CN114273565A - Stamping die and needle-adding and wire-clamping method of metal flat wire - Google Patents
Stamping die and needle-adding and wire-clamping method of metal flat wire Download PDFInfo
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- CN114273565A CN114273565A CN202011040888.3A CN202011040888A CN114273565A CN 114273565 A CN114273565 A CN 114273565A CN 202011040888 A CN202011040888 A CN 202011040888A CN 114273565 A CN114273565 A CN 114273565A
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Abstract
The invention provides a stamping die, which comprises a stamping mechanism and a power mechanism for providing stamping force for the stamping mechanism, wherein the stamping mechanism comprises a first stamping block, a second stamping block, a third stamping block and a fourth stamping block which are sequentially and adjacently arranged, a rectangular forming hole is formed among the first stamping block, the second stamping block, the third stamping block and the fourth stamping block, the third stamping block is fixed in a first direction and cannot move along the first direction and the second direction, the fourth stamping block is fixed in the second direction and cannot move along the second direction, the first stamping block can move along the first direction to enable the rectangular forming hole to shrink along the first direction, and the second stamping block can move along the second direction to enable the rectangular forming hole to shrink along the second direction. The stamping die and the method for adding the needles and clamping the metal flat wires have good wire pressing effect.
Description
Technical Field
The invention belongs to the technical field of medicine, and particularly relates to a stamping die and a method for adding needles and clamping wires of a metal flat wire.
Background
Cardiac surgery is often performed with a needled metal round wire cerclage fixation to close the median sternal incision. According to the pressure principle, if the median incision of the sternum is closed by using the flat metal wire instead of the round metal wire, the pressure-bearing area between the cerclage and the surface of the sternum can be effectively increased, the pressure is reduced, and the pressure-bearing capacity of the loose sternum is improved, so that the risk of the cerclage for cutting the sternum is reduced, and the incidence rate of postoperative complications is reduced. The clinical metal round wire with the needle is prepared by adding a needle and clamping a wire into a medical suture needle and then sterilizing the medical suture needle and the metal round wire. One end of a metal round wire with a needle needs to be inserted into a tail blind hole of a medical suture needle in advance in the production process of the metal round wire product with the needle, then a special arc-shaped stamping die or a single-contact stamping die is used for stamping the outer wall of the blind hole to reduce the deformation aperture of the hole wall or locally deform inwards to clamp the metal round wire, and the purpose that the metal round wire cannot slip from the hole in the surgical suture is achieved.
At present, the research on the stainless steel flat wire with the needle is carried out, because a larger gap is left between two sides of the plane of the stainless steel flat wire inserted into the blind hole and the inner wall of the needle hole to form a virtual position, and a gap between the two side cambered surfaces of the plane of the flat wire and the inner wall of the needle hole to form a real position is very small, when the traditional arc-shaped or single-contact stamping die is used for carrying out needle adding and wire clamping, even if the projection angle between the needle point and the plane of the flat wire has a very tiny deviation, the axial rotation of the flat wire is very easy to be caused by the principle that the flat wire is squeezed by the hole wall to reduce potential energy, the vertical relation between the projection of the needle point and the flat surface of the suture is changed to form an acute angle, the product quality of the stainless steel flat wire with the needle is seriously influenced by the reduction of the included angle, and the stress area of the flat wire passing through suture tissue is easily reduced to increase the risk of fracture and injury during the surgical suture.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a stamping die with a better needle-adding and wire-clamping effect and a metal flat wire needle-adding and wire-clamping method.
The invention provides a stamping die, which comprises a stamping mechanism and a power mechanism for providing stamping force for the stamping mechanism, the stamping mechanism comprises a first stamping block, a second stamping block, a third stamping block and a fourth stamping block which are sequentially and adjacently arranged, a rectangular forming hole is enclosed among the first punching block, the second punching block, the third punching block and the fourth punching block, the third punching block is fixed in the first direction so as not to move along the first direction, the fourth punching block is fixed in the second direction so as not to move along the second direction, the first punching block and the third punching block are arranged oppositely and can move along the first direction to enable the rectangular forming hole to shrink along the first direction, the second stamping block and the fourth stamping block are arranged oppositely and can move along the second direction, so that the rectangular forming hole shrinks along the second direction.
Preferably, the first press block and the second press block are abutted against each other along a second direction, and the power mechanism is connected with the first press block and the second press block and simultaneously drives the first press block to press the third press block along the first direction and drives the second press block to press the fourth press block along the second direction.
Preferably, the first direction and the second direction are perpendicular to each other, and the power mechanism provides a punching force to the punching mechanism in a third direction different from the first direction and the second direction, the third direction being between the first direction and the second direction.
Preferably, the power mechanism applies a total punching force in the third direction, and the total punching force is decomposed into a first punching force in the first direction and a second punching force in the second direction.
Preferably, the first stamping block and the fourth stamping block abut against each other along a first direction, the first stamping block can also move along a second direction, and when the power mechanism applies stamping force to the stamping mechanism, the first stamping block moves along the first direction and the second direction and drives the fourth stamping block to move along the first direction.
Preferably, the fourth stamping block is provided with a first elastic mechanism at the bottom in the first direction, the first stamping block is provided with a second elastic mechanism at the top in the first direction, both the first elastic mechanism and the second elastic mechanism can be compressed in the first direction, and the fourth stamping block is provided with a first fixing seat at the outer side in the second direction, so that the fourth stamping block cannot move in the second direction.
Preferably, the third and fourth press blocks abut against each other in a second direction, the second and third press blocks abut against each other in the first direction, and the first and second press blocks abut against each other in the second direction.
Preferably, the third punch block is fixed in the first direction and the second direction so as not to move in the first direction and the second direction, and a third elastic mechanism is arranged at the top of the second punch block in the first direction and can be compressed in the first direction.
The invention also provides a method for adding needles and clamping the flat metal wire, which comprises the following steps:
providing the stamping die;
providing a metal flat wire and a suture needle, wherein the metal flat wire is provided with a connecting part before stamping, two flat planes are arranged on the connecting part before stamping, the two flat planes are oppositely arranged, the suture needle comprises a needle point part, a needle body and a mounting part before stamping, the metal flat wire and the suture needle are both extended into the rectangular forming hole, the connecting part before stamping of the metal flat wire is mounted in the mounting part before stamping of the suture needle, and the two flat planes of the connecting part before stamping of the metal flat wire are respectively oppositely arranged with the first stamping block and the third stamping block;
applying a stamping force to the mounted mounting part to finish the first forming;
and rotating the mounting part in the rectangular forming hole by 90 degrees, and applying the stamping force again to finish secondary forming.
Preferably, in the step (2), when the flat metal wire and the suture needle are inserted into the rectangular forming hole, the needle tip part and the needle body are positioned outside the rectangular forming hole; the tail end of the connecting part is positioned outside the rectangular forming hole and away from the other side of the needle tip part and the needle body.
The stamping die and the needle-adding and wire-clamping method for the metal flat wire have good needle-adding and wire-clamping effects, and defective products are effectively prevented.
Drawings
The foregoing and other objects, features and advantages of the invention will be apparent from the following more particular description of preferred embodiments of the invention, as illustrated in the accompanying drawings. Like reference numerals refer to like parts throughout the drawings, and the drawings are not intended to be drawn to scale in actual dimensions, emphasis instead being placed upon illustrating the principles of the invention.
Fig. 1 is a schematic structural diagram of a stamping die according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a stress analysis of a stamping die according to an embodiment of the present invention;
FIG. 3 is a schematic view showing the positional relationship between the flat metal wire and the stamping die when the needle is clamped according to the embodiment of the present invention;
FIG. 4 is a schematic structural view of the flat metal suture needle and the mold after the second forming;
FIG. 5 is a schematic view of a surgical stapling apparatus according to an embodiment of the present invention;
FIG. 6 is an enlarged view of part A of FIG. 5;
FIG. 7 is a front view of a surgical stapling apparatus according to an embodiment of the present invention;
FIG. 8 is an enlarged view of the portion B of FIG. 7;
FIG. 9 is a schematic flow chart illustrating a method for clamping a flat metal suture needle according to the present embodiment.
Detailed Description
The technical solutions of the present invention are further described in detail with reference to specific examples so that those skilled in the art can better understand the present invention and can implement the present invention, but the examples are not intended to limit the present invention.
Referring to fig. 1 to 3, an embodiment of the present invention provides a stamping die, in this embodiment, the stamping die is mainly used for a needle adding and clamping wire of a flat metal wire 9 and a suture needle 8, the flat metal wire 9 in this embodiment has a stamping front connecting portion 93, two flat planes are arranged on the stamping front connecting portion 93, the two flat planes are arranged oppositely, two sides of the two flat planes are connected through two arc surfaces, respectively, and the suture needle 8 includes a needle tip portion 81, a needle body 82, and a stamping front mounting portion 84.
The stamping die of the embodiment comprises a stamping mechanism and a power mechanism for providing stamping force for the stamping mechanism. Stamping mechanism is including the first punching press piece 1 that adjacent setting in proper order, second punching press piece 2, third punching press piece 3 and fourth punching press piece 4, first punching press piece 1, second punching press piece 2, be formed with rectangle shaping hole 5 between third punching press piece 3 and the fourth punching press piece 4, third punching press piece 3 is fixed in on the first direction a, make it can not remove along first direction, fourth punching press piece 4 is fixed in on the second direction b, make it can not remove along second direction b, first punching press piece 1 sets up and can remove along first direction a with third punching press piece 3 relatively, make rectangle shaping hole 5 shrink along first direction a, second punching press piece 2 sets up and can remove along second direction b with fourth punching press piece 4 relatively, make rectangle shaping hole 5 shrink along second direction b. The first direction a and the second direction b are not the same direction in this embodiment. In the embodiment, the third side 53 and the fourth side 54 of the hole 5 are formed by the fixed moment, so that the suture needle 8 and the flat metal wire 9 can be better limited in the rectangular forming hole 5 when the needle is added and the wire is clamped, and then the suture needle 8 is not easy to displace in the needle adding and wire clamping process of the flat metal wire 9 and the suture needle 8 through the contraction of the first side 51 and the second side 52 of the rectangular forming hole 5, and the flat metal wire 9 can be better pressed on the inner wall of the needle hole.
Referring to fig. 1 and 2, in a preferred embodiment, the first punch block 1 and the second punch block 2 abut each other in the second direction b, and the power mechanism is connected to the first punch block 1 and the second punch block 2 and simultaneously drives the first punch block 1 to punch in the first direction a toward the third punch block 3 and the second punch block 2 to punch in the second direction b toward the fourth punch block 4.
Referring to fig. 1 and 2, in a preferred embodiment, the first direction a and the second direction b are perpendicular to each other, and the power mechanism provides a punching force to the punching mechanism in a third direction different from the first direction a and the second direction b, the third direction c being between the first direction and the second direction.
Referring to fig. 1 and 2, in a preferred embodiment, the power mechanism applies a total punching force in the third direction c, which is decomposed into a first punching force in the first direction a and a second punching force in the second direction b.
Referring to fig. 1 and 2, in a further preferred embodiment, the power mechanism is arranged in the rectangular forming hole 5, the first direction a is perpendicular to the second direction b, the third direction c is a direction extending from a first included angle of the rectangular forming hole to a diagonal direction of the rectangular forming hole, and the first included angle is an included angle formed by the first punching block 1 and the second punching block 2. In this embodiment, the third direction c of the power mechanism provides a punching force for the punching mechanism to drive the first punching block 1 to move along the first direction a, and the second punching block 2 moves along the second direction b, so as to better realize that the flat metal wire 9 and the suture needle 8 are not easy to displace during the process of adding and clamping the needle by matching with the limiting fixation of the third side 53 and the fourth side 54 of the rectangular forming hole 5.
Referring to fig. 1 and 2, in a preferred embodiment, the first punch block 1 and the fourth punch block 4 abut against each other in the first direction a, the first punch block 1 is also movable in the second direction b, and when the power mechanism applies a punching force to the punching mechanism, the first punch block 1 is moved in the first direction a and the second direction b and drives the fourth punch block 4 to move in the first direction a. The rectangular molding hole 5 is contracted to clamp and fix the attachment portion 83 of the sewing needle 8 to the connection portion 91 of the flat metal wire 9.
Referring to fig. 1 and 2, in a preferred embodiment, the third press block 3 is fixed in the first direction a and the second direction b so as not to move in the first direction a and the second direction b, the bottom of the fourth press block 4 in the first direction a is provided with a first elastic mechanism 61, the top of the first press block 1 in the first direction a is provided with a second elastic mechanism 62, both the first elastic mechanism 61 and the second elastic mechanism 62 can be compressed in the first direction a, and the outer side of the fourth press block 4 in the second direction b, that is, the left side 41 of the fourth press block is provided with a first fixing seat 71.
Referring to fig. 1 and 2, in a preferred embodiment, the top 23 of the second punch block in the first direction a is provided with a third resilient mechanism 63, the third resilient mechanism 63 being compressible in the first direction a.
When a needle is added and a thread is clamped, firstly, a stamping front installation part 84 of a sewing needle 8 extends into a rectangular forming hole 5, a stamping front connection part 93 of a flat metal wire 9 is installed in a blind hole of the stamping front installation part 84 of the sewing needle 8, two flat planes of the flat metal wire 9 face to a first stamping block 1 and a third stamping block 3, the projection of the needle point of a needle point part (81) is perpendicular to the flat planes, a stamping die is opened, a power mechanism provides stamping force for the stamping mechanism along a third direction c, the stamping mechanism moves along the direction c, a second elastic mechanism 62 compresses and presses against the first stamping block 1 to move along a first direction a and a second direction b, in the process that the first stamping block 1 moves along the first direction a, a fourth stamping block 4 is pushed to move towards the first direction a and compresses a first elastic mechanism 61, the reduction of the rectangular forming hole 5 in the direction a is realized, and after the stamping installation part is stamped, a hole wall 83 of the sewing needle 8 is partially contacted with the first stamping block 1 and the third stamping block 3 and attached to the rectangular forming hole The third elastic mechanism 63 compresses and supports the second punching block 2 to move along the second direction b, so that the rectangular forming hole 5 is reduced in the second direction b, and the connecting part of the installation part 83 of the sewing needle 8, the second punching block 2 and the fourth punching block 4 is pressed on two arc-shaped connecting surfaces of the flat metal wire 9 in a fit manner, so that the connecting part 91 of the flat metal wire 9 is held tightly by the inner wall of the needle hole. When the external stamping force is relieved, the stamping mechanism resets in the direction opposite to the direction c, the first elastic mechanism 61 and the second elastic mechanism 62 rebound and reset in the direction opposite to the first direction a, the first stamping block 1 and the fourth stamping block 4 synchronously reset, the third elastic mechanism 63 rebounds and resets in the direction opposite to the first direction a, the second stamping block 2 resets in the direction opposite to the second direction b, and the rectangular forming hole 5 returns to the size before stamping. In this embodiment, in the process of applying the punching force for the first time when the needle and line are pressed, since the magnitudes of the reaction forces in the first direction a and the second direction b are significantly different, the sum of the magnitudes of the reaction forces in the first direction a and the second direction b and the compression displacement of the first elastic mechanism 61 and the second elastic mechanism 62 in the first direction a is in negative correlation with the compression displacement of the third elastic mechanism 63 in the first direction a, and the reduction value of the rectangular forming hole 5 in the first direction a is significantly greater than the reduction value in the second direction b, so as to form the elastic punching which avoids the real situation and the false situation, and realize that the inner wall of the needle hole is tightly attached to the surface of the metal flat line (refer to fig. 3).
Referring to fig. 1 and 2, the primarily punched flat metal wire suture needle is punched again after rotating for 90 degrees in the forming hole, the first punch block 1 and the third punch block 3 punch and form the arc-shaped connecting surfaces on two sides of the flat surface of the flat metal wire 9 in the first direction a, so that the hole wall of the mounting part 83 of the suture needle 8 clamps the connecting part 91 of the flat metal wire 9, and the second punch block 2 and the fourth punch block 4 punch and limit the two flat surfaces of the flat metal wire 9 in the second direction b, thereby ensuring the punching effect of the first direction a and stabilizing the wire clamping quality (refer to fig. 4).
Referring to fig. 1 and 2, in a preferred embodiment, the third punch 3 and the fourth punch 4 abut each other in the second direction b, the second punch 2 and the third punch 3 abut each other in the first direction a, and the first punch 1 and the second punch 2 abut each other in the second direction b. First punching press piece 1, second punching press piece 2, third punching press piece 3 and fourth punching press piece 4 crisscross setting, the better realization is to the shrink of rectangle shaping hole 5.
Referring to fig. 1, in a preferred embodiment, the stamping die comprises an upper stamping part and a lower stamping part, and the upper stamping part stamps towards the lower stamping part under the action of a power mechanism. The upper punch portion includes a first punch block 1, a second punch block 2, a second elastic mechanism 62, and a third elastic mechanism 63. The upper stamping part further comprises a second fixed seat 72 and a fifth fixed seat 75, wherein the second fixed seat 72 is arranged on the outer side 24 of the second stamping block 2 along the direction opposite to the second direction b and used for limiting the second fixed seat 72; the fifth fixing seat 75 is disposed on the outer side of the first stamped block 1 along the second direction b, and is used for limiting the first stamped block 1. When the upper punch part is subjected to a punching force, the second punch 2 and the second fixed seat 72 are both moved in the second direction b by the second elastic mechanism 62 and the third elastic mechanism 63. Both the first punch block 1 and the fifth fixed seat 75 will move in the first direction a and the second direction b.
Referring to fig. 1 and 2, in a preferred embodiment, the lower punch portion includes a third punch 3, a fourth punch 4, a first fixed seat 71, a third fixed seat 73 and a fourth fixed seat 74. The fourth fixing seat 74 is disposed at the bottom of the third punch 3 along the first direction a, and the third fixing seat 73 is disposed at the outer side 32 of the third punch 3 opposite to the second direction b. The third punching block 3 cannot move along the first direction a due to the limit of the fourth fixed seat 74; since the limiting function of the third fixing seat 73 does not move in the direction opposite to the second direction b, the third punch 3 is fixed in the first direction a and the second direction b. The third fixing seat 73 is located at the bottom 21 of the second punch 2 with a certain clearance. In this embodiment, the third fixing holder 73 and the fourth fixing holder 74 are fixed during punching.
When the needle is added and the thread is clamped, the flat metal wire 9 and the sewing needle 8 are firstly inserted into the rectangular forming hole 5, for example, the pre-punching mounting part 84 of the sewing needle 8 is firstly inserted into the rectangular forming hole 5, and then the pre-punching connecting part 93 of the flat metal wire 9 is inserted into the blind hole of the pre-punching mounting part 84 of the sewing needle 8. Opening a stamping die, wherein a power mechanism provides stamping force for a stamping mechanism along a third direction c, a second stamping block 2 moves along a second direction b to enable a rectangular forming hole 5 to shrink along the second direction b, the first stamping block moves downwards towards the first direction a while the rectangular forming hole 5 shrinks to influence a fourth stamping block 4 which is mutually abutted to enable the fourth stamping block to move towards the first direction a, a third elastic mechanism is compressed by the downward movement of the stamping mechanism to push the second stamping block 2 to move towards the second direction b, when the first stamping block 1 stamps towards a third stamping block 3 along the first direction a and the second stamping block 2 stamps towards the fourth stamping block 4 along the second direction b, when the resistance in the first direction a is lower than, equal to or higher than the resistance in the second direction b, the compression displacement of a first elastic mechanism 61, a second elastic mechanism 62 and the third elastic mechanism 62 is changed to form elastic stamping, the rectangular forming holes 5 are respectively reduced into flat rectangular, square or vertical rectangular shapes.
Referring to fig. 3 and 4, in a preferred embodiment, the rectangular shaped apertures 5 have a hole depth of 1.5-3 mm.
Referring to fig. 5-8, this embodiment further provides a surgical suture apparatus obtained by the stamping die provided in any of the above embodiments. The surgical suture device comprises a suture needle 8 and a suture thread 9, wherein the suture needle 8 comprises a needle point part 81, a needle body 82 and a mounting part 83 which are connected with each other, the mounting part 83 is provided with a first flattening plane 831, a second flattening plane 832, a third flattening plane 833 and a fourth flattening plane 834, the first flattening plane 831 and the third flattening plane 833 are oppositely arranged, the second flattening plane 832 and the fourth flattening plane 834 are oppositely arranged, a mounting area is formed between the first flattening plane 831, the second flattening plane 832, the third flattening plane 833 and the fourth flattening plane 834, the cross section of the mounting area can be rectangular, the suture thread 9 comprises a connecting part 91 and a thread main body 92 which are connected in sequence, and the connecting part 91 is in the mounting area in a limiting mode. The installation part 83 of the surgical suture device provided by the embodiment is provided with four flattening planes which can be obtained by stamping better, the compression connection part 91 can be arranged in the installation area better by the arrangement of the four flattening planes, and the installation of the suture needle 8 and the suture line 9 is more firm by the arrangement of the structure.
Referring to fig. 5-8, in a preferred embodiment, the connecting portion 91 includes a front connecting end 911 and a rear connecting end 912 connected with each other, the front connecting end 911 is connected with the thread main body 92, the front connecting end 911 is fixed in the installation region, the rear connecting end 912 is limited outside the installation region, and the separation of the suture needle 8 and the suture thread 9 is further prevented by the limitation of the rear connecting end 912.
Referring to fig. 5-8, in a further preferred embodiment, the front connection end 911 is recessed relative to the rear connection end 912 and the wire body 92 such that it is confined outside the mounting region, preferably to achieve secure mounting of the front connection end 911 in the mounting region.
Referring to fig. 5-8, in a preferred embodiment, the attachment portion 91 is provided with a first flat surface 9111 and a third flat surface 9113 in the mounting area, the first flat surface 9111 and the third flat surface 9113 are oppositely disposed, and the first flat surface 9111 is adjacent to the first crush plane 831 and is parallel to the first crush plane 831, and the third flat surface 9113 is adjacent to the third crush plane 833 and is parallel to the third crush plane 833, which in this embodiment is not perfectly parallel, allowing for some tolerance. In this embodiment, the first flat surface 9111 and the third flat surface 9113 are provided through the connecting portion 91, and the surgical suture apparatus can be obtained by punching and can have a good positioning effect.
Referring to fig. 5 to 8, in a preferred embodiment, the projection direction d of the needle tip portion 81 is perpendicular to the first flat plane 9111, in this embodiment, the first flat plane 9111 is parallel to the first flat plane 831, and by defining the projection direction d of the needle tip portion 81 to be perpendicular to the first flat plane 9111, the projection direction d of the needle tip portion 81 to be perpendicular to the first flat plane 831 is further implemented, so as to ensure the installation and positioning of the suture needle 8 and the suture thread 9, and to implement the accurate installation and positioning of the suture needle 8 and the suture thread 9, which can be better implemented when the surgical suture apparatus of this embodiment is used in a surgical procedure, when the suture thread 9 passes through a sutured tissue, no risk of cutting and damaging the tissue is caused, and the surgical risk can be reduced.
Referring to fig. 5-8, in a preferred embodiment, the connecting portion 91 is further provided with a second flat plane 9112 and a fourth flat plane 9114 located in the mounting region, the second flat plane 9112 and the fourth flat plane 9114 being oppositely disposed with the second flat plane 9112 being proximate to the second flattening plane 832 and parallel to the second flattening plane 832 and the fourth flat plane 9114 being proximate to the fourth flattening plane 834 and parallel to the fourth flattening plane 834. Through setting up second flat plane 9112 and fourth flat plane 9114 in this embodiment, realize that second flattens plane 832 and fourth flattens plane 834 and can realize better extrusion to second flat plane 9112 and fourth flat plane 9114 respectively for better installation effect is realized, makes the installation of sewing needle 8 and stylolite 9 more firm. And this structure is also easily realized by punching.
Referring to fig. 5-8, in a preferred embodiment, the areas of first and third flattened planes 831, 833 are greater than the areas of second and fourth flattened planes 832, 834, and the areas of first and third flat planes 9111, 9113 are greater than the areas of second and fourth flat planes 9112, 9114.
Referring to fig. 5-8, in a preferred embodiment, the first, third, second and fourth flat surfaces 9111, 9113, 9112 and 9114 abut the inner wall of the mounting portion 83. The mounting portion 83 is realized to be able to clamp the first flat plane 9111, the third flat plane 9113, the second flat plane 9112, and the fourth flat plane 9114 well.
Referring to fig. 5-8, in a preferred embodiment, adjacent flat surfaces of the first flat surface 9111, the second flat surface 9112, the third flat surface 9113 and the fourth flat surface 9114 are connected by a curved surface, so that the contact surface between the suture needle 8 and the suture thread 9 is more, the suture needle 8 can better clamp the suture thread 9, and the suture thread 9 cannot slip off from the suture thread during surgical suture.
Referring to fig. 5-8, in a preferred embodiment, adjacent flattened planes of first flattened plane 831, second flattened plane 832, third flattened plane 833 and fourth flattened plane 834 are connected by a transition surface 10, transition surface 10 is an arc surface or a plane, and transition surface 10 is provided to make the connection of the flattened planes smoother and reduce the injury to the human body during the operation.
Referring to fig. 5-8, the mounting portion 83 is connected with the needle body 82 through the arc surface 11, and the arc surface 11 is smoother, so that the injury to the human body in the operation process is reduced.
Referring to fig. 9, the present invention further provides a method for adding and clamping a needle of a flat metal suture needle, comprising the following steps:
providing the stamping die;
the utility model provides a flat metal wire suture needle, including flat metal wire 9 and suture needle 8, flat metal wire 9 has connecting portion 93 before the punching press, and connecting portion 93 is provided with two flat planes before the punching press, and two flat planes set up relatively, and two flat planar both sides are respectively through two cambered surface connections, and suture needle 8 includes needle point portion 81, needle body 82 and installation department 84 before the punching press. The structure of the flat metal wire 9 and the suture needle 8 in this embodiment can also be referred to the structure of the flat metal wire 9 and the suture needle 8 disclosed in patent publication nos. CN209713019U and CN 109363743A.
Mounting process before stamping of S1: extending a stamping front installation part 84 of a sewing needle (8) into the rectangular forming hole 5, installing a stamping front connection part 93 of the flat metal wire 9 in the stamping front installation part 84 of the sewing needle 8, and then respectively arranging two flat planes of the stamping front connection part 93 of the installed flat metal wire 9 opposite to the first stamping block 1 and the third stamping block 3;
s2 first punch: applying a stamping force to the installed metal flat wire 9 and the sewing needle 8, and shrinking the rectangular forming hole 5 to perform first needle clamping to complete first forming;
s3 second stamping: and rotating the first-time formed flat metal wire 9 and the sewing needle 8 by 90 degrees in the rectangular forming hole 5, and applying the punching force again to finish second-time forming.
S3 third press: and rotating the flat metal wire suture needle subjected to the secondary forming for 90 degrees in the rectangular forming hole 5 again, stamping again, and finishing and forming.
In this embodiment, the mounting portion 83 is obtained by deforming the pre-press mounting portion 84 by the pressing force, and the connection portion 91 is obtained by deforming the pre-press connection portion 93.
Referring to FIG. 4, in a preferred embodiment, in step (2), the flat metal wire 9 and the needle 8 are extended into the rectangular shaped hole 5 such that the head 91 of the flat metal wire 9 is positioned outside the rectangular shaped hole 5. The needle point and the needle body are also positioned outside the rectangular forming hole, so that the head of the suture needle with the flat metal wire can be hung upside down after the needle is added and the wire is clamped, and the flat metal wire is better prevented from slipping from the suture needle.
The pre-press mounting portion 84 of the present embodiment is pressed to obtain a mounting portion 83 having a first squashed plane 831, a second squashed plane 832, a third squashed plane 833 and a fourth squashed plane 834.
In this embodiment, when the punching press, before the punching press connecting part 93 includes connecting end 931 and punching press rear connection end 932 before the punching press, when the punching press, the punching press piece is to punching press front connection end 931, obtains the preceding connecting end 911 of connecting part 91, and the extrusion of punching press piece is not received to connecting end 932 after the punching press, and the spacing that the rear connection end 912 that obtains can be better is outside the mounting region.
In this embodiment, during punching, two sides of the two flat planes are connected through two arc surfaces respectively when not punching, and after punching, the two arc surfaces are extruded by punching force to form a second flat plane 9112 and a fourth flat plane 9114.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by the present specification, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A stamping die is characterized by comprising a stamping mechanism and a power mechanism for providing stamping force for the stamping mechanism, wherein the stamping mechanism comprises a first stamping block (1), a second stamping block (2), a third stamping block (3) and a fourth stamping block (4) which are sequentially and adjacently arranged, a rectangular forming hole (5) is formed by surrounding the first stamping block (1), the second stamping block (2), the third stamping block (3) and the fourth stamping block (4), the third stamping block (3) is fixed on a first direction (a) and cannot move along the first direction (a), the fourth stamping block (4) is fixed on a second direction (b) and cannot move along the second direction (b), the first stamping block (1) and the third stamping block (3) are oppositely arranged and can move along the first direction (a), and the rectangular forming hole (5) can shrink along the first direction (a), the second punching block (2) and the fourth punching block (4) are arranged oppositely and can move along the second direction (b), so that the rectangular forming hole (5) is contracted along the second direction (b).
2. A stamping die according to claim 1, characterized in that the first (1) and second (2) stamping blocks abut each other in the second direction (b), and the power mechanism is connected to the first (1) and second (2) stamping blocks and simultaneously drives the first stamping block (1) in the first direction (a) towards the third stamping block (3) and the second stamping block (2) in the second direction (b) towards the fourth stamping block (4).
3. The press die of claim 1, wherein the first direction (a) and the second direction (b) are perpendicular to each other, and the power mechanism provides a pressing force to the pressing mechanism in a third direction different from the first direction (a) and the second direction (b), the third direction (c) being between the first direction and the second direction.
4. The stamping die of claim 3, wherein the power mechanism applies a total stamping force in the third direction (c) that is resolved into a first stamping force in the first direction (a) and a second stamping force in the second direction (b).
5. A press tool as claimed in claim 1, characterised in that the first press block (1) and the fourth press block (4) abut each other in a first direction (a), the first press block (1) being further movable in a second direction (b), the first press block (1) being movable in the first direction (a) and the second direction (b) and carrying the fourth press block (4) in the first direction (a) when the power mechanism applies a pressing force to the press mechanism.
6. A stamping die according to claim 4, characterized in that the bottom of the fourth stamping block (4) in the first direction (a) is provided with a first elastic mechanism (61), the top of the first stamping block (1) in the first direction (a) is provided with a second elastic mechanism (62), both the first elastic mechanism (61) and the second elastic mechanism (62) are compressible in the first direction (a), and the outside of the fourth stamping block (4) in the second direction (b) is provided with a first fixed seat (71) for preventing the fourth stamping block (4) from moving in the second direction (b).
7. The stamping die according to claim 4, wherein the third and fourth stamping blocks (3, 4) abut each other in a second direction (b), the second and third stamping blocks (2, 3) abut each other in the first direction (a), and the first and second stamping blocks (1, 2) abut each other in the second direction (b).
8. The stamping die according to claim 7, wherein the third stamping block (3) is fixed in the first direction (a) and the second direction (b) so as not to move in the first direction (a) and the second direction (b), and a third elastic mechanism (63) is provided on the top of the second stamping block (2) in the first direction (a), the third elastic mechanism (63) being compressible in the first direction (a).
9. A method for adding needles and clamping wires of flat metal wires is characterized by comprising the following steps:
(1) providing a stamping die as claimed in any one of claims 1 to 8;
(2) providing a flat metal wire (9) and a suture needle (8), wherein the flat metal wire (9) is provided with a stamping front connecting part (93), two flat planes are arranged on the stamping front connecting part (93) and oppositely arranged, the suture needle (8) comprises a needle point part (81), a needle body (82) and a stamping front mounting part (84), the flat metal wire (9) and the suture needle (8) are both stretched into the rectangular forming hole (5), the stamping front connecting part (93) of the flat metal wire (9) is mounted in the stamping front mounting part (84) of the suture needle (8), and the two flat planes of the stamping front connecting part (93) of the flat metal wire (9) are respectively oppositely arranged with the first stamping block (1) and the third stamping block (3);
(3) applying a stamping force to the mounted pre-stamping mounting part 84 to complete the first forming;
(4) and rotating the metal flat wire (9) and the sewing needle (8) which are formed at the first time in the rectangular forming hole (5) for 90 degrees, and applying the stamping force again to finish the second forming.
10. The method for adding and pressing the flat metal wire suture needle as claimed in claim 9, wherein in the step (2), when the flat metal wire (9) and the suture needle (8) are inserted into the rectangular forming hole (5), the needle tip portion (81) and the needle body (82) are positioned outside the rectangular forming hole (5); the tail end of the connecting part (93) is positioned outside the rectangular forming hole (5) and far away from the other side of the needle tip part (81) and the needle body (82).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011040888.3A CN114273565A (en) | 2020-09-28 | 2020-09-28 | Stamping die and needle-adding and wire-clamping method of metal flat wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011040888.3A CN114273565A (en) | 2020-09-28 | 2020-09-28 | Stamping die and needle-adding and wire-clamping method of metal flat wire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114273565A true CN114273565A (en) | 2022-04-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011040888.3A Pending CN114273565A (en) | 2020-09-28 | 2020-09-28 | Stamping die and needle-adding and wire-clamping method of metal flat wire |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114273565A (en) |
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| US5350373A (en) * | 1992-10-09 | 1994-09-27 | United States Surgical Corporation | Apparatus for attaching surgical suture components |
| JPH08238251A (en) * | 1995-03-07 | 1996-09-17 | Iken Kogyo:Kk | Method for caulking suture needle for surgical operation |
| JPH1034229A (en) * | 1996-07-23 | 1998-02-10 | Ishikawajima Harima Heavy Ind Co Ltd | Manufacture of steel pillar |
| JPH11147150A (en) * | 1997-11-14 | 1999-06-02 | Abe Kinzoku Kosan Kk | Treatment of both end parts of unfinished rhombus wire gauze and treating device for both end parts of unfinished rhombus wire gauze |
| US6016682A (en) * | 1998-08-11 | 2000-01-25 | Ethicon, Inc. | Swaging apparatus for surgical needles |
| JP2000288282A (en) * | 1999-04-05 | 2000-10-17 | Organ Needle Co Ltd | Press device for sewing machine needle, and press work of sewing machine needle |
| CN108480515A (en) * | 2016-04-12 | 2018-09-04 | 陈键 | A kind of processing method of power construction reinforcing steel bar frame |
| CN209255644U (en) * | 2018-12-29 | 2019-08-16 | 厦门天工创新科技发展有限公司 | A kind of metal powder injection molding product shaping mould |
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Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU617154A1 (en) * | 1977-02-15 | 1978-07-30 | Физико-технический институт АН Белорусской ССР | Tool for drawing by forging |
| US5230352A (en) * | 1992-03-04 | 1993-07-27 | American Cyanamid Company | Medical suturing device, a single-strike die mechanism, and a method of using said die mechanism for forming the medical suturing device |
| US5350373A (en) * | 1992-10-09 | 1994-09-27 | United States Surgical Corporation | Apparatus for attaching surgical suture components |
| JPH08238251A (en) * | 1995-03-07 | 1996-09-17 | Iken Kogyo:Kk | Method for caulking suture needle for surgical operation |
| JPH1034229A (en) * | 1996-07-23 | 1998-02-10 | Ishikawajima Harima Heavy Ind Co Ltd | Manufacture of steel pillar |
| JPH11147150A (en) * | 1997-11-14 | 1999-06-02 | Abe Kinzoku Kosan Kk | Treatment of both end parts of unfinished rhombus wire gauze and treating device for both end parts of unfinished rhombus wire gauze |
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| JP2000288282A (en) * | 1999-04-05 | 2000-10-17 | Organ Needle Co Ltd | Press device for sewing machine needle, and press work of sewing machine needle |
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| CN209255644U (en) * | 2018-12-29 | 2019-08-16 | 厦门天工创新科技发展有限公司 | A kind of metal powder injection molding product shaping mould |
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