CN216090920U

CN216090920U - Dart needle head for animal experiment induction anesthesia

Info

Publication number: CN216090920U
Application number: CN202122486189.8U
Authority: CN
Inventors: 张飞飞; 刘保; 李小霞; 王建锋; 王跃涛
Original assignee: First Peoples Hospital of Changzhou
Current assignee: First Peoples Hospital of Changzhou
Priority date: 2021-10-15
Filing date: 2021-10-15
Publication date: 2022-03-22
Anticipated expiration: 2031-10-15

Abstract

The utility model discloses a dart needle for inducing anesthesia in animal experiments, which comprises a medicine storage cylinder and a pressure pipe, wherein a piston is arranged in the medicine storage cylinder in a sliding manner, the top of the piston is fixedly connected with a pull rod, the inner wall of the medicine storage cylinder is fixedly connected with a limiting ring body, the lower end of the pull rod is sleeved with a spring, the upper end of the pull rod is fixedly connected with an L-shaped elastic sheet, the inner wall of the medicine storage cylinder is provided with a clamping groove, the inner part of the clamping groove is fixedly connected with an arc-shaped elastic sheet, one side of the arc-shaped elastic sheet is fixedly connected with a pressing sheet, non-contact injection is realized through the mutual matching among the L-shaped elastic sheet, the arc-shaped elastic sheet, the pressing sheet, the clamping groove and the pressure pipe, the potential safety hazard of injection personnel is reduced, the pressure pipe can extrude the arc-shaped elastic sheet only after an injection head is inserted into an animal body to a certain depth, the liquid medicine is automatically and rapidly injected into the animal body, and the phenomenon that the injection head cannot be inserted into the animal body to start the injection is avoided due to inertia, avoiding the waste of the liquid medicine.

Description

Dart needle head for animal experiment induction anesthesia

Technical Field

The utility model relates to the technical field of medical instruments, in particular to a dart needle for animal experiment induction anesthesia.

Background

In large animal (such as pig, dog, monkey, etc.) experiments, most experimental operations need to be completed under anesthesia. Firstly, the induction of anesthesia is needed, namely, a certain amount of anesthetic is injected into an animal body through muscle injection, and the animal body is firstly numbed, so that a venous channel can be further established, and further the anesthesia is maintained. At present, a common needle is generally used to connect a long soft needle tube and an injector in practice, the needle is inserted into the hip muscle of a large animal by finding a chance, and then the needle is pulled out after the injection. However, the operation method has problems at present: 1. the needles are difficult to insert into animal muscles, and can avoid the needles to the utmost extent, so that the needles are difficult to insert due to movement; 2. because the skin of the large animal is thick, the needle head can be bent after being tried for several times, cannot be inserted and only needs to be replaced; 3. even if the animal is inserted, the animal can move and scratch after being stimulated by the needle stick in the injection process, and then the needle head is thrown out, so that the anesthesia fails and the animal can be recovered; and in the process of injection, great potential safety hazard is also caused to injection personnel.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a dart needle for inducing anesthesia in animal experiments, which solves the problems of the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: a dart needle head for inducing anesthesia in animal experiments comprises a medicine storage cylinder and a pressing pipe, wherein a piston is slidably mounted in the medicine storage cylinder, the top of the piston is fixedly connected with a pull rod, the inner wall of the medicine storage cylinder is fixedly connected with a limiting ring body, the lower end of the pull rod is sleeved with a spring, the top of the spring abuts against the bottom of the limiting ring body, the bottom of the spring presses the top of the piston, the upper end of the pull rod is fixedly connected with an L-shaped elastic sheet, the inner wall of the medicine storage cylinder is provided with a clamping groove, the inside of the clamping groove is fixedly connected with an arc-shaped elastic sheet, one side of the arc-shaped elastic sheet is fixedly connected with a pressing sheet, and the upper end of the L-shaped elastic sheet is clamped in the clamping groove;

an annular inner cavity is formed in the medicine storage barrel, an annular slot is formed in the bottom of the medicine storage barrel and communicated with the annular inner cavity, the upper end of the pressure pipe penetrates through the annular slot and extends into the annular inner cavity, a first annular limiting block is fixedly connected to the top of the pressure pipe, and the side face of the first annular limiting block is in contact with the inner wall of the annular inner cavity;

the bottom of the medicine storage barrel is communicated with a medicine outlet pipe, and an injection head is detachably mounted on an upper shell of the medicine outlet pipe.

Through adopting above-mentioned technical scheme, during the use, in the pulling pull rod sucks the drug storage cylinder with the liquid medicine, then continue the pulling pull rod, the spring receives the extrusion this moment, the upper end joint of L shape shell fragment is in the draw-in groove, then throw the drug storage cylinder, insert the internal back of animal when the injection head, press the pipe and receive the extrusion, and then press the upper end extrusion arc shell fragment of pipe, the cooperation preforming is with the inside of the ejecting draw-in groove in upper end of L shape shell fragment, drive the piston downstream under the effect of spring elastic force this moment, and then inject the internal of animal with the liquid medicine in the drug storage cylinder.

Preferably, the top of the inner wall of the pressure pipe is provided with an arc-shaped notch.

Through adopting above-mentioned technical scheme for press the pipe more smooth and easy when the extrusion arc shell fragment.

Preferably, a circular plate is fixedly connected to the top of the pull rod.

By adopting the technical scheme, the liquid medicine is convenient to suck.

Preferably, the outer wall of the lower end of the pressure pipe is fixedly connected with a second annular limiting block, and the second annular limiting block is arranged inside the annular inner cavity in a sliding mode.

Through adopting above-mentioned technical scheme, avoid pressing the pipe from the inside of annular inner chamber to break away from length too big.

Preferably, the outer wall of the upper end of the medicine storage cylinder is provided with anti-skid grains.

Through adopting above-mentioned technical scheme, avoid appearing the phenomenon that the hand slided when holding storage cartridge case.

Preferably, the surface of the spring is coated with an epoxy polyester corrosion-resistant coating.

Through adopting above-mentioned technical scheme, improve the life of spring.

Compared with the prior art, the utility model has the beneficial effects that:

realize contactless injection through L shape shell fragment, arc shell fragment, preforming, draw-in groove and press mutually supporting between the pipe, reduced injection personnel's potential safety hazard, only insert the internal certain degree of depth of animal when the injection head moreover, press the pipe just can extrude the arc shell fragment, with the automatic quick animal of injecting of liquid medicine internal, avoid because of inertia reason, the injection head can not insert the internal phenomenon to beginning the injection of animal probably appear, avoid the waste of liquid medicine.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic diagram of the spring of the present invention;

FIG. 3 is an enlarged view of portion A of FIG. 2;

fig. 4 is a schematic cross-sectional view of the cartridge of the present invention.

In the figure: 1. a cartridge; 2. pressing a pipe; 3. an injection head; 4. a pull rod; 5. a circular plate; 6. an annular inner cavity; 7. an L-shaped spring plate; 8. a limiting ring body; 9. a spring; 10. a piston; 11. a second annular limiting block; 12. a medicine outlet pipe; 13. a card slot; 14. an arc-shaped elastic sheet; 15. tabletting; 16. an arc-shaped notch; 17. anti-skid lines; 18. an annular slot; 19. the first annular stopper.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution:

a dart needle for animal experiment induction anesthesia comprises a storage cylinder 1 and a pressing pipe 2;

wherein, a piston 10 is slidably arranged in the drug storage cylinder 1, the top of the piston 10 is fixedly connected with a pull rod 4, the upper end of the pull rod 4 is fixedly connected with an L-shaped elastic sheet 7, and a circular plate 5 is fixedly connected to the top of the pull rod 4 for facilitating the absorption of the drug liquid;

wherein, the inner wall of the cartridge case 1 is fixedly connected with a limit ring body 8, the lower end of the pull rod 4 is sleeved with a spring 9, in order to prolong the service life of the spring 9, the surface of the spring 9 is coated with an epoxy polyester anti-corrosion coating, the top of the spring 9 is propped against the bottom of the limit ring body 8, and the bottom of the spring 9 is pressed on the top of the piston 10;

the inner part of the medicine storage barrel 1 is provided with an annular inner cavity 6, the bottom of the medicine storage barrel 1 is provided with an annular slot 18, the annular slot 18 is communicated with the annular inner cavity 6, the upper end of the pressing pipe 2 penetrates through the annular slot 18 and extends into the inner part of the annular inner cavity 6, the top of the pressing pipe 2 is fixedly connected with a first annular limiting block 19, and the side surface of the first annular limiting block 19 is in contact with the inner wall of the annular inner cavity 6;

in order to avoid that the separation length of the pressure pipe 2 from the interior of the annular inner cavity 6 is too large, a second annular limiting block 11 is fixedly connected to the outer wall of the lower end of the pressure pipe 2, and the second annular limiting block 11 is arranged in the annular inner cavity 6 in a sliding mode;

the inner wall of the medicine storage barrel 1 is provided with a clamping groove 13, an arc-shaped elastic sheet 14 is fixedly connected inside the clamping groove 13, a pressing sheet 15 is fixedly connected to one side of the arc-shaped elastic sheet 14, and the upper end of the L-shaped elastic sheet 7 is clamped inside the clamping groove 13;

in order to make the pressing pipe 2 smoother when the arc-shaped elastic sheet 14 is pressed, an arc-shaped notch 16 is formed at the top of the inner wall of the pressing pipe 2;

wherein, the bottom intercommunication of storage cartridge case 1 has out pencil 12, goes out pencil 12 epitheca and dismantles and install injection head 3, in order to avoid appearing the phenomenon of hand cunning when holding storage cartridge case 1, has seted up anti-skidding line 17 at storage cartridge case 1's upper end outer wall.

According to the technical scheme, the working steps of the scheme are summarized and carded:

during the use, in the medicine storage cylinder 1 is sucked with the liquid medicine to pulling pull rod 4, then continue pulling pull rod 4, spring 9 received the extrusion this moment, the upper end joint of L shape shell fragment 7 is in draw-in groove 13, then throw storage cylinder 1, insert the internal back of animal when injection head 3, press pipe 2 to receive the extrusion, and then press the upper end extrusion arc shell fragment 14 of pipe 2, the inside of the ejecting draw-in groove 13 in upper end of L shape shell fragment 7 is pressed to cooperation preforming 15, drive piston 10 downstream under the effect of spring 9 elasticity this moment, and then inject the liquid medicine in the storage cylinder 1 into the animal internally.

The parts not involved in the present invention are the same as or can be implemented by the prior art. Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A dart needle for animal experiment induction anesthesia is characterized by comprising: a medicine storage barrel (1) and a pressure pipe (2), wherein a piston (10) is arranged in the medicine storage barrel (1) in a sliding manner, the top of the piston (10) is fixedly connected with a pull rod (4), the inner wall of the medicine storage cylinder (1) is fixedly connected with a limiting ring body (8), the lower end of the pull rod (4) is sleeved with a spring (9), the top of the spring (9) is propped against the bottom of the limiting ring body (8), the bottom of the spring (9) is pressed on the top of the piston (10), the upper end of the pull rod (4) is fixedly connected with an L-shaped elastic sheet (7), a clamping groove (13) is formed in the inner wall of the medicine storage barrel (1), an arc-shaped elastic sheet (14) is fixedly connected inside the clamping groove (13), one side of the arc-shaped elastic sheet (14) is fixedly connected with a pressing sheet (15), and the upper end of the L-shaped elastic sheet (7) is clamped in the clamping groove (13);

an annular inner cavity (6) is formed in the medicine storage barrel (1), an annular inserting groove (18) is formed in the bottom of the medicine storage barrel (1), the annular inserting groove (18) is communicated with the annular inner cavity (6), the upper end of the pressing pipe (2) penetrates through the annular inserting groove (18) and extends into the annular inner cavity (6), a first annular limiting block (19) is fixedly connected to the top of the pressing pipe (2), and the side face of the first annular limiting block (19) is in contact with the inner wall of the annular inner cavity (6);

the bottom of the medicine storage barrel (1) is communicated with a medicine outlet pipe (12), and an injection head (3) is detachably mounted on the upper shell of the medicine outlet pipe (12).

2. The dart needle for animal experiment induction anesthesia, according to claim 1, characterized in that: an arc-shaped notch (16) is formed in the top of the inner wall of the pressure pipe (2).

3. The dart needle for animal experiment induction anesthesia, according to claim 1, characterized in that: the top of the pull rod (4) is fixedly connected with a circular plate (5).

4. The dart needle for animal experiment induction anesthesia, according to claim 2, is characterized in that: the outer wall of the lower end of the pressure pipe (2) is fixedly connected with a second annular limiting block (11), and the second annular limiting block (11) is arranged inside the annular inner cavity (6) in a sliding mode.

5. The dart needle for animal experiment induction anesthesia, according to claim 1, characterized in that: the anti-skidding lines (17) are arranged on the outer wall of the upper end of the medicine storage barrel (1).

6. The dart needle for animal experiment induction anesthesia, according to claim 1, characterized in that: the surface of the spring (9) is coated with an epoxy polyester anti-corrosion coating.