JP5226377B2 - Fish squeezer - Google Patents

Description

  The present invention relates to a fish nerve fastener. Specifically, the present invention relates to a fish nerve squeezing tool that can maintain freshness by piercing the spinal cord of raw fish.

  Normally, fish stiffen after about 4 hours after death, and after this stiffening, fish that have been landed in the sea will progress to maturity and decay, and if they are not cooked within 4 hours, the freshness will drop. In view of this, a method that can maintain freshness even when transported for a relatively long period of time has been proposed. Specifically, as shown in FIG. 6, the live fish 101 is killed immediately, and the spine 102 (spinal cord) of the fish 101 is cut at the back of the caudal vertebra. , The central nerve 104 and the medulla and brain 105 in the spine 102 are instantaneously destroyed. Since the central nerve 104 is completely destroyed, the consumption of adenosine triphosphate, which is an energy substance for muscle contraction exercise, can be greatly suppressed, and the self-digestion of the fish body can be greatly suppressed. The freshness can be maintained over the entire area.

JP-A-7-264968

  However, in the invention of Patent Document 1, specifically, the fish slaughter immediately killed is inserted, a knife is inserted, the spinal cord is cut at the base, and several aorta and vena cava located at the base of the spinal cord are cut. Next, by cutting a part of the back of the caudal vertebra with a knife or the like, the spine is cut at its end, and the nozzle in the nerve removal device is inserted into the nerve arch of the spine from this cut point. It is inserted to eject the fluid from the tip of the nozzle to discharge the nerve. However, many processing steps are required, and there is a problem that a lot of work is required when many fish are processed at a time on a ship or the like.

  On the other hand, traditionally, fishermen use a wire with a sharp point, such as a piano wire, wire, or stainless steel, as a means of narrowing down the nerve relatively easily, and penetrate the spinal cord from the center between the eyes of the fish to the tail. Has been done.

  However, in order to penetrate these wires along the spinal cord, skillful skills are required because fish have unique body hardness, softness and sliminess.

  In addition, a hard wire like a piano wire has little elasticity and the surface is smooth, so it is very difficult to penetrate along the curved spinal cord of fish, and the wire penetrates the spinal cord and is pulled out. However, there is a problem that the central nerve cannot be completely destroyed by the movement of the wire when the surface is smooth.

  The present invention was devised in view of the above points, and an object thereof is to provide a fish nerve squeezing tool that can penetrate a gap from the spinal cord by applying a non-slip process to the surface of the wire. It is.

  In order to achieve the above object, a fish nerve tightening tool according to the present invention comprises a wire having elastic force that penetrates the spinal cord from the head to the tail of a live fish, and a non-slip portion formed on the surface of the wire. Prepare.

  Here, the non-slip portion formed by the special wire processing high-speed machine can penetrate the surface of the wire passing through the spinal cord from the head of the live fish to the tail without shifting from the spinal cord of the fish.

  In addition, the non-slip portion is formed in a corrugated shape so that the concavo-convex cross section is a forward direction with respect to the traveling direction of the wire, so that the wire can penetrate in any direction along the spinal cord without slipping. In addition, when the wire is pulled out, the concavo-convex cross section is reversed, so that contact resistance is generated between the surface of the wire 2 and the nerve, and the nerve can be reliably destroyed.

  Further, the leading end of the wire rod is formed in a projecting shape, and the handle portion is formed at the proximal end, so that it can be pierced at an accurate position and can be easily penetrated.

  In addition, since the wire is formed of stainless steel, it can be penetrated hygienically without bending because it has appropriate hardness and elasticity.

  According to the fish nerve squeezing tool of the present invention, the central nerve can be penetrated without shifting from the spinal cord by applying a non-slip process to the surface of the wire rod of the nerve squeezing tool when penetrating the spinal cord from the vicinity of the fish eye to the tail. It is possible to destroy and maintain the freshness of the fish for a long time.

  In addition, by applying anti-slip processing to the surface of the wire rod of the nerve tightening tool, the cells surrounding the wire passing through the spinal cord are also destroyed by frictional resistance, so that the accuracy of destruction of the central nerve can be increased.

Hereinafter, embodiments of the present invention will be described with reference to the drawings to provide an understanding of the present invention.
FIG. 1 is a perspective view showing an example of a fish nerve squeezing tool to which the present invention is applied, and FIG. 2 is a partially enlarged explanatory view of an example of anti-slip processing of a fish nerve squeezing tool to which the present invention is applied.

  The nerve squeezing tool 1 shown here is formed of, for example, a stainless steel (trade name “SUS304 full hard”) wire according to the size and type of the fish, the wire diameter is 1.0 mm, and the total length is 30 cm, 50 cm, 80 cm, 100 cm, Alternatively, the wire diameter is 1.2 mm and the total length is 30 cm, 50 cm, 80 cm, and 100 cm.

  Further, a handle 3 formed by bending the wire 2 in an annular shape is formed on the proximal end side of the nerve fastener 1, and the distal end thereof is formed in a protruding shape. And the anti-slip process is given to the whole surface over the full length of the wire 2. As shown in FIG.

  In this anti-slip processing, a mesh-like anti-slip portion 4 is formed on the surface of the wire 2 by a special wire processing high-speed machine. This mesh-like anti-slip portion 4 makes it possible to perform reliable nerve tightening without causing slippage that deviates from the traveling direction due to frictional resistance with the fish body when it is inserted into the fish.

  FIG. 3 is an explanatory view showing an example of the anti-slip portion of the fish nerve tightening tool to which the present invention is applied, and the anti-slip portion so that the concavo-convex section is in the forward direction with respect to the traveling direction of the nerve fastener 1. 4 is formed.

  With the above configuration, when the tip of the nerve fastener 1 is pierced into a fish and penetrates along the spinal cord, the wire 2 can penetrate in any direction without slipping, and when the nerve tightening tool 1 is pulled out Since the concavo-convex cross section is in the opposite direction, contact resistance is generated between the surface of the wire 2 and the nerve, so that the nerve is reliably destroyed.

  In this embodiment, the wire of the nerve fastener 1 is formed of stainless steel, but it is not always necessary to use stainless steel. For example, a material having elasticity such as a synthetic resin material or a piano wire may be used. Any material may be used, but it is preferable to use stainless steel (trade name “SUS304 Full Hard”) as a material that has an appropriate hardness and elasticity and can be penetrated without any slip.

  In addition to the non-slip processing of the peripheral surface of the wire, in addition to the processing by the special wire processing high-speed machine detailed in this embodiment, it is produced in large quantities, or when the wire is made of synthetic resin, it is molded by a mold. It is desirable to employ a non-slip process suitable for the production volume or the type of wire.

  In the fish nerve squeezing tool of the present invention constructed as described above, in the case of fish such as horse mackerel, isaki, black and yellow, for example, as shown in FIG. At the position, a piercing auxiliary hole (not shown) is opened to a depth of about 1 to 2 cm with a guide stainless steel wire having a wire diameter of 3 mm.

  Next, the tip of the nerve squeezing tool 1 having a smaller diameter than this auxiliary hole is inserted into the auxiliary hole, and it is pushed out while holding the 3 so that the spinal cord 6 of the fish 5 is slightly adjusted upward until it reaches the tail. After passing through so as not to slip slowly, the nerve squeezing tool 1 is pulled out to destroy the central nerve of the spinal cord, and after nerve squeezing, the heel is cut, the blood is drained and washed with water.

Further, in the case of authenticity, as shown in FIG. 5, an auxiliary insertion hole (not shown) is inserted into the nose of authenticity 7 to a depth of about 1 to 2 cm with a guide stainless steel wire having a diameter of 3 mm. Open.
Next, insert the tip of the nerve squeezing tool 1 into this auxiliary hole, take it out and hold it 3 while pushing it out. After piercing, the central nerve of the spinal cord is destroyed by extracting the nerve squeezing tool 1, and then the nerve is squeezed. Then, the heel is cut, and the blood is drained and washed with water.

It is a perspective view which shows an example of the nerve narrowing tool of the fish to which this invention is applied. It is a partial expanded explanatory view of an example of the non-slip | slipping process of the fish nerve narrowing tool to which this invention is applied. It is explanatory drawing which shows an example of the anti-slip | skid part of the nerve squeezing tool of the fish to which this invention is applied. It is a use explanatory drawing, when using it for fish, such as horse mackerel, Isaki, black, yellowtail, etc. by the fish nerve narrowing tool to which the present invention is applied. It is a use explanatory view in the case of using it seriously with the fish nerve tightening tool to which the present invention is applied. It is explanatory drawing which shows an example of the nerve squeezing of the conventional fish.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Nerve choking tool 2 Wire rod 3 Handle 4 Non-slip part 5 Live fish 6 Spinal cord

Claims (3)

A wire with elastic force that penetrates the spinal cord from the head of the live fish to the tail;
A fish nerve squeezing tool, comprising: a non-slip portion formed in a corrugated shape on the surface of the wire so that the concavo-convex cross section thereof is a forward direction with respect to the traveling direction of the wire. The fish nerve tightening tool according to claim 1, wherein a tip end of the wire rod is formed in a protruding shape and a handle portion is formed at a base end . The fish nerve tightening tool according to claim 1 or 2, wherein the wire is made of stainless steel .

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