Medical pen and cleaning tool therefor

A medical pen with a long nib and a cleaning tool effectively addresses the issue of pen contamination by enabling easy cleaning and reuse, enhancing surgical efficiency and reducing waste.

JP2026007641APending Publication Date: 2026-01-16MORI TRUST HLDG INC
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Patent Information

Application Number
JP2024107652
Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
Filing Date
2024-07-03
Publication Date
2026-01-16

AI Technical Summary

Technical Problem

Existing medical pens used for marking organs during surgery become unusable due to contamination with blood and body fluids, necessitating multiple replacements and increasing waste, as suitable pens are not available and current solutions are uneconomical.

Method used

A medical pen with a long nib and a cleaning tool featuring grooves and a dust- and water-absorbing sheet for easy and quick cleaning of the pen tip, allowing reuse.

Benefits of technology

The pen's design reduces the need for frequent replacements, minimizes waste, and ensures clear markings on organs during surgery by maintaining pen functionality.

✦ Generated by Eureka AI based on patent content.

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    Figure 2026007641000001_ABST
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Abstract

To provide a medical pen suitable for directly writing on an internal organ in an internal organ operation, and a pen point cleaner of the medical pen which can be reused by simply and quickly removing the stain of the pen point which is used once and stained.SOLUTION: In the cleaning tool for simply and rapidly removing the stain of the pen point 12 of a medical pen 11 stained with blood, body fluid or the like during an operation on the spot, one or a plurality of grooves 3 of a width corresponding to the thickness of the pen point 12 are formed on the upper surface of a casing 1 so as to extend in a longitudinal direction and a dust sucking and water absorbing sheet 4 is mounted thereon.SELECTED DRAWING: Figure 1
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Description

[Technical Field]

[0001] The present invention relates to a medical pen and a cleaning tool for the same, and more particularly to a medical pen used to mark a surgical site during surgery, especially during organ surgery, and a cleaning tool for the pen tip of the same. [Background technology]

[0002] During surgery, in order to clearly indicate the position where the scalpel will be inserted, markings are often made on the skin using a special pen called a skin marker or surgical pen (Patent Publication No. 7393821). In organ surgery, there is also a need to mark the organ directly after the skin is incised, but as pens for organ use are not available on the market, each doctor must find their own way to use them.

[0003] When marking organs, there is a lot of blood and body fluids on the surface of the organ, so when writing on them, the pen tip absorbs the blood and body fluids and becomes dirty, making it difficult to write immediately. As a result, the pen must be replaced each time, and several pens must be prepared and replaced for one surgery, which is not only uneconomical but also goes against the need to reduce the volume of waste. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 7393821 Summary of the Invention [Problem to be solved by the invention]

[0005] As mentioned above, in recent organ surgeries, there is a demand for marking the organ itself to clearly indicate the surgical site, but since suitable organ pens are not available, each surgeon must find one on their own.Furthermore, the pen tip becomes dirty every time it is used and becomes unusable, so multiple pens must be prepared for each surgery, which is uneconomical.Therefore, the objective of this invention is to provide a medical pen suitable for writing directly on organs during organ surgery, and a medical pen tip cleaner that can easily and quickly clean the pen tip after use, making it reusable. [Means for solving the problem]

[0006] The invention described in claim 1 to solve the above problem is a cleaning tool for easily and quickly removing stains on the nib of a medical pen that has become soiled with blood, body fluids, etc. during surgery, This is a medical pen tip cleaner characterized by having one or more grooves on the top surface of the housing, the width of which corresponds to the thickness of the pen tip, extending in the longitudinal direction, and a dust- and water-absorbing sheet placed on top of them.

[0007] The invention described in claim 2 to solve the above problem is a cleaning tool for easily and quickly removing stains on the nib of a medical pen that has become soiled with blood, body fluids, etc. during surgery, It consists of a housing and a cover that covers it, The nib cleaner for medical pens is characterized in that the top surface of the housing has one or more grooves extending lengthwise, the width of which corresponds to the thickness of the nib, and a dust-absorbing and water-absorbing sheet is placed on top of the grooves, and the top surface of the cover has slits corresponding to the grooves. In one embodiment, the edge of the dust-absorbing and water-absorbing sheet is sandwiched between the upper outer surface of the housing and the inner surface of the cover.

[0008] The invention described in claim 4 to solve the above problem is a cleaning tool for easily and quickly removing stains on the nib of a medical pen that has become soiled with blood, body fluids, etc. during surgery, A medical pen nib cleaner comprises a housing and a lid that is placed over the housing at a distance, the top surface of the housing is covered with a dust-absorbing and water-absorbent sheet, and the top surface of the lid has one or more slits extending longitudinally, the slits having a width corresponding to the thickness of the pen nib. In one embodiment, the edge of the dust-absorbing and water-absorbent sheet is sandwiched between the upper outer surface of the housing and the inner surface of the lid.

[0009] In one embodiment, the dust- and water-absorbing sheet is a medical nonwoven fabric.

[0010] In one embodiment, the housing has a bottom surface provided with an anti-slip means, which is a rubber sheet or a magnetic sheet.

[0011] The invention described in claim 9 for solving the above problem is a medical pen characterized in that the pen tip has a diameter of 0.3 to 5 mm and protrudes from the pen tip holder by 5 mm or more. [Effects of the Invention]

[0012] The present invention is as described above. The medical pen of the present invention has a long nib and is less likely to have blind spots when writing, making it suitable for doctors to write directly on organs during surgery. Furthermore, the nib cleaner allows a doctor performing surgery to easily and quickly clean the nib of a medical pen that has become soiled with blood, body fluids, moisture, etc. with one hand to the point where the nib can be reused. This eliminates the hassle and waste of having to change pens multiple times, has the effect of allowing the surgery to proceed more smoothly, and can also contribute to reducing the volume of waste. [Brief explanation of the drawings]

[0013] [Figure 1] 1 is a perspective view of a first embodiment of a medical pen tip cleaner according to the present invention; [Figure 2] FIG. 2 is a perspective view of a second embodiment of a medical pen tip cleaner according to the present invention. [Figure 3] 1 is a cross-sectional perspective view of first to third embodiments of a pen tip cleaner for a medical pen according to the present invention. [Figure 4] 1 is a perspective view showing the configuration of a medical pen according to the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0014] The present invention will be described in detail with reference to the accompanying drawings. The medical pen tip cleaner of the present invention is a pen tip cleaner that allows a doctor (surgeon) to easily and quickly remove stains from the tip of a medical pen that have become contaminated with blood, body fluids, etc. during surgery.

[0015] First, a first embodiment shown in Figures 1 and 3(A) will be described. The pen tip cleaner 10 of this first embodiment has one or more grooves 3 (three in the illustrated example) extending longitudinally on the top surface of a housing 1, the grooves having a width corresponding to the thickness of the pen tip 12 of a medical pen 11 used by a doctor, and is covered with a dust- and water-absorbing sheet 2 with appropriate friction. The housing 1 is typically in the shape of a vertically long box and is made of resin, metal, or cardboard.

[0016] Since the dust- and water-absorbing sheet is for medical use, it is preferable to use a medical nonwoven fabric. The dust- and water-absorbing sheet 2 is preferably shaped to have a recess corresponding to the groove 3, and as necessary, is partially or entirely adhered to the housing 1. The depth of the groove 3 corresponds to the length of the nib 12 of the medical pen 11, i.e., the length that protrudes from the pen core holder 13, and is, for example, about half the length of the nib 12.

[0017] The pen tip cleaner 10 according to the present invention is used by a doctor during organ surgery. Specifically, after incising the skin, the doctor uses the medical pen 11 to directly mark the organ. However, because there is a large amount of blood and bodily fluids on the surface of the organ, the pen tip 12 becomes contaminated with blood and bodily fluids after one use, making it difficult to write. Therefore, in the first embodiment, after use, the doctor inserts the pen tip 12 into the groove 3 of the pen tip cleaner 10 and slides it along the groove 3. The pen tip 12 is then absorbed by the dust-absorbing and water-absorbing sheet 2 and rubbed, removing any dirt, making it reusable. Typically, marking is performed only about three times during a single surgery, so three grooves 3 on the housing 1 are sufficient.

[0018] It is assumed that a doctor will use the medical pen 11 during surgery, holding an organ with his left hand and writing with the medical pen 11 in his right hand. In this case, the doctor's left hand is occupied, making it impossible to hold down the pen tip cleaner with his left hand when sliding the pen tip 12. Therefore, it is preferable to provide an anti-slip means 7 on the bottom surface of the housing 1. The anti-slip means 7 is, for example, a rubber sheet or a magnetic sheet. This anti-slip means 7 prevents the housing 1 from slipping when cleaning with one hand, making it easier to clean the pen tip with one hand.

[0019] Next, a second embodiment will be described with reference to Figures 2 and 3(B). The pen tip cleaner 10 according to the second embodiment comprises a housing 1 and a cover 5 for covering the housing 1, and the housing 1 has the same configuration as that of the first embodiment. The dust and water absorbing sheet 2 in this case is also shaped in the same way as in the first embodiment, but does not need to be adhered.

[0020] The lid 5 has a slit 6 formed therein that corresponds to the groove 3 of the housing 1. The slit 6 is positioned so that it will be above the groove 3 when the lid 5 is placed over the housing 1, and is formed to be approximately the same length as the groove 3. The lid 5 is tightly fitted to the housing 1, so that the peripheral edge of the dust and water absorbent sheet 2 is sandwiched between the upper part of the outer surface of the housing 1 and the inner surface of the lid 5, increasing the fixing strength. As in the first embodiment, it is preferable to provide an anti-slip means 7 on the bottom surface of the housing 1.

[0021] The pen tip cleaner 10 of this second embodiment is used in the same manner as the first pen tip cleaner 10, except that the pen tip 12 is inserted into the groove 3 through the slit 6 in the cover 5. However, in the case of the second embodiment, dirt on the pen tip 12 is scraped off not only by the groove 3 but also by the side of the slit 6.

[0022] Next, a third embodiment will be described with reference to Figures 2 and 3(C). The pen tip cleaner 10 according to the third embodiment comprises a housing 1 and a lid 5 that is placed over the housing 1 at a distance. The top surface of the housing 1 is flat, and a dust- and water-absorbent sheet 2, a medical nonwoven fabric, is placed on top of the housing 1 in a taut state. If the dust- and water-absorbent sheet 2 is not kept taut, as will be described later, the sheet 2 will shift when the doctor performs a cleaning operation, making it difficult to perform the cleaning operation. The taut state of the dust- and water-absorbent sheet 2 is maintained by tightly fitting the lid 5 into the housing 1, and the peripheral edge of the dust- and water-absorbent sheet 2 is sandwiched between the upper outer surface of the housing 1 and the inner surface of the lid 5.

[0023] In this case, the cover 5 is configured to have one or more slits 6 formed therein, as in the second embodiment. As in the above embodiments, it is preferable to provide anti-slip means 7 on the bottom surface of the housing 1. In the pen tip cleaner 10 of this third embodiment, the pen tip 12 is placed against the dust- and water-absorbing sheet 2 and slid along the slit 6, whereby dirt on the pen tip 12 is scraped off by the dust- and water-absorbing sheet 2 and the side surfaces of the slit 6.

[0024] While the nib length of a typical surgical pen, i.e., the length of its projection from the nib holder, is approximately 3 to 5 mm, the nib 12 of the medical pen 11 of the present invention has a diameter of 0.3 to 5 mm and a length of 5 mm or more. When marking an organ during surgery, the marking area is easily obscured by the organ's surroundings or surgical equipment, creating a blind spot. The nib of a typical surgical pen is short, making it difficult to visually observe the tip while writing. Therefore, by making the nib 12 longer than typical pens as described above, blind spots are less likely to occur during writing, making the medical pen suitable for doctors to use to directly mark organs during surgery. The reason why typical nibs are kept short is that longer nibs tend to tilt under pressure, making writing difficult and more susceptible to damage.

[0025] Pigment ink is used as the ink for the medical pen 11 according to the present invention. This is because, particularly when the medical pen 11 is used on an organ, there is a high possibility that the pen tip 12 will absorb blood or moisture during writing, and by using pigment ink, even if blood or moisture is absorbed, the pigment does not dissolve in water and remains as particles, making it possible to continue writing.

[0026] The medical pen 11 and dust- and water-absorbing sheet 2 of the present invention are, in principle, intended for single-use (disposable) use, but the housing 1 and lid 2 can be reused by sterilizing and cleaning them after one use, thereby meeting the demand for reducing the volume of waste. [Industrial Applicability]

[0027] As described above, the medical pen of the present invention has a long nib that is less likely to leave blind spots when writing, making it suitable for doctors to write directly on organs during surgery. Furthermore, the nib cleaner allows a doctor performing surgery to easily and quickly clean the nib of a medical pen that has become soiled with blood, body fluids, moisture, etc. with one hand to the point where the nib can be reused. This eliminates the need to replace the pen multiple times, contributes to reducing waste, and has the effect of allowing surgery to proceed more smoothly, making it highly applicable in industry. [Explanation of symbols]

[0028] 1 chassis 2. Dust and water absorption sheet 3 grooves 5 Lid 6 aperture 7 Anti-slip material 10 Pen tip cleaner 11 Medical pen 12 Pen Tips 13 Pen tip holder

Claims

1. A cleaning tool for easily and quickly removing stains on the nib of a medical pen that has become soiled with blood, body fluids, etc. during surgery. This medical pen tip cleaner is characterized in that one or more grooves having a width corresponding to the thickness of the pen tip are formed on the top surface of the housing so as to extend in the length direction, and a dust and water absorbing sheet is placed on top of them.

2. A cleaning tool for easily and quickly removing stains on the nib of a medical pen that has become soiled with blood, body fluids, etc. during surgery. It consists of a housing and a cover that covers it, A medical pen tip cleaner characterized in that one or more grooves of a width corresponding to the thickness of the pen tip are formed on the top surface of the housing and extend in the lengthwise direction, and a dust- and water-absorbing sheet is placed on top of them, and a slit corresponding to the grooves is formed on the top surface of the lid.

3. 3. The medical pen tip cleaner according to claim 2, wherein an edge of the dust and water absorbing sheet is sandwiched between an upper portion of the outer surface of the housing and an inner surface of the lid.

4. A cleaning tool for easily and quickly removing stains on the nib of a medical pen that has become soiled with blood, body fluids, etc. during surgery. It consists of a housing and a lid that is placed over it at an interval, A medical pen tip cleaner characterized in that the upper surface of the housing is covered with a dust and water absorbing sheet, and the upper surface of the lid has one or more slits of a width corresponding to the thickness of the pen tip formed extending in the length direction.

5. 5. The medical pen tip cleaner according to claim 4, wherein an edge of the dust and water absorbing sheet is sandwiched between an upper portion of the outer surface of the housing and an inner surface of the lid.

6. 6. The medical pen tip cleaner according to claim 1, wherein the dust-absorbing and water-absorbing sheet is a medical nonwoven fabric.

7. 6. The medical pen tip cleaner according to claim 1, wherein an anti-slip means is provided on the bottom surface of the housing.

8. 8. The medical pen tip cleaner according to claim 7, wherein the anti-slip means is a rubber sheet or a magnetic sheet.

9. A medical pen characterized in that a pen tip having a diameter of 0.3 to 5 mm protrudes from a pen tip holder by 5 mm or more.

Citation Information

Patent Citations

  • Medical marker ink and medical marker pen using the same

    JP7393821B2