Medical catheter clamping device

Abstract

This utility model discloses a medical catheter clamping device, comprising: a mounting base, detachably mounted in a pre-installation position, the mounting base including a first fork arm and a second fork arm, the first fork arm and the second fork arm being connected to each other at a bend, and having openings on opposite side surfaces, each having a first hinge groove and a second hinge groove; a first clamping arm, including a first hinge end and a first free end, the first hinge end being able to slide into or out of the first hinge groove, and being able to rotate relative to the first fork arm after sliding in; and a second clamping arm, including a second hinge end and a portion overlapping the first clamping arm, the second hinge end being able to slide into or out of the second hinge groove, and being able to rotate relative to the second fork arm after sliding in. This utility model provides a medical catheter clamping device that, through a sliding and rotating detachable connection between the clamping arm and the mounting base, enables rapid assembly and disassembly, facilitating stable clamping of the catheter during use, and allowing for complete removal of the device when not in use, improving the flexibility of clinical operations and effectively saving space.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and more specifically, to a medical catheter clamping device. Background Technology

[0002] In modern medicine, catheters, as fundamental medical devices, are widely used in various diagnostic and treatment scenarios, such as urinary catheters for urination, gastric tubes for nutritional support, intravenous infusion tubes for drug delivery, and ventilator tubes for assisted breathing. These catheters typically require clamping devices for fixation during clinical use to prevent slippage, entanglement, or accidental displacement, ensuring the continuity and safety of the treatment process. For ease of operation and adjustment, these clamping devices are often installed on the edge of the operating table, bed railings, or IV stands.

[0003] However, most existing clamping devices are designed for long-term fixed installation, occupying space even when the catheter is not in use. They are also prone to mechanical noise due to shaking, disrupting the quiet environment of the ward. Furthermore, their structures often have noticeable protrusions, which can easily cause bumps and knocks by medical staff or patients, posing a safety hazard. Therefore, developing a catheter clamping device that is quick-release, simple in structure, easy to use, and less likely to cause obstruction has become an important direction for clinical needs and medical device design optimization. Utility Model Content

[0004] This utility model aims to solve one of the technical problems in related technologies to a certain extent. To this end, the embodiments of this utility model propose a medical catheter clamping device, which achieves quick assembly and disassembly through a sliding and rotating detachable connection between the clamping arm and the mounting base. This facilitates stable clamping of the catheter during use and allows for complete removal of the device when not in use, improving the flexibility of clinical operations and effectively saving space.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: to provide a medical catheter clamping device, comprising: The mounting base is detachably installed in a pre-installation position. The mounting base includes a first fork arm and a second fork arm, which are connected to each other at the bend and have openings on their opposite side surfaces, which are respectively provided with a first hinge groove and a second hinge groove. The first clamping arm includes a first hinge end and a first free end. The first hinge end can slide into or out of the first hinge groove, and can rotate relative to the first fork arm after sliding into it. The second clamping arm includes a second hinge end and a portion that overlaps with the first clamping arm. The second hinge end can slide into or out of the second hinge groove, and can rotate relative to the second fork arm after sliding in. The first free end and the second hinged end of the second clamping arm overlap and lock together on the surface, so that the first clamping arm and the mounting base enclose a clamping space for clamping the medical catheter.

[0006] By adopting the above technical solution, this utility model has the following beneficial effects: This medical catheter clamping device detachably connects the first and second clamping arms to the mounting base via sliding rotation. This allows the clamping arm assembly to be quickly removed from the mounting base when not in use, reducing structural volume and protruding parts and avoiding the risk of impact. When in use, it can be quickly assembled to form a catheter clamping space, achieving stable positioning of the catheter.

[0007] Furthermore, the mounting base itself is designed to be detachably installed in pre-installed locations, such as operating tables, medical beds, and IV stands—common clinical equipment support structures—to meet the flexible arrangement needs of different scenarios. After the catheter is no longer in use, the mounting base, along with the clamping arm, can be removed as a whole, effectively freeing up space and avoiding the space occupation and noise problems caused by long-term exposure of the device.

[0008] In one possible implementation, the first clamping arm is bent into an arc-shaped profile near its first free end, and the second hinge end of the second clamping arm has an arc-shaped groove that mates with it. The arc-shaped profile and the arc-shaped groove cooperate to position the clamping arm. This arc-shaped mating structure enhances positioning stability and assembly guidance during clamping, improving the user experience and safety.

[0009] Compared with existing technologies, the above-mentioned technical solution, with its arc-shaped mating structure, ensures good locking of the clamping arm when closed, preventing the clamping arm from deviating from the preset position. This not only improves clamping stability but also reduces clamping instability caused by assembly errors. Furthermore, the arc-shaped groove and contour mating provide a clearer guide path for the clamping arm during assembly, simplifying the assembly process and effectively improving operational accuracy.

[0010] In one possible implementation, the second clamping arm has a protruding actuating part on the side away from the medical catheter, which drives the second clamping arm to rotate and release the catheter. The catheter can be easily released by manually actuating the part, making operation convenient and improving its practicality in medical settings.

[0011] Compared with existing technologies, the above-mentioned technical solution makes catheter release simpler and faster. Users can directly and manually complete the release operation through the toggle, without effort or extra operation, which significantly improves the response efficiency of medical personnel in emergency situations. At the same time, the release action is smoother and faster, avoiding the resistance or jamming that may exist during release in traditional designs, ensuring reliability in clinical use.

[0012] In one possible implementation, the first hinge end is provided with a first pivot, which is slidably rotated with the first hinge slot. The first pivot improves the fulcrum stability during the rotation of the clamping arm and facilitates a detachable design, thereby improving assembly efficiency and structural reliability.

[0013] Compared with existing technologies, the above technical solution, by adopting a sliding rotational engagement first pivot, can significantly improve the accuracy and stability of the clamping arm rotation, prevent adverse effects caused by loosening or asymmetry during rotation, not only improve the structural stability of the clamping device, but also enhance the ease of assembly, reduce complex installation steps, and improve production and maintenance efficiency.

[0014] In one possible implementation, the second hinge end is provided with a second pivot, which is slidably rotatably engaged with the second hinge slot. This dual-pivot structure, with both the first and second pivots, enables both clamping arms to rotate and be disassembled, improving the overall flexibility and symmetrical operation of the machine.

[0015] Compared with existing technologies, the above-mentioned technical solution provides greater flexibility and symmetry through a dual-pivot structure, enabling the two clamping arms to rotate and disassemble synchronously. During operation, users can more easily adjust the angle of the clamping arms to clamp or release the catheter, making the clamping device more ergonomic. This greatly improves the comfort and efficiency of use, especially when symmetrical operation or rapid adjustment is required.

[0016] In one possible implementation, the mounting base is fixedly connected to a connector, and a retainer is provided at the pre-installation position. The connector and the retainer are detachably connected. The retainer can be fixed to the pre-installation position by means of adhesive lamps or the like. The detachable connection allows the clamping device to be quickly removed or replaced, improving operational flexibility and avoiding wear or space obstruction caused by long-term fixation.

[0017] Compared with existing technologies, the above technical solution provides greater flexibility, allowing users to quickly remove or replace the clamping device according to actual needs. After disassembly, the empty part of the clamping device no longer occupies space, avoiding space occupation, wear and tear, or unnecessary obstacles caused by long-term fixation of the equipment. The detachable design can also effectively avoid the impact of long-term fixation on medical equipment, such as affecting the cleanliness and service life of the equipment due to aging of the mounting base or dust accumulation.

[0018] In one possible implementation, the mounting base is provided with a slot, and the connector is installed in the slot.

[0019] Compared with existing technologies, the above-mentioned technical solution simplifies the assembly operation by using the slot structure, enabling the connectors to be precisely aligned and thus completing the assembly quickly. At the same time, the slot structure design ensures stability and robustness, effectively withstanding certain pressure and torque in actual use, preventing the connectors from loosening or falling off. The slot design also facilitates subsequent disassembly and maintenance, reducing operational inconvenience caused by disassembly difficulties and improving the ease of equipment maintenance.

[0020] In one possible implementation, the mounting base is provided with a first fastening hole, and the connector is provided with a corresponding second fastening hole. A fixed connection between the mounting base and the connector is achieved by fasteners passing through the first and second fastening holes. The fasteners, such as bolts, provide reliable mechanical connection force, ensuring the stability and reusability of the clamping device during operation.

[0021] Compared with existing technologies, the above-mentioned fastening connection method can enhance the mechanical strength and stability of the clamping device, avoid the clamping device from loosening due to vibration or external force during operation, thereby improving the service life and reliability of the equipment. Due to the reusability of the fasteners, this design can also provide long-term safety assurance in different application environments and adapt to the needs of repeated installation and disassembly.

[0022] In one possible implementation, the second fastening hole is a countersunk hole structure to accommodate the fastener head and form a flush mounting surface. The countersunk hole design eliminates protruding parts on the installed surface, reducing the risk of impact and improving the overall aesthetics and safety of the equipment.

[0023] Compared with existing technologies, the above-mentioned technical solution uses a countersunk hole design that makes the fastener flush with the mounting surface, effectively reducing the number of protruding parts that may appear on the surface of the equipment. This reduces the inconvenience or potential safety risks caused by touching the protruding parts during operation. In addition, this design makes the appearance of the equipment simpler and more beautiful, improving the overall visual effect.

[0024] In one possible implementation, the connector is provided with a lateral groove for sliding and limiting engagement with the retainer. This groove-limiting structure facilitates precise guidance of the clamping device in the installation direction, improving installation efficiency and avoiding operational errors.

[0025] Compared with existing technologies, the above-mentioned technical solution effectively improves the guiding accuracy during the installation process by using the sliding groove limiting structure, reduces the error during manual docking, and enables the clamping device to be installed quickly and accurately in the predetermined position, reducing the risk of failure caused by improper installation. The use of the sliding groove structure can also reduce the need for additional alignment or adjustment steps, making the installation process more efficient. Operators can quickly complete the assembly, saving time and improving work efficiency. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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.

[0027] Figure 1 This is a perspective view of the clamping device in an embodiment of the present utility model.

[0028] Figure 2 This is a schematic diagram of the clamping device in an embodiment of the present invention.

[0029] Figure 3 This is a three-dimensional structural diagram of the clamping device in an embodiment of this utility model.

[0030] Figure 4 This is an exploded view of the clamping device in an embodiment of this utility model.

[0031] Figure 5 This is a perspective view of the mounting base in an embodiment of this utility model.

[0032] Figure 6 This is a top view of the clamping device in an embodiment of the present invention.

[0033] Figure 7 for Figure 6 A cross-sectional view along line AA in the middle.

[0034] Figure 8 This is a perspective view of the first clamping arm in an embodiment of this utility model.

[0035] Figure 9 This is a perspective view of the second clamping arm in an embodiment of this utility model.

[0036] Figure 10 This is a perspective view of the connector in an embodiment of the present utility model.

[0037] Explanation of the labels in the diagram: 1. Mounting base; 2. First clamping arm; 3. Second clamping arm; 4. Connector; 5. Conduit; 11. First fork arm; 12. Second fork arm; 13. Slot; 14. First fastening hole; 11a. First hinge groove; 12a. Second hinge groove; 21. First free end; 22. First hinged end; 23. Actuating part; 21a. Arc-shaped profile; 22a. First pivot; 31. Second free end; 32. Second hinged end; 32a, Second pivot; 32b, Arc-shaped groove; 41. Lateral slide groove; 42. Second fastening hole. Detailed Implementation

[0038] This application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this application. Of course, they are merely examples and are not intended to limit this application. Furthermore, reference numerals and / or letters may be repeated in different instances. Such repetition is for the purpose of simplicity and clarity and does not in itself indicate a relationship between the various embodiments and / or settings discussed.

[0039] Furthermore, 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 number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of the application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. In the description of this application, "several" means at least one, such as one, two, etc., unless otherwise explicitly specified.

[0040] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of this application. When used herein, the singular forms “a,” “an,” and “the” are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprising” and / or “including,” when used in this specification, identify the presence of the stated features, integers, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups. When used herein, the term “and / or” includes any and all combinations of the associated listed items.

[0041] Unless otherwise stated, a singular term may include a plural term and should not be understood as having a quantity of one.

[0042] The terms “comprising,” “including,” “containing,” “having,” “comprising,” or other variations thereof are intended to cover non-closed inclusion, and no distinction is made between these terms. The term “comprising” means additional steps and components that may be added without affecting the final result. The term “comprising” also includes the terms “composed of” and “substantially composed of.” The compositions and methods / processes of this application comprise, consist of, and substantially consist of the essential elements and limitations described herein, as well as any additional or optional ingredients, components, steps, or limitations described herein. No distinction is made between the terms “efficacy,” “performance,” “effect,” and “potency” herein.

[0043] This utility model provides a medical catheter clamping device, comprising: The mounting base is detachably installed in a pre-installation position. The mounting base includes a first fork arm and a second fork arm, which are connected to each other at the bend and have openings on their opposite side surfaces, which are respectively provided with a first hinge groove and a second hinge groove. The first clamping arm includes a first hinge end and a first free end. The first hinge end can slide into or out of the first hinge groove, and can rotate relative to the first fork arm after sliding into it. The second clamping arm includes a second hinge end and a portion that overlaps with the first clamping arm. The second hinge end can slide into or out of the second hinge groove, and can rotate relative to the second fork arm after sliding in. The first free end and the second hinged end of the second clamping arm overlap and lock together on the surface, so that the first clamping arm and the mounting base enclose a clamping space for clamping the medical catheter.

[0044] As a preferred embodiment, the first clamping arm is bent to form an arc-shaped profile near the first free end, and the second hinge end surface of the second clamping arm is provided with an arc-shaped groove that matches it. The arc-shaped profile and the arc-shaped groove cooperate with each other for positioning.

[0045] As a preferred embodiment, the second clamping arm has a protruding actuating part on the side away from the medical catheter, which is used to drive the second clamping arm to rotate to release the catheter.

[0046] As a preferred embodiment, the first hinge end is provided with a first pivot, and the first pivot and the first hinge groove are slidably rotated together.

[0047] As a preferred embodiment, the second hinge end is provided with a second pivot, and the second pivot and the second hinge groove are slidably rotated together.

[0048] As a preferred embodiment, the mounting base is fixedly connected to a connector, and a retainer is provided at the pre-installation position. The connector and the retainer are detachably connected.

[0049] As a preferred embodiment, the mounting base is provided with a slot, and the connector is installed in the slot.

[0050] As a preferred embodiment, the mounting base is provided with a first fastening hole, and the connector is provided with a corresponding second fastening hole. By passing a fastener through the first fastening hole and the second fastening hole, a fixed connection between the mounting base and the connector is achieved.

[0051] As a preferred embodiment, the second fastening hole is a countersunk hole structure to accommodate the fastener head and form a flush mounting surface.

[0052] As a preferred embodiment, the connector is provided with a lateral sliding groove, which is used to slide and limit the insertion of the retainer.

[0053] The technical solution of this utility model will be further elaborated below: like Figure 1-10 As shown, this embodiment discloses a medical catheter 5 clamping device, including a mounting base 1, a first clamping arm 2, and a second clamping arm 3. The mounting base 1 is detachably mounted on a pre-installation position, which can be the edge of an operating table, a medical bed railing, or an IV stand, etc. The mounting base 1 includes a first fork arm 11 and a second fork arm 12, which are fixedly connected at the bend to form a U-shaped structure. Openings are respectively provided on the opposite side surfaces to form a first hinge groove 11a and a second hinge groove 12a, which are used to limit the insertion of the first clamping arm 2 and the second clamping arm 3 and achieve rotational engagement.

[0054] Specifically, in combination Figure 8 As shown, the first clamping arm 2 includes a first hinged end 22 and a first free end 21. The two sides of the first hinged end 22 extend outward to form a first pivot 22a, which is slidably inserted into a first hinge groove 11a and rotates about the first pivot 22a after insertion. The first free end 21 extends inward to cooperate with the second clamping arm 3 to clamp the conduit 5. The first clamping arm 2 bends outward near the free end to form an arcuate profile 21a for guidance and positioning.

[0055] Further, in this embodiment, the two opposite ends of the first clamping arm 2 are a first hinge end 22 and a first free end 21, respectively. The first hinge end 22 is used to achieve a hinged connection with the mounting base 1, and the first free end 21 serves as the clamping part of the conduit 5. A first fork arm 11 is provided on one side of the mounting base 1. The inner side of the first fork arm 11 has an opening extending towards the second fork arm 12, which communicates with the first hinge groove 11a. To achieve smooth assembly operation, the width of the opening gradually decreases from the outside to the inside along its extension direction, forming a guide groove structure. During use, the operator can slide the first pivot 22a provided on the first hinge end 22 of the first clamping arm 2 along the direction of the opening, so that it gradually embeds into the end position of the first hinge groove 11a. At this end, the first pivot 22a achieves a limiting engagement through a locking and positioning structure, and can rotate and swing around its own axis, so that the first clamping arm 2 can open and close around the first fork arm 11.

[0056] Similarly, the two opposite ends of the second clamping arm 3 are the second hinge end 32 and the second free end 31, respectively. The second hinge end 32 is used to achieve a detachable hinged connection with the second fork arm 12 of the mounting base 1. The other side of the mounting base 1 has a second fork arm 12, which has a similar structure to the first fork arm 11. It also has a gradually narrowing guide opening on the side facing the first fork arm 11, extending into the internal second hinge groove 12a to guide the second pivot 32a on the second clamping arm 3 into place and position it. During assembly, the operator can align the second pivot 32a of the second clamping arm 3 with the opening of the second fork arm 12 and insert it, then slide it into the end of the second hinge groove 12a with the help of the guide structure, thus forming a rotatable connection with the mounting base 1, giving the second clamping arm 3 a certain opening angle and degree of freedom. This design simplifies the assembly process and enhances the reliability of the connection and the smoothness of rotation.

[0057] After the first clamping arm 2 and the second clamping arm 3 have completed their insertion and positioning with the mounting base 1, the first free end 21 will approach and overlap with the clamping end of the second clamping arm 3 in space, forming an effective clamping through friction or structural locking, so that they together form a stable clamping space for the catheter 5, ensuring reliable positioning of the medical catheter 5 in clinical use.

[0058] Specifically, the second clamping arm 3 has a protruding actuating part 23 on the side away from the medical catheter 5, which is used to drive the second clamping arm 3 to rotate so as to release the catheter 5.

[0059] Specifically, in combination Figure 6-7As shown, the arc-shaped contour 21a of the first free end 21 engages with the arc-shaped groove 32b on the second hinge end 32 of the second clamping arm 3, achieving surface overlap locking when the clamping arm is closed, enhancing positioning reliability and structural stability, and forming a closed clamping space for clamping the conduit 5.

[0060] Specifically, in combination Figure 2 and Figure 10 As shown, the mounting base 1 is fixedly connected to a connector 4, which is used to achieve the detachable connection between the mounting base 1 and the pre-installation position. A retainer (not shown in the figure) is pre-set at the pre-installation position, which is fixed by means of adhesive, screws, or straps. The connector 4 and the retainer have a sliding fit structure for easy assembly and disassembly. The mounting base 1 has a slot 13, into which the connector 4 can be directly inserted for positioning. To enhance the connection strength, the mounting base 1 also has a first fastening hole 14, and the connector 4 has a corresponding second fastening hole 42. The two are fixed by fasteners such as screws. The second fastening hole 42 has a countersunk hole structure, allowing the screw head to be completely recessed into the hole, resulting in a flat surface after installation and preventing scratches or bumps to the operator. The connector 4 also has a lateral sliding groove 41 for sliding engagement with the protruding part of the retainer, achieving a limiting lock. This sliding limiting engagement provides guidance during insertion and prevents lateral swaying of the clamping device, improving the overall structural integrity and reliability.

[0061] 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 application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0062] 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.

[0063] The embodiments described above are merely illustrative of several implementation methods of this application, intended to facilitate a detailed understanding of the technical solutions of this application, but should not be construed as limiting the scope of protection of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the scope of protection of this application. It should be understood that technical solutions obtained by those skilled in the art based on the technical solutions provided in this application through logical analysis, reasoning, or limited experimentation are all within the scope of protection of the appended claims. Therefore, the scope of protection of this patent application should be determined by the content of the appended claims, and the specification can be used to interpret the content of the claims.

Claims

1. A medical catheter clamping device, characterized in that, include: Mounting base (1), which is detachably installed in a pre-installation position, the mounting base (1) includes a first fork arm (11) and a second fork arm (12), the first fork arm (11) and the second fork arm (12) are connected to each other at the bend, and the side surface openings arranged opposite to each other are respectively provided with a first hinge groove (11a) and a second hinge groove (12a). The first clamping arm (2) includes a first hinge end (22) and a first free end (21). The first hinge end (22) can slide into or out of the first hinge groove (11a). After sliding into it, it can rotate relative to the first fork arm (11). The second clamping arm (3) includes a second hinge end (32) and a portion that overlaps with the first clamping arm (2). The second hinge end (32) can slide into or out of the second hinge groove (12a). After sliding in, it can rotate relative to the second fork arm (12). The first free end (21) and the second hinge end (32) of the second clamping arm (3) overlap and lock on the surface, so that the first clamping arm (2) and the mounting base (1) enclose a clamping space for clamping the medical catheter (5).

2. The medical catheter clamping device according to claim 1, characterized in that: The first clamping arm (2) is bent at a position near the first free end (21) to form an arc-shaped profile (21a). The second hinge end (32) of the second clamping arm (3) is provided with an arc-shaped groove (32b) that matches it. The arc-shaped profile (21a) and the arc-shaped groove (32b) cooperate with each other for positioning.

3. The medical catheter clamping device according to claim 1, characterized in that: The second clamping arm (3) has a protruding actuating part (23) on the side away from the medical catheter (5) for driving the second clamping arm (3) to rotate to release the catheter (5).

4. The medical catheter clamping device according to claim 1, characterized in that: The first hinge end (22) is provided with a first pivot (22a), and the first pivot (22a) and the first hinge groove (11a) are slidably rotated together.

5. A medical catheter clamping device according to claim 4, characterized in that: The second hinge end (32) is provided with a second pivot (32a), and the second pivot (32a) is slidably rotated with the second hinge groove (12a).

6. A medical catheter clamping device according to claim 1, characterized in that: The mounting base (1) is fixedly connected to a connector (4), and a retainer is provided at the pre-installation position. The connector (4) and the retainer are detachably connected.

7. A medical catheter clamping device according to claim 6, characterized in that: The mounting base (1) is provided with a slot (13), and the connector (4) is installed in the slot (13).

8. A medical catheter clamping device according to claim 7, characterized in that: The mounting base (1) is provided with a first fastening hole (14), and the connector (4) is provided with a corresponding second fastening hole (42). By passing fasteners through the first fastening hole (14) and the second fastening hole (42), a fixed connection between the mounting base (1) and the connector (4) is achieved.

9. A medical catheter clamping device according to claim 8, characterized in that: The second fastening hole (42) is a countersunk hole structure to accommodate the head of the fastener and form a flush mounting surface.

10. A medical catheter clamping device according to claim 6, characterized in that: The connector (4) is provided with a lateral sliding groove (41), which is used to slide and limit the engagement with the retention piece.

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