preferably used. Molded,
A plurality of through holes (8) at appropriate intervals on both sides in the long side direction.
(9) are continuously provided, and a plurality of through holes (10) are also provided in the central portion thereof. The end portion is provided with a concave groove (11), a convex portion (12) on the opposite surface facing the concave groove (11), and a needle-like protrusion (13) on one side.

In this structure, the row of through holes (8) is in the cutout groove (3) of the holder (A), and the row of through holes (9) is in the cutout groove (4).
In addition, the through hole (10) provided in the center is the through hole (7),
Further, the concave groove (11) at the end portion and the convex portion (12) provided on the opposite surface facing the concave groove (11) are configured so as to correspond to and match the U-shaped projections (5) and the notches (6), respectively. Has been done.

Incidentally, FIG. 5 shows a sectional view taken along the line bb in FIG.

Next, the method of applying such a surgical instrument will be described. As shown in the cross-sectional view of FIG. 6, the holder (A) and the instrument of the present invention (B) are overlaid, and the tool () is attached to the projection (5) of the holder (A). The concave groove (11) of B) is provided with the convex portion (12) in the notch (6).
Fit and hold temporarily.

This state is as shown in FIGS. 7 and 8, and a pair of tools (B) held opposite to the holder (A) is applied to the affected part or the tissue around the affected part, and pressure is applied to the grip of the grasped holder. The needle-shaped protrusion (13) is inserted into the human body tissue by adding, and then the screw (14) is inserted into the through hole (10) to firmly fix it. In this example, the plate through hole (10 ') on one side is threaded, but it may be tightened with a nut.

Next, the suture thread (15) is inserted through the through holes (8), (8 '), (9) and (9') of the corresponding tools and sewn to oppose the pair of tools (B) and (B). And fix it. At this time, if the diameters of the through holes (8) and the corresponding through holes (8 ') are changed at regular intervals as in the example shown in the figure, the interval, position, etc. of the sutures can be clearly understood and convenient.

After fixing the pair of tools in this way, the affected part is removed from the holder (A) by the reverse operation to the case where the affected part is excised or left as it is, and left as it is in the body.

It is desirable that the suture thread, the screw, and the like used for this are all made of the bioabsorbable polymer of the same material as the tool (B).

Further, the shape of the tool (B) is arbitrary, but a tool having a curved line as shown in the drawing is preferable because a peripheral edge of an affected area can be wrapped in a circle when a plurality of the tools are arranged and applied. Further, the thickness, size, material and the like can be arbitrarily configured in consideration of the application place, required absorption period length, holding property, and workability. It is also possible to knead an anti-cancer agent, an anti-inflammatory agent, etc. in such a material.

It should be noted that FIG. 9 shows another configuration example of the holder portion exemplified above, and shows a configuration in which a long notch (16) is provided in the center to facilitate removal of the tool.

(Effects of the Invention) In the present invention having the above-described configuration, conventionally, for example, there is a large amount of bleeding in the operation of excising a solid organ such as liver cancer, and an operation that requires a large amount of blood transfusion is grasped by the device of the present invention,
By fixing, there is an advantage that the amount of bleeding is small and the time is short.

In addition, since it uses a biodegradable and absorbable material, it does not need to be removed by re-operation and can be left as it is until healing. After a certain period of time, it will be absorbed into the body and will not leave any trouble.

Furthermore, since it is a plastic material in post-operative CT examinations, etc., it has excellent effects such as no obstacles in examination.

[Brief description of drawings]

FIG. 1 is a perspective view illustrating a forceps for holding a tool of the present invention. FIG. 2 is an enlarged view of the holder part. FIG. 3 is a sectional view taken along the line aa in FIG. FIG. 4 is a perspective view of the surgical instrument of the present invention. FIG. 5 is a sectional view taken along line 4b-b. FIG. 6 is a cross-sectional view showing the usage state thereof. FIG. 7 is a perspective view showing an application method. FIG. 8 is a sectional view of this. FIG. 9 is a perspective view showing another configuration example of the holder portion. (A) ... Holder, (B) ... Surgical tool (1) ... Forceps, (2) (2) ... Thin plate (3) (4) ... Notch groove (7) (8) (9) (10) ... through hole (14) ... screw, (15) ... suture

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Gen Ran, 24-8 Tenno, Ogura-machi, Uji-shi, Kyoto Osamu Kawabata, Examiner

Claims (1)

[Claims] 1. A thin plate of bioabsorbable polymer, which is provided with a plurality of independent through holes on both sides in the long side direction and in the central portion, and has a groove at the end and an opposite surface facing the groove. A surgical instrument characterized in that a convex portion is further provided, and a needle-like projection is provided on one side of the thin plate.