JP6241834B2 - Suture needle with thread and method for manufacturing suture needle with thread - Google Patents

Description

  The present invention relates to a suture needle with a thread and a method for manufacturing a suture needle with a thread.

  Patent Document 1 discloses a suture needle with a thread composed of a resin suture and a metal suture needle. In this suture needle with a thread, the thread and the needle are joined by inserting the distal end of the suture into a mounting hole formed in the proximal end of the suture needle and caulking the proximal end of the suture needle.

JP 2002-59235 A

  Since the suture needle with a thread is used for suture of living tissue in surgery or the like, it is preferable that the load applied to the living body is as low as possible.

  Therefore, an object of the present invention is to provide a suture needle with a thread that can reduce a load applied to a living body.

Thread with the suture needle according to one aspect of the present invention, a suture needle formed by bioabsorbable material, a suture is integrally formed on the proximal end of the suture needle with is formed by a bio-absorbable material, a with Ru. The distal end portion of the suture needle has a color different from that of the suture needle other than the distal end portion, and is colored in a red color.
Moreover, according to one aspect of the present invention, there is provided a manufacturing method for manufacturing a suture needle with a thread using a mold having a needle-shaped mold groove. A method for manufacturing a suture needle with a thread includes a material placement step of placing a needle-forming material made of a bioabsorbable material in a mold groove, inserting a suture made of a bioabsorbable material into the mold groove, and heating the mold And a thermal processing step of forming a suture needle with a thread integrally formed with the suture by thermally processing the needle forming material and the suture. The needle forming material is configured by bundling a plurality of thread members cut from the suture, or is configured by folding the tip of the suture inserted into the mold groove.

  According to the suture needle with a thread according to one aspect, since the suture needle and the suture thread are formed of the bioabsorbable material, it is possible to reduce the load applied to the living body.

FIG. 1 is a schematic configuration diagram of a suture needle with a thread according to the present embodiment. FIG. 2 is a view for explaining a flow when a living body is sutured using the suture needle with a thread according to the present embodiment. FIG. 3 is a schematic configuration diagram of a mold used for manufacturing a suture needle with a thread. FIG. 4 is a flowchart for explaining each manufacturing process of the suture needle with a thread. FIG. 5 is a schematic diagram for explaining each manufacturing process of the suture needle with a thread. FIG. 6 is a schematic view showing a suture used in an arrangement step when manufacturing a suture needle with a thread. FIG. 7 is a flowchart illustrating each manufacturing process of a suture needle with a thread according to a modification of the present embodiment. FIG. 8 is a schematic configuration diagram of a suture needle with a thread according to a modification.

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

  FIG. 1 is a schematic configuration diagram of a suture needle with a thread according to the present embodiment.

  A suture needle 100 with a thread shown in FIG. 1 is a surgical suture needle used when a biological tissue such as a human being or an animal is sutured. The suture needle with a thread 100 includes a suture needle 10 and a suture thread 20, and the suture needle 10 and the suture thread 20 are integrally formed.

  The suture needle 10 has an outer shape curved in a substantially semicircular shape, a distal end portion 11 including a needle tip, a proximal end portion 12 including a suture 20, and a main body portion that connects the distal end portion 11 and the proximal end portion 12. 13. There are no particular limitations on the cross-sectional shapes of the distal end portion 11, the main body portion 13, and the proximal end portion 12, and a polygonal shape such as a circular shape or a triangle can be applied. Further, the cross-sectional shape of the suture needle 10 may be configured to change along the longitudinal direction of the suture needle 10.

  The distal end portion 11 is a portion including a needle tip that is first inserted into the living body 30 (see FIG. 2) in the suturing needle 10, and has a tapered shape whose diameter decreases toward the needle tip. The main body 13 also has a tapered shape whose diameter decreases from the middle in the longitudinal direction toward the distal end 11 side. The proximal end portion 12 is a portion constituting the root portion of the suture needle 10, and a suture thread 20 is integrally formed with the proximal end portion 12.

  In the present embodiment, the suture needle 10 and the suture thread 20 are made of a polymer material that is decomposed and absorbed in a living body, a so-called bioabsorbable material. Examples of bioabsorbable materials include polyglycolic acid (PGA), polylactic acid (PLA), polyglactin (PGLA), polydioxanone (PDO), polyglactin, polyglycomer, polyglyconate, polycaprolactone, etc. The suture needle 10 and the suture thread 20 are formed of the bioabsorbable material. The suture needle 10 and the suture thread 20 may be formed of different types of bioabsorbable materials, but are preferably formed of the same type of bioabsorbable material from the viewpoint of manufacturing efficiency and the like. When different types of bioabsorbable materials are used for the needle and thread, a material according to the characteristics required for the needle and thread can be selected, and a highly functional suture needle with thread can be provided.

  In the suture needle with thread 100 of the present embodiment, the suture needle 10 and the suture thread 20 are integrally (continuously) formed by thermal processing. That is, the suture needle with thread 100 is formed by integrally integrating the suture needle 10 and the suture thread 20 that are formed of the same or different types of bioabsorbable materials, and is made of a metal suture needle and a resin. This is different from the one in which the suture thread is mechanically connected to the other and the one in which the suture thread and the suture needle are joined by an adhesive or the like.

  Next, a suturing operation using the suture needle with thread 100 will be described with reference to FIGS.

  As shown in FIG. 2A, the suture needle 10 of the suture needle with thread 100 is operated in a state where the main body portion 13 is held by the scissor-like needle holder 40. At the time of surgery or the like, the needle tip of the suture needle 10 is brought into contact with the suture site of the living body 30 at a predetermined angle, and the distal end portion 11 of the suture needle 10 is inserted into the living body 30 using the needle holder 40.

  As shown in FIG. 2B, when the piercing operation of the suture needle 10 is further advanced, the main body portion 13 of the suture needle 10 is exposed from the living body 30. The suture thread 20 is inserted into the living body 30 by gripping the exposed body portion 13 of the suturing needle 10 with the needle holder 40 and pulling out the suturing needle 10 from the living body 30. 2A and 2B are repeatedly performed, the sutured portion of the living body 30 is sutured by the suture thread 20.

  As described above, when pulling out the suturing needle 10, the main body 13 having a high rigidity of the suturing needle 10 is held by the needle holder 40. Although it is possible to grasp the distal end portion 11 of the suturing needle 10 with the needle holder 40 and pull out the suturing needle 10, the distal end portion 11 is a portion that is formed very thin. When 11 is gripped more strongly than necessary, there is a concern that a part of the tip 11 is lost.

  However, in the suture needle with thread 100, the suture needle 10 and the suture thread 20 are formed of a bioabsorbable material. It will be decomposed and absorbed by the living tissue without remaining in the living body. Therefore, if the suture needle 100 according to the present embodiment with a thread is used in surgery or the like, the load on the living body can be reduced.

  Next, with reference to FIGS. 3-5, the manufacturing method of the suture needle 100 with a thread | yarn by this embodiment is demonstrated.

  FIG. 3 is a schematic configuration diagram of a mold 50 used for manufacturing the suture needle 100 with a thread.

  As shown in FIG. 3, the mold 50 includes an upper mold 51 and a lower mold 52 disposed below the upper mold 51. The upper mold 51 and the lower mold 52 are configured as metal molds. However, the upper mold 51 and the lower mold 52 may be configured of a material other than metal as long as the resin material can be thermally processed. Further, the mold 50 is configured by two molds, that is, an upper mold 51 and a lower mold 52, but may be configured by three or more molds.

  The upper mold 51 and the lower mold 52 have a needle-shaped mold groove 51A and a mold groove 52A, respectively. The mold groove 51 </ b> A is a groove formed to be recessed on the lower surface of the upper mold 51, and the mold groove 52 </ b> A is a groove formed to be recessed on the upper surface of the lower mold 52. By overlapping the upper mold 51 and the lower mold 52, the mold grooves 51A and 52A function as molds for molding the suture needle 10.

  With reference to FIG.4 and FIG.5, the flow of the manufacturing method of the suture needle | hook 100 with a thread | yarn using the metal mold | die 50 is demonstrated. FIG. 4 is a flowchart for explaining each manufacturing process of the suture needle 100 with a thread. FIG. 5 is a schematic diagram for explaining each manufacturing process of the suture needle 100 with a thread.

  As shown in FIG. 4, in step S <b> 101 (material placement step), a material for forming the suture needle 100 with a thread is set on the mold 50.

  That is, as shown in FIG. 5A, the needle forming material 20 ′ made of a bioabsorbable material is disposed on the mold groove 52 </ b> A of the lower mold 52. The needle forming material 20 ′ is a material using a suture 20 that is a bioabsorbable material, and is a material configured by bundling a plurality of thread members obtained by cutting the suture 20 into a predetermined length. The number of the thread members constituting the needle forming material 20 ′ is adjusted according to the volume necessary for forming the suture needle 10. The needle forming material 20 ′ and the suture 20 need not be formed of the same material, and the bioabsorbable material forming the needle forming material 20 ′ is a different type of living body from the bioabsorbable material forming the suture 20. It is good also as an absorptive material.

  As shown in FIG. 5B, after the needle forming material 20 ′ is placed in the lower mold 52, the suture 20 is inserted into the mold groove 52 </ b> A.

  As described above, the needle forming material 20 ′ and the suture thread 20 are arranged in the mold groove 52 </ b> A of the lower mold 52, thereby completing Step S <b> 101 (material arranging step). In step S101, the suture 20 is disposed after the needle forming material 20 ′ is disposed. However, the needle forming material 20 ′ may be disposed after the suture 20 is disposed, or both members may be disposed simultaneously. .

  After the process of step S101, the thermal processing step of step S102 shown in FIG. 4 is performed. In S102, the upper mold 51 and the lower mold 52 are heated to a predetermined temperature, and the upper mold 51 is overlaid on the lower mold 52, whereby the needle forming material 20 'and the suture thread 20 are heated and pressurized. As shown in FIG. 5C, the suture needle 10 is integrally formed at the distal end of the suture 20 by performing thermal processing on the needle forming material 20 ′ and the suture 20.

  The predetermined temperature of the upper mold 51 and the lower mold 52 at the time of heat processing is a set value determined by a prior experiment or the like, for example, set to a temperature near the melting point of the bioabsorbable material constituting the suture 20. The In step S102, the upper mold 51 and the lower mold 52 are heated after the execution of step S101. However, the upper mold 51 and the lower mold 52 may be heated before the execution of step S102. Good.

  After execution of step S102, the extraction step of step S103 shown in FIG. 4 is executed. In step S <b> 103, the upper mold 51 and the lower mold 52 are disconnected from each other, and the threaded suture needle 100 after heat processing is taken out from the mold 50.

  Thereafter, in step S104 (polishing step), the suture needle 10 of the suture needle with thread 100 after thermal processing is polished. In this step, the burr in the suture needle 10 is removed and the suture needle 10 is adjusted to a desired shape.

  As described above, the manufacturing method of the suture needle with thread 100 according to the present embodiment is a manufacturing method for manufacturing the suture needle with thread 100 using the mold 50 having the needle-shaped mold grooves 51A and 52A. In this manufacturing method, the needle forming material 20 ′ made of a bioabsorbable material is placed in the mold groove 52A, and the material placement step of inserting the suture thread 20 made of the bioabsorbable material into the mold groove 52A (step of FIG. 4). S101) and a thermal processing step of forming the suture needle with thread 100 by heating the upper mold 51 and the lower mold 52 to thermally process the needle forming material 20 ′ and the suture 20 (step S102 in FIG. 4). And.

  According to this manufacturing method, as shown in FIG. 1, a suture needle 10 formed of a bioabsorbable material and a suture formed of a bioabsorbable material and integrally formed on the proximal end portion 12 of the suture needle 10. A suture needle 100 with a thread including the thread 20 can be manufactured. Since the suture needle 10 and the suture thread 20 of the suture needle with thread 100 are formed of a bioabsorbable material, even if the distal end portion 11 or the like of the suture needle 10 is lost at the time of suturing, the missing portion is a living tissue. Therefore, the load applied to the living body can be reduced.

  The manufacturing method of the suture needle with thread 100 according to the present embodiment forms the suture needle with thread 100 by thermally processing the needle forming material 20 ′ and the suture thread 20, and a bioabsorbable material by a relatively simple method. The suture needle 100 with a thread can be manufactured.

  The needle forming material 20 ′ is a material formed by bundling a plurality of thread members cut from the suture thread 20 that is already formed as a thread. In the manufacturing method of the present embodiment, the needle forming material 20 ′ can utilize the suture 20 as it is, so that the manufacturing process is simplified. Since it is not necessary to prepare a material other than the suture thread 20, the manufacturing cost can be reduced.

  Next, with reference to FIG. 6, the modification of the manufacturing method of the suture needle 100 with a thread | yarn by this embodiment is demonstrated.

  In Step S101 of FIG. 4, the needle forming material 20 'and the suture 20 are configured as separate members, but the needle forming material 20' and the suture 20 may be configured as one member. That is, as shown in FIG. 6, the distal end portion of the suture thread 20 becomes the needle forming material 20 '. In this case, the needle forming material 20 ′ is configured by folding the tip of the suture 20 inserted into the mold groove 52 </ b> A of the lower mold 52. The folding length and the number of foldings at the distal end of the suture thread 20 are adjusted according to the volume necessary for forming the suture needle 10.

  After the suture 20 in the state shown in FIG. 6 is placed on the mold groove 52A of the lower mold 52, the suture needle 100 with a thread shown in FIG. 1 is also obtained by executing steps S102 to S104 in FIG. Can be manufactured.

  In the manufacturing method of the suture needle with thread 100 according to the present modified example, the needle forming material 20 ′ is formed by folding the tip of the suture 20, so that the suture forming material 20 ′ is cut to form the needle forming material 20 ′. However, it is possible to reduce the burden during material preparation and to simplify the manufacturing man-hours.

  With reference to FIG. 7, another modification of the method for manufacturing the suture needle 100 with a thread according to the present embodiment will be described.

  As shown in FIG. 7, the manufacturing method of the suture needle 100 with a thread according to the modified example has the same steps (S101 to S104) as the manufacturing method of FIG. 4, and step S105 (coloring step) after the processing of step S104. ).

  In step S105, the distal end portion 11 of the suture needle 10 constituting the suture needle 100 with thread is colored. For example, a pigment or dye that is harmless to the human body is applied to the distal end portion 11 of the suture needle 10. As a result, as shown in FIG. 8, the distal end portion 11 of the suture needle 10 is colored in a different color from the other portions.

  As described above, the distal end portion 11 of the suture needle 10 is colored in a different color from the other portions, so that the distal end portion 11 and the other portions can be easily identified. Accordingly, it is possible to prompt a doctor who performs an operation or the like, avoid the grasping of the distal end portion 11 of the suture needle 10 by the needle holder 40, and reduce the burden on the distal end portion 11.

  In particular, in the suture needle with thread 100, it is preferable that the distal end portion 11 of the suture needle 10 is colored red. During the operation, the blood of the patient becomes dominant due to the blood of the patient adhering to the suture position. Therefore, by coloring the tip portion 11 in red, the tip portion 11 can be made inconspicuous, and the tip portion 11 can be made difficult to grip.

  Note that the distal end portion 11 of the suture needle 10 is not limited to red, and may be colored with a red color such as purple or pink, or green. In FIG. 7, step S105 (coloring step) is performed after step S104 (polishing step), but may be performed after step S103 (extraction step). In this case, the polishing step is performed after the coloring step.

  The embodiment of the present invention has been described above. However, the above embodiment only shows a part of application examples of the present invention, and the technical scope of the present invention is limited to the specific configuration of the above embodiment. Absent.

  In the present embodiment, the suture needle 10 constituting the suture needle with thread 100 has a substantially semicircular shape, but may have a linear shape.

  Furthermore, in this embodiment, the mold 50 is used in a horizontally placed state, and is arranged so that the suture thread 20 extends in the horizontal direction in the thermal processing step. It is not limited. For example, the mold 50 may be used in a vertically placed state, and the suture thread 20 may be disposed so as to extend in the vertical direction in the thermal processing step. In this case, the mold 50 is composed of a left mold and a right mold.

DESCRIPTION OF SYMBOLS 100 Suture needle with thread 10 Suture needle 11 Tip part 12 Air end part 13 Body part 20 Suture thread 50 Mold 51 Upper mold 51A Mold groove 52 Lower mold 52A Mold groove

Claims (7)

A suture needle formed of a bioabsorbable material;
A suture formed of a bioabsorbable material and formed integrally with the proximal end of the suture needle ,
The distal end portion of the suture needle is a color different from the portion other than the distal end portion of the suture needle, and is colored in a red color.
Suture needle with thread. The suture needle with a thread according to claim 1,
The bioabsorbable material is any of polyglycolic acid, polylactic acid, polyglactin, polydioxanone, polyglactin, polyglycomer, polyglyconate, polycaprolactone,
A suture needle with a thread characterized by that. A suture needle with a thread according to claim 1 or 2,
The bioabsorbable material forming the suture needle is a different type of bioabsorbable material from the bioabsorbable material forming the suture.
A suture needle with a thread characterized by that. A manufacturing method for manufacturing a suture needle with a thread using a mold having a needle-shaped groove,
A material placement step of placing a needle-forming material made of a bioabsorbable material in the mold groove and inserting a suture made of the bioabsorbable material into the mold groove,
By hot working the needle forming material and the suture by heating the mold, seen containing a thermal processing step, the said suture to form a yarn with needles which are integrally formed,
The needle forming material is configured by bundling a plurality of thread members cut from the suture,
Manufacturing method of suture needle with thread. A manufacturing method for manufacturing a suture needle with a thread using a mold having a needle-shaped groove,
A material placement step of placing a needle-forming material made of a bioabsorbable material in the mold groove and inserting a suture made of the bioabsorbable material into the mold groove,
By hot working the needle forming material and the suture by heating the mold, seen containing a thermal processing step, the said suture to form a yarn with needles which are integrally formed,
The needle forming material is configured by folding the tip of the suture thread inserted into the mold groove,
Manufacturing method of suture needle with thread. A method for producing a suture needle with a thread according to claim 4 or 5 ,
The bioabsorbable material is any of polyglycolic acid, polylactic acid, polyglactin, polydioxanone, polyglactin, polyglycomer, polyglyconate, polycaprolactone,
A method of manufacturing a suture needle with a thread characterized by the above. It is a manufacturing method of the suture needle with a thread according to any one of claims 4 to 6 ,
After the thermal processing step, further comprising a coloring step of coloring the tip of the suture needle with thread,
A method of manufacturing a suture needle with a thread characterized by the above.

Images