Medical equipment for absorbing fluid
An integrated medical device with a porous gripping and absorbing portion addresses the limitations of conventional sponges by enhancing absorption capacity and reducing handling frequency, ensuring efficient fluid management during surgeries.
Patent Information
- Application Number
- JP2024003861U
- Authority / Receiving Office
- JP · JP
- Patent Type
- Utility models
- Current Assignee / Owner
- Filing Date
- 2024-11-20
- Publication Date
- 2025-01-17
- Estimated Expiration
- 2034-11-20
AI Technical Summary
Conventional liquid-absorbing sponges for ophthalmic surgeries require multiple pieces due to limited absorption capacity, necessitating frequent changes and additional handling, which disrupts surgical concentration and leads to waste from unused packages.
A single, integrated medical device with a gripping part and liquid-absorbing portion made of a porous material with continuous pores, allowing for rapid and large-volume fluid absorption, reducing the need for multiple devices and handling frequency.
The integrated device efficiently absorbs surgical fluids and body fluids, minimizing the number of required pieces, maintaining surgical focus, and eliminating unnecessary packaging waste.
Smart Images
Figure 0003249870000001_ABST
Abstract
Description
[Technical field]
[0001] This invention relates to a medical device used during ophthalmic surgery to absorb water and body fluids such as tears and irrigation fluid for the surgical field. [Background technology]
[0002] Conventionally, in ophthalmic surgeries such as cataract surgery and glaucoma surgery, a method of absorbing water and body fluids from each tissue of the eye such as irrigation fluid for the surgical field, tears, etc., has been used to ensure the surgical field. Patent Document 1 describes a medical handled sponge in which a hollow plastic rod is heat-sealed and fixed to a liquid-absorbent sponge made of viscose sponge polyurethane foam, and the sponge can be freely operated by holding the handle with the fingertips. [Prior art documents] [Patent documents]
[0003] [Patent Document 1] Practical application 55-619 Summary of the Invention [Problem to be solved by the invention]
[0004] Although absorbent sponges have been used as a method for absorbing water and body fluids from various eye tissues, such as the medical sponge with handle described in Patent Document 1, the sponges have a small amount of absorbency, so many medical sponges with handles are required for one operation. In addition, the sponges with handles have to be changed frequently, which is a factor that hinders concentration on the operation. In addition, there is a problem that those that are packaged in multiple pieces in a sterile package must be discarded even if they are unused. In addition, from the viewpoint of usability, a handle is attached separately from the absorbent sponge, and a process of heat-sealing and fixing a plastic rod to the sponge is required in the manufacturing process.
[0005] The object of the present invention is to provide a medical device for absorbing liquid that can absorb irrigation fluid for the surgical field, moisture in the eye tissues such as tears, and bodily fluids more quickly than conventional devices, and that can absorb large amounts of liquid by utilizing the gripping part, thereby reducing the number of devices used per surgery, reducing the number of components, and enabling the device to be manufactured in fewer steps. [Means for solving the problem]
[0006] In order to achieve the above-mentioned object, the liquid-absorbing medical device of the present invention has a horizontally elongated rectangular parallelepiped gripping portion and a wedge-shaped liquid-absorbing portion extending integrally in the longitudinal direction from one end of the gripping portion, and is characterized in that the gripping portion and the liquid-absorbing portion are formed from a porous material with continuous pores that is flexible at least in a wet state.
[0007] According to the liquid-absorbing medical device configured in this manner, since the gripping part and the liquid-absorbing part are integrated, the entire device is composed only of a porous material having continuous pores. With this configuration, the liquid-absorbing medical device of the present invention can retain the cleaning liquid for the surgical field, the moisture of each tissue of the eye such as tears, and body fluids in the gripping part as well, and can absorb a large amount of liquid as a whole. In addition, since the porous material having continuous pores has a high porosity and the pores are continuously connected to each other, it can absorb liquid more quickly than before. By being able to absorb a large amount of liquid quickly, the number of liquid-absorbing medical devices used for one operation can be reduced, and there is no need to package them in multiple pieces. In addition, the frequency of changing hands is reduced, and there is no disruption to concentration on the operation. In addition, the liquid-absorbing medical device can be manufactured only by processing the porous material having continuous pores, and multiple components are not required. In addition, since the porous material is soft when wet, it is gentle to the surgical field.
[0008] In addition, the medical device for absorbing liquid according to the present invention has a handle portion shaped like a horizontally elongated rectangular parallelepiped, and an absorbing portion extending integrally in the longitudinal direction from one end of the handle portion, the handle portion and the absorbing portion being formed from a porous material with continuous pores that is soft at least in a wet state, and the absorbing portion is wedge-shaped, having an upper surface that slopes downward toward the tip, and a lower surface adjacent to the slope at an acute angle.
[0009] Even with the liquid-absorbing medical device constructed in this manner, the gripping portion and the liquid-absorbing portion are integrated, so that the entire device is constructed only of a porous material having continuous pores. With this configuration, the liquid-absorbing medical device of the present invention can retain the cleaning fluid for the surgical field, the moisture of each tissue of the eye such as tears, and other body fluids in the gripping portion as well, and can absorb a large amount of liquid as a whole. In addition, the porous material having continuous pores has a high porosity and the pores are continuously connected to each other, so that it can absorb liquid more quickly than before. By being able to absorb a large amount of liquid quickly, the number of liquid-absorbing medical devices used for one operation can be reduced, and there is no need to package them in multiple pieces. In addition, the frequency of changing hands is reduced, so that the concentration on the operation is not hindered. In addition, the liquid-absorbing medical device can be manufactured only by processing the porous material having continuous pores, and multiple components are not required. In addition, since the porous material is soft when wet, it is gentle to the surgical field.
[0010] In addition, in the liquid-absorbing medical device of the present invention, it is preferable that the angle between the inclined surface of the liquid-absorbing portion and the adjacent lower surface is 30 degrees or less, and the amount of liquid absorbed by the liquid-absorbing portion and the gripping portion is 5 g or more.
[0011] In the liquid-suction medical device thus constructed, the angle between the inclined surface of the liquid-suction part and the adjacent lower surface is 30 degrees or less, so that the possibility of obstructing the surgeon's view of the surgical field is reduced, and the visibility of the surgical field and the surgeon's awareness are easily matched, so that the surgeon can suck up the part intended by the surgeon. In addition, the amount of liquid absorbed by the liquid-suction part and the gripping part is 5 g or more, so that a larger amount of liquid can be absorbed than with conventional products, and therefore the number of liquid-suction medical devices used for one operation can be reduced and there is no need to package them in multiple units. In addition, the frequency of changing hands is reduced, so that the surgeon's concentration on the operation is not disturbed.
[0012] In addition, in the liquid-absorbing medical device according to the present invention, it is preferable that at least one of the upper surface and the lower surface of the gripping portion is provided with at least one of a recessed portion and a protruding portion.
[0013] In the liquid-absorbing medical device thus configured, fingers are less likely to slip from the grip, making the liquid-absorbing medical device easier to handle and not interfering with concentration on surgery.
[0014] In the liquid-absorbing medical device according to the present invention, it is preferable that the porous material having open pores maintains its rigidity in a dry state and becomes soft in a wet state.
[0015] In the liquid-absorbing medical device configured in this manner, the liquid-absorbing portion that comes into contact with the surgical field is soft and wet, so it is gentle to the surgical field, and the gripping portion is dry and rigid until it becomes wet due to liquid absorption, so that the surgeon can easily handle the liquid-absorbing medical device when picking it up, it is stable when gripped, and does not interfere with the detailed liquid-absorbing work in the surgical field. Effect of the Invention
[0016] The liquid-absorbing medical device according to the present invention has a gripping part and a liquid-absorbing part that quickly absorbs the cleaning fluid in the surgical field, the moisture of the eye tissues such as tears, and other body fluids, and can also absorb a large amount of liquid by using the gripping part, so that the number of liquid-absorbing medical devices used for one operation can be reduced. In addition, the frequency of changing hands is reduced, so that the concentration on the operation is not hindered. In addition, the device can be manufactured only by processing a porous material having continuous pores, and multiple components are not required. In addition, since the porous material is soft in a wet state, it is gentle on the surgical field, and when it maintains its rigidity in a dry state, the fingers are unlikely to slip off the gripping part. In addition, since the angle between the inclined surface and the adjacent lower surface in the liquid-absorbing part is 30 degrees or less, the possibility of obstructing the surgeon's view of the surgical field is reduced. [Brief description of the drawings]
[0017] [Figure 1] 1A and 1B are diagrams showing a first embodiment of a medical device for absorbing liquid according to the present invention, in which (a) is a front view of the medical device for absorbing liquid, and (b) is a perspective view of the medical device for absorbing liquid. [Diagram 2] 1A to 1D are diagrams showing variations in the shape of the acute angle at the tip of the liquid-absorbing part of the liquid-absorbing medical device of the present invention, with (a), (b), (c), and (d) showing the shapes of each variation. [Diagram 3] 1A and 1B are diagrams showing a second embodiment of the liquid-absorbing medical device according to the present invention, in which (a) is a front view of the liquid-absorbing medical device, and (b) is a perspective view of the liquid-absorbing medical device. [Figure 4] FIG. 11 is a perspective view showing another variation in the shape of the grip part in the second embodiment of the liquid-absorbing medical device according to the present invention. [Diagram 5] FIG. 11 is a front view showing a third embodiment of the liquid-absorbing medical device according to the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0018] FIG. 1 is a diagram of a first embodiment of a medical device for absorbing liquid 100 according to the present invention, where (a) is a front view and (b) is a perspective view. In FIG. 1, the medical device for absorbing liquid 100 has a gripping part 10 and a liquid absorbing part 20. The gripping part 10 is a horizontally long rectangular block shape composed of an upper surface 1 and a lower surface 2 that are parallel to each other, and at least three side surfaces (without reference numerals) that are connected perpendicularly between the upper surface 1 and the lower surface 2. The liquid absorbing part 20 is a wedge shape that extends integrally from one end along the longitudinal direction of the gripping part 10, and is composed of an inclined surface 20a and a lower surface 2 that are adjacent to each other and contact each other at their tips, and at least two side surfaces (without reference numerals) between the inclined surface 20a and the lower surface 2, and the side surface and the lower surface 2 are shared with the side surface (without reference numerals) and the lower surface 2 of the gripping part 10, and have an acute angle portion 7 at their tips. During use, the gripping portion 10 is gripped and the acute angled portion 7 at the tip of the liquid suction portion 20 is brought close to or into contact with the surgical field to absorb cleaning fluid from the surgical field, tears and other moisture in the eye tissues and bodily fluids.
[0019] As shown in Fig. 1(b), the dimensions of the liquid-absorbing medical device 100 according to the present invention are: width W1 of the upper surface of the liquid-absorbing part 20 is 44 mm, width W2 of the lower surface 2 is 70 mm, and height H is 15 mm. It is preferable that the liquid-absorbing part 20 and the gripping part 10 absorb 5 g or more. In this case, if the thickness D is 6 mm or more, it is possible to absorb 5 g or more, which is more than the conventional product. If the thickness D exceeds 15 mm, it seems that it is too large for the surgical field. These dimensions are not limited to these values and can be designed appropriately.
[0020] In order to absorb the liquid in the area intended by the surgeon, the angle between the inclined surface 20a in the liquid-absorbing portion 20 and the adjacent lower surface 2, i.e., the angle θ of the acute angle portion 7 in Figure 1, is preferably 30 degrees or less so that the visibility of the surgical field and the surgeon's awareness can be easily aligned, and is preferably 5 degrees or more from the viewpoints of ensuring the amount of liquid absorbed and the shape stability of the acute angle portion.
[0021] FIG. 2 shows variations in the shape of the acute angle portion 7 at the tip of the liquid suction portion 20, and (a), (b), (c), and (d) show the shapes of each variation. The shape of the acute angle portion 7 may be rounded as shown in FIG. 2(a). In this case, it is preferable to make the rounded tip have a radius of 1 mm or less so that the visibility of the surgical field and the surgeon's awareness can be easily matched. Also, as shown in FIG. 2(b), the acute angle portion 7 may be rounded at the tip to provide a surface F1. In this case, for the same reason, it is preferable that the length (height) L1 of the surface F1 is 1.5 mm or less. Also, as shown in FIG. 2(c), the acute angle portion 7 may be rounded at the upper corner obtained by cutting off the tip. In this case, it is preferable that the rounded tip has a radius of 2 mm or less for the same reason. Also, in FIG. 2(d), the acute angle portion 7 may be rounded at the tip to provide a surface F2 that contacts the lower surface 2 at a deeper angle than the lower surface 20a from the middle of the inclined surface 20a. In this case, it is preferable that the length L2 of the surface F2 is 3 mm or less for the same reason.
[0022] In this embodiment, the liquid-absorbing medical device 100 is made of a porous material having continuous pores, and the gripping part 10 and the liquid-absorbing part 10 are integrally formed. As the porous material having continuous pores, a polyvinyl acetal porous material having a pore size of 10 to 200 μm and a porosity of 80 to 95% manufactured by AION Co., Ltd. can be used. For the polyvinyl acetal porous material, a grade that maintains rigidity in a dry state and becomes soft in a wet state is preferable. Regarding sterilization, it is preferable to select a grade that is compatible with autoclave, EOG sterilization, and radiation sterilization.
[0023] In this way, the liquid-absorbing medical device 100 has the gripping part 10 and the liquid-absorbing part 20 integrated together, and the entire device is made of only a porous material having continuous pores. This allows not only the liquid-absorbing part 20 but also the gripping part 10 to retain the cleaning fluid for the surgical field, the moisture of each tissue of the eye such as tears, and other body fluids, and allows a large amount of liquid to be absorbed as a whole. In addition, the porous material having continuous pores has a high porosity and the pores are continuously connected to each other, so that it can absorb liquid more quickly than before. The ability to quickly absorb a large amount of liquid allows the number of liquid-absorbing medical devices 100 used for one surgery to be reduced, and there is no need to package them in multiple pieces. In addition, the frequency of changing hands is reduced, so that concentration on the surgery is not hindered. In addition, the liquid-absorbing medical device 100 can be manufactured only by processing the porous material having continuous pores, and multiple components are not required. In addition, since the porous material is soft when wet, it is gentle on the surgical field. Furthermore, the gripping portion 10 is dry and rigid until the liquid is absorbed and the gripping portion becomes wet, so the surgeon can easily pick up the liquid-absorbing medical device 100, it is stable when gripped, and does not interfere with detailed liquid-absorbing work in the surgical field.
[0024] FIG. 3 shows a second embodiment of the liquid-absorbing medical device 100 according to the present invention, where (a) is a front view and (b) is a perspective view. In FIG. 3, the same parts as those in FIG. 1 are given the same reference numerals and the repeated explanations are omitted. As shown in FIG. 3, a recess 15a having a depth of 1 mm is provided on the upper surface 1 of the gripping portion 10 and the lower surface 2 of the gripping portion 10 to improve ease of holding. As shown in FIG. 4, as another variation of the shape of the gripping portion 10, a mixture of recesses 15a and protrusions 15b may be provided on the upper surface 1 of the gripping portion 10 and the lower surface 2 of the gripping portion 10. In the liquid-absorbing medical device 100 of FIG. 3, the recess 15a has a depth of 1 mm and the protrusion 15b has a height of 1 mm. With such a configuration, fingers are less likely to slip from the gripping portion 10, making the liquid-absorbing medical device 100 easier to handle and not interfering with concentration on surgery. In this embodiment, the recesses 15a and the protrusions 15b are provided on both the upper surface 1 and the lower surface 2 of the gripping portion 10, but this is not limited to this, and the recesses 15a and the protrusions 15b may be provided on only either the upper surface 1 or the lower surface 2.
[0025] Fig. 5 is a front view showing a third embodiment of the liquid-absorbing medical device 100 according to the present invention. In Fig. 5, the same parts as those in Fig. 1 are given the same reference numerals and the duplicated explanations are omitted. In this liquid-absorbing medical device 100, the liquid-absorbing parts 20 extend integrally from both ends of the gripping part 10, and two liquid-absorbing parts 20 are provided on the left and right of the gripping part 10. In such a configuration, when tissue pieces or the like adhere to the acute angle part 7 at the tip of the liquid-absorbing part 20 on one side due to liquid absorption and it becomes difficult to use the device as it is, the liquid-absorbing medical device 100 can be moved and the liquid-absorbing part 20 on the other side can be used to absorb moisture and body fluids from each tissue of the eye such as tears. [Explanation of symbols]
[0026] 1 Top side 2 Bottom side 7 Sharp corners 10 Gripping part 15a Recess 15b Convex part 20 Liquid suction part 20a Slope 100 Medical equipment for absorbing liquid θ Angle of the tip of the suction part
Claims
1. The device has a horizontally long rectangular parallelepiped gripping portion and a wedge-shaped liquid absorbing portion extending integrally in the longitudinal direction from one end of the gripping portion along the longitudinal direction, A liquid-absorbing medical device, characterized in that the gripping part and the liquid-absorbing part are formed from a porous material with continuous pores that is flexible at least in a wet state.
2. The device has a horizontally long rectangular parallelepiped gripping portion and a liquid suction portion extending integrally in the longitudinal direction from one end of the gripping portion along the longitudinal direction, The gripping portion and the liquid absorbing portion are formed of a porous material having continuous pores that is flexible at least in a wet state, The liquid-absorbing medical device is characterized in that the liquid-absorbing portion is wedge-shaped, having an upper surface that slopes downward toward the tip, and a lower surface that is adjacent to the slope and forms an acute angle with the lower surface.
3. the angle between the inclined surface and the adjacent lower surface of the liquid suction portion is 30 degrees or less; 3. The liquid-absorbing medical device according to claim 2, wherein the amount of liquid absorbed by said liquid-absorbing part and said gripping part is 5 g or more.
4. 4. The liquid-absorbing medical device according to claim 1, wherein at least one of a recess and a protrusion is provided on at least one of an upper surface and a lower surface of the gripping portion.
5. 3. The liquid-absorbing medical device according to claim 1, wherein the porous material having open pores maintains rigidity in a dry state and becomes soft in a wet state.
Citation Information
Patent Citations
JP1980000619U