Rat head operation retaining and fixing clamp

Abstract

The utility model discloses a fixing clamp for a rat head operation. The fixing clamp comprises a fixing plate, a fixing frame, a biting rod, a front fixing beam, a rear fixing beam and a subjaw fixing cone. The two fixing frames are fixedly arranged on the fixing plate in a spaced mode. The biting rod is connected between the front ends of the two fixing frames; the front fixing beam is rotationally arranged between the front parts of the two fixing frames and is used for fixing the front end of the head of the rat; the rear fixing beam is rotationally arranged between the rear parts of the two fixing frames and is used for fixing the rear end of the head of the rat; a plurality of front through holes and rear through holes are formed in the side faces of the front portion and the rear portion of the fixing frame, the two ends of the front fixing beam are rotationally arranged in the two corresponding front through holes respectively, and the two ends of the rear fixing beam are rotationally arranged in the two corresponding rear through holes respectively. A subjaw fixing cone is arranged on the inner side of each fixing frame and used for fixing the lower jaw of the rat. In conclusion, the fixing device has the advantages of novel structure, convenience in operation, good fixing effect and the like.

Description

Technical Field

[0001] The utility model belongs to the technical field of animal experimental instruments, in particular to a securing fixture for rat head surgery. Background Art

[0002] When conducting neuroscience or cranial surgery experiments on rats, ensuring the precise fixation of the experimental animal's head is a crucial step, which is not only related to the success rate of the operation, but also directly related to the welfare and safety of the experimental animals. When the operation focuses on the rat's head, especially the skull top area, the accuracy and comfort of the fixation technology become key considerations. The design of traditional rat head fixation devices mainly relies on the pointed cone structure on both sides, which is precisely inserted into a specific position of the skull to achieve stable positioning of the head. At the same time, in order to further ensure the stability of the rat's head, the device is usually equipped with a soft rope or metal clamp at the front, which is specifically used to fix the rat's upper incisor. This design can effectively prevent any involuntary movement of the rat's head under anesthesia.

[0003] However, with the development of experimental technology, the limitations of existing fixation devices have gradually become apparent, especially in experimental scenarios requiring gas anesthesia. Gas anesthesia is widely used in experimental animal anesthesia due to its advantages such as rapid onset, ease of adjustment, and reduction of animal stress response. However, traditional rat head fixation devices do not leave gas and waste gas recovery channels after fixing the rat's head. This not only limits the application of gas anesthesia in experiments, but may also cause leakage of anesthetic gases, posing a potential risk to the health of experimental personnel. It also does not meet laboratory safety standards and environmental requirements. Utility Model Content

[0004] In view of the above problems, the purpose of the present invention is to provide a rat head surgery securing fixture, which can fix the rat head while leaving a gas passage at the front end of the rat head to facilitate anesthesia.

[0005] The technical solution of the utility model is: a rat head surgery fixing fixture, comprising:

[0006] Fixed plate;

[0007] Two fixing frames are fixedly arranged on the fixing plate at intervals;

[0008] A bite rod connected between the front ends of the two fixing frames;

[0009] A front fixing beam is rotatably arranged between the front portions of the two fixing frames and is used to fix the front end of the rat's head;

[0010] a rear fixing beam, rotatably disposed between the rear portions of the two fixing frames, and used for fixing the rear end of the rat's head;

[0011] Two submandibular fixing cones are provided on the inner side of each fixing frame, and are used for fixing the submandibular part of rats.

[0012] Furthermore, the front and rear sides of the fixing frame are provided with a plurality of front through holes and rear through holes, the two ends of the front fixing beam are respectively rotatably set in the two corresponding front through holes, and the two ends of the rear fixing beam are respectively rotatably set in the two corresponding rear through holes.

[0013] Furthermore, the front fixed beam includes:

[0014] Two front rotating rods are rotatably disposed in the two corresponding front through holes, and the side surfaces of the front rotating rods are provided with external threads;

[0015] A front arc rod, both ends of which are fixedly connected to the inner ends of the two front rotating rods through connecting rods, and the front arc rod is used to be fixedly clamped above the front end of the rat's head;

[0016] A front locking nut is provided on the external threaded sleeve of each front rotating rod, and is used to limit the rotation of the front rotating rod.

[0017] Furthermore, the rear fixed beam includes:

[0018] Two rear rotating rods are rotatably disposed in the corresponding two rear through holes, and the side surfaces of the rear rotating rods are provided with external threads;

[0019] A rear arc rod, both ends of which are fixedly connected to the inner ends of the two rear rotating rods through connecting rods, and the rear arc rod is used to be fixedly clamped above the rear end of the rat's head;

[0020] A rear locking nut is provided on the external threaded sleeve of each rear rotating rod to limit the rotation of the rear rotating rod.

[0021] Furthermore, a slide groove is provided on the fixing plate, and the two fixing frames are slidably arranged on the slide groove to adjust the distance between the two fixing frames.

[0022] Furthermore, the fixing frame, bite rod, front fixing beam, rear fixing beam and submandibular fixing cone are all detachable metal parts.

[0023] The working method of the utility model comprises the following steps: adjusting the spacing of the fixing frames according to the body shape of the rat, then placing the rat's head between the fixing frames, occluding and fixing the rat's incisors on the bite rod, and placing the submandibular fixing cone against both sides of the rat's submandibular jaw, then rotating the front fixing beam so that the front arc rod is pressed above the front end of the rat's head, then tightening the front locking nut to fix the front rotating rod, then rotating the rear fixing beam so that the rear arc rod is pressed above the rear end of the rat's head, then tightening the rear locking nut to fix the rear rotating rod, and thus completing the rat's head fixing operation.

[0024] Compared with the prior art, the present invention has the following advantages: The rat head surgical securing fixture provided by the present invention can accommodate rats of different sizes by providing adjustable spacing between fixed frames arranged at intervals on a fixed plate. A bite bar is provided at the front end of the fixed frame, allowing the rat's incisors to occlude and secure the bite bar, leaving the nasal breathing passage free. Rotatable front and rear fixing beams are also provided to secure the front and back of the rat's head, respectively. This provides excellent securing effect and a wide adjustment range, making it suitable for securing rats of different sizes without affecting the rat's inhalation of anesthetic gas. In summary, the present invention has the advantages of a novel structure, easy operation, and excellent securing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a top view of the utility model;

[0026] Figure 2 It is a front view of the present utility model.

[0027] Among them, 1-fixed plate, 11-slide groove, 2-fixed frame, 3-bite rod, 4-front fixed beam, 41-front rotating rod, 42-front arc rod, 43-front locking nut, 5-rear fixed beam, 51-rear rotating rod, 52-rear arc rod, 53-rear locking nut, 6-submandibular fixation cone. DETAILED DESCRIPTION

[0028] The following is combined with Figure 1 To the attached Figure 2 , a detailed description of the specific embodiments of the present invention is provided. In the description of the present invention, it should be understood that the terms "center," "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended only to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed, or operate in a specific direction. Therefore, they should not be construed as limiting the present invention.

[0029] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include one or more of such features; and in the description of this utility model, unless otherwise specified, "plurality" means two or more.

[0030] It should be noted that the circuit connections involved in the present invention all adopt conventional circuit connection methods and do not involve any innovation.

[0031] Example: Figure 1-2 As shown, a rat head surgical fixation fixture includes a fixing plate 1, a fixing frame 2, a bite bar 3, a front fixing beam 4, a rear fixing beam 5 and a submandibular fixing cone 6.

[0032] The two fixing frames 2 are fixedly arranged on the fixing plate 1 at intervals. The fixing plate 1 is provided with a slide groove 11. The two fixing frames 2 are slidably arranged on the slide groove 11 to adjust the distance between the two fixing frames 2.

[0033] The bite rod 3 is connected and arranged between the front ends of the two fixing frames 2;

[0034] The front fixed beam 4 is rotatably arranged between the front parts of the two fixing frames 2 for fixing the front end of the rat's head; the rear fixed beam 5 is rotatably arranged between the rear parts of the two fixing frames 2 for fixing the rear end of the rat's head; the front and rear side surfaces of the fixing frames 2 are provided with a plurality of front through holes and rear through holes, the two ends of the front fixed beam 4 are respectively rotatably arranged in the two front through holes corresponding to each other, and the two ends of the rear fixed beam 5 are respectively rotatably arranged in the two rear through holes corresponding to each other, the front fixed beam 4 includes a front rotating rod 41, a front arc rod 42 and a front locking nut 43, the two front rotating rods 41 are respectively rotatably arranged in the two corresponding front through holes, and the side surface of the front rotating rod 41 is provided with an external thread; the two ends of the front arc rod 42 are respectively connected to the two front through holes by a connecting rod The inner end of the rotating rod 41 is fixedly connected, and the front arc rod 42 is used to be fixedly clamped above the front end of the rat's head; the external threaded sleeve of each front rotating rod 41 is provided with a front locking nut 43 for limiting the rotation of the front rotating rod 41, and the rear fixed beam 5 includes a rear rotating rod 51, a rear arc rod 52 and a rear locking nut 53; the two rear rotating rods 51 are respectively rotatably arranged in the corresponding two rear through holes, and the side surfaces of the rear rotating rods 51 are provided with external threads; the two ends of the rear arc rod 52 are respectively fixedly connected to the inner ends of the two rear rotating rods 51 by connecting rods, and the rear arc rod 52 is used to be fixedly clamped above the rear end of the rat's head; the external threaded sleeve of each rear rotating rod 51 is provided with a rear locking nut 53 for limiting the rotation of the rear rotating rod 51;

[0035] A submandibular fixing cone 6 is provided on the inner side of each fixing frame 2 for fixing the rat's submandibular area. The fixing frame 2, bite bar 3, front fixing beam 4, rear fixing beam 5 and submandibular fixing cone 6 are all detachable metal parts.

[0036] The working method of the above embodiment is: adjust the spacing of the fixing frames 2 according to the body size of the rat, then place the rat's head between the fixing frames 2, so that the rat's incisors are occluded and fixed on the bite rod 3, and the submandibular fixing cone 6 is against the two sides of the rat's submandibular jaw, then rotate the front fixing beam 4 so that the front arc rod 42 is pressed above the front end of the rat's head, then tighten the front locking nut 43 to fix the front rotating rod 41, then rotate the rear fixing beam 5 so that the rear arc rod 52 is pressed above the rear end of the rat's head, then tighten the rear locking nut 53 to fix the rear rotating rod 51, and the rat's head fixing operation is completed.

[0037] The specific models of the above electronic components are not specially specified, and ordinary products available on the market can be selected as long as they can meet the use requirements of the present utility model.

[0038] The specific embodiments described above further illustrate the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above is only a specific embodiment of the present invention and does not limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention are included in the scope of protection of the present invention.

Claims

1. A rat head surgery securing fixture, characterized in that: include: Fixed plate (1); Two fixing frames (2) are fixedly arranged on the fixing plate (1) at intervals; A bite rod (3) is connected and arranged between the front ends of the two fixing frames (2); A front fixing beam (4) is rotatably arranged between the front portions of the two fixing frames (2) and is used to fix the front end of the rat's head; A rear fixing beam (5) is rotatably arranged between the rear portions of the two fixing frames (2) and is used to fix the rear end of the rat's head; Two submandibular fixing cones (6) are provided on the inner side of each fixing frame (2) and are used for fixing the submandibular part of a rat.

2. A rat head surgery securing fixture as claimed in claim 1, characterized in that: The front and rear side surfaces of the fixing frame (2) are both provided with a plurality of front through holes and rear through holes, the two ends of the front fixing beam (4) are respectively rotatably arranged in the two corresponding front through holes, and the two ends of the rear fixing beam (5) are respectively rotatably arranged in the two corresponding rear through holes.

3. A rat head surgery securing fixture as claimed in claim 2, characterized in that: The front fixed beam (4) comprises: Two front rotating rods (41) are rotatably disposed in the two corresponding front through holes, and the side surfaces of the front rotating rods (41) are provided with external threads; A front arc rod (42), both ends of which are fixedly connected to the inner ends of the two front rotating rods (41) via connecting rods, and the front arc rod (42) is used for being fixedly clamped above the front end of the rat's head; A front locking nut (43) is provided on the external threaded sleeve of each front rotating rod (41) and is used to limit the rotation of the front rotating rod (41).

4. The rat head surgery securing fixture according to claim 2, wherein: The rear fixed beam (5) comprises: Two rear rotating rods (51) are rotatably disposed in the two corresponding rear through holes, and the side surfaces of the rear rotating rods (51) are provided with external threads; A rear arc rod (52), both ends of which are fixedly connected to the inner ends of the two rear rotating rods (51) via connecting rods, and the rear arc rod (52) is used for being fixedly clamped above the rear end of the rat's head; A rear locking nut (53) is provided on the external threaded sleeve of each rear rotating rod (51) and is used to limit the rotation of the rear rotating rod (51).

5. The rat head surgery securing fixture according to claim 1, wherein: A sliding groove (11) is provided on the fixing plate (1), and the two fixing frames (2) are slidably arranged on the sliding groove (11) for adjusting the distance between the two fixing frames (2).

6. The rat head surgery securing fixture according to claim 1, wherein: The fixing frame (2), bite rod (3), front fixing beam (4), rear fixing beam (5), and submandibular fixing cone (6) are all detachable metal parts.

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