JPH0722716U - Egg collection needle for egg collection machine - Google Patents

Abstract

(57) [Summary] [Purpose] To provide an egg-collecting needle for an egg-collecting device that does not damage the egg, is easy to aspirate, and can be economically replaced when the needle tip is worn [Structure] Main body except needle tip 11. 21 is formed to have an inner diameter larger than that of the needle tip 11.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an egg-collecting needle for an egg-collecting device, and more particularly to an egg-collecting needle for an egg-collecting device that collects eggs from ovaries of livestock, mainly cows and horses.

[0002]

[Technical background]

 To collect eggs from cows, horses, etc., an ultrasonic diagnostic apparatus is used to project the ovaries of livestock such as cows, horses, etc. There is a method of collecting. The egg collecting needle used for such an egg collecting method is supported by the elongated handle so that it can be retracted from the tip of the elongated handle inserted into the vagina, and the elongated handle positioned outside the vagina. The total length is about 60 cm to 70 cm so that it can be artificially operated from the holding part.

[0003]

[Problems to be solved by the device]

 By the way, the inner diameter of the suction path of the egg-collecting needle for the egg-collecting device was 0. 6 to 0. The diameter is about 9 mm, which is extremely small. With an egg collection needle with such a small suction path, when the physiologically complete mature egg is obtained, the contact rate of the egg with the inner surface of the path is high, resulting in a high degree of damage to the egg in the middle. In addition, efficient egg collection cannot always be performed because it is prone to coagulation due to blood contamination. Also, if the needle tip wears after several uses, the egg collection needle itself must be replaced, which is very uneconomical.

The present invention has been made in view of the above-mentioned conventional circumstances, and an object thereof is an egg collecting device which does not damage an egg, is easily sucked, and can be economically replaced when the needle tip is worn. The purpose is to provide an egg collecting needle.

[0005]

[Means for Solving the Problems]

 The technical means taken to achieve the above object is, in claim 1, that the main body portion excluding the needle tip portion is formed to have an inner diameter larger than the inner diameter of the needle tip portion. The gist of claim 2 is that the inner surface of the body of claim 1 is formed of a metal layer or a synthetic resin layer having excellent slidability. The gist of claim 3 is that the needle tip part of claim 1 or 2 is replaceably connected to the main body part. In Claim 4, the rear end portion of the needle tip portion of Claim 1 or 2 constitutes a fitting relationship in which it is fitted into the tip portion of the main body portion, and is fixed to the outer peripheral surface of the main body portion to reach the outer peripheral surface of the needle tip portion. The gist is that the needle tip portion is attached by an adhesive layer that is formed by opening a working hole and is filled in the fixing hole and attached to the outer surface of the needle tip portion.

[0006]

[Action]

 The above technical means have the following effects. (Claim 1) The egg sucked at the tip of the needle immediately reaches the guideway where the diameter of the egg is larger than that of the needletip and the contact rate of the egg to the inner surface of the passage is low, and the egg is collected from the guideway. To do. (Claim 2) An egg is smoothly guided by a guide passage having a diameter larger than that of the needle tip portion and having good slidability, and the egg is collected from the guide passage. (Claim 3) Only the needle tip is replaced. (Claim 4) The needle tip portion and the main body portion are attached in a fitting relationship.

[0007]

[Effect of device]

 Since the present invention is configured as described above, it has the following advantages. (Claim 1) The main body portion excluding the needle tip portion is formed to have an inner diameter larger than the inner diameter of the needle tip portion so that the mature egg sucked from the needle tip portion has a low contact rate with the inner surface of the tract immediately. It is designed to reach a large guideway with a large diameter such as blood where coagulation does not easily occur, and to guide and collect the guideway. Therefore, it is an egg-picking needle for an egg-picker with a long tip of about 60 cm to 70 cm and a thin tip. Can also avoid clogging of mature eggs, reduce damage to the eggs, and collect eggs reliably. (Claim 2) Further, since the main body is made of a material having excellent slipperiness, the degree of damage to the egg in the middle of the process is very low. As a result of not easily coagulating, it is possible to promise stable egg collection efficiency at all times. (Claim 3) Even when the needle tip portion is exchangeably connected to the main body portion and the sharpness of the needle tip is lost due to abrasion, and the replacement is unavoidable, only the needle tip portion can be exchanged. Therefore, it is not necessary to replace the whole, and the replacement can be performed at low cost. (Claim 4) Since the needle tip portion and the main body portion are attached to each other in a fitting relationship using an adhesive, a protrusion is not formed unlike when connecting with a connecting metal fitting or the like. Therefore, when the needle tip reaches the ovary, the clearance between the main body and the slide guide (protective tube in this embodiment) is small, and there is no rattling, and the needle tip is smoothly guided. It is suitable for this.

[0008]

【Example】

 Next, an embodiment of the present invention will be described with reference to the drawings. 1 to 3 show an embodiment of claims 1, 2 and 3 (hereinafter referred to as a first embodiment), and FIG. 4 shows another embodiment (hereinafter referred to as a second embodiment). Reference numeral 5 denotes an embodiment of claim 4 (hereinafter referred to as a third embodiment).

In the first embodiment, reference numeral A is an egg collecting device, 1 is an egg collecting needle for the egg collecting device, B is an ultrasonic diagnostic apparatus, and b is an ultrasonic contactor. The egg-collecting device A includes an egg-collecting needle 1 for the egg-collecting device, a protective cylinder 2 for guiding the egg-collecting needle 1 in and out, an elongated handle 3 supporting the egg-collecting needle 1, and an intake device which is connected to the rear end of the egg-collecting needle 1. 4. The protective cylinder 2 is provided with a rear end portion thereof, the egg collecting needle 1 and an operating portion 5 formed between the three members of the elongated handle 3.

The ultrasonic probe b transmits a high-frequency sound wave into the living body of a domestic animal, detects echoes that are reflected by each boundary interface (epidermal / fat / muscle, etc.) of tissue and return. It is the ultrasonic transmitter / receiver of a conventionally known ultrasonic diagnostic apparatus B for diagnosing a living body with high accuracy and instantly by imaging, and is connected to the ultrasonic diagnostic apparatus B by a contact code b 1. As shown in the figure, the synthetic resin-made long handle 3 is fitted and fixed with its surface exposed to a set portion 13 recessed at the tip thereof.

The intake device 4 includes a suction pump 14, an egg storage container 34 that communicates with the pump 14 via a flexible connecting tube 24, and a double-type egg storage container 34, 34. The connecting pipe 44 has the same properties as the connecting pipe, and the connecting pipe 24 is connected to the upstream egg storage container 34 at the downstream end and the upstream end is connected to the egg collecting needle 1 for the egg collection device. Although not shown, the intake device 4 may be a syringe-like suction mechanism that connects a syringe to the rear end of the egg-collecting needle 1 for the egg-collector to aspirate.

The protective cylinder 2 is formed by cutting a desired thin metal tube made of stainless steel or the like having a slightly large diameter, which can slidably guide the egg collecting needle 1 for the egg collector into a relatively long shape, Most of the egg-collecting needle 1 for the egg-collecting device is slidably accommodated, is integrally fixed to the elongated handle body 3, and the tip is located inside the ultrasonic probe b. I am doing it.

The elongated handle 3 is formed in a substantially rod shape having an outer shape such that it can be loosely inserted into the vagina 100. More specifically, the grip function portion 23 occupies a length of about 1/4 to 1/3, and the lump portion 33 that is formed in the same body as the grip function portion 23 and occupies the remaining portion. A mounting groove 43 is provided in the upper surface portion of the functional portion 23 and the lump portion 33 over the entire length in the longitudinal direction, and the protective cylinder 2 accommodating the egg collecting needle 1 for the egg collecting device is fitted into the mounting groove 43. In addition to being fixed, the block portion 33 has the set portion 13 whose center line is oriented in a direction intersecting the virtual extension line of the protective cylinder 2 and the communication groove 53 communicating with the set portion 13. The probe b for ultrasonic waves is fitted and fixed to 13 and the connecting cord b1 for connecting to the ultrasonic diagnostic apparatus B is inserted into the communicating groove 53.

Further, the long stalk 3 is an egg nest when a technician puts his or her hand through the rectum and draws it with a skill until it is separated by a predetermined distance from the deep end of the vaginal wall 101. If the egg-collecting needle 1 for the egg-collecting device faces the 200 and advances the same distance as the predetermined interval, the egg-collecting needle 1 can reach the ovary 200. The tilt angle is slightly upward. The above-mentioned predetermined interval is about 2 cm in this embodiment, though it varies depending on a slight difference in the inclination angle of the protective cylinder 2 with respect to the ultrasonic probe b.

The egg-collecting needle 1 for an egg-collecting device is composed of a needle tip portion 11 and a body portion 21 that connects the needle tip portion 11 in a replaceable manner, and one end of the body portion 21 can be inserted into or removed from the rear end portion of the body portion 21. It is in communication with the intake device 4 via a flexible connecting pipe 24 which is operatively connected.

The needle tip 11 is formed by sharply cutting one end of a small-diameter tubular material made of a desired metal such as stainless steel in a slanting manner, and has an inner diameter of about 0.8 mm.

The main body portion 21 cuts a small-diameter tubular material formed of a fluororesin having excellent slidability, a polyacetal resin having self-lubricating ability, or another metal material having excellent slidability into a predetermined length. The inner diameter is about 1.2 mm to 1.8 mm. The entire main body portion 21 does not need to be formed of a material having excellent slidability, and may have a cross-sectional structure in which the inner surface of a metal tube is coated with a resin having excellent slidability.

As shown in FIGS. 2 and 3, the connection between the needle tip portion 11 and the main body portion 21 is a chuck having a split groove 31 a formed integrally with the rear end of the needle tip portion 11 at the front end of the main body portion 21. When the nut body 51 is screwed into the screw portion 41 that is screwed onto the outer peripheral surface of the chuck portion 31, the chuck portion 31 clamps the rear end of the needle tip portion 11 and The portion 11 is adapted to be exchangeably connected to the main body portion 21. In this state, the needle tip portion 11 is fitted into the guide passage 21a formed in the main body portion 21. Further, the needle tip portion 11 has the needle tip 11a located inside the tip of the long handle 3 and the vaginal wall 101 inserted into the tip of the long handle 3 when the nut body 51 is in contact with the tip of the protective cylinder 2 of the long handle 3. When the needle tip 11a reaches the ovary 200, the nut body 51 has such a length that it does not come into contact with the vaginal wall 101.

The operation portion 5 has a guide groove 25 formed in parallel with the egg collecting needle 1 for the egg collecting device on the upper surface of the cylindrical hand portion 15 which is continuously connected to the rear end of the protective cylinder 2 in an expanded manner. The operation protrusion 45 protruding from the needle holder 35, which is fixed by penetrating the needle 1 and slides in the tubular proximal portion 15, is protruded upward from the guide groove 25. When the needle holder 35 slides in the tubular hand portion 15 by pushing in the front-back direction, the needle tip portion 11 projects from the front end of the elongated handle 3.

Next, the operation of the first embodiment will be described. The ovary 200 is artificially drawn to the vicinity of the deep end of the vaginal wall 101 by inserting a hand from the rectum of the living body, and in parallel, the grip function unit 23 is gripped and the ultrasonic probe b is applied to the deep end of the vaginal wall 101. Insert it into the vagina 100 in close contact and visualize the ovary 200 with small follicles. Next, while watching the image, the operating projection 45 is operated at the proximal portion by the forward distance corresponding to the predetermined distance to move the egg-collecting needle 1 for the egg-collector forward, and the needle tip 11a reaches the small follicle in the ovary 200. Close. Then, the pump 14 is operated to collect eggs in the egg storage container 34. At the time of egg collection, the egg is sucked from the thin needle tip 1, but the contact rate of the egg with the inner surface of the road is lower than that of the needle tip 1 immediately. It reaches the guide passage 21a of the formed main body portion 21 and collects from that portion into the egg storage container 34 via the communication pipe 24.

Next, the second embodiment will be described. This embodiment shows a structure in which the tip portion 11 of the main body portion 21 is not processed and the needle tip portion 11 is exchangeably connected. In this case, the chuck portion 31 is formed of a separate member (made of metal or resin), and the main body portion 21 is made of a fluororesin having excellent slipperiness and a polyacetal resin having self-lubricating property as in the above embodiment. The inner diameter of the needle tip portion 11 and the inner diameter of the main body portion 21 are the same as those of the first embodiment.

The same operation as that of the first embodiment except that the egg does not easily adhere to the inner circumferential surface of the passage in the main body 21 due to the action of slipperiness and that the processing of the main body 21 is unnecessary. Since it plays, detailed description is omitted.

Next, the third embodiment will be described. This embodiment shows a structure in which the needle tip portion 11 and the main body portion 21 are attached only by the fitting relationship, and is a flexible fluororesin having excellent slidability. A plurality of fixing holes 61 are formed on the outer peripheral surface of the tip of the main body 21 made of a pipe (teflon pipe) in the lengthwise direction and the circumferential direction, and the rear end of the needle tip 11 is the front end of the main body 21. Then, the fixing hole 61 is filled with an adhesive agent (adhesive layer) 71, and the adhesive agent (adhesive layer) 71 is adhered to the outer peripheral surface of the needle tip portion 11 and solidified to form the adhesive agent. 71 is designed to act as a protrusion for retaining. In this embodiment, although the main body 21 is flexible, since it is guided by the protection tube 2, the needle tip 11a is smoothly guided to the ovary, and the needle tip 11 and the main body 21 are fitted together. The protective cylinder 2 may have a small diameter because it can be connected by a hook.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an egg collecting device in a front view showing a usage state of an egg collecting needle for an egg collecting device according to a first embodiment.

FIG. 2 is a front sectional view of a main part.

FIG. 3 is a front cross-sectional view of the main part showing a state in which the needle tip part is replaced.

FIG. 4 is a front sectional view showing a connecting portion between a needle tip portion and a main body portion, which is an essential portion of the second embodiment.

FIG. 5 is a front sectional view of an essential part of the third embodiment.

[Explanation of symbols]

 11: Needle tip 21: Main body 1: Egg collection needle for egg collection device 71: Adhesive (adhesive layer) 61: Fixing hole

Claims (4)

[Scope of utility model registration request] 1. An egg-collecting needle for an egg-collecting device, wherein the main body portion excluding the needle tip portion is formed to have an inner diameter larger than the inner diameter of the needle tip portion. 2. The egg-collecting needle for an egg-collecting device according to claim 1, wherein the inner surface of the main body is formed of a metal layer or a synthetic resin layer having excellent slipperiness. 3. The egg-collecting needle for an egg-collecting device according to claim 1, wherein the needle tip portion is connected to the body portion in a replaceable manner. 4. A fitting relationship in which a rear end portion of the needle tip portion is fitted into a tip end portion of the main body portion is formed, and a fixing hole reaching the outer peripheral surface of the needle tip portion is formed in the outer peripheral surface of the main body portion. 3. The egg-collecting needle for an egg-collecting device according to claim 1, wherein the needle-tip portion is attached by an adhesive layer filled in the fixing hole and attached to the outer surface of the needle-tip portion.