A device for gavage of animals
By introducing an optical fiber core and a detection mechanism into the gavage device, the problem of difficult insertion during gavage operation was solved, achieving precise insertion of the gavage needle with a high success rate and reducing the risk of accidental tracheal injury.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 广州新华学院
- Filing Date
- 2025-01-24
- Publication Date
- 2026-06-23
AI Technical Summary
In animal experiments, gavage is difficult to insert accurately into the stomach and is prone to misinsertion into the trachea, leading to failure or complications. This is especially true for beginners, as the depth of needle insertion is difficult to control.
A gavage device was designed, comprising a gavage needle and a detection mechanism. The device uses an optical fiber core for pH value detection and the detection mechanism confirms whether the gavage needle is correctly inserted into the stomach and the depth of insertion. The device includes a light transmission module, a light source module, and a detection structure to achieve precise insertion of the gavage needle.
This improved the success rate of the procedure, reduced the occurrence of complications during gavage, and ensured that the gavage needle was correctly inserted into the stomach without damaging the trachea.
Smart Images
Figure CN224387587U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of animal experimental technology, and more specifically, to a gavage device for animal experiments. Background Technology
[0002] In medical laboratory teaching, oral gavage of experimental animals is a skill that medical students must master. This method is simple to operate, provides accurate dosage, can be repeated, and is suitable for various experimental animals such as mice and rats. However, because the trachea and esophagus of the animal are located close to each other, both in the middle of the neck, with the trachea in front and the esophagus behind, and they share a common entrance, the following problems often arise during actual gavage operation: First, the gavage tube may be mistakenly inserted into the trachea, leading to the death of the mouse and experimental failure; second, the depth of needle insertion is difficult to control. For beginners, the success of the experiment is crucial to the success of the gavage needle being successfully inserted into the stomach of the experimental animal. Utility Model Content
[0003] Therefore, in order to solve the problem of difficulty in controlling the insertion position and depth of the gavage device, this utility model provides a gavage device for animal experiments, the specific technical solution of which is as follows:
[0004] An animal experimental gavage device includes a gavage needle and a detection mechanism. The gavage needle includes a syringe and a plug mounted on the syringe. The syringe has a first chamber and a second chamber spaced apart inside. The first chamber communicates with the plug. The second chamber contains a light-transmitting module and an optical fiber core for detecting the pH value of the stomach. The light-transmitting module is connected to the optical fiber core. The detection mechanism includes a light source module and a detection structure. The light source module is connected to one end of the optical fiber core, and the detection structure is connected to the other end of the optical fiber core. The detection structure is used for pH value analysis.
[0005] The aforementioned animal experimental gavage device features a needle plug that can connect to various standardized injection needles for administering medication. It also incorporates an optical fiber core that detects pH levels during needle insertion. Furthermore, a detection mechanism analyzes the pH readings from the fiber core to confirm the correct insertion of the gavage needle into the stomach and the depth of insertion. Compared to traditional gavage devices, this device boasts a higher success rate and is less prone to complications.
[0006] Furthermore, the syringe includes a needle shaft and a needle tip that communicates with one end of the needle shaft. A cavity is formed inside the needle shaft, and the cavity is divided into a first chamber and a second chamber. A drug inlet chamber is formed inside the needle plug, and the drug inlet chamber communicates with the first chamber.
[0007] Furthermore, the needle includes a first head and a second head. One end of the first head is connected to the first chamber, and the other end of the first head has a drug outlet for the drug to flow out. The second head is disposed on one end of the second chamber, and the light-transmitting module is embedded in the second head.
[0008] Furthermore, the light-transmitting module is a solid, light-transmitting metal.
[0009] Furthermore, the gavage needle also includes a light source interface and an optical fiber interface. The light source interface is installed on the other end of the needle shaft, and the optical fiber interface is installed on the side wall of the needle shaft. The interior of the light source interface and the interior of the optical fiber interface are both connected to the second chamber.
[0010] Furthermore, the optical fiber core includes an incoming optical fiber channel, one end of which is connected to the second head, and the incoming optical fiber channel extends into the light source interface and is connected to the light source module.
[0011] Furthermore, the optical fiber core also includes an output optical fiber channel, one end of which is connected to the second head, and the other end of which extends into the optical fiber interface and is connected to the detection structure.
[0012] Furthermore, the detection structure includes a receiving module and an analysis module for performing pH value analysis. One end of the receiving module is connected to the light-emitting optical fiber channel, and the other end of the receiving module is connected to the analysis module.
[0013] Furthermore, both the outer wall of the light source interface and the outer wall of the optical fiber interface are provided with external threads.
[0014] Furthermore, the outer contours of both the first head and the second head are arc-shaped. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the structure of the gavage needle of the animal experimental gavage device according to an embodiment of the present invention.
[0016] Explanation of reference numerals in the attached figures:
[0017] 1. Syringe; 11. First chamber; 12. Second chamber; 2. Needle plug; 21. Drug injection chamber; 3. Fiber optic core; 31. Inlet fiber optic channel; 32. Outlet fiber optic channel; 4. Transmitting module; 5. Needle tip; 51. First head; 52. Second head; 6. Light source interface; 7. Fiber optic interface; 8. External thread. Detailed Implementation
[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with its embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and do not limit its scope of protection.
[0019] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.
[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.
[0021] In this utility model, "first" and "second" do not represent a specific quantity or order, but are merely used to distinguish names.
[0022] like Figure 1 As shown, an animal experimental gavage device according to one embodiment of the present invention includes a gavage needle and a detection mechanism. The gavage needle includes a syringe 1 and a needle plug 2 installed on the syringe 1. The syringe 1 has a first chamber 11 and a second chamber 12 spaced apart inside. The first chamber 11 is connected to the needle plug 2. The second chamber 12 is provided with a light-transmitting module 4 and an optical fiber core 3 for detecting the pH value of the stomach. The light-transmitting module 4 is connected to the optical fiber core 3. The detection mechanism includes a light source module and a detection structure. The light source module is connected to one end of the optical fiber core 3, and the detection structure is connected to the other end of the optical fiber core 3. The detection structure is used for pH value analysis.
[0023] The aforementioned animal experimental gavage device is equipped with a needle plug 2, which can be connected to various standardized injection needles to deliver the gavage medication. It also features an optical fiber core 3, which can detect the pH value while the gavage needle is inserted. Furthermore, a detection mechanism analyzes the pH value detected by the optical fiber core 3 to confirm whether the gavage needle is correctly inserted into the stomach and the depth of insertion. Compared to traditional gavage devices, this device boasts a higher success rate and is less prone to causing gavage complications.
[0024] like Figure 1As shown, in one embodiment, the syringe 1 includes a needle shaft and a needle 5 communicating with one end of the needle shaft. A cavity is formed within the needle shaft, which is divided into a first chamber 11 and a second chamber 12. A drug inlet chamber 21 is formed within the needle plug 2, and the drug inlet chamber 21 communicates with the first chamber 11. By providing the first chamber 11, the gavage medication is fed into the drug inlet chamber 21 and circulates and is stored within the first chamber 11, which is beneficial for subsequent gavage medication injection operations.
[0025] like Figure 1 As shown, in one embodiment, the needle 5 includes a first head 51 and a second head 52. One end of the first head 51 is connected to the first chamber 11, and the other end of the first head 51 has a drug outlet for the drug to flow out. The second head 52 is disposed on one end of the second chamber 12, and the light-transmitting module 4 is embedded in the second head 52. The embedded design facilitates the replacement of consumables later.
[0026] Specifically, the light-transmitting module 4 is a solid, light-transmitting metal. It is preferably a 316L stainless steel mirror. The thickness is determined by the radius of curvature of the optical fiber; in this embodiment, a thickness of 24mm is used.
[0027] like Figure 1 As shown, in one embodiment, the gavage needle further includes a light source interface 6 and an optical fiber interface 7. The light source interface 6 is installed on the other end of the needle shaft, and the optical fiber interface 7 is installed on the side wall of the needle shaft. The interior of the light source interface 6 and the interior of the optical fiber interface 7 are both connected to the second chamber 12.
[0028] like Figure 1 As shown, in one embodiment, the optical fiber core 3 includes an optical fiber channel 31, one end of which is connected to the second head 52, and the optical fiber channel 31 extends into the light source interface 6 and is connected to the light source module.
[0029] like Figure 1 As shown, in one embodiment, the optical fiber core 3 further includes an output optical fiber channel 32, one end of which is connected to the second head 52, and the other end of which extends into the optical fiber interface 7 and is connected to the detection structure.
[0030] Preferably, the inner diameter of both the optical fiber inlet channel 31 and the optical fiber outlet channel 32 is 480 μm. This eliminates the need for additional increases in the inner and outer diameters of the medical experimental gavage needle, thus ensuring versatility.
[0031] In one embodiment, the detection structure includes a receiving module and an analysis module for performing pH value analysis. One end of the receiving module is connected to the light-emitting fiber channel 32, and the other end of the receiving module is connected to the analysis module.
[0032] Specifically, the receiving module is a spectrometer; the analysis module is a computer. This is existing technology and will not be elaborated further.
[0033] like Figure 1 As shown, in one embodiment, both the outer wall of the light source interface 6 and the outer wall of the fiber optic interface 7 are provided with external threads 8. This facilitates the connection of various light sources and testing equipment.
[0034] Preferably, the external thread 8 is a 0.3mm thread.
[0035] In one embodiment, the outer contours of both the first head 51 and the second head 52 are arc-shaped. This ensures that the animal's trachea and stomach will not be accidentally injured during gavage insertion.
[0036] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0037] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.
Claims
1. A gavage device for animal experiments, characterized in that, include: A gavage needle, comprising a syringe and a needle plug mounted on the syringe, wherein the syringe is provided with a first chamber and a second chamber at intervals, the first chamber being in communication with the needle plug, and the second chamber being provided with a light-transmitting module and an optical fiber core for detecting the pH value of the stomach, the light-transmitting module being connected to the optical fiber core; The testing mechanism includes a light source module and a testing structure. The light source module is connected to one end of the optical fiber core, and the testing structure is connected to the other end of the optical fiber core. The testing structure is used for pH value analysis.
2. The gavage device for animal experiments according to claim 1, characterized in that, The syringe includes a needle shaft and a needle tip that communicates with one end of the needle shaft. A cavity is formed inside the needle shaft, and the cavity is divided into a first chamber and a second chamber. A drug inlet chamber is formed inside the needle plug, and the drug inlet chamber communicates with the first chamber.
3. The gavage device for animal experiments according to claim 2, characterized in that, The needle includes a first head and a second head. One end of the first head is connected to the first chamber, and the other end of the first head has a drug outlet for the drug to flow out. The second head is disposed on one end of the second chamber, and the light-transmitting module is embedded in the second head.
4. The gavage device for animal experiments according to claim 3, characterized in that, The light-transmitting module is made of solid, light-transmitting metal.
5. The gavage device for animal experiments according to claim 3, characterized in that, The gavage needle also includes a light source interface and an optical fiber interface. The light source interface is installed on the other end of the needle shaft, and the optical fiber interface is installed on the side wall of the needle shaft. The interior of the light source interface and the interior of the optical fiber interface are both connected to the second chamber.
6. The gavage device for animal experiments according to claim 5, characterized in that, The optical fiber core includes an incoming optical fiber channel, one end of which is connected to the second head, and the incoming optical fiber channel extends into the light source interface and is connected to the light source module.
7. The gavage device for animal experiments according to claim 6, characterized in that, The optical fiber core also includes an output optical fiber channel, one end of which is connected to the second head, and the other end of which extends into the optical fiber interface and is connected to the detection structure.
8. The gavage device for animal experiments according to claim 7, characterized in that, The detection structure includes a receiving module and an analysis module for pH value analysis. One end of the receiving module is connected to the light-emitting fiber channel, and the other end of the receiving module is connected to the analysis module.
9. The gavage device for animal experiments according to claim 5, characterized in that, Both the outer wall of the light source interface and the outer wall of the optical fiber interface are provided with external threads.
10. The gavage device for animal experiments according to claim 3, characterized in that, The outer contours of both the first head and the second head are arc-shaped.