Medical hand-held grinding wheel

Abstract

The present application belongs to the technical field of medical apparatus and instruments, and particularly relates to a medical hand-held grinding wheel, which comprises a handle and a plurality of grinding wheels, one end of the handle is provided with a mounting ring, the mounting ring is fixedly connected with threaded columns, the number of the threaded columns is two or more, each threaded column is threadedly connected with a locking nut, the central hole of the grinding wheel can penetrate the threaded column, and the diameter of the locking nut is larger than the hole diameter of the central hole of the grinding wheel. In the present application, the grinding wheel penetrates the threaded column and is fixed on the threaded column by the locking nut. When in use, a nurse holds the handle, places the neck of an ampoule bottle in the mounting ring and makes it abut against the edge of the grinding wheel, rotates the ampoule bottle or rotates the mounting ring through the handle, so as to quickly leave a scratch on the neck of the ampoule bottle, avoids the nurse directly holding the grinding wheel, and thus avoids scratching the hand. Moreover, the grinding wheel in the present application is fixedly installed on the threaded column and is not easy to be lost.

Description

Technical Field

[0001] This invention belongs to the field of medical device technology, specifically relating to a medical handheld grinding wheel. Background Technology

[0002] Ampoules are heat-sealed hard glass containers commonly used to store injectable medications, vaccines, serums, etc. The neck of an ampoule breaks under pressure to extract the medication. However, breaking an ampoule by hand is difficult; therefore, a medical abrasive wheel is used. First, a score is made on the neck of the ampoule, and then the nurse breaks the neck along the score. However, current medical abrasive wheels are relatively small, generally around 2cm in outer diameter and 0.18–3.0mm thick. Therefore, nurses are prone to cutting their hands, especially new nurses. Furthermore, the small size and thinness of the abrasive wheel make it relatively easy to lose. Summary of the Invention

[0003] The present invention aims to provide a medical handheld grinding wheel to solve the problem that existing medical grinding wheels can easily cut the hands during use.

[0004] To achieve the above objectives, the present invention provides a medical handheld grinding wheel, comprising a handle and several grinding wheels. One end of the handle is provided with a mounting ring, and a threaded post is fixedly connected to the mounting ring. The number of threaded posts is two or more, and each threaded post is threadedly connected to a locking nut. The center hole of the grinding wheel can penetrate the threaded post, and the diameter of the locking nut is larger than the diameter of the center hole of the grinding wheel.

[0005] The working principle and beneficial effects of this solution are as follows: In this solution, the grinding wheel passes through the threaded post and is fixed to the post by a locking nut. During use, the nurse holds the handle, places the neck of the ampoule inside the mounting ring so that it abuts against the edge of the grinding wheel, and rotates the ampoule or the mounting ring via the handle, thus quickly leaving a scratch on the ampoule neck. This avoids the nurse directly holding the grinding wheel, thus preventing hand injuries. Furthermore, compared to using a single grinding wheel to cut a scratch, this solution uses multiple grinding wheels simultaneously to cut the neck, resulting in higher efficiency. Additionally, the grinding wheel in this solution is fixedly mounted on the threaded post, making it less likely to be lost.

[0006] Optionally, the number of mounting rings is two or more, the two or more mounting rings are arranged concentrically, adjacent two mounting rings are connected by a connecting rod, and the threaded posts on each mounting ring are staggered.

[0007] In this scheme, there are two or more mounting rings, and the two or more mounting rings are concentrically set. In this way, with the outer diameter of the grinding wheel remaining unchanged, the grinding wheel on one mounting ring is mounted on another mounting ring, thereby changing the size of the space enclosed by multiple grinding wheels, and thus cutting bottlenecks with different outer diameters.

[0008] Optionally, the handle is provided with an extension portion, and the extension portion has a through hole for the neck of the ampoule to pass through.

[0009] In this design, the through hole on the extension allows the bottleneck to be inserted, so that the nurse can break the bottleneck with the handle without directly touching it, thus avoiding being stabbed.

[0010] Optionally, the mounting ring is fixedly connected to a connecting rod, and the connecting rod is detachably connected to the end of the handle near the mounting ring.

[0011] In this design, the connecting rod and the handle are detachably connected, so the mounting ring can be removed from the handle, allowing for individual replacement of either the mounting ring or the handle.

[0012] Optionally, the connecting rod is threaded to one end of the handle near the mounting ring.

[0013] In this design, the connecting rod is threaded to the end of the handle, thereby achieving a detachable connection between the connecting rod and the handle.

[0014] Optionally, the end of the connecting rod away from the mounting ring is provided with a connecting ear plate, and the end of the handle near the mounting ring is provided with a handle ear plate. Both the connecting ear plate and the handle ear plate are provided with mounting holes.

[0015] In this design, bolts are passed through the mounting holes on the connecting ear plate and the handle ear plate and engaged with nuts to fix the connecting ear plate and the handle ear plate together, thereby achieving a detachable connection between the connecting rod and the handle.

[0016] Optionally, a washer is fitted onto the threaded post, with the washer positioned between the grinding wheel and the lock nut.

[0017] In this design, the washer between the grinding wheel and the lock nut can distribute the pressure exerted by the lock nut on the grinding wheel, preventing the lock nut from loosening.

[0018] Optionally, two or more threaded posts on the mounting ring are evenly distributed along the circumference of the mounting ring.

[0019] In this design, two or more threaded posts are evenly distributed along the circumference of the mounting ring. This allows the nurse to cut the neck of the ampoule completely by rotating the ampoule or rotating the mounting ring by the handle with a small angle.

[0020] Optionally, a threading hole is provided at the end of the handle away from the mounting ring.

[0021] In this solution, nurses can tie one end of a thin rope to the handle through the thread hole, and then tie the other end of the rope to a certain part to prevent it from being lost.

[0022] Optionally, a plurality of protective arc plates are fixedly connected to the mounting ring, the protective arc plates correspond one-to-one with the threaded posts, the protective arc plates are concentric with the corresponding threaded posts, and a plurality of horizontal through grooves are formed on the protective arc plates.

[0023] In this design, the protective arc plate serves two purposes: first, it prevents the grinding wheel from colliding with objects such as tabletops, thus avoiding damage to the grinding wheel or the objects; second, it prevents the grinding wheel from scratching nurses, thereby improving the safety of grinding wheel use. Furthermore, in this design, when grinding wheels of different outer diameters are installed on the same threaded post, with the outer diameter of the grinding wheels gradually decreasing from top to bottom, when the outer diameter of the neck of the ampoule to be opened is large, the plate is inserted into the horizontal through groove on the protective arc plate until the plate is inserted between two adjacent grinding wheels. Then, the handle is flipped so that the threaded post faces downwards. In this way, the grinding wheel away from the mounting ring falls off, while the grinding wheel limited by the plate does not detach from the threaded post. This allows for quick changes to the cutting line diameter and avoids nurses manually removing the grinding wheel. Attached Figure Description

[0024] Figure 1 This is a perspective view of a medical handheld grinding wheel according to Embodiment 1 of the present invention;

[0025] Figure 2 This is a schematic diagram of the structure when the grinding wheel and the threaded post are separated in Embodiment 1 of the present invention;

[0026] Figure 3 This is a front view of a medical handheld grinding wheel according to Embodiment 1 of the present invention;

[0027] Figure 4 This is a front view of a medical handheld grinding wheel according to Embodiment 2 of the present invention;

[0028] Figure 5 This is a front view of a medical handheld grinding wheel in Embodiment 2 of the present invention when the grinding wheel is not shown.

[0029] Figure 6 This is a front view of a medical handheld grinding wheel according to Embodiment 3 of the present invention;

[0030] Figure 7 This is a front view of a medical handheld grinding wheel according to Embodiment 4 of the present invention;

[0031] Figure 8 for Figure 7 The left view;

[0032] Figure 9 for Figure 8Enlarged schematic diagram of the central protective arc plate;

[0033] Figure 10 for Figure 9 A schematic diagram of the structure when the central protective arc plate is not shown. Detailed Implementation

[0034] The following detailed description illustrates the specific implementation method:

[0035] The markings in the accompanying drawings include: handle 1, extension 110, grinding wheel 2, mounting ring 3, connecting rod 4, external thread 5, threaded post 6, locking nut 7, through hole 8, wire hole 9, anti-slip strip 10, connecting rod 11, connecting ear plate 12, handle ear plate 13, protective arc plate 14, and horizontal through groove 141.

[0036] Example 1

[0037] This embodiment is basically as follows: Figure 1 , Figure 2 and Figure 3 As shown: A medical handheld grinding wheel includes a handle 1 and several grinding wheels 2. One end of the handle 1 is provided with a mounting ring 3. Specifically, a connecting rod 4 is fixedly connected to the mounting ring 3. The connecting rod 4 is detachably connected to the end of the handle 1 near the mounting ring 3. In this embodiment, the connecting rod 4 is threadedly connected to the end of the handle 1 near the mounting ring 3; that is, the outer peripheral wall of the connecting rod 4 is provided with an external thread 5. An axial hole is opened at the end of the handle 1 near the mounting ring 3, and the inner peripheral wall of the axial hole is provided with an internal thread adapted to the external thread 5. Furthermore, in this embodiment, the connecting rod 4 is welded to the mounting ring 3.

[0038] Two or more threaded posts 6 are fixedly connected to the mounting ring 3, and these two or more threaded posts 6 are evenly distributed along the circumference of the mounting ring 3. Each threaded post 6 is threadedly connected to a locking nut 7, and the center hole of the grinding wheel 2 can pass through the threaded post 6. The diameter of the locking nut 7 is larger than the diameter of the center hole of the grinding wheel 2. A washer (not shown) is fitted on each threaded post 6, and the washer is located between the grinding wheel 2 and the locking nut 7. In this embodiment, there are three threaded posts 6, and correspondingly, there are three grinding wheels 2; the bottom end of the threaded post 6 is welded to the mounting ring 3.

[0039] The handle 1 has an extension portion 110 with a through hole 8 for the neck of an ampoule to pass through. In this embodiment, the extension portion 110 is integrally formed on the handle 1. Additionally, the handle 1 has a threading hole 9, allowing the nurse to thread one end of a thin rope through the hole 9 to tie it to the handle 1, and then tie the other end of the rope to a certain part (e.g., the top of a table leg) to prevent loss. An anti-slip strip 10 is fixedly connected to the handle 1. In this embodiment, the anti-slip strip 10 is a rubber strip and is adhered to the handle 1.

[0040] In this embodiment, the grinding wheels 2 on the three threaded posts 6 are connected sequentially at points near the vertical central axis of the mounting ring 3 to form a cutting line (e.g., Figure 3 (As shown by the dotted line in the diagram). In use, the nurse holds the handle 1 with one hand and the ampoule with the other, inserting the neck of the ampoule into the mounting ring 3, ensuring the neck of the ampoule is against the edge of the grinding wheel 2, i.e., the cutting line is located on the outer periphery of the neck. Then, the nurse rotates the ampoule or rotates the mounting ring 3 via the handle 1, causing relative rotation between the neck and the grinding wheel 2. The grinding wheel 2 cuts the neck, quickly leaving a scratch. Next, the nurse removes the ampoule neck from the mounting ring 3 and inserts the neck through the through hole 8 on the handle 1, then bends the handle 1 or the ampoule, causing the neck to break along the scratch, thus opening the ampoule.

[0041] In the above process, the nurse's hand does not directly contact the grinding wheel 2, thus avoiding cuts to the nurse's hand. Furthermore, when breaking the ampoule neck, the nurse's hand does not touch the neck, thus avoiding hand injuries. This embodiment offers high safety. Moreover, since there are three grinding wheels 2, a complete circumferential scratch can be cut at the neck of the ampoule by rotating the ampoule or mounting ring 3 by 120°. Compared to using a single grinding wheel 2 to cut the ampoule neck, this embodiment can complete the cutting faster, thereby improving the opening efficiency of the ampoule. Additionally, the grinding wheels 2 in this embodiment are replaceable; for example, they can be replaced with a grinding wheel of a different specification (outer diameter).

[0042] Example 2

[0043] The difference between this embodiment and Embodiment 1 is that: Figure 4 and Figure 5 As shown, in this embodiment, there are two or more mounting rings 3; specifically, there are two mounting rings 3. The two mounting rings 3 are concentrically arranged and connected by a connecting rod 11. Specifically, one end of the connecting rod 11 is welded to the mounting ring 3 with the smaller radius, and the other end of the connecting rod 11 is welded to the mounting ring 3 with the larger radius. Furthermore, the threaded posts 6 on the mounting rings 3 are staggered. In this embodiment, for ease of description, the mounting ring 3 with the smaller radius is the first mounting ring 3, and the mounting ring 3 with the larger radius is the second mounting ring 3. The three threaded posts on the first mounting ring 3 have their top center points connected sequentially to form an inverted equilateral triangle, while the three threaded posts on the second mounting ring 3 have their top center points connected sequentially to form a regular equilateral triangle.

[0044] In this embodiment, the threaded posts 6 on the two mounting rings 3 are staggered. Therefore, when the grinding wheel 2 is mounted on the threaded post 6 of one mounting ring 3, it will not be affected by the threaded post 6 of the other mounting ring 3. Thus, in this embodiment, it is possible to cut bottlenecks with two significantly different outer diameters without changing the outer diameter of the grinding wheel 2, providing better adaptability. Specifically, for bottlenecks with a larger outer diameter, the grinding wheel 2 is mounted on the mounting ring 3 with a larger radius; for bottlenecks with a smaller outer diameter, the grinding wheel 2 is mounted on the mounting ring 3 with a smaller radius.

[0045] Example 3

[0046] The difference between this embodiment and Embodiment 1 is that: Figure 6 As shown, the detachable connection method between the connecting rod 4 and the handle 1 in this embodiment is different from that in the first embodiment. In this embodiment, the connecting rod 4 is integrally formed with a connecting ear plate 12, and the handle 1 is integrally formed with a handle ear plate 13 at the end near the mounting ring 3. Mounting holes are provided on both the connecting ear plate 12 and the handle ear plate 13.

[0047] In this embodiment, bolts are used to pass through the mounting holes on the connecting ear plate 12 and the handle ear plate 13, and are engaged with nuts to connect the connecting ear plate 12 and the handle ear plate 13 together, thereby connecting the connecting rod 4 and the handle 1 together, realizing the connection between the mounting ring 3 and the handle 1, and also enabling the separation of the mounting ring 3 and the handle 1.

[0048] Example 4

[0049] The difference between this embodiment and Embodiment 1 is that: Figure 7 and Figure 8 As shown, a plurality of protective arc plates 14 are welded onto the mounting ring 3. The number of protective arc plates 14 is the same as the number of threaded posts 6, that is, in this embodiment, the number of protective arc plates 14 is three. The protective arc plates 14 are located on the outer periphery of the threaded posts 6 and are concentric with the threaded posts 6, and a space is left between the protective arc plates 14 and the threaded posts 6 for the installation of the grinding wheel 2. A plurality of horizontal through grooves 141 are formed on the protective arc plates, and the plurality of horizontal through grooves 141 are arranged along the axial direction of the protective arc plates 14.

[0050] In this embodiment, the outer periphery of the grinding wheel 2 is protected by the protective arc plate 14. This can prevent the grinding wheel 2 from colliding with objects such as the table and causing damage to the grinding wheel 2 or the objects. It can also prevent the grinding wheel 2 from scratching the nurse, thereby improving the safety of using the grinding wheel 2.

[0051] In addition, several grinding wheels 2 can be installed on the same threaded post 6. In this embodiment, combined with Figure 9 and Figure 10As shown, three grinding wheels 2 are installed on the same threaded post 6, and the outer diameter of the three grinding wheels 2 gradually decreases from top to bottom. Thus, the three cutting lines formed by the sequential connection of the three grinding wheels 2 on the three threaded posts 6 near the vertical central axis of the mounting ring 3 have a diameter that gradually increases from top to bottom, which can cut ampoules with larger necks. Specifically, remove the locking nut 7, then insert the sheet plate (thin plastic or steel plate) into the corresponding horizontal slot 141 on the protective arc plate 14 until the sheet plate is inserted between two adjacent grinding wheels 2 on the same threaded post 6. After the sheet plate is inserted into the corresponding horizontal slot 141 on all three protective arc plates 14, flip the handle 1 (flip the handle 1 180°) so that the grinding wheel 2 with a larger outer diameter falls off under the action of gravity, while the grinding wheel 2 restricted by the sheet plate remains on the threaded post 6. Then, flip the handle 1 (flip the handle 1 180°) to reset it, pull out the sheet plate, and then re-thread the locking nut 7 onto the threaded post 6 to fix the remaining grinding wheel 2. In this way, the neck of a large ampoule can be cut without replacing the grinding wheel 2 on the threaded post 6 one by one, and without the nurse manually removing the grinding wheel from the threaded post 6. The operation is safer and faster.

[0052] The above are merely embodiments of the present invention. The invention is not limited to the fields covered by these embodiments. Commonly known structures and characteristics are not described in detail here. Those skilled in the art are aware of all common technical knowledge in the field prior to the application date or priority date, are aware of all existing technologies in that field, and have the ability to apply conventional experimental methods prior to that date. Those skilled in the art can improve and implement this solution based on the guidance provided in this application and their own capabilities. Some typical known structures or methods should not be obstacles for those skilled in the art to implement this application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the structure of the present invention. These should also be considered within the scope of protection of the present invention, and will not affect the effectiveness or practicality of the invention. The scope of protection claimed in this application should be determined by the content of its claims. The specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A medical handheld grinding wheel, comprising a handle and a plurality of grinding wheels, characterized in that: One end of the handle is provided with a mounting ring, on which threaded posts are fixedly connected. There are two or more threaded posts, each threaded post is threadedly connected with a locking nut. The center hole of the grinding wheel can pass through the threaded post, and the diameter of the locking nut is larger than the diameter of the center hole of the grinding wheel. Several protective arc plates are fixedly connected to the mounting ring. The protective arc plates correspond one-to-one with the threaded posts and are concentric with the corresponding threaded posts. Several horizontal through slots are opened on the protective arc plates. When grinding wheels with different outer diameters are installed on the same threaded post, and the outer diameter of the grinding wheels gradually decreases from top to bottom, when the outer diameter of the neck of the ampoule to be opened is large, the plate is inserted into the horizontal through slot on the protective arc plate until the plate is inserted between two adjacent grinding wheels. Then the handle is flipped so that the threaded post is facing down, and the grinding wheel away from the mounting ring falls off, while the grinding wheel limited by the plate will not detach from the threaded post.

2. The medical handheld grinding wheel according to claim 1, characterized in that: The handle is provided with an extension part, and the extension part has a through hole for the neck of the ampoule to pass through.

3. The medical handheld grinding wheel according to claim 1, characterized in that: The mounting ring is fixedly connected to a connecting rod, and the connecting rod is detachably connected to the end of the handle near the mounting ring.

4. The medical handheld grinding wheel according to claim 3, characterized in that: The connecting rod is threaded to the end of the handle near the mounting ring.

5. The medical handheld grinding wheel according to claim 3, characterized in that: The connecting rod has a connecting ear plate at the end away from the mounting ring, and the handle has a handle ear plate at the end near the mounting ring. Both the connecting ear plate and the handle ear plate have mounting holes.

6. The medical handheld grinding wheel according to claim 1, characterized in that: A washer is fitted onto the threaded post, and the washer is located between the grinding wheel and the lock nut.

7. The medical handheld grinding wheel according to claim 1, characterized in that: The two or more threaded posts on the mounting ring are evenly distributed along the circumference of the mounting ring.

8. The medical handheld grinding wheel according to claim 1, characterized in that: The handle has a threading hole at the end away from the mounting ring.

Images