CN110897754A - Rainbow trout attacks poisonous syringe for experiment - Google Patents
Rainbow trout attacks poisonous syringe for experiment Download PDFInfo
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- CN110897754A CN110897754A CN201911280974.9A CN201911280974A CN110897754A CN 110897754 A CN110897754 A CN 110897754A CN 201911280974 A CN201911280974 A CN 201911280974A CN 110897754 A CN110897754 A CN 110897754A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61D—VETERINARY INSTRUMENTS, IMPLEMENTS, TOOLS, OR METHODS
- A61D7/00—Devices or methods for introducing solid, liquid, or gaseous remedies or other materials into or onto the bodies of animals
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/20—Automatic syringes, e.g. with automatically actuated piston rod, with automatic needle injection, filling automatically
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/315—Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
- A61M5/3202—Devices for protection of the needle before use, e.g. caps
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
- A61M5/3293—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles characterised by features of the needle hub
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
- A61M5/3295—Multiple needle devices, e.g. a plurality of needles arranged coaxially or in parallel
- A61M5/3298—Needles arranged in parallel
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
- A61M5/34—Constructions for connecting the needle, e.g. to syringe nozzle or needle hub
- A61M5/347—Constructions for connecting the needle, e.g. to syringe nozzle or needle hub rotatable, e.g. bayonet or screw
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/46—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests having means for controlling depth of insertion
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/20—Automatic syringes, e.g. with automatically actuated piston rod, with automatic needle injection, filling automatically
- A61M2005/2006—Having specific accessories
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Abstract
The invention relates to an injector for a rainbow trout challenge experiment, and belongs to the technical field of aquatic product challenge experiments. The invention provides an injector for a rainbow trout attacking experiment, which aims to solve the problem that the existing injector used in the attacking experiment is easy to cause deviation of attacking effect. The tail end of the hollow needle cylinder is also provided with a limiting structure for realizing the adjustment of the needle inserting depth of the injection needle. The injector adopts a dipping mode to wrap the offensive-toxic liquid on the outer surface of the injection needle, and realizes simultaneous multi-point penetration by a plurality of needle heads to ensure that the offensive-toxic liquid has better absorption effect; a microneedle with the diameter of 0.7-1.0 mm is adopted, the needle hole is fine after injection, and the toxic solution is not easy to seep out; further ensuring the toxicity attacking effect and the parallelism of the toxicity attacking experiment. The injector provided by the invention has high working efficiency and controllable needle insertion depth, and avoids secondary damage to the fish body; the needle head protection cover can also avoid causing accidental injury to workers.
Description
Technical Field
The invention belongs to the technical field of aquatic product challenge experiments, and particularly relates to an injector for a rainbow trout challenge experiment.
Background
The rainbow trout is a typical cold water fish, grows faster than other freshwater fishes, is popular among consumers worldwide due to high protein, no muscle bones and rich in unsaturated fatty acids such as EPA and DHA, and is also more and more popular among domestic consumers. In recent years, China develops the rainbow trout breeding industry rapidly, but along with the increase of breeding density and the deterioration of environment, the outbreak of viral diseases and bacterial diseases of rainbow trout is frequent. However, at present, no effective control method exists for viral diseases of the rainbow trout, and the control of bacterial diseases mainly depends on the use of antibiotics, so that the healthy culture of the rainbow trout is influenced, and the food safety problem of the rainbow trout is easily caused. Vaccine immunization is currently the first choice for viral and bacterial diseases of rainbow trout and the effect is widely proved. Besides vaccine design and preparation, immune effect evaluation is also an essential link in vaccine development and industrialization processes.
To confirm the effectiveness of the vaccine, challenge experiments must be performed. In order to ensure that the attacking liquid can smoothly enter the rainbow trout body so as to ensure the accuracy and the parallelism of the attacking experiment, the part of operation is mainly carried out manually. However, the needle of the common syringe used for injecting the toxin-attacking liquid in the existing toxin-attacking experiment is long, the needle depth is not easy to control, and if a fish struggles suddenly or the needle is too deep, the fish body is easy to stab, even the fish die, so that the vaccine protection result deviation is caused; if the needle is too shallow, the toxic liquid is easy to seep out along with the pulling of the needle, which affects the toxic effect.
Disclosure of Invention
In order to solve the problem that the existing syringe used in the attacking experiment is easy to cause deviation of attacking effect in the operation process, the invention provides the syringe for the attacking experiment of the rainbow trout.
The technical scheme of the invention is as follows:
the utility model provides an injector for rainbow trout attacks poison experiment, including hollow cylinder, can follow the push rod that the cylinder inner wall removed and push away the cap, hollow cylinder front end is connected with detachable injection unit, the injection unit both ends are equipped with base and syringe needle safety cover respectively, the hollow inner chamber that the injection unit was followed to the base removes, be equipped with two at least spaced apart arrangements on the base, be parallel to each other and the recess that link up, be equipped with the syringe needle hole that link up corresponding with the groove position on the syringe needle safety cover, the syringe needle tail end is fixed in the recess for the injection, the pinpoint end extends to syringe needle safety cover appearance by the syringe needle hole and becomes the syringe needle.
Furthermore, the outer side of the tube body at the base end of the detachable injection component is provided with a threaded cap, and the inner thread of the threaded cap is matched with the outer thread at the front end of the outer wall of the needle cylinder and used for realizing the connection of the injection component and the needle cylinder.
Furthermore, 6 grooves which are arranged at intervals, are parallel to each other and are communicated are arranged on the base, and 6 through needle holes corresponding to the positions of the grooves are arranged on the needle head protection cover.
Further, the injection needle is a solid needle having a conical needle tip or an M-shaped needle tip, or a general syringe needle.
Further, the diameter of the injection needle is 0.7-1.0 mm, the length of the whole needle is 10mm, and the length of the needle tip is 2 mm.
Furthermore, the tail end of the hollow needle cylinder is provided with a limiting structure for adjusting the needle inserting depth of the injection needle.
Further, limit structure is a rotary adjusting cylinder, and its front end has the opening, and the tail end has the through-hole, and rotary adjusting cylinder inner wall is equipped with the internal thread, matches with the external screw thread of cavity syringe outer wall tail end, and rotary adjusting cylinder passes through the cooperation realization of internal thread and external screw thread and is connected with the cavity syringe.
Furthermore, the tail end of the push rod is provided with scales, and the position of the rotary adjusting cylinder is fixed at the corresponding position on the scales to control the advancing distance of the push rod so as to control the needle inserting depth.
Further, the push rod is connected with an electric booster, and the electric booster is driven by a stepping motor to perform front and back linear motion, so that the push rod is pushed to perform automatic injection and reset.
The invention provides a use method of an injector for a rainbow trout challenge experiment, which comprises the following steps:
connecting the injection component with the needle cylinder through a threaded cap, wherein the injection needle is arranged in the needle head protective cover at the moment, the needle point is flush with the shell of the needle head protective cover, the push rod is reset to enable the front end of the push rod to be in contact with the base of the injection part, the position of the rotary adjusting cylinder at the tail end of the needle cylinder is adjusted according to the required injection depth, and the upper surface of the rotary adjusting cylinder corresponds to the corresponding scale position on the push rod; the injection part of the injector is immersed into the offensive liquid to finish dipping, the offensive liquid is wrapped on the outer surface of the injection needle, the injector is placed at the injection part of the rainbow trout, the push rod is pushed to further push the base in the injection part forward, so that the injection needle penetrates into the fish body, and the offensive operation is finished by pulling out the injection needle. And (3) immersing the injection part of the injector into the toxic liquid, and enabling the needle tip to abut against the bottom of the toxic liquid container to reset the needle tip and the push rod.
The invention has the beneficial effects that:
in the using process of the injector, the external surface of the injection needle is wrapped by the offensive liquid in a dipping manner, multiple needles are used for realizing simultaneous multi-point penetration, multiple parts are dispersed, and a small amount of offensive liquid is injected, so that the absorption effect of the offensive liquid is better, and the offensive effect and the parallelism of an offensive experiment can be ensured; the toxic substance counteracting liquid is remained in the fish body while the syringe provided by the invention is penetrated into the fish body, so that the injection process of the traditional syringe is omitted, and the efficiency of toxic substance counteracting operation is higher. The injector is also provided with a needle head protective cover, and the needle head is arranged in the protective cover before injection, so that the accidental injury to workers in the operation process can be avoided.
The injection component of the injector of the invention realizes the disassembly and the assembly through the threaded cap, has simple and convenient operation, and can realize the recovery and the secondary utilization of the needle cylinder and the push rod part. The invention adopts the micro-needle with the diameter of 0.7-1.0 mm, the residual needle eye of the injected fish body is small, and the toxic liquid is not easy to seep out along with the pulling-out of the needle head. The injector realizes the control of the push distance of the push rod through the limiting action of the rotary adjusting cylinder, thereby realizing the control of the needle insertion depth of the injector and avoiding the secondary damage to the fish body caused by over-deep injection.
The syringe for the rainbow trout challenge experiment provided by the invention has the advantages of simple structure, ingenious conception, simplicity and convenience in operation, accurate control of needle insertion depth, safety and high efficiency, and has higher practical application value.
Drawings
Fig. 1 is a schematic structural diagram of an experimental syringe for attacking toxin by rainbow trout provided in example 4;
FIG. 2 is a schematic view showing the distribution positions of injection needles of the syringe used in the rainbow trout challenge experiment provided in example 6;
in the figure: 1. a needle cylinder; 2. a push rod; 3. an injection component; 4. a base; 5. a needle head protecting cover; 6. a groove; 7. a needle bore; 8. a needle for injection; 9. a threaded cap; 10. rotating the adjusting cylinder; 11. calibration; 12. and (6) pushing the cap.
Detailed Description
The technical solutions of the present invention are further described below with reference to the following examples, but the present invention is not limited thereto, and any modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Example 1
The embodiment provides an injector for rainbow trout attacks poison experiments, including hollow cylinder 1, can follow 1 inner wall of cylinder and remove push rod 2 and push cap 12, 1 front end in hollow cylinder is connected with detachable injection unit 3, 3 both ends in injection unit are equipped with base 4 and syringe needle safety cover 5 respectively, base 4 can follow the hollow inner chamber removal of injection unit 3, be equipped with two at least spaced apart arrangements on the base 4, be parallel to each other and the recess 6 that link up, be equipped with on the syringe needle safety cover 5 with the corresponding syringe needle hole 7 that link up in recess 6 position of recess 6 position, 8 syringe needle tails ends are fixed in recess 6 for the injection, the needle point end extends to 5 appearances of syringe needle safety cover by syringe needle hole 7 and becomes the syringe needle that is suitable for the puncture.
The syringe that this embodiment provided adopts the mode of dipping in and getting to wrap up attacking poison liquid at the injection needle surface in the use to the multiple syringe needle realizes that the while multiple spot pierces, compares with single-end injection type syringe, and the same liquid volume of attacking is dispersed through many parts, is injected into a small amount and can make the absorption effect of attacking the poison liquid better, guarantees to attack the poison effect. And a small amount of toxic attacking liquid is injected into each penetrating point, so that the toxic attacking liquid is difficult to seep out, and the parallelism of an attacking experiment can be ensured.
The syringe that this embodiment provided will attack the poison liquid and stay in the fish body when stabbing the fish body, has saved the process that traditional syringe injected, and the efficiency of attacking the poison operation is higher. The needle head is arranged in the needle head protective cover before injection, so that accidental injury to workers in the operation process can be avoided.
Example 2
The utility model provides an injector for rainbow trout attacks poison experiment, including hollow cylinder 1, can follow the push rod 2 that 1 inner wall of cylinder removed and push away cap 12, 1 front end in hollow cylinder is connected with detachable injection unit 3, 3 both ends of injection unit are equipped with base 4 and syringe needle safety cover 5 respectively, the hollow inner chamber that injection unit 3 can be followed to base 4 removes, be equipped with two at least spaced apart arrangements on base 4, be parallel to each other and the recess 6 that link up, be equipped with on the syringe needle safety cover 5 with the corresponding syringe needle hole 7 that link up in recess 6 position, 8 syringe needle tail ends are fixed in recess 6 for the injection, the pinpoint end extends to 5 appearances of syringe needle safety cover by syringe needle hole 7 and becomes the syringe needle that is suitable for.
The outside of the tube body at the base end of the detachable injection component 3 in the embodiment is provided with a thread cap 9, and the internal thread of the thread cap 9 is matched with the external thread at the front end of the outer wall of the needle cylinder 1, so that the injection component 3 is connected with the needle cylinder 1.
The injection part in the embodiment is detached and installed through the threaded cap, the operation is simple and convenient, the injection part is convenient to replace, and meanwhile, the recovery and secondary utilization of the needle cylinder and the push rod part can be realized.
Example 3
An injector for a rainbow trout challenge experiment comprises a hollow needle cylinder 1, a push rod 2 and a push cap 12, wherein the push rod 2 can move along the inner wall of the needle cylinder 1, the front end of the hollow needle cylinder 1 is connected with a detachable injection part 3, the outer side of the base end of the detachable injection part 3 is provided with a threaded cap 9, and the internal thread of the threaded cap 9 is matched with the external thread at the front end of the outer wall of the needle cylinder 1 and is used for realizing the connection of the injection part 3 and the needle cylinder 1; the two ends of the injection component 3 are respectively provided with a base 4 and a needle head protection cover 5, the base 4 can move along the hollow inner cavity of the injection component 3, the base 4 is provided with 3 grooves 6 which are arranged at intervals, are parallel to each other and are communicated, the needle head protection cover 5 is provided with 3 needle head holes 7 which are communicated with the grooves 6 correspondingly, the tail end of an injection needle 8 is fixed in the grooves 6, and the tip end of the injection needle extends to the outside of the needle head protection cover 5 through the needle head holes 7 to form a needle head suitable for puncture.
The injection needle 8 used in this example was a solid needle having a conical tip with a diameter of 0.7 to 1.0mm, a total needle length of 10mm and a tip length of 2 mm. The microneedle with the diameter of 0.7-1.0 mm is used as the injection needle, the residual needle eye of the injected fish body is small, the toxic liquid is not easy to seep out along with the extraction of the needle head, the parallelism of the toxic experiment can be ensured, and the deviation of the vaccine protection result is avoided.
Example 4
An injector for a rainbow trout challenge experiment comprises a hollow needle cylinder 1, a push rod 2 and a push cap 12, wherein the push rod 2 can move along the inner wall of the needle cylinder 1, the front end of the hollow needle cylinder 1 is connected with a detachable injection part 3, the outer side of the base end of the detachable injection part 3 is provided with a threaded cap 9, and the internal thread of the threaded cap 9 is matched with the external thread at the front end of the outer wall of the needle cylinder 1 and is used for realizing the connection of the injection part 3 and the needle cylinder 1; the two ends of the injection component 3 are respectively provided with a base 4 and a needle head protection cover 5, the base 4 can move along the hollow inner cavity of the injection component 3, the base 4 is provided with 4 grooves 6 which are arranged at intervals, are parallel to each other and are communicated, the needle head protection cover 5 is provided with 4 needle head holes 7 which are communicated with the grooves 6 correspondingly, the tail end of an injection needle 8 is fixed in the grooves 6, and the tip end of the injection needle extends to the outside of the needle head protection cover 5 through the needle head holes 7 to form a needle head suitable for puncture.
The injection needle 8 used in this example was a solid needle having an M-shaped tip with a diameter of 0.7mm, a full needle length of 10mm and a tip length of 2 mm. More offensive liquid can be absorbed and stored between the two needle points of the M-shaped needle point due to the siphon effect, and the fish poison sucking device is suitable for fishes with larger body sizes.
Example 5
An injector for a rainbow trout challenge experiment comprises a hollow needle cylinder 1, a push rod 2 and a push cap 12, wherein the push rod 2 can move along the inner wall of the needle cylinder 1, the front end of the hollow needle cylinder 1 is connected with a detachable injection part 3, the outer side of the base end of the detachable injection part 3 is provided with a threaded cap 9, and the internal thread of the threaded cap 9 is matched with the external thread at the front end of the outer wall of the needle cylinder 1 and is used for realizing the connection of the injection part 3 and the needle cylinder 1; the two ends of the injection component 3 are respectively provided with a base 4 and a needle head protection cover 5, the base 4 can move along the hollow inner cavity of the injection component 3, the base 4 is provided with 5 grooves 6 which are arranged at intervals, parallel to each other and communicated, the needle head protection cover 5 is provided with 5 needle head holes 7 which are communicated with the grooves 6 correspondingly, the tail end of an injection needle 8 is fixed in the grooves 6, and the tip end of the injection needle extends to the outside of the needle head protection cover 5 through the needle head holes 7 to form a needle head suitable for puncture.
The injection needle 8 used in this example was a conventional syringe needle having a diameter of 0.7mm and a length of 10 mm.
Example 6
An injector for a rainbow trout challenge experiment comprises a hollow needle cylinder 1, a push rod 2 and a push cap 12, wherein the push rod 2 can move along the inner wall of the needle cylinder 1, the front end of the hollow needle cylinder 1 is connected with a detachable injection part 3, the outer side of the base end of the detachable injection part 3 is provided with a threaded cap 9, and the internal thread of the threaded cap 9 is matched with the external thread at the front end of the outer wall of the needle cylinder 1 and is used for realizing the connection of the injection part 3 and the needle cylinder 1; the two ends of the injection component 3 are respectively provided with a base 4 and a needle head protection cover 5, the base 4 can move along the hollow inner cavity of the injection component 3, 6 grooves 6 which are arranged at intervals, parallel to each other and communicated are arranged on the base 4, 6 needle head holes 7 which are communicated with the grooves 6 correspondingly are arranged on the needle head protection cover 5, the tail end of an injection needle 8 is fixed in the groove 6, and the tip end of the injection needle extends to the outside of the needle head protection cover 5 through the needle head holes 7 to form a needle head suitable for puncture.
The injection needle 8 used in this example was a solid needle having a conical tip with a diameter of 0.7mm and a length of 10 mm.
In the embodiment, the tail end of the hollow needle cylinder 1 is provided with a limiting structure for adjusting the needle inserting depth of the injection needle 8. The limit structure is a rotary adjusting cylinder 10, the front end of the rotary adjusting cylinder is provided with an opening, the tail end of the rotary adjusting cylinder is provided with a through hole, the inner wall of the rotary adjusting cylinder 10 is provided with an internal thread which is matched with the external thread at the tail end of the outer wall of the hollow needle cylinder 1, and the rotary adjusting cylinder 10 is connected with the hollow needle cylinder 1 through the matching of the internal thread and the external thread. Meanwhile, the tail end of the push rod 2 extends out of the needle cylinder 1 and is provided with a scale 11, the rotary adjusting cylinder 10 is screwed to the bottom along the thread to be completely sleeved at the tail part of the needle cylinder 1, the outer surface of the rotary adjusting cylinder is aligned with 9 on the scale 11 and is the initial position of the rotary adjusting cylinder, the needle insertion depth of the injector is displayed to be 9mm, and the position of the rotary adjusting cylinder 10 is fixed at the corresponding position on the scale 11 to control the advancing distance of the push rod 2, so that the needle insertion depth is controlled.
The limiting effect of this embodiment syringe through a rotation regulation section of thick bamboo realizes the control to push rod propulsion distance to the realization is avoided injecting the control of the needle degree of depth to the syringe, and the injection is too dark to cause the secondary damage to the fish body. The rotary adjusting cylinder is simple and convenient to operate, accurate in positioning and convenient for quickly adjusting the needle inserting depth of the rainbow trout with different body sizes.
Example 7
An injector for a rainbow trout challenge experiment comprises a hollow needle cylinder 1, a push rod 2 and a push cap 12, wherein the push rod 2 can move along the inner wall of the needle cylinder 1, the front end of the hollow needle cylinder 1 is connected with a detachable injection part 3, the outer side of the base end of the detachable injection part 3 is provided with a threaded cap 9, and the internal thread of the threaded cap 9 is matched with the external thread at the front end of the outer wall of the needle cylinder 1 and is used for realizing the connection of the injection part 3 and the needle cylinder 1; the two ends of the injection component 3 are respectively provided with a base 4 and a needle head protection cover 5, the base 4 can move along the hollow inner cavity of the injection component 3, the base 4 is provided with 2 grooves 6 which are arranged at intervals, are parallel to each other and are communicated, the needle head protection cover 5 is provided with 2 needle head holes 7 which are communicated with the grooves 6 correspondingly, the tail end of an injection needle 8 is fixed in the grooves 6, and the tip end of the injection needle extends to the outside of the needle head protection cover 5 through the needle head holes 7 to form a needle head suitable for puncture.
The injection needle 8 used in this example was a solid needle having an M-shaped tip, a diameter of 0.7mm and a length of 10 mm.
The tail end of the hollow needle cylinder 1 is provided with a limit structure for adjusting the needle inserting depth of the injection needle 8. The limit structure is a rotary adjusting cylinder 10, the front end of the rotary adjusting cylinder is provided with an opening, the tail end of the rotary adjusting cylinder is provided with a through hole, the inner wall of the rotary adjusting cylinder 10 is provided with an internal thread which is matched with the external thread at the tail end of the outer wall of the hollow needle cylinder 1, and the rotary adjusting cylinder 10 is connected with the hollow needle cylinder 1 through the matching of the internal thread and the external thread. Meanwhile, the tail end of the push rod 2 is provided with a scale 11, and the position of the rotary adjusting cylinder 10 is fixed at the corresponding position on the scale 11 to control the advancing distance of the push rod 2 so as to control the needle inserting depth.
In this embodiment, the push rod 2 is connected to an electric booster, and the electric booster is driven by a stepping motor to perform front-back linear motion, so as to push the push rod 2 to perform automatic injection and reset. The used step motor of this embodiment is current product, for the miniature step motor of reputation trapezoidal lead screw slip table FSL 30.
Example 8
The embodiment provides a using method of the syringe for the rainbow trout challenge experiment in the embodiment 6:
firstly, an injection part 3 is connected with a needle cylinder 1 through a threaded cap, at the moment, an injection needle 8 is arranged in a needle head protective cover 5, the needle point is flush with the shell of the needle head protective cover 5, a push rod 2 is reset to enable the front end of the push rod to be in contact with an injection part base 4, the position of a rotary adjusting cylinder 10 at the tail end of the needle cylinder is adjusted according to the required injection depth, and the outer surface of the rotary adjusting cylinder 10 corresponds to corresponding scales 11 on the push rod; if the outer surface of the rotary adjusting cylinder 10 is aligned with the scale 5 on the push rod, the depth of the needle insertion is 5mm at the moment.
The injection part 3 of the injector is immersed in the offensive liquid to finish dipping, the offensive liquid is coated on the outer surface of the injection needle 8, the injector is placed at the injection part at the back of the rainbow trout, the push rod 2 is pushed to further push the base 4 in the injection part 3 forwards, so that the injection needle 8 is pushed to penetrate into the fish body forwards, and the offensive operation is finished by pulling out the injection needle. And (3) immersing the injection part of the injector into the toxic liquid, wherein the needle point is propped against the bottom of the toxic liquid container to reset the needle point and the push rod, or the electric booster is used for completing resetting.
The concentration of the bacteria in the toxin attacking liquid is 2 XLD 50/mu L, LD50 is half of lethal dose, and the concentration of the toxin attacking liquid can be adjusted according to different vaccines, fish body size specifications and special requirements of toxin attacking effect.
It should be noted that the specific dimensions and materials of manufacture of the syringe barrel, the threaded cap, the plunger, the push cap, the screw regulator, the needle protecting cover and the base are not particularly limited, and may be adjusted according to practical applications. The injector for the rainbow trout challenge experiment provided by the invention is also suitable for vaccination of the rainbow trout.
Claims (9)
1. An injector for a rainbow trout virus attacking experiment comprises a hollow needle cylinder (1), a push rod (2) and a push cap (12) which can move along the inner wall of the needle cylinder (1), it is characterized in that the front end of the hollow needle cylinder (1) is connected with a detachable injection part (3), a base (4) and a needle head protective cover (5) are respectively arranged at the two ends of the injection component (3), the base (4) can move along the hollow inner cavity of the injection component (3), at least two grooves (6) which are arranged at intervals, are parallel to each other and are communicated are arranged on the base (4), the needle head protection cover (5) is provided with a through needle head hole (7) corresponding to the position of the groove (6), the tail end of an injection needle (8) is fixed in the groove (6), and the tip end of the injection needle extends to the outside of the needle head protection cover (5) from the needle head hole (7) to form a needle head suitable for puncture.
2. The rainbow trout attacks poisonous experimenting syringe of claim 1, characterized in that, the outside of the tube body of the base end of the detachable injection part (3) is provided with a screw cap (9), the internal thread of the screw cap (9) matches with the external thread of the front end of the outer wall of the syringe (1) for realizing the connection of the injection part (3) and the syringe (1).
3. The rainbow trout toxicity-attacking experimental syringe as claimed in claim 1 or 2, wherein 6 grooves (6) are arranged on the base (4) at intervals, parallel to each other and through, and 6 through needle holes (7) are arranged on the needle protecting cover (5) corresponding to the positions of the grooves (6).
4. The rainbow trout offensive toxin experimental syringe as claimed in claim 3, wherein the injection needle (8) is a solid needle having a conical tip or an M-shaped tip, or a general syringe needle.
5. The rainbow trout offensive toxin experimental syringe as claimed in claim 4, wherein the diameter of the injection needle (8) is 0.7-1.0 mm, the length of the whole needle is 10mm, and the length of the tip of the needle is 2 mm.
6. The rainbow trout attacks poisonous experimenting syringe according to claim 5 characterized in that, the hollow syringe (1) is provided with a limit structure at the tail end for adjusting the depth of the injection needle (8).
7. The rainbow trout attacks poisonous experiment and uses syringe as in claim 6, characterized by that, the limit structure is a rotation regulation section of thick bamboo (10), its front end has the opening, the tail end has the through-hole, and the inner wall of rotation regulation section of thick bamboo (10) is equipped with the internal thread, with the external screw thread matching of hollow cylinder (1) outer wall tail end, rotation regulation section of thick bamboo (10) realizes being connected with hollow cylinder (1) through the cooperation of internal thread and external screw thread.
8. The rainbow trout poison attacking experimental syringe as claimed in claim 7, wherein the tail end of the push rod (2) is provided with a scale (11), and the position of the rotary adjusting cylinder (10) is fixed at a corresponding position on the scale (11) to control the advancing distance of the push rod (2) so as to control the depth of needle insertion.
9. The rainbow trout poison attacking experimental injector according to claim 8, characterized in that the push rod (2) is connected with an electric booster, and the electric booster is driven by a stepping motor to move linearly back and forth, so as to push the push rod (2) to perform automatic injection and reset.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911280974.9A CN110897754A (en) | 2019-12-13 | 2019-12-13 | Rainbow trout attacks poisonous syringe for experiment |
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| CN201911280974.9A CN110897754A (en) | 2019-12-13 | 2019-12-13 | Rainbow trout attacks poisonous syringe for experiment |
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| CN110897754A true CN110897754A (en) | 2020-03-24 |
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| US4261359A (en) * | 1979-09-27 | 1981-04-14 | Chein Ping Hwang | Continuous injection syringe for veterinary use |
| CN103341228A (en) * | 2013-07-19 | 2013-10-09 | 清华大学 | Disposable multi-needle-tube injection needle head and pre-filling syringe comprising injection needle head |
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