A fixation device for small animal continuous anesthesia and enhanced CT scanning

Abstract

The utility model discloses a kind of fixing device for small animal sustained anesthesia and enhanced CT scanning, more specifically related to medical experimental apparatus technical field, including fixed workstation, the side of fixed workstation is equipped with fixed rope, fixed rope is set in the side of fixed workstation by locking knob, the end of fixed rope is equipped with spring clamp, the upper surface of fixed workstation is equipped with scanning support table;The upper surface of one end of scanning support table is equipped with anesthesia mask, anesthesia mask is equipped with air inlet hose;One end of scanning support table is pasted with tail fixed frame, and mobile mechanism is arranged between tail fixed frame and fixed workstation.The utility model utilizes locking knob and corresponding fixed rope and spring clamp cooperation, makes the limbs and tail of small animal unfold and fix, avoid the overlap of dirty organ and limbs when CT scanning;Anesthesia mask is continuously inhaled into anesthetic gas to the breathing part of small animal, to play the effect of sustained anesthesia;Solve the problem that existing fixing device is difficult to sustain anesthesia.

Description

Technical Field

[0001] This utility model relates to the field of medical experimental device technology, and more specifically, to a fixation device for continuous anesthesia and enhanced CT scanning of small animals. Background Technology

[0002] The main functions of a hospital include treating patients, diagnosing illnesses, and conducting pathological or pharmaceutical research. Therefore, appropriate medical experimental equipment is needed to conduct related experiments on small animals. To perform CT scans on small animals and prevent their movement, not only are restraint devices needed to hold or bind their limbs and tails, but anesthesia is also required. There are two methods of anesthesia: one is intraperitoneal injection, which, while simple in practice, has a significant physiological impact on the animal and a long anesthesia time, resulting in low experimental efficiency; the other is external anesthesia using a gas that is continuously supplied during the CT scan. While this method has less physiological impact and a shorter anesthesia time, it is complex in practice. Therefore, gas anesthesia is more commonly used in current experiments.

[0003] In practical use, existing restraint devices for small animals have some problems:

[0004] First, the density of existing fixation devices is similar to that of small animals, resulting in poor CT scan imaging.

[0005] Second, enhanced CT scans require the object being scanned to remain in a relatively fixed position. However, existing fixation devices and anesthesia instruments are not integrated into one unit, which requires transferring small animals between intravenous anesthesia and fixation procedures, making the operation inconvenient.

[0006] Third, the current method of gas anesthesia has a short anesthesia time and there is a risk of anesthetic gas leakage, which can cause small animals to wake up and move around, thus affecting the CT scan imaging results.

[0007] Therefore, this utility model proposes a fixation device for continuous anesthesia and enhanced CT scanning of small animals, as a further improvement, so as to integrate the fixation device with the anesthesia instrument into one unit. Utility Model Content

[0008] In order to overcome the above-mentioned defects of the prior art, the embodiments of this utility model provide a fixation device for continuous anesthesia and enhanced CT scanning of small animals, so as to solve the problems mentioned in the background art.

[0009] To achieve the above objectives, this utility model provides the following technical solution: a fixation device for continuous anesthesia and enhanced CT scanning of small animals, including a fixation worktable, a fixation rope provided on the side of the fixation worktable, the fixation rope being set on the side of the fixation worktable by a locking knob, a spring clip for restraining limbs provided at the end of the fixation rope, and a scanning support table provided on the upper surface of the fixation worktable.

[0010] The upper surface of one end of the scanning support stage is provided with an anesthesia mask, and the anesthesia mask is equipped with an air inlet hose for introducing anesthetic gas.

[0011] The end of the scanning support table away from the anesthesia mask is attached to a tail fixing frame, and a moving mechanism is provided between the tail fixing frame and the fixed worktable.

[0012] Furthermore, the locking knob includes: a fixed ring, a rotating ring, and a locking pin;

[0013] One side of the fixed ring is fixedly installed on the side of the fixed workbench. The rotating ring rotates inside the fixed ring. A limit ring is fixedly installed on the side of the fixed ring away from the fixed workbench. A circular plate is fixedly installed on the side of the rotating ring close to the limit ring. Several evenly distributed locking slots are opened on the surface of the circular plate. The locking pin passes through the limit ring and is inserted into a locking slot. Through slots are opened on the annular surfaces of the rotating ring and the fixed ring. The fixing rope passes through the through slots. A rotating handle that rotates at the center of the limit ring is fixedly installed on the surface of the circular plate.

[0014] Furthermore, the moving mechanism includes: a fixed base and a rotating screw.

[0015] Both the fixed worktable and the scanning support table, which are away from the anesthesia mask, are provided with a movable slot. The fixed seat is fixedly installed at the bottom of the tail fixed frame. The fixed seat passes through the movable slot. The rotating screw is threadedly connected to the fixed seat. One end of the rotating screw is fixedly installed with a knob through a connecting rod that passes through the movable slot. The other end of the rotating screw is rotatably connected to the movable slot.

[0016] Furthermore, the tail fixing frame includes: a fixing base frame and a clamping frame. One end of the fixing base frame is rotatably connected to the clamping frame via a hinge, and the other end of the fixing base frame is snapped into the clamping frame via a buckle. A lower soft pad and an upper soft pad are fixedly installed on the sides of the fixing base frame and the clamping frame that are close to each other. The lower soft pad is in contact with the upper soft pad, and a groove is provided on the side of the lower soft pad that is in contact with the upper soft pad.

[0017] Furthermore, the anesthesia mask is shaped as a semi-ellipse, with one side of the anesthesia mask rotatably connected to the scanning support stage via a hinge, and the other side of the anesthesia mask being snapped into the scanning support stage via a buckle.

[0018] Furthermore, the scanning support stage is made of a low-density material.

[0019] The technical effects and advantages of this utility model are as follows:

[0020] 1. Compared with existing technologies, by setting up a scanning support stage, not only does it provide support, but if a low-density foam support stage is used, its low density will create excellent CT contrast with the small animal, thus enhancing the clarity of the CT scan. The specific size and thickness of the scanning support stage can be set according to the morphology of the small animal being tested, making the structure more compact and small. By setting up a fixed worktable, locking knobs, fixing ropes, and spring clips are used. The locking knobs, in conjunction with the corresponding fixing ropes and spring clips, can fix the limbs and tail of the small animal and restrain and pull them, so that the limbs and tail of the small animal can be spread out, avoiding the overlap of organs and limbs during CT scanning.

[0021] 2. Compared with existing technologies, by setting up an anesthesia mask, anesthetic gas can be continuously introduced into the respiratory tract of small animals through the air inlet hose, thereby achieving a continuous anesthesia effect. This enables continuous delivery of anesthetic gas without affecting the imaging process of live small animals in CT imaging. Furthermore, the anesthesia mask and the fixation measures of the fixation table are integrated into one unit, avoiding the transfer between anesthesia and fixation operations and improving fixation efficiency. This solves the problems of low fixation efficiency of live small animals and difficulty in achieving long-term, multi-time-point dynamic observation of the same location in existing fixation devices. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0023] Figure 2 This is a schematic diagram of the locking knob of this utility model.

[0024] Figure 3 This is a partial cross-sectional schematic diagram of the locking knob of this utility model.

[0025] Figure 4 This is a schematic diagram of the tail fixing frame and moving mechanism of this utility model.

[0026] The attached figures are labeled as follows:

[0027] 1. Fixed workbench;

[0028] 2. Fixing rope; 21. Spring clip;

[0029] 3. Lock the knob;

[0030] 31. Fixed ring; 32. Rotating ring; 33. Locking pin; 34. Limiting ring;

[0031] 35. Circular plate; 351. Locking slot; 352. Rotating handle;

[0032] 36. Through groove;

[0033] 4. Scanning support stage;

[0034] 5. Anesthesia mask; 51. Air inlet hose;

[0035] 6. Tail-end mounting bracket;

[0036] 61. Fixed base frame; 62. Clamping frame; 63. Lower soft pad; 64. Upper soft pad; 65. Groove;

[0037] 7. Moving mechanism;

[0038] 71. Fixed base; 72. Rotating screw; 721. Connecting rod; 722. Knob;

[0039] 73. Moving slot. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0041] As attached Figure 1 The present invention relates to a fixation device for continuous anesthesia and enhanced CT scanning of small animals, including a fixation table 1, a fixation rope 2 on the side of the fixation table 1, the fixation rope 2 being set on the side of the fixation table 1 via a locking knob 3, the end of the fixation rope 2 being provided with a spring clip 21 for restraining limbs, and a scanning support table 4 on the upper surface of the fixation table 1.

[0042] An anesthesia mask 5 is provided on the upper surface of one end of the scanning support stage 4. The anesthesia mask 5 is equipped with an air inlet hose 51 for introducing anesthetic gas.

[0043] A tail fixing frame 6 is attached to the end of the scanning support stage 4 away from the anesthesia mask 5, and a moving mechanism 7 is provided between the tail fixing frame 6 and the fixed worktable 1.

[0044] Among them, the scanning support stage 4 plays a supporting role;

[0045] The fixing measures for the fixed workbench 1 are: locking knob 3, fixing rope 2 and spring clip 21; if five locking knobs 3 are set up to cooperate with the corresponding fixing ropes 2 and spring clips 21, they can be used to fix the limbs and tail of the small animal, which can bind and pull the limbs of the small animal, so that the limbs and tail of the small animal can be spread out, avoiding the overlap of organs and limbs during CT scan; making the size design of the entire fixing device more compact.

[0046] Among them, the anesthesia mask 5 uses the air inlet hose 51 to continuously introduce anesthetic gas into the respiratory part of the small animal, thereby achieving a continuous anesthesia effect; avoiding the interruption of anesthetic gas and the possibility that the small animal may wake up and move, which would affect the imaging effect; that is, anesthetizing the small animal in real time, so that it can perform clear in vivo CT scan imaging.

[0047] Among them, the fixation measures of the anesthesia mask 5 and the fixed workbench 1 are integrated into one, which avoids the transfer between the anesthesia operation and the fixation operation and improves the fixation efficiency; it solves the problems of low fixation efficiency of small animals and difficulty in achieving dynamic observation of the same position for a long time and at multiple time points in the existing fixation device.

[0048] The tail fixing bracket 6 is used to hold the tail of the small animal and can unfold the body of the small animal; the moving mechanism 7 can also change the position of the tail fixing bracket 6 holding the tail of the small animal, thereby facilitating the adjustment of the position for intravenous injection or blood drawing.

[0049] In a preferred embodiment, as shown in the appendix Figure 1 Appendix Figure 2 and attached Figure 3 As shown, the locking knob 3 includes: a fixed ring 31, a rotating ring 32, and a locking pin 33;

[0050] One side of the fixed ring 31 is fixedly installed on the side of the fixed workbench 1. The rotating ring 32 rotates inside the fixed ring 31. A limit ring 34 is fixedly installed on the side of the fixed ring 31 away from the fixed workbench 1. A circular plate 35 is fixedly installed on the side of the rotating ring 32 close to the limit ring 34. Several evenly distributed locking slots 351 are opened on the surface of the circular plate 35. The locking pin 33 passes through the limit ring 34 and is inserted into a locking slot 351. The annular surfaces of the rotating ring 32 and the fixed ring 31 are provided with through grooves 36. The fixing rope 2 passes through the through grooves 36. A rotating handle 352 that rotates at the center of the limit ring 34 is fixedly installed on the surface of the circular plate 35.

[0051] When the locking pin 33 is not inserted into the locking slot 351, the rotating handle 352 can drive the rotating ring 32 to rotate inside the fixed ring 31 through the circular plate 35. When the rotating ring 32 rotates and drives the fixed rope 2 to wrap around the rotating ring 32, if the locking pin 33 is inserted into the corresponding locking slot 351, the rotating ring 32 can no longer rotate inside the fixed ring 31, and thus the rotating ring 32 locks the fixed rope 2. When the locking pin 33 is pulled out, the rotating ring 32 can rotate, and the fixed rope 2 can resume free movement in the through groove 36.

[0052] In a preferred embodiment, as shown in the appendix Figure 4 As shown, the moving mechanism 7 includes: a fixed base 71 and a rotating screw 72.

[0053] Both the fixed worktable 1 and the scanning support table 4, which are far from the anesthesia mask 5, are provided with movable slots 73. The fixed seat 71 is fixedly installed at the bottom of the tail fixing frame 6. The fixed seat 71 passes through the movable slot 73. The rotating screw 72 is threadedly connected to the fixed seat 71. One end of the rotating screw 72 is fixedly installed with a knob 722 through the connecting rod 721 that passes through the movable slot 73. The other end of the rotating screw 72 is rotatably connected to the movable slot 73. This allows the rotating screw 72 connected to the connecting rod 721 to be driven by rotating the knob 722. As a result, the fixed seat 71 moves along the axis of the rotating screw 72 within the movable slot 73, thereby adjusting the position of the tail fixing frame 6. This changes the position of the tail fixing frame 6 holding the small animal's tail, allowing for adjustment of the position for intravenous injection or blood draw.

[0054] One axis of the rotating screw 72 is directed toward the anesthesia mask 5.

[0055] In a preferred embodiment, as shown in the appendix Figure 4 As shown, the tail fixing frame 6 includes a fixing base frame 61 and a clamping frame 62. One end of the fixing base frame 61 is rotatably connected to the clamping frame 62 via a hinge, and the other end of the fixing base frame 61 is snapped into the clamping frame 62 via a buckle. A lower soft pad 63 and an upper soft pad 64 are fixedly installed on the side of the fixing base frame 61 and the clamping frame 62 that are close to each other. The lower soft pad 63 and the upper soft pad 64 are in contact, and a groove 65 is provided on the side of the lower soft pad 63 and the upper soft pad 64 that are in contact with each other. This allows the tail of the small animal to be placed in the groove 65 between the lower soft pad 63 and the upper soft pad 64 for fixing. The materials of the lower soft pad 63 and the upper soft pad 64 are soft, which is convenient for protecting the tail of the small animal.

[0056] In a preferred embodiment, as shown in the appendix Figure 1 Appendix Figure 2 and attached Figure 3As shown, the anesthesia mask 5 is semi-elliptical in shape. One side of the anesthesia mask 5 is rotatably connected to the scanning support stage 4 via a hinge, and the other side of the anesthesia mask 5 is snapped into the scanning support stage 4 via a buckle.

[0057] The external air inlet hose 51 can adjust the supply of anesthetic gas. By using the rubber ring or transparent dressing inside the anesthesia mask 5 to fix the animal's head and seal the anesthetic gas, a rapid and efficient gas anesthesia operation can be achieved. The structure is simple and compact, highly practical, and can be equipped with masks of various sizes to meet the needs of small animals of different sizes, which facilitates experimental operation. It solves the problems of high technical requirements and complex operation of gas anesthesia for small animals in the prior art.

[0058] During anesthesia, the anesthesia mask 5 is placed on the face of the small animal and fixed in place, while the air inlet hose 51 and the anesthesia mask 5 do not rotate at will, ensuring that the anesthesia continues smoothly during the imaging process and that the anesthesia operation does not affect the imaging effect.

[0059] In a preferred embodiment, as shown in the appendix Figure 1 and attached Figure 4 As shown, the material of the scanning support stage 4 is set to a low-density material.

[0060] Among them, the scanning support stage 4 uses a foam support stage, which utilizes its low density to produce very good CT contrast with the small animal, thus enhancing the clarity of the CT scan; and the specific size and thickness of the scanning support stage 4 can be set according to the morphology of the live small animal to be tested.

[0061] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0062] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fixation device for continuous anesthesia and enhanced CT scanning of small animals, comprising a fixation worktable (1), characterized in that: The fixed workbench (1) is provided with a fixing rope (2) on its side. The fixing rope (2) is set on the side of the fixed workbench (1) by a locking knob (3). The end of the fixing rope (2) is provided with a spring clip (21) for restraining limbs. The upper surface of the fixed workbench (1) is provided with a scanning support table (4). The upper surface of one end of the scanning support stage (4) is provided with an anesthesia mask (5), and the anesthesia mask (5) is equipped with an air inlet hose (51) for introducing anesthetic gas. The scanning support stage (4) is attached to a tail fixing frame (6) at the end away from the anesthesia mask (5), and a moving mechanism (7) is provided between the tail fixing frame (6) and the fixed worktable (1).

2. The fixation device for continuous anesthesia and enhanced CT scanning of small animals according to claim 1, characterized in that: The locking knob (3) includes: a fixed ring (31), a rotating ring (32), and a locking pin (33); One side of the fixed ring (31) is fixedly installed on the side of the fixed workbench (1). The rotating ring (32) rotates inside the fixed ring (31). A limiting ring (34) is fixedly installed on the side of the fixed ring (31) away from the fixed workbench (1). A circular plate (35) is fixedly installed on the side of the rotating ring (32) close to the limiting ring (34). Several evenly distributed locking slots (351) are opened on the surface of the circular plate (35). The locking pin (33) passes through the limiting ring (34) and is inserted into a locking slot (351). A through groove (36) is opened on the annular surface of the rotating ring (32) and the fixed ring (31). The fixing rope (2) passes through the through groove (36). A rotating handle (352) that rotates at the center of the limiting ring (34) is fixedly installed on the surface of the circular plate (35).

3. The fixation device for continuous anesthesia and enhanced CT scanning of small animals according to claim 1, characterized in that: The moving mechanism (7) includes: a fixed base (71) and a rotating screw (72). The fixed worktable (1) and scanning support table (4) away from the anesthesia mask (5) are both provided with moving slots (73). The fixed seat (71) is fixedly installed at the bottom of the tail fixed frame (6). The fixed seat (71) passes through the moving slot (73). The rotating screw (72) is threadedly connected to the fixed seat (71). One end of the rotating screw (72) is fixedly installed with a knob (722) through a connecting rod (721) that passes through the moving slot (73). The other end of the rotating screw (72) is rotatably connected to the moving slot (73).

4. The fixation device for continuous anesthesia and enhanced CT scanning of small animals according to claim 1, characterized in that: The tail fixing frame (6) includes a fixing base frame (61) and a clamping frame (62). One end of the fixing base frame (61) is rotatably connected to the clamping frame (62) via a hinge. The other end of the fixing base frame (61) is snapped into the clamping frame (62) via a buckle. A lower soft pad (63) and an upper soft pad (64) are fixedly installed on the side of the fixing base frame (61) and the clamping frame (62) that are close to each other. The lower soft pad (63) is in contact with the upper soft pad (64), and a groove (65) is provided on the side of the lower soft pad (63) that is in contact with the upper soft pad (64).

5. The fixation device for continuous anesthesia and enhanced CT scanning of small animals according to claim 1, characterized in that: The anesthesia mask (5) is semi-elliptical in shape. One side of the anesthesia mask (5) is rotatably connected to the scanning support stage (4) via a hinge, and the other side of the anesthesia mask (5) is snapped into the scanning support stage (4) via a buckle.

6. The fixation device for continuous anesthesia and enhanced CT scanning of small animals according to claim 1, characterized in that: The scanning support stage (4) is made of a low-density material.

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