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CN-121971182-A - Gentian violet liquid pen for surgical skin marking

CN121971182ACN 121971182 ACN121971182 ACN 121971182ACN-121971182-A

Abstract

The invention discloses a gentian violet liquid pen for marking surgical skin, which comprises a pen holder, a liquid storage tube, a nib assembly, a flow control module and a sealing cover, wherein a liquid storage cavity is formed in the pen holder, the liquid storage tube is arranged in the liquid storage cavity and is used for containing gentian violet marking liquid, the nib assembly is detachably connected to the front end of the pen holder, the flow control module is arranged between the liquid storage tube and the nib assembly and is used for guiding the gentian violet marking liquid to the replaceable nib assembly at a controlled speed, and the sealing cover is used for sealing the rear end of the pen holder. The invention systematically solves the core clinical problem in the operation skin marking by the innovative design of integrating the formula of the gentian violet marking liquid, the flow control module of the active capillary flow control, the special nib module of the multi-specification operation and the cover body with the dynamic liquid level sealing function, and provides a durable, accurate and reliable special tool for the operation skin marking.

Inventors

  • XU HUITING
  • WANG TAO
  • LIU JIANJUN
  • ZHOU YAN
  • LI XU
  • JU HAILING

Assignees

  • 复旦大学附属中山医院青浦分院(上海市青浦区中心医院)

Dates

Publication Date
20260505
Application Date
20260115

Claims (10)

  1. 1. A gentian violet fluid pen for surgical skin marking, comprising: the pen comprises a pen holder (1), wherein a liquid storage cavity is formed in the pen holder (1); the liquid storage pipe (2) is arranged in the liquid storage cavity and is used for containing gentian violet marking liquid; the pen point assembly (3) is detachably connected to the front end of the pen holder (1); A flow control module (4) disposed between the reservoir (2) and the nib assembly (3) for directing the gentian violet marking fluid at a controlled rate to the replaceable nib assembly (3), and And the sealing cover (5) is used for sealing the rear end of the pen holder (1).
  2. 2. The gentian violet fluid pen for surgical skin marking according to claim 1, wherein the gentian violet marking fluid comprises 1.3% to 1.7% gentian violet by weight and 1% to 2% polyvinylpyrrolidone by weight.
  3. 3. Gentian violet fluid pen for surgical skin marking according to claim 1, characterized in that the flow control module (4) comprises: a porous ceramic core (41) fixed at the front end of the pen holder (1) and in fluid communication with the outlet of the liquid storage tube (2); A capillary channel (42) provided between the porous ceramic core (41) and the nib assembly (3), and And a flow limiting ring (43) arranged between the liquid storage pipe (2) and the porous ceramic core (41) and used for finely adjusting the liquid flow by changing the contact pressure with the porous ceramic core (41).
  4. 4. Gentian violet liquid pen for surgical skin marking according to claim 3, characterized in that the porous ceramic core (41) is made of hydrophilic alumina ceramic with an average pore size of 0.1-1.0 μm.
  5. 5. A gentian violet fluid pen for surgical skin marking according to claim 3, wherein the capillary channel (42) is internally provided with micron-sized grooves radially arranged from the rear end to the front end, and a nib connection opening is provided at the center of the rear end of the capillary channel (42).
  6. 6. A gentian violet fluid pen for surgical skin marking according to claim 3, wherein the restrictor ring (43) is a ring-shaped member having elasticity with an inner diameter smaller than an outer diameter of the porous ceramic core (41).
  7. 7. Gentian violet fluid pen for surgical skin marking according to claim 5, characterized in that the nib assembly (3) comprises: The base (31) is arranged outside the capillary channel (42) and is in threaded connection with the rear end of the pen holder (1); and a nib (32) detachably connected to the lower end of the base (31) and connected to a nib connection opening at the center of the rear end of the capillary channel (42).
  8. 8. Gentian violet fluid pen for surgical skin marking according to claim 6 or 7, characterized in that the nib assembly (3) is screwed with the front end of the barrel (1), the amount of compression of the restrictor ring (43) being adjusted by adjusting the depth of screwing of the nib assembly (3).
  9. 9. Gentian violet fluid pen for surgical skin marking according to claim 7, wherein the nib (32) comprises a plurality of models including at least a fine model with nib diameter of 0.3-0.5mm, a standard model with nib diameter of 0.8-1.2mm and a broad model with nib width of 1.5-2.0 mm.
  10. 10. Gentian violet fluid pen for surgical skin marking according to claim 1, characterized in that the sealing cap (5) comprises: The cover body (51) is used for being detachably and hermetically connected with the rear end of the pen holder (1); the piston (52) is arranged in the liquid storage pipe (2) and forms sliding sealing fit with the inner wall of the liquid storage pipe (2); And the two ends of the elastic element (53) respectively act on the cover body (51) and the piston (52) and are used for providing a pretightening force for pressing the piston (52) against the liquid level of the gentian violet marking liquid.

Description

Gentian violet liquid pen for surgical skin marking Technical Field The invention relates to the technical field of medical appliances, in particular to a special liquid pen for durable and accurate marking on the skin of a patient before a surgical operation. Background In fine operations such as vascular surgery (e.g., varicose vein surgery of lower extremities), plastic surgery (e.g., flap design), clear and durable marking of the skin surface prior to surgery is critical for accurate positioning during surgery. There are a number of marking tools in current clinical practice, but the following systematic problems to be solved still face: (1) The liquid supply stability is poor, and most products adopt a passive liquid supply mode of soaking the pen point by sponge liquid storage. The method is easy to cause colorless starting, broken lines or uneven liquid amount in the writing process, affects the consistency and consistency of marking lines, and simultaneously has the problem that liquid leakage or a pen point is easy to dry when the pen is stopped. (2) The marking durability is insufficient, namely the marking line of the existing tool is easy to blur or fall off when being subjected to physical wiping of a sterilized cotton ball in operation, is not only dissolved by dye, but also rubbed off due to insufficient adhesion between a marking layer and skin, and leads to failure of guiding in operation. (3) Some products integrate complex functions such as arc drawing, measurement and the like, have complex structures and high cost, but do not fundamentally improve the core marking performance. Other products have the pen points which are not replaceable or single in selection, and cannot meet the different demands of different scenes such as ophthalmic microsurgery, general surgery and the like on marking precision and efficiency. Disclosure of Invention The technical problem to be solved by the invention is to overcome the defects of the prior art, and provide the special operation skin marker pen which has strong marking adhesive force, is resistant to physical wiping, stable and accurate in liquid supply and can flexibly adapt to different operation precision requirements. In order to solve the above technical problems, an embodiment of the present application provides a gentian violet liquid pen for surgical skin marking, including: the pen comprises a pen holder, wherein a liquid storage cavity is formed in the pen holder; The liquid storage pipe is arranged in the liquid storage cavity and used for containing gentian violet marking liquid; the pen point assembly is detachably connected to the front end of the pen holder; a flow control module disposed between the reservoir and the nib assembly for directing the gentian violet marking fluid to the replaceable nib assembly at a controlled rate, and And the sealing cover is used for sealing the rear end of the pen holder. Preferably, the gentian violet marking liquid comprises 1.3-1.7% by weight of gentian violet and 1-2% by weight of polyvinylpyrrolidone. Preferably, the flow control module includes: The porous ceramic core is fixed at the front end of the pen holder and is in fluid communication with the outlet of the liquid storage tube; A capillary channel provided between the porous ceramic core and the nib assembly, and The flow limiting ring is arranged between the liquid storage pipe and the porous ceramic core and used for finely adjusting the liquid flow by changing the contact pressure with the porous ceramic core. Preferably, the porous ceramic core is made of hydrophilic alumina ceramic with an average pore size of 0.1-1.0 μm. Preferably, the capillary channel is internally provided with micron-sized grooves which are radially arranged from the rear end to the front end. And a nib connecting opening is arranged in the center of the rear end of the capillary channel. Preferably, the flow-limiting ring is a ring-shaped member having elasticity with an inner diameter smaller than an outer diameter of the porous ceramic core. Further, the flow limiting ring is made of silica gel. Preferably, the nib assembly comprises: the base is arranged outside the capillary channel and is in threaded connection with the rear end of the pen holder; And the nib part is detachably connected to the lower end of the base and is connected with a nib connecting opening in the center of the rear end of the capillary channel. Preferably, the nib assembly is connected with the front end of the pen holder through threads, and the compression amount of the flow limiting ring is adjusted by adjusting the screwing depth of the nib assembly. Preferably, the nib assembly includes a plurality of models including at least a fine model having a nib diameter of 0.3 to 0.5mm, a standard model having a nib diameter of 0.8 to 1.2mm, and a wide model having a nib width of 1.5 to 2.0 mm. Preferably, the sealing cover comprises: The cover body is used for being detachably and her