CN213047450U

CN213047450U - Movable multi-head rana spinosa needle

Info

Publication number: CN213047450U
Application number: CN202021166616.3U
Authority: CN
Inventors: 孟婷婷; 吴沙; 尚丛珊; 侯亚妮
Original assignee: Xian Peihua University
Current assignee: Chengdu Techman Software Co Ltd
Priority date: 2020-06-22
Filing date: 2020-06-22
Publication date: 2021-04-27
Anticipated expiration: 2030-06-22

Abstract

The utility model provides a mobilizable bull thorn frog needle, includes handle and trompil needle, and the trompil needle sets up bottom surface under the handle, and the opening has been seted up to bottom surface under the handle, and bottom surface open-ended edge sets up the stopper under the handle, runs through on the handle to be provided with two and smashes the needle, and two are smashed the needle and extend to the outside of stopper, and the syringe needle of two and smash the needle is located the outside of trompil needle to the top is surrounded by the stopper on the trompil needle, forms the hole of smashing between trompil needle and the stopper. The utility model discloses only insert the frog once internally, accomplish and destroy brain tissue and destroy the spinal cord tissue, solved in the student experiment that the spinal cord tissue of destroying is inserted the baby for the second time internally, the problem that the pinhole of first time male is difficult to look for has saved experimental time and operating procedure, has improved student's experimental efficiency.

Description

Movable multi-head rana spinosa needle

Technical Field

The utility model relates to a teaching experiment instrument technical field, in particular to mobilizable bull thorn frog needle.

Background

In the experiment process of physiological reflex arcs, students in medical profession firstly smash the brain tissues of frogs or toads and prepare the frogs or toads. Further, the prepared frogs or toads are used as materials to perform a leg bending reflex test. The spinal cord tissue of the frogs or toads was further destroyed and the leg curl reflex test was repeated.

The step of the reflected arc experiment of the frog comprises the following steps: the students who destroy the brain tissues and the spinal cord tissues need to use experimental equipment to prick the frog needle. In the prior art, a frog-piercing needle consists of a handle and a slender needle head. In the operation of smashing the brain tissue and the spinal cord tissue of the frogs, the positions of needle holes for the frogs to be pricked into the frogs are the same, and the brain tissue and the spinal cord tissue are respectively positioned at two sides of the pricking position of the frogs to be pricked. In the experiment, after the brain tissue is firstly destroyed, the rana spinosa needle is drawn out to complete the experiment steps, and then the experiment steps are repeated after the spinal cord is destroyed.

The following problems exist in the current experiment, the frog-piercing needle is drawn out after the brain tissue is smashed, the needle hole is found again when the spinal cord tissue is smashed, but students often cannot find the needle hole in the actual experiment, so that the students must find the second hole again to pierce and smash the spinal cord tissue in the frog body, the operation steps are troublesome, and the normal operation of the experiment is influenced.

Disclosure of Invention

In order to overcome above-mentioned prior art not enough, the utility model aims to provide a mobilizable bull thorn frog needle only inserts the frog once internally, accomplishes and smashes the brain tissue and smashes the spinal cord tissue, has solved and has smashed the spinal cord tissue in the student experiment and inserted the baby for the second time internally, and first male pinhole is difficult to the problem of looking for, has saved experimental time and operating procedure, has improved student's experimental efficiency.

In order to realize the purpose, the utility model discloses a technical scheme is:

the utility model provides a mobilizable bull thorn frog needle, including handle 1 and trompil needle 2, trompil needle 2 sets up bottom surface under handle 1, the opening has been seted up to handle 1 bottom surface down, handle 1 bottom surface open-ended edge sets up stopper 4 down, it is provided with two needle 3 of smashing to run through on the handle 1, two needle 3 of smashing extend to the outside of stopper 4, and two needle heads of smashing needle 3 are located the outside of

trompil needle

2, and 2 top of trompil needles are surrounded by stopper 4, form the hole of smashing between trompil needle 2 and the stopper 4.

The handle 1 is a hollow shell structure.

The stopper 4 is a cylindrical structure with openings on the upper bottom surface and the lower bottom surface;

a clamping button 6 is arranged on the tamper needle 3; the two sides of the shell of the handle 1 are provided with clamping holes 5 which are matched with the clamping buttons 6 for clamping.

The head of the tamper needle 3 is curved, the tail of the tamper needle 3 is provided with a handle 8, and the clamping button 6 is connected with the tamper needle 3 through a spring 7.

Chucking button 6 be close to that one end of handle 1 and personally submit the sphere, chucking button 6 can slide along 1 shells inner wall of handle, the bore of card hole 5 is greater than the diameter of chucking button 6, chucking button 6 and card hole 5 realize the buckle and connect.

The holing needle 2 is welded and fixed on the lower bottom surface of the handle 1, the holing needle 2 is of a fusiform structure, penetrates into a frog body to expand a needle hole, and provides sufficient activity space for the smashing needle 3.

The stopper 4 is welded and fixed on the lower bottom surface of the handle 1, a connecting plate 10 is welded at the opening of the lower bottom surface of the handle 1, and the perforating needle 2 is welded on the connecting plate 10 and divides the upper bottom surface and the lower bottom surface of the stopper 4 into two tamping cavities 9.

The circle center of the stopper 4, the center of the lower bottom surface of the handle 1 and the center of the upper bottom surface of the hole-forming needle 2 are overlapped.

The utility model has the advantages that:

the thorn frog needle is equipped with two and smashes the needle on the handle, the utility model discloses an adjust the chucking button and realize the buckle with the card hole of co-altitude not and be connected, conveniently adjust the starting and taking in of smashing the needle syringe needle, realize that the thorn frog needle only pierces the frog once internally, can smash the demand that the brain tissue can smash the spinal cord tissue again. The problem of when having solved the student and having tamped the spinal cord tissue for the second time, be difficult to find the pinhole of pricking for the first time, both improved experimental efficiency, saved the operating procedure of experiment again.

The trompil needle designs for fusiformis structure, pierces and to provide the pinhole of expansion for the needle of smashing in the baby.

Drawings

Fig. 1 is an overall schematic view of the present invention.

Fig. 2 is a half sectional view of the present invention.

Fig. 3 is a schematic view of the working state of one side tamper needle of the present invention.

Fig. 4 is a schematic structural view of the other side tamper needle storage state of the present invention.

Fig. 5 is a partial sectional view a-a of fig. 1.

Fig. 6 is a schematic structural view of the stopper of the present invention.

FIG. 7 is a schematic diagram of the experimental procedure.

Wherein: the hand-operated hole-breaking device comprises a handle 1, a hole-breaking needle 2, a tamping needle 3, a stopper 4, a hole 5, a clamping button 6, a spring 7, a handle 8, a tamping cavity 9 and a connecting plate 10.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1-6, an adjustable multi-head rana spinosa needle in the present invention includes a handle 1, a hole opening needle 2, a tamper needle 3, a stopper 4, a locking hole 5, a locking button 6, a spring 7, a handle 8, a tamper cavity 9, and a connecting plate 10.

As shown in fig. 1, the handle 1 is a hollow shell structure, and an opening is opened on the lower bottom surface of the handle 1.

Connecting plate 10 welded fastening is at the opening part of bottom surface under handle 1, and trompil needle 2 welded fastening is on connecting plate 10, and trompil needle 2 is fusiformis structure, and what this fusiformis structure can be better provides the pinhole of expansion for the tamper needle, the activity of convenient tamper needle.

The stopper 4 is welded and fixed on the edge of the opening of the lower bottom surface of the handle 1, the outside of the stopper 4 is of a cylindrical structure with an upper bottom surface and a lower bottom surface provided with openings, and the stopper 4 is divided into two smashing cavities 9 by the perforating needle 2 and the connecting plate 10.

For better smashing operation, the needle head of the smashing needle 3 is designed to be bent, and the specific bending angle is 30 degrees. The tail of the tamper needle 3 is provided with a handle 8 to reduce the pressure of the tail of the tamper needle 3 to hands in the tamper experiment, and the operation is convenient. The tamper needle 3 runs through the upper bottom surface and the lower bottom surface of the handle 1 and extends to the outside of the stopper 4, and the needle head of the tamper needle 3 is positioned at the outer side of the hole opening needle 2.

The needle bar of the tamper needle 3 is provided with a clamping button 6, the clamping button 6 is connected with the tamper needle 3 through a spring 7, in order to reduce sliding friction resistance, the end face of the clamping button 6 close to the handle 1 shell is designed to be spherical, and the clamping button 6 can slide along the inner wall of the shell of the hand 1.

Two card holes 5 about respectively having seted up in the both sides of 1 casing of handle, card hole 5 and the cooperation of chucking button 6 joint, the distance between two card holes 5 of homonymy is the same with the distance that 3 crooked syringe needles of the needle of smashing get into the frog internal, and the card hole bore is greater than the diameter of chucking button 6.

The utility model is changed from the general state of figure 1 to the working state shown in figures 3 and 4,

the first holing needle 2 is inserted into the frog body under the action of the handle 1. The holing needle 2 is in a shuttle-shaped structure, and after the needle head of the holing needle 2 is pierced, the bulging part of the needle rod can expand the needle hole.

Along with the holing needle 2 is completely penetrated into the frog body, the clamping button 6 of the brain tissue side smashing needle 3 is pressed, and under the action of the spring 7, the clamping button 6 is abutted against the inner wall of the shell of the handle 1. The handle 8 of the brain tissue side tamper needle 3 is pushed, and the clamping button 6 slides downwards along the inner wall of the handle 1 under the driving of the tamper needle 3. When the clamping button 6 slides to the clamping hole 5 at the lower part of the side of the handle 1, the clamping button 6 is in clamping connection with the clamping hole 5 at the lower part of the side under the action of the elastic force of the spring 7, the position of the tamper needle 3 is fixed, and the tamper needle 3 at the side enters the frog body.

Then, the brain tissue is destroyed by holding the handle 8 of the brain tissue side destruction needle 3 and stirring. As shown in fig. 5 and 6, the tamper needle 3 is movable in the area of the tamper cavity 9 of the side barrier 4 to perform an operation of destroying brain tissue. After the operation of smashing is accomplished, press the chucking button 6 of brain tissue side tamping needle 3, it is internal with the frog is pulled out to the tamping needle 3 through handle 8, and chucking button 6 upwards slides along 1 inner wall of handle under the drive of tamping needle 3. When chucking button 6 slides to the top card hole 5 of this side of handle 1, chucking button 6 realizes the buckle with this side top card hole 5 and is connected under the spring action of spring 7, and the position of fixed tamper needle 3 accomodates this side tamper needle 3.

And carrying out a frog experiment step, finally smashing the spinal cord tissue of the frog, pressing a clamping button 6 of the spinal cord tissue side smashing needle 3, and enabling the clamping button 6 to abut against the inner wall of the shell of the handle 1 under the action of a spring 7. Promote the handle 8 of the spinal cord tissue side tamper needle 3, the chucking button 6 slides downwards along the inner wall of the handle 1 under the drive of the tamper needle 3. When the clamping button 6 slides to the clamping hole 5 at the lower part of the side of the handle 1, the clamping button 6 is in clamping connection with the clamping hole 5 at the lower part of the side under the action of the elastic force of the spring 7, the position of the tamper needle 3 is fixed, and the tamper needle 3 at the side enters the frog body.

Then, the operation of destroying the spinal cord tissue is carried out, and the spinal cord tissue is destroyed by stirring with the handle 8 of the spinal cord tissue side destroying needle 3. As shown in fig. 5 and 6, the tamper needle 3 can move in the area of the tamper cavity 9 of the side barrier 4 to perform the operation of destroying the spinal tissue. After the operation of smashing is accomplished, press the chucking button 6 of spinal cord tissue side tamping needle 3, it is internal with the frog is pulled out to smash needle 3 through handle 8, chucking button 6 upwards slides along 1 inner wall of handle under the drive of tamping needle 3. When chucking button 6 slides to the top card hole 5 of this side of handle 1, chucking button 6 realizes the buckle with this side top card hole 5 and is connected under the spring action of spring 7, and the position of fixed tamper needle 3 accomodates this side tamper needle 3. And finally, completing the experiment.

As shown in fig. 7: taking the preparation of the specimen of the sciatic nerve and gastrocnemius of frog as an example, the specific process of the experiment is as follows:

1. the frog is held with one hand and the back is upward. Pressing the back of frog or Bufo siccus with thumb, and pressing the front end of head with forefinger to make the head end sag downwards; the other hand-held marrow destroying needle is touched and scratched backwards along the midline between the two eyes, and when the needle touches the depression in the middle of the two ears (the line between the needle and the two eyes forms an equilateral triangle), the needle is held by the hand to feel that the needle point is sunken, and the position is the position of the large hole of the occiput.

2. The damaged intramedullary pin vertically stabs into the macropores of the occiput from the concave. Then the needle point is pricked forward to the cranial cavity, and brain tissue is crushed in the cranial cavity by stirring. If the marrow-destroying needle is in the cranial cavity, the experimenter can feel that the needle tip touches the skull. The animals at this time were single spoiled animals.

3. The needle point turns to the back and pierces the human vertebral canal parallel to the spinal column to destroy the spinal cord. When the spinal cord is completely destroyed, the hind limbs of the animal are suddenly straightened and then paralyzed to be soft like cotton, and the animal is a double-marrow-destroyed animal.

4. Peeling hind limb specimen, and placing the animal with double-damaged marrow into wax tray. The skin above the pubic symphysis is gently lifted by holding the forceps with one hand, and the skin is transversely cut open with the surgical scissors with the other hand, and then the muscle of the body wall is cut open (the opening is larger). The viscera were then gently lifted with forceps and cut from the pubic region (without damaging the spinal nerves). The hind limbs of the toad are slightly held up by one hand, the head and internal organs are downward, the part of the dorsal nerve which innervates the hind limbs is clearly seen, and the spine is transversely cut off by a golden crown scissors in front of the part. Then the body wall is cut off from the two sides of the spine to the transverse incision, one hand pinches the rear end of the broken spine with the thumb and the forefinger which are dipped with the wilson's fluid, the other hand tears the skin backwards and removes limbs and viscera above the broken spine. If the skin of the lower limb is difficult to tear, the skin can be torn off after the middle of the two strands is hooked by hands when the skin is torn off to the thigh part. And (5) placing the peeled hind limbs in the ren-ren's liquid for later use.

5. The ventral surface of the peeled hind limb is upwards placed on a glass plate by separating two hind limbs, the spinal column end is arranged at the left side, muscles at two sides of the thigh of the specimen are fixed by the left hand, the scalpel is held by the right hand, the cutting edge is downwards pressed at the pubic symphysis, and the pubic symphysis is incised. Then, the specimen was held by hand, the muscular tissue connecting the two hind limbs was cut by crown scissors, and the spine was cut in the longitudinal direction (the tail shaft bone was left on one side) to completely separate the two hind limbs. One of the divided hind limbs is continuously stripped, and the other is put into the wilson fluid for standby.

6. The sciatic nerve is separated, the ventral end of the vertebral column of one hind limb is upwards, the toe end is outwards turned, the sole of the hind limb is upwards, and the sample is fixed on the frog board by a fixing needle. The sciatic nerve was separated posteriorly along the spinal nerve with a glass needle. The femoral region is located along the muscular cleft between the biceps femoris muscle and the semimembranosus muscle just in front of the gastrocnemius muscle to find the sciatic nerve. The sciatic nerve is covered by piriformis at the base (the part connected with the spinal nerve) and the muscle is slightly raised by a glass needle, so that the sciatic nerve running below the nerve can be seen clearly. The piriformis is cut (or torn off with a glass needle) to completely expose the sciatic nerve and the spinal nerve to which it is attached. The nerve was gently lifted by using a glass needle, and the branches of the nerve other than the branch innervating gastrocnemius were excised from the anterior to the posterior, and the sciatic nerve was separated to the popliteal fossa. The fixing needle at the end of the spinal column is taken down, a small piece of spinal bone at the nerve emitting part is reserved, and the rest part of spinal bone and muscle are cut off by the golden crown scissors. Gently lift the spinal bone fragments connected with the nerves by using surgical forceps to remove the nerves from the femur.

7. The gastrocnemius muscle was released, the toe end was grasped with one hand, and the other hand was threaded under the gastrocnemius achilles tendon with surgical forceps (tip forceps) and tightened with a ligature. The knot line is lifted to free the gastrocnemius muscle.

8. If the animal used is small, the femoral head can be separated. The method comprises the following steps: pinching the femur with one hand, cutting off the muscles around the femur along the knee joint, scraping off the muscles on the femur from the knee joint forwards with a crown scissors, keeping the femoral head of 1.5cm, and cutting off the femur. The ligature on the gastrocnemius is lifted, the hind limb at the lower part of the knee joint is cut off, and only the connection between the gastrocnemius and the femur is reserved. If the animal is large, the tibiofibular head can be detached. The method is simple and easy to operate. That is, on the basis of the separated gastrocnemius muscle, the gastrocnemius muscle was removed, the muscle on the tibiofibula was cut off with a crown scissors, the tibiofibula 1.5cm long was left from below the knee joint and the hind limb was cut off, and then the femur was cut off from the knee joint. Preparing an intact sciatic nerve-neck enteron muscle specimen should include: the four parts of the spine, the sciatic nerve, the gastrocnemius, the femoral head or the tibiofibular bone are connected with the sciatic nerve.

9. The specimen is inspected, and the spinal bone fragments of the specimen are lifted gently by using surgical forceps, so that the nerves leave the glass plate. And dipping the wet zinc-copper arch with the wilson's fluid, and contacting the two poles of the bow with nerves, wherein if gastrocnemius muscle contracts rapidly, the specimen functions normally. The ligature on the gastrocnemius is lifted up, the nerve is not pulled, and the specimen is gently placed into the wilson's fluid for preservation. The experiment can be carried out after the stability is 15-20 min.

Claims

1. The utility model provides a mobilizable bull thorn frog needle, a serial communication port, including handle (1) and trompil needle (2), trompil needle (2) set up bottom surface under handle (1), the opening has been seted up to bottom surface under handle (1), bottom surface open-ended edge sets up stopper (4) under handle (1), it is provided with two damage needles (3) to run through on handle (1), two damage needles (3) extend to the outside of stopper (4), and the syringe needle of two damage needles (3) is located the outside of trompil needle (2), and the top is surrounded by stopper (4) on trompil needle (2), form between trompil needle (2) and stopper (4) and destroy the hole.

2. A movable multi-head rana spinosa needle as claimed in claim 1, wherein the tamper needle (3) is provided with a clamping button (6); the two sides of the shell of the handle (1) are provided with clamping holes (5) which are matched with the clamping buttons (6) for clamping.

3. A movable multi-head rana spinosa needle as claimed in claim 1, wherein the head of the tamper needle (3) is curved, the tail of the tamper needle (3) is provided with a handle (8), and the clamping button (6) and the tamper needle (3) are connected through a spring (7).

4. A movable multi-head rana spinosa needle as claimed in claim 3, wherein the end of the clamping button (6) close to the handle (1) is spherical, the clamping button (6) can slide along the inner wall of the shell of the handle (1), the caliber of the clamping hole (5) is larger than the diameter of the clamping button (6), and the clamping button (6) and the clamping hole (5) realize a snap-fit connection.

5. A movable multi-head rana spinosa needle as claimed in claim 1, wherein the holing needle (2) is welded and fixed on the lower bottom surface of the handle (1), and the holing needle (2) is of a shuttle-shaped structure.

6. A movable multi-head rana spinosa needle as claimed in claim 1, wherein the stopper (4) is welded and fixed on the lower bottom surface of the handle (1), a connecting plate (10) is welded at the opening of the lower bottom surface of the handle (1), and the holing needle (2) is welded on the connecting plate (10) and divides the stopper (4) between the upper bottom surface and the lower bottom surface into two smashing cavities (9).

7. A movable multi-head rana spinosa needle as claimed in claim 1, wherein the center of the circle of the stopper (4), the center of the lower bottom surface of the handle (1) and the center of the upper bottom surface of the tapping needle (2) coincide.

8. A movable froglet needle as claimed in claim 1, characterised in that said handle (1) is of hollow shell construction.

9. A movable multi-head rana spinosa needle as claimed in claim 1, wherein the stopper (4) is a cylindrical structure with openings on both the upper and lower bottom surfaces.