Medical multifunctional pen
By integrating a rotating grinding wheel and a debris collection tube into a medical multi-functional pen, the problem of debris splashing during ampoule opening is solved, achieving a safe and efficient ampoule opening process and reducing the risk of debris contamination and maintenance costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FIRST HOSPITAL AFFILIATED TO GENERAL HOSPITAL OF PLA
- Filing Date
- 2025-06-25
- Publication Date
- 2026-05-12
AI Technical Summary
Traditional ampoule opening tools pose a risk of glass shards splashing and causing contamination, and lack shard collection capabilities, affecting work efficiency and patient safety.
A multifunctional medical pen was designed, comprising a rotatable grinding wheel and a detachable debris collection tube. The outer end of the grinding wheel is designed to ensure that the ampoule contacts the side wall of the cap after insertion. The inner wall of the debris collection tube is coated with an adhesive layer to achieve the adsorption and collection of glass debris.
It effectively prevents glass shards from flying, reduces the risk of contamination, improves operational efficiency, reduces maintenance costs, and ensures patient safety.
Smart Images
Figure CN224226637U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical device technology, and in particular to a medical multifunctional pen. Background Technology
[0002] In medical care procedures, opening ampoules is a frequent and critical step. Traditional ampoule opening methods typically rely on individual grinding wheels or cutters; when using these, healthcare workers must hold the grinding wheel with one hand and vigorously rub the ampoule neck, making it difficult to control the cutting force and easily causing glass shards to fly, posing a risk of cuts. Traditional grinding wheels or cutters only have a single function, while healthcare workers need to use pens for recording and lighting (especially at night or in low-light conditions) simultaneously when preparing medications, frequently switching tools reduces work efficiency. Existing cutting tools lack shard collection capabilities, and flying glass shards may contaminate the medication preparation environment or even fall into the medication solution, threatening patient safety.
[0003] Patent publication number CN210652431U discloses an integrated medical pen, including a pen body and a grinding wheel located at the tail end of the pen body. Patent publication number CN202508856U discloses a convenient medical ampoule cutting pen, which consists of a pen cap, an upper tube, a lower tube, a circular slip ring, multiple blades, and a triangular grinding wheel. Both of these technical solutions disclose using a grinding wheel on the pen to achieve a cutting function, but they lack a debris collection structure, thus failing to effectively prevent debris from splashing. Utility Model Content
[0004] This invention provides a medical multi-functional pen that is easy to use and can effectively prevent debris from flying.
[0005] To achieve the above objectives, the technical solution of this utility model is as follows:
[0006] A multifunctional medical pen includes a pen body. The pen body has an ampoule cutting module at its rear end. The ampoule cutting module includes two axle mounting components fixed to the rear end of the pen body and extending outwards in parallel. Each axle mounting component has a pivot hole, through which a pivot is inserted. The pivot is fixedly connected to a grinding wheel and can rotate around the axis of the pivot hole. The grinding wheel is positioned between the two axle mounting components. A detachable debris collection tube is inserted around the periphery of the rear end of the pen body. The debris collection tube completely encloses the grinding wheel and the axle mounting components within its tube. Bottle cap insertion holes are provided on both sides of the debris collection tube corresponding to the outer ends of the grinding wheel. On a projection plane perpendicular to the axis of the debris collection tube, the outer end of the grinding wheel is located outside the inner edge of the bottle cap insertion hole. The diameter of the bottle cap insertion hole is not less than the diameter of the ampoule cap. An adhesive layer is provided on the inner wall of the debris collection tube.
[0007] Preferably, the debris collection pipe has first fixing holes of different diameters arranged along the same axis on the outer side of the pipe body.
[0008] Preferably, a second fixing hole corresponding to the first fixing hole is provided on the other side of the tube body at a position symmetrical to the first fixing hole along the radial direction.
[0009] Preferably, the diameter of the second fixing hole at the same radially symmetrical position is smaller than the diameter of the first fixing hole.
[0010] Preferably, the wall of the debris collection tube around the bottle cap insertion hole extends inward with an arc-shaped surface, and the arc-shaped surface does not contact the grinding wheel.
[0011] Preferably, the pen body has an annular sleeve around its rear end, and the outer wall of the annular sleeve has an outer limiting protrusion with a height of 0.5-1mm; the inner wall of the insertion end of the debris collection tube has an inner limiting protrusion with a diameter not greater than that of the outer limiting protrusion.
[0012] Preferably, the height of the annular sleeve is 12mm, the distance from the outer limiting protrusion to the edge of the annular sleeve is 2mm, and the distance from the insertion end of the debris collection tube to the inner limiting protrusion is 11-12mm.
[0013] Preferably, a press-type lighting module is provided on one side of the front end of the pen body, including LED beads, button battery and transparent lampshade, and the surface of the lampshade is provided with anti-slip texture.
[0014] The above-mentioned technical solution of this utility model has the following beneficial effects:
[0015] This novel medical multi-functional pen features a grinding wheel positioned on the outer side of the ampoule's insertion hole, ensuring effective contact between the ampoule cap's sidewall and the grinding wheel after insertion. This avoids the repeated friction issues caused by grinding wheel misalignment in traditional tools. The debris collection tube completely encloses the grinding wheel and its axle mounting components, and, in conjunction with the inner adhesive layer, achieves real-time adsorption and collection of glass debris, preventing debris escape and significantly reducing the risk of contamination. The debris collection tube is secured to the annular sleeve by inner and outer limiting protrusions. This plug-in, detachable design of the grinding wheel module and debris collection tube allows for individual replacement of damaged parts, reducing maintenance costs. Attached Figure Description
[0016] Figure 1 This is a structural breakdown diagram of the medical multifunctional pen of this utility model;
[0017] Figure 2 This is a partial structural cross-sectional view of the medical multifunctional pen of this utility model;
[0018] Figure 3 This is a schematic diagram of the overall structure of the medical multifunctional pen of this utility model. Detailed Implementation
[0019] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings and examples.
[0020] Please see Figure 1-3 As shown, the medical multifunctional pen disclosed in this utility model includes a pen body 100, and an ampoule cutting module 200 is provided at the rear end of the pen body 100.
[0021] The ampoule cutting module 200 includes two parallel, outwardly extending axle mounting members 210, for reference. Figure 2 It is bolted to the rear end of the pen body 100. The two wheel axle mounting parts 210 are 8mm apart and have a central pivot hole. The pivot 220 is inserted into the pivot hole, and a grinding wheel 230 is fixedly connected to the middle of the pivot 220. The grinding wheel 230 has an outer diameter of 15mm and is made of silicon carbide. The grinding wheel 230 can rotate freely around the axis of the pivot 220.
[0022] like Figure 1 As shown, a detachable debris collection tube 300 (transparent PC material, 1.5mm wall thickness) is inserted into the rear end of the pen body 100. The tube completely covers the grinding wheel 230 and the wheel axle mounting component 210. Bottle cap insertion holes 310 are provided on both sides of the debris collection tube 300 corresponding to the outer ends of the grinding wheel 230. On the orthographic projection plane perpendicular to the axis of the debris collection tube 300, the outer end of the grinding wheel 230 extends beyond the inner edge of the bottle cap insertion hole 310. (Refer to...) Figure 3 The size should not exceed the limit by less than 2mm, ensuring that the side wall of the ampoule cap contacts the grinding wheel 230 for cutting after insertion. The inner wall of the debris collection tube 300 is coated with a medical pressure-sensitive adhesive layer 320 (0.1mm thick) to absorb glass debris generated during cutting.
[0023] The outer tube of the debris collection tube 300 has three first fixing holes 410 arranged along the same axis, with diameters of 6mm, 8mm, and 10mm respectively, made of ABS plastic; these are used to insert ampoules of different sizes. On the other side of the tube, symmetrically positioned along the radial direction of the first fixing holes 410, there is a second fixing hole 420. The diameter of the second fixing hole 420 is smaller than that of the coaxial first fixing hole 410, for example, the diameters of the second fixing holes 420 are 4mm, 6mm, and 8mm respectively, used to clamp the neck of the ampoule and prevent slippage during cutting.
[0024] The wall of the debris collection tube around the cap insertion hole 310 extends inward with an arc-shaped surface 510. The arc-shaped surface 510 is spaced at least 1 mm from the grinding wheel 230. This is used to guide the ampoule bottle to be inserted vertically and limit its deviation, so as to avoid frictional wear between the grinding wheel 230 and the tube wall.
[0025] The pen body 100 has an annular sleeve 600 (12mm high) around its rear end, and its outer wall surface has an outer limiting protrusion 610 (0.8mm high, 1mm wide). The inner wall of the insertion end of the debris collection tube 300 has an inner limiting protrusion 620 (12.2mm inner diameter, corresponding to an outer limiting protrusion 610 outer diameter of 12.3mm). When inserted, the inner limiting protrusion 620 engages below the outer limiting protrusion 610, and the distance from the insertion end to the inner limiting protrusion 620 is 11.5mm to ensure a stable insertion.
[0026] The pen body 100 has a pen tip at its front end, and the pen body 100 corresponding to the rear end of the pen refill adopts a press-type structure, such as... Figure 1 As shown, the ampoule cutting module 200 is located at the rear end of the press-type structure; in addition to the pen tip 800, the front end of the pen body 100 also has a press-type lighting module 700 on one side, including an LED lamp bead 710, a button battery 720 and a transparent lampshade 730 (the surface is provided with a dot matrix anti-slip texture with a texture depth of 0.3mm), which is used for medicine dispensing lighting in dim environments; the side wall of the pen is provided with a battery cavity to accommodate the button battery 720, and a press switch 740 is also provided next to the lamp bead 710.
[0027] When this utility model device is used for ampoule cutting:
[0028] Insert the ampoule cap vertically into the cap insertion hole 310 of the debris collection tube 300 until the side wall of the cap contacts the grinding wheel 230;
[0029] Hold the pen body 100 with one hand and gently push the ampoule with the other hand to make the grinding wheel 230 rotate with the shaft 220, making a circular cut around the cap for about 2-3 seconds;
[0030] The bottle cap can be easily opened by gently bending it, and the glass shards produced during cutting are automatically adsorbed onto the adhesive layer 320 on the inner wall of the shard collection tube 300.
[0031] Multi-size ampoule bottle compatible with breakage:
[0032] For small-sized bottles: Insert the neck of the ampoule into the second fixing hole 420, and insert the bottle body into the first fixing hole 410 on the coaxial line for auxiliary fixation.
[0033] Large bottle body fixing: Directly insert into the first fixing hole 410, and use the difference in hole diameter to achieve a stable clamping.
[0034] Debris collection pipe maintenance:
[0035] Pinch both sides of the debris collection tube 300 and pull it outwards. Invert the tube and tap it gently to collect and remove the adhering debris. If the adhesive layer 320 fails, discard the tube and replace it with the debris collection tube 300.
[0036] The above-described embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made by those skilled in the art to the technical solutions of the present utility model without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.
Claims
1. A medical multifunctional pen, comprising a pen body, characterized in that, The pen body has an ampoule cutting module at its rear end. The ampoule cutting module includes two wheel axle mounting parts that are fixed to the rear end of the pen body and extend outward in parallel. The two wheel axle mounting parts have a pivot hole, and a pivot is inserted into the pivot hole. The pivot is fixedly connected to a grinding wheel and can rotate around the axis of the pivot hole. The grinding wheel is placed between the two wheel axle mounting parts. A detachable debris collection tube is inserted into the periphery of the rear end of the pen body. The debris collection tube completely covers the grinding wheel and the wheel axle mounting parts in its tube body. Bottle cap insertion holes are provided on both sides of the debris collection tube corresponding to the outer ends of the grinding wheel. On the orthographic projection plane perpendicular to the axis of the debris collection tube, the outer end of the grinding wheel is located outside the inner edge of the bottle cap insertion hole. The diameter of the bottle cap insertion hole is not less than the diameter of the ampoule cap. An adhesive layer is provided on the inner wall of the debris collection tube.
2. The medical multifunctional pen as described in claim 1, characterized in that, The debris collection pipe has first fixing holes of different diameters arranged along the same axis on the outer side of the pipe body.
3. The medical multifunctional pen as described in claim 2, characterized in that, A second fixing hole, corresponding to the first fixing hole, is provided on the other side of the tube body at a position symmetrical to the first fixing hole along the radial direction.
4. The medical multifunctional pen as described in claim 3, characterized in that, The diameter of the second fixing hole at the same radially symmetrical position is smaller than the diameter of the first fixing hole.
5. The medical multifunctional pen as described in claim 1, characterized in that, The wall of the debris collection tube around the bottle cap insertion hole extends inward with an arc-shaped surface, which does not contact the grinding wheel.
6. The medical multifunctional pen as described in claim 1, characterized in that, The pen body has an annular sleeve around its rear end, and the outer wall of the annular sleeve has an outer limiting protrusion with a height of 0.5-1mm; the inner wall of the insertion end of the debris collection tube has an inner limiting protrusion with a diameter not greater than that of the outer limiting protrusion.
7. The medical multifunctional pen as described in claim 6, characterized in that, The height of the annular sleeve is 12mm, and the distance from the outer limiting protrusion to the edge of the annular sleeve is 2mm; the distance from the insertion end of the debris collection tube to the inner limiting protrusion is 11-12mm.
8. The medical multifunctional pen as described in claim 1, characterized in that, The pen body has a press-type lighting module on one side of the front end, which includes LED beads, button battery and transparent lampshade. The surface of the lampshade is provided with anti-slip texture.