Urinary catheterization device for laboratory animals
By combining a V-shaped operating table with various fixation components, the problems of unstable fixation, poor body position control, and animal stress in experimental animals have been solved, achieving rapid, firm, and comfortable fixation, and improving the efficiency and success rate of urinary catheterization.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI SIGNNO MEDICAL RES CO LTD
- Filing Date
- 2025-06-27
- Publication Date
- 2026-06-12
Smart Images
Figure CN224345036U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of biological research, and in particular to a urinary catheterization device for laboratory animals. Background Technology
[0002] In biomedical research, drug development, and veterinary clinical practice, urinary catheterization of laboratory animals (such as rats, mice, and rabbits) is a common and important technique. Catheterization is primarily used to collect sterile urine samples, perform bladder irrigation, insert urethral catheters, monitor kidney function, or study models of urinary system diseases. To ensure the accuracy, safety, and reproducibility of the catheterization procedure, the laboratory animal needs to be kept in a stable, specific position (usually supine) during the procedure, with full exposure of the perineum and urethral opening area.
[0003] Currently, animal restraint in laboratory settings primarily relies on manual manipulation or the use of simple restraint devices. Common restraint devices are mostly flat structures, used in conjunction with straps, tape, or simple clamps to bind the animal's torso and limbs. These methods can restrict animal movement to some extent, providing a basic condition for manipulation. However, existing animal restraint methods and devices have many significant problems and limitations in practical applications:
[0004] Unstable and inconvenient to operate: Flat-panel structures are difficult to effectively conform to the natural supine curve of animals (especially small rodents), making it easy for animals to slide, twist, or struggle, especially when struggling. Relying solely on straps or tape for fixation is not only cumbersome and time-consuming, but also makes it difficult to precisely control the binding force; too loose and it's insecure, too tight and it may cause stress or injury to the animal. When performing delicate catheterization procedures (such as locating the urethral opening and inserting the catheter), the operator often needs to be distracted to maintain the animal's position, affecting concentration and success rate.
[0005] Poor body position control and insufficient exposure: Existing devices are difficult to maintain the ideal supine position of experimental animals (especially those with rounder abdomens). Animals tend to tilt to the sides or sink in, resulting in the perineum and urethral opening area not being fully and stably exposed in the operating field of view, which increases the difficulty and failure rate of catheterization.
[0006] Animal stress and poor comfort: Hard plates, overly tight restraints, or clamps can easily compress the animal's body, causing localized discomfort or even pain, triggering strong struggles and stress responses. Violent struggles not only increase operational risks (such as bites or scratches to the operator, or accidental animal injury), but also affect physiological indicators (such as blood pressure, heart rate, and hormone levels), interfering with the accuracy of experimental results, especially in experiments requiring stable physiological states. Furthermore, existing head restraint methods are often cumbersome or compressive, further exacerbating the animal's discomfort.
[0007] Adaptability and efficiency issues: Different breeds, sizes, or conditions of animals may require different restraint methods. Existing restraint devices typically lack the ability to be quickly adjusted and adapted to different animals, resulting in poor versatility. Furthermore, the processes of restraint and derescue are inefficient, especially in large-scale animal experiments or scenarios requiring repeated procedures.
[0008] Therefore, there is an urgent need in this field to develop a novel catheterization fixation device for laboratory animals. This device should effectively solve the above-mentioned problems, namely: to achieve rapid, secure, and comfortable supine fixation of laboratory animals (especially small animals) during catheterization; to stably maintain the ideal body position and ensure full exposure of the perineum and urethral opening; to minimize animal stress and ensure animal welfare and the reliability of experimental data; and to have good ease of operation and adaptability to animals of different body sizes, thereby improving the efficiency and success rate of catheterization. Utility Model Content
[0009] The purpose of this invention is to provide a urinary catheterization device for laboratory animals to solve the problems existing in the prior art.
[0010] To achieve the above objectives, this utility model provides the following solution:
[0011] This utility model provides a urinary catheterization device for laboratory animals, comprising:
[0012] The operating table has a V-shaped or inverted trapezoidal cross-section.
[0013] The main fixing components are disposed on both sides of the upper part of the operating table;
[0014] A head fixing assembly is hinged to the front end of the operating table and has a locking buckle between it and the side of the operating table.
[0015] A tail-end fixing component is disposed at the rear end of the operating table.
[0016] Preferably, the bottom surface of the operating table is detachably provided with a silicone pad.
[0017] Preferably, the bottom of the operating table is provided with a counterweight base.
[0018] Preferably, the main fixing component includes fixing airbags, and multiple fixing airbags are fixed side by side on the upper two sides of the operating table. The fixing airbags are connected to positive and negative pressure air pumps through air pipes.
[0019] Preferably, the surface of the fixed airbag is provided with a wear-resistant layer.
[0020] Preferably, the head fixing assembly includes an arc-shaped fixing ring, both ends of which are hinged to the operating table. A flexible mesh cage is provided between the arc-shaped fixing ring and the operating table, and the buckle is provided on the side of the arc-shaped fixing ring.
[0021] Preferably, the tail fixing component includes an elastic clip with locking posts at both ends, and a locking groove at the bottom rear end of the operating table, the locking groove cooperating with the locking posts.
[0022] The present invention achieves the following beneficial technical effects compared to the prior art:
[0023] This invention provides a urinary catheterization device for laboratory animals. The device utilizes a V-shaped or inverted trapezoidal structure on the operating table to effectively limit lateral slippage and naturally guide the animal to maintain a stable supine position. The airbag fixation component achieves uniform, secure, and adjustable restraint of the animal's torso through flexible inflation and deflation, significantly reducing localized pressure and stress. The head hinged locking design facilitates quick placement and fixation of the animal's head while avoiding rigid pressure. The tail elastic clamp component ensures the tail is reliably lifted and secured, fully exposing the operating area. The silicone pad at the bottom enhances animal comfort and friction, while the counterweight base ensures the overall stability of the device. These technical features work synergistically to achieve rapid and reliable animal fixation, full exposure of the operating area, significantly reduced animal stress, and a significant improvement in overall operational efficiency and experimental success rate. Attached Figure Description
[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0025] Figure 1 Top view of the experimental animal urinary catheterization device provided by this utility model;
[0026] Figure 2 A side view of the experimental animal catheterization device provided by this utility model. Detailed Implementation
[0027] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages). In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0028] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0030] The purpose of this invention is to provide a urinary catheterization device for laboratory animals to solve the problems existing in the prior art.
[0031] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0032] Example 1:
[0033] This embodiment provides a urinary catheterization device for laboratory animals, such as... Figure 1 and 2 As shown, it includes:
[0034] The operating table 1 has a V-shaped cross-section and can be made of materials such as engineering plastics or stainless steel. The V-shaped structure design allows the animal to be fixed on the operating table 1 in a lying position, which facilitates subsequent operations. Of course, in other embodiments, the operating table can also adopt an inverted trapezoidal structure, which can achieve the same effect.
[0035] Main fixing component 2 is located on both sides of the upper part of the operating table 1, and is mainly used to fix the animal's limbs and torso.
[0036] The head fixing component 3 is hinged to the front end of the operating table 1 and has a latch 4 between it and the side of the operating table 1, so as to facilitate fixing the animal's head.
[0037] Tail fixing component 5 is located at the rear end of the operating table 1 to fix the animal's tail.
[0038] As one implementation, the bottom surface of the operating table 1 is detachably equipped with a silicone pad to enhance animal comfort and friction, prevent the animal from slipping, and the detachable design can be fixed by snaps or other means for easy replacement.
[0039] As one implementation method, the bottom of the operating table 1 is provided with a counterweight base 6, which can ensure the stability of the operating table 1.
[0040] In one implementation, the main fixation component 2 includes fixation airbags 21. Multiple fixation airbags 21 are fixed side by side on the upper two sides of the operating table 1. The fixation airbags 21 are connected to positive and negative pressure air pumps 23 through air tubes 22. After the fixation airbags 21 are inflated, they can compress the animal's limbs and torso to achieve a fixation effect. Fixing by inflation and compression can avoid the harm caused to the animal by traditional fixation methods such as straps and pressure plates, and greatly reduce local pressure and stress.
[0041] As one implementation, the surface of the fixation airbag 21 is provided with a wear-resistant layer, which can prevent animals from scratching or biting the fixation airbag 21.
[0042] In one embodiment, the head fixing component 3 includes an arc-shaped fixing ring 31, both ends of which are hinged to the operating table 1. A flexible mesh cage 32 is provided between the arc-shaped fixing ring 31 and the operating table 1. A lock 4 is provided on the side of the arc-shaped fixing ring 31. The arc-shaped fixing ring 31 can limit the animal's neck, so that the animal's head is covered by the flexible mesh cage 32, preventing the animal from struggling and biting.
[0043] In one embodiment, the tail fixing component 5 includes an elastic clip 51, which is an arc-shaped metal part with a certain elasticity. The two ends of the elastic clip 51 are provided with locking posts 52, and the bottom rear end of the operating table 1 is provided with a locking groove 53. The locking groove 53 cooperates with the locking posts 52 to fix and limit the animal's tail, so as to prevent the tail from shaking and affecting the insertion of the catheter.
[0044] 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.
[0045] It should be noted that the components mentioned in the above embodiments are all general standard parts or components known to those skilled in the art. Their structures and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods.
[0046] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.
Claims
1. A urinary catheterization device for laboratory animals, characterized in that: include: The operating table has a V-shaped or inverted trapezoidal cross-section. The main fixing components are disposed on both sides of the upper part of the operating table; A head fixing assembly is hinged to the front end of the operating table and has a locking buckle between it and the side of the operating table. A tail-end fixing component is disposed at the rear end of the operating table.
2. The experimental animal urinary catheterization device according to claim 1, characterized in that: The bottom surface of the operating table is detachably equipped with a silicone pad.
3. The experimental animal urinary catheterization device according to claim 1, characterized in that: The bottom of the control panel is equipped with a counterweight base.
4. The experimental animal urinary catheterization device according to claim 1, characterized in that: The main fixing component includes fixing airbags, and multiple fixing airbags are fixed side by side on both sides of the upper part of the operating table. The fixing airbags are connected to positive and negative pressure air pumps through air pipes.
5. The experimental animal urinary catheterization device according to claim 4, characterized in that: The surface of the fixed airbag is provided with a wear-resistant layer.
6. The experimental animal urinary catheterization device according to claim 1, characterized in that: The head fixing assembly includes an arc-shaped fixing ring, both ends of which are hinged to the operating table. A flexible mesh cage is provided between the arc-shaped fixing ring and the operating table, and the buckle is provided on the side of the arc-shaped fixing ring.
7. The experimental animal urinary catheterization device according to claim 1, characterized in that: The tail fixing component includes an elastic clip with locking posts at both ends, and a locking groove at the bottom rear end of the operating table, which cooperates with the locking posts.