TWI731518B - Medical drainage tube made of silicone - Google Patents

Abstract

A medical drainage tube made of silicone includes a silicon drainage tube having first and second drainage parts, and the first drainage part forms at least one first drainage hole and at least one second drainage hole, The second drainage portion is formed with at least one third drainage hole and at least one fourth drainage hole, and a drainage channel is formed between the first drainage portion and the second drainage portion; wherein the outer side of the first drainage portion forms a first drainage The outer side of the second drainage portion forms a second drainage surface, the edge of the first drainage hole and the first drainage surface forms a first fillet, and the second drainage hole is connected to the first drainage surface. The edge forms a second rounded corner to increase the drainage efficiency of the first drainage surface; the edge of the third drainage hole and the second drainage surface forms a third rounded corner, the fourth drainage hole and the second drainage surface The edge of the surface joint forms a fourth rounded corner, so as to increase the drainage efficiency of the second drainage surface.

Description

Medical drainage tube made of silicone

The present invention relates to a medical drainage tube, especially a medical drainage tube made of silicone. The function of the drainage tube is mainly to use the principle of negative pressure to remove blood and secretions in the tissues of the patient. (Secretion) to promote wound healing and tissue repair, the drainage tube has a plurality of drainage holes, and a drainage channel is formed in the drainage tube; when the drainage tube is left in the patient’s wound, the blood and secretions pass through The plurality of drainage holes enter the drainage channel, and the blood and secretions are discharged from the wound of the patient through the drainage channel.

The conventional technology is shown in Figures 1 to 5. The main technology is to use punching to form a plurality of drainage holes 91-94 in the drainage tube 9, wherein the drainage holes 91, 92 are distributed in the upper drainage part in a staggered manner. 95. The drainage holes 93, 94 are distributed in the lower drainage portion 96 in a staggered manner, and a drainage channel 97 is formed in the drainage tube 9, and the drainage tube 9 has a plurality of ribs 98 on the inner side; when the drainage tube 9 is squeezed The plurality of ribs 98 can support the upper drainage portion 95 and the lower drainage portion 96 at a minimum distance to maintain the function of the drainage channel 97. When punching the drainage tube 9, a punching cutter 910 will penetrate the upper drainage portion 95 and the lower drainage portion 96 to form drainage holes 91, 93 and The drainage holes 92, 94 are such that the position of the drainage hole 93 corresponds to the position of the drainage hole 91 (as shown in FIG. 2), and the position of the drainage hole 94 corresponds to the position of the drainage hole 92 (as shown in FIG. 3).

Please refer to FIG. 4, which is an A-A cross-sectional view of FIG. 2. In the drainage position of FIG. 4, the drainage holes 91, 93 are located on the right side 9a of the drainage tube 9, and the left side 9b of the drainage tube 9 has no drainage function. Please refer to FIG. 5, which is a B-B cross-sectional view of FIG. 3. In the drainage position of FIG. 5, the drainage holes 92, 94 are located on the left side 9b of the drainage tube 9, and the right side 9a of the drainage tube 9 has no drainage function. Please refer to Figures 6 and 7, when the drainage tube 9 is squeezed, the plurality of ribs 98 support the upper drainage portion 95 and the lower drainage portion 96 at a minimum distance; in the drainage position of Figure 6, drainage holes 91, 93 Located on the right side 9a of the drainage tube 9, the effective area of the drainage channel 97 is greatly reduced to a transverse area 97a; in the drainage position of FIG. 7, the drainage holes 91, 93 are located on the left side 9b of the drainage tube 9, and the effective area of the drainage channel 97 is The area is significantly reduced to a horizontal area of 97b. Therefore, the technology of punching to form a plurality of drainage holes will cause uneven distribution of drainage effects of the drainage tube, and there is still a need for improvement of the conventional technology.

4 and 5, the drainage holes 91, 93 and the drainage holes 92, 94 are formed on the upper drainage portion 95 and the lower drainage portion 96 of the drainage tube 9 by punching cutter heads (not shown in the figure). Generally, the punching technology cannot modify the edges of the drainage holes 91-94, and the punching technology may form a burr 99 on the edges of the drainage holes 92, 94, which affects the drainage effect of the drainage holes 92, 94. Therefore, there is still a need for improvement of the conventional technology.

The object of the present invention is to provide a medical drainage tube made of silicone, which includes a silicon drainage tube having first and second drainage parts, The first drainage portion forms at least one first drainage hole and at least one second drainage hole, the second drainage portion forms at least one third drainage hole and at least one fourth drainage hole, the first drainage portion and the second drainage hole A drainage channel is formed in the middle of the portion; wherein the outer side of the first drainage portion forms a first drainage surface, the outer side of the second drainage portion forms a second drainage surface, and the edge of the first drainage hole and the first drainage surface A first rounded corner is formed, the edge of the second drainage hole and the first drainage surface forms a second rounded corner, and the edge of the third drainage hole and the second drainage surface forms a third Rounded corners, the edge of the fourth drainage hole and the second drainage surface forms a fourth rounded corner; wherein the first drainage hole and the second drainage hole form a first distance, and the first drainage hole and the second drainage hole form a first distance. The drainage holes form a first staggered interval, the third drainage hole and the fourth drainage hole form a second interval, the third drainage hole and the fourth drainage hole form a second staggered interval, the first drainage hole and the third drainage hole form a second staggered interval. The drainage holes form a third staggered interval, and the second drainage holes and the fourth drainage hole form a fourth staggered interval.

Another object of the present invention is to provide a medical drainage tube made of silicone, including a silicon drainage tube, the silicon drainage tube has first and second drainage parts, the first drainage part forms at least one first drainage Hole and at least one second drainage hole, the second drainage portion forms at least one third drainage hole and at least one fourth drainage hole, and a drainage channel is formed between the first drainage portion and the second drainage portion; wherein the first drainage portion The outer side of the drainage portion forms a first drainage surface, the outer side of the second drainage portion forms a second drainage surface, the edge of the first drainage hole and the first drainage surface forms a first chamfer corner, The edge of the second drainage hole and the first drainage surface forms a second chamfer, and the edge of the third drainage hole and the second drainage surface forms a first Three chamfers, the edge of the fourth drainage hole and the second drainage surface forms a fourth chamfer; wherein the first drainage hole and the second drainage hole form a first distance, and the first drainage hole and the second drainage hole form a first distance. Two drainage holes form a first staggered interval, the third drainage hole and the fourth drainage hole form a second interval, the third drainage hole and the fourth drainage hole form a second staggered interval, the first drainage hole and the first drainage hole form a second staggered interval. The three drainage holes form a third staggered interval, and the second drainage hole and the fourth drainage hole form a fourth staggered interval.

The gain effect of the present invention (1) is that the first rounded corner and the second rounded corner can increase the drainage efficiency of the first drainage surface, and the third rounded corner and the fourth rounded corner can increase the second drainage surface The drainage efficiency.

The effect (2) of the gain of the present invention is that the first pitch, the second pitch, the first staggered pitch, the second staggered pitch, the third staggered pitch, and the fourth staggered pitch can cause the silicon to drain The tube has evenly distributed drainage positions.

The gain effect (3) of the present invention is that the first chamfer and the second chamfer can increase the drainage efficiency of the first drainage surface, and the third chamfer and the fourth chamfer can increase the second drainage surface The drainage efficiency.

1‧‧‧Silicone drainage tube

1a‧‧‧The right side of the silicon drainage tube

1b‧‧‧The left side of the silicon drainage tube

1d‧‧‧Outer diameter of silicon drainage tube

10‧‧‧First Drainage Department

10a‧‧‧First drainage surface

11‧‧‧First drainage hole

12‧‧‧Second drainage hole

20‧‧‧Second Drainage Department

20a‧‧‧Second drainage surface

23‧‧‧Third drainage hole

24‧‧‧Fourth drainage hole

30‧‧‧Front end of silicon drainage tube

31‧‧‧Opening

40‧‧‧Drainage channel

40a‧‧‧Horizontal area

40b‧‧‧Horizontal area

40c‧‧‧Horizontal area

40d‧‧‧Horizontal area

41‧‧‧Protrusion Rib

50‧‧‧Silicon drainage tube end

60‧‧‧Extension tube

R1‧‧‧First fillet

R2‧‧‧Second fillet

R3‧‧‧third fillet

R4‧‧‧Fourth round corner

C1‧‧‧First chamfer

C2‧‧‧Second Chamfer

C3‧‧‧third chamfer

C4‧‧‧Fourth chamfer

X‧‧‧X axis

X1‧‧‧First pitch

X2‧‧‧Second pitch

Y‧‧‧Y axis

Y1‧‧‧First staggered pitch

Y2‧‧‧Second staggered pitch

Y3‧‧‧Third staggered pitch

Y4‧‧‧Fourth staggered pitch

9‧‧‧Drainage tube

9a‧‧‧The right side of the drainage tube

9b‧‧‧The left side of the drainage tube

9d‧‧‧Outer diameter of drainage tube

910‧‧‧Punching cutter head

91‧‧‧Drainage hole

92‧‧‧Drainage hole

93‧‧‧Drainage hole

94‧‧‧Drainage hole

95‧‧‧Upper drainage department

96‧‧‧Lower drainage department

97‧‧‧Drainage channel

97a‧‧‧Horizontal area

97b‧‧‧Horizontal area

98‧‧‧Protrusion Rib

99‧‧‧Raw edges

Figure 1 is a three-dimensional schematic diagram of the conventional technology.

2 and 3 are schematic diagrams showing the positions of drainage holes in the prior art.

Fig. 4 is a sectional view taken along the line A-A in Fig. 2.

Fig. 5 is a B-B sectional view of Fig. 3.

6 and FIG. 7 are schematic diagrams showing that the drainage channel of the prior art greatly reduces the effective area.

Fig. 8 is a three-dimensional schematic diagram of a preferred embodiment of the present invention.

Fig. 9 is another perspective view of the preferred embodiment of the present invention.

Fig. 10 is a perspective exploded schematic view of a preferred embodiment of the present invention.

Figure 11 is a schematic diagram of the positions of the first, second, third and fourth drainage holes of the present invention.

Fig. 12 is a schematic diagram of the distribution of the first drainage holes and the second drainage holes of the present invention.

Fig. 13 is a schematic diagram of the distribution of the third drainage holes and the fourth drainage holes of the present invention.

Fig. 14 is a cross-sectional view taken along the line C-C in Fig. 10.

Fig. 15 is a cross-sectional view taken along the line D-D in Fig. 10.

16 and 17 are schematic diagrams of maintaining the effective area of the drainage channel of the present invention.

Figures 18 and 19 are schematic diagrams of the second embodiment of the present invention.

Fig. 20 is a comparison chart of the drainage test of the present invention and the conventional product.

In order to further understand the features, technical means, and specific functions and objectives achieved by the present invention, more specific embodiments are listed, followed by detailed descriptions of the figures and figures.

Please refer to Figures 8-15. In a preferred embodiment, the medical drainage tube of the present invention includes a silicon drainage tube 1 having a first drainage portion 10 and a second drainage portion 20. The first drainage portion 10 forms at least one first drainage hole 11 and at least one second drainage hole 12, and the second drainage portion 20 forms at least one third drainage hole 23 and at least one fourth drainage hole 24. The silicon The front end 30 of the mass drainage tube 1 forms an opening 31, a drainage channel 40 is formed between the first drainage portion 10 and the second drainage portion 20, and a plurality of ribs 41 are integrally formed on the inner side of the first drainage portion 10; First cited The flow hole 11 and the second drainage hole 12 form a first spacing X1 along an X axis X, and the first drainage hole 11 and the second drainage hole 12 form a first staggered spacing Y1 along a Y axis Y. The third drainage hole 23 and the fourth drainage hole 24 form a second distance X2 along the X axis X, and the third drainage hole 23 and the fourth drainage hole 24 form a second stagger along the Y axis Y Space Y2, the first drainage hole 11 and the third drainage hole 23 form a third staggered spacing Y3 along the Y axis Y, and the second drainage hole 12 and the fourth drainage hole 24 are formed along the Y axis Y A fourth staggered interval Y4 enables the silicon drainage tube 1 to have evenly distributed drainage positions.

Enumerate the drainage effect of the silica drainage tube 1 as follows: when the silica drainage tube 1 is left in the wound of the patient (not shown in the figure), under the action of negative pressure, the blood in the patient’s tissues (blood) and secretions (secretion) enter the drainage channel 40 through the first drainage hole 11, the second drainage hole 12, the third drainage hole 23, and the fourth drainage hole 24, and the blood and secretions then The drainage channel 40 drains the wound of the patient to promote wound healing and tissue repair.

Enumerating and explaining the way for the silica drainage tube 1 to further increase the drainage efficiency is as follows: the outer side of the first drainage portion 10 forms a first drainage surface 10a, the outer side of the second drainage portion 20 forms a second drainage surface 20a, the The edge of the first drainage hole 11 and the first drainage surface 10a forms a first rounded corner R1, and the edge of the second drainage hole 12 and the first drainage surface 10a forms a second rounded corner R2, thereby increasing the The drainage efficiency of the first drainage surface 10a; the edge of the third drainage hole 23 and the second drainage surface 20a forms a third rounded corner R3, and the edge of the fourth drainage hole 24 and the second drainage surface 20a forms A fourth rounded corner R4 to increase the drainage efficiency of the second drainage surface 20a (such as Shown in Figure 14 and Figure 15).

The molding methods of each drainage hole and each rounded corner are listed as follows: for example, but not limited to, the silicon drainage tube 1 is made by injection molding, wherein the first drainage hole 11 and the first round The corner R1 is integrally formed in the first drainage part 10 in a silicon injection molding die (not shown); the second drainage hole 12 and the second fillet R2 are integrally formed in the silicon injection molding die. The first drainage portion 10; the third drainage hole 23 and the third fillet R3 are integrally formed in the second drainage portion 20 in the silicon injection molding die; the fourth drainage hole 24 and the fourth round The angle R4 is integrally formed on the second drainage part 20 in the silicon injection molding mold.

The preferred radius of each rounded corner is listed as follows: the radius of the first rounded corner R1 is less than or equal to the thickness of the first drainage part 10, and the preferred range of the radius of the first rounded corner R1 is between 0.10 mm and 0.35. mm; the radius of the second rounded corner R2 is less than or equal to the thickness of the first drainage portion 10, the preferred range of the radius of the second rounded corner R2 is between 0.10mm to 0.35mm; the third rounded corner R3 The radius of is less than or equal to the thickness of the second drainage part 20, the preferred range of the radius of the third fillet R3 is between 0.10mm to 0.35mm; the radius of the fourth fillet R4 is less than or equal to the second drainage The thickness of the portion 20 and the preferred range of the radius of the fourth round corner R4 are between 0.10 mm and 0.35 mm.

Please refer to FIGS. 8-10. In a preferred embodiment, the end 50 of the silicon drainage tube 1 can be combined with an extension tube 60. For example, but not limited to, the silicon drainage tube 1 is over-molded. ) Is formed at one end of the extension tube 60 so that the end 50 of the silicon drainage tube 1 is coupled to the extension tube 60.

Please refer to Figures 14 to 15, in the drainage position of Figure 14, the first drainage hole 11 of the first drainage portion 10 is located on the right side 1a of the silicon drainage tube 1, and the fourth drainage of the second drainage portion 20 The hole 24 is located on the left side 1b of the silicon drainage tube 1. At this drainage position, both the right side 1a and the left side 1b of the silicon drainage tube 1 have drainage functions. In the drainage position of FIG. 15, the second drainage hole 12 of the first drainage portion 10 is located on the left side 1b of the silicon drainage tube 1, and the third drainage hole 23 of the second drainage portion 20 is located on the silicon drainage tube 1. On the right side 1a, at this drainage position, both the right side 1a and the left side 1b of the silicon drainage tube 1 have drainage effects.

Please refer to FIGS. 16 and 17, when the silicon drainage tube 1 is squeezed, the plurality of ribs 41 support the first drainage portion 10 and the second drainage portion 20 at a minimum distance; in the drainage position of FIG. 16 The first drainage hole 11 of the first drainage portion 10 is located on the right side 1a of the silicon drainage tube 1, and the fourth drainage hole 24 of the second drainage portion 20 is located on the left side 1b of the silicon drainage tube 1. The drainage channel The effective area of 40 is still maintained at the sum of the horizontal area 40a and the horizontal area 40b; in the drainage position of FIG. 17, the second drainage hole 12 of the first drainage part 10 is located on the left side 1b of the silicon drainage tube 1, and the second drainage hole 12 The third drainage hole 23 of the drainage portion 20 is located on the right side 1a of the silicon drainage tube 1, and the effective area of the drainage channel 40 is still maintained at the sum of the lateral area 40c and the lateral area 40d. Therefore, the present invention can alleviate the problem of uneven distribution of drainage effects of the prior art.

Please refer to FIGS. 18 and 19, the second embodiment is substantially the same as the preferred embodiment, except that the only difference is that the edge of the first drainage hole 11 and the first drainage surface 10a forms a first chamfer C1, the edge of the second drainage hole 12 and the first drainage surface 10a forms a second chamfer C2, thereby increasing the drainage efficiency of the first drainage surface 10a; the third drainage hole 23 and the second drainage surface The connecting edge of 20a forms a third chamfer C3, and the connecting edge of the fourth drainage hole 24 and the second drainage surface 20a forms a fourth chamfer C4, so as to increase the drainage efficiency of the second drainage surface 20a.

The molding methods of each drainage hole and each chamfer are listed as follows: for example, but not limited to, the silicon drainage tube 1 is made by injection molding, wherein the first drainage hole 11 and the first inverted The corner C1 is integrally formed in the first drainage part 10 in a silicon injection molding die (not shown); the second drainage hole 12 and the second chamfer C2 are integrally formed in the silicon injection molding die. The first drainage portion 10; the third drainage hole 23 and the third chamfer C3 are integrally formed in the second drainage portion 20 in the silicon injection molding mold; the fourth drainage hole 24 and the fourth inverted The angle C4 is integrally formed on the second drainage part 20 in the silicon injection molding mold.

The preferred size of each chamfer is listed as follows: the size of the first chamfer C1 is less than or equal to the thickness of the first drainage portion 10, and the preferred range of the size of the first chamfer C1 is between 0.10 mm and 0.35 mm; the size of the second chamfer C2 is less than or equal to the thickness of the first drainage part 10, the preferred range of the size of the second chamfer C2 is between 0.10mm to 0.35mm; the third chamfer C3 The size of is less than or equal to the thickness of the second drainage part 20, the preferred range of the size of the third chamfer C3 is between 0.10mm to 0.35mm; the size of the fourth chamfer C4 is less than or equal to the second drainage The thickness of the portion 20 and the size of the fourth chamfer C4 preferably range from 0.10 mm to 0.35 mm.

Please refer to Figure 1, Figure 8 and Figure 20 to test the conventional product and the fluid mass of the present invention; among them, the outer diameter 9d of the drainage tube 9 of the conventional product The outer diameter 1d of the silicon drainage tube 1 of the present invention is both 7mm, and the samples of the same length are selected for both of them. The test condition is to test the drainage volume of the two in a negative pressure system with a negative pressure value of 65mbar. The time is 30 seconds, and the number of tests is 3 times. The test result of the conventional product is 222.5g (g) for the first test, 222g (g) for the second test, and 223g (g) for the third test. The test result of the present invention is 261g (g) of drainage in the first test, 264g (g) in the second test, and 265g (g) in the third test. Therefore, the drainage volume of the present invention is significantly better than the drainage volume of conventional products.

1‧‧‧Silicone drainage tube

1d‧‧‧Outer diameter of silicon drainage tube

10a‧‧‧First drainage surface

11‧‧‧First drainage hole

12‧‧‧Second drainage hole

30‧‧‧Front end of silicon drainage tube

31‧‧‧Opening

50‧‧‧Silicon drainage tube end

60‧‧‧Extension tube

Claims (10)

A medical drainage tube made of silicone rubber, including: A silicon drainage tube (1) has a first drainage portion (10) and a second drainage portion (20). The first drainage portion (10) forms at least one first drainage hole (11) and at least one second drainage hole (11). Two drainage holes (12), the second drainage portion (20) forms at least one third drainage hole (23) and at least one fourth drainage hole (24), the first drainage portion (10) and the second drainage portion (20) A drainage channel (40) is formed in the middle, and a plurality of convex ribs (41) are integrally formed on the inner side of the first drainage part (10); The outer side of the first drainage portion (10) forms a first drainage surface (10a), the outer side of the second drainage portion (20) forms a second drainage surface (20a), the first drainage hole (11) and The connecting edge of the first drainage surface (10a) forms a first round corner (R1), and the connecting edge of the second drainage hole (12) and the first drainage surface (10a) forms a second round corner (R2) , So as to increase the drainage efficiency of the first drainage surface (10a); Wherein the edge of the third drainage hole (23) and the second drainage surface (20a) forms a third fillet (R3), and the fourth drainage hole (24) is connected to the second drainage surface (20a). The edge forms a fourth rounded corner (R4) to increase the drainage efficiency of the second drainage surface (20a); The first drainage hole (11) and the second drainage hole (12) form a first distance (X1) along an X axis (X), and the first drainage hole (11) and the second drainage hole ( 12) A first staggered pitch (Y1) is formed along a Y axis (Y), and the third drainage hole (23) and the fourth drainage hole (24) form a second gap along the X axis (X). Distance (X2), the third drainage hole (23) and the fourth drainage hole (24) form a second staggered distance (Y2) along the Y axis (Y), the first drainage hole (11) and the The third drainage hole (23) forms a third staggered pitch (Y3) along the Y axis (Y), and the second drainage hole (12) and the fourth drainage hole (24) are along the Y axis (Y). A fourth staggered interval (Y4) is formed, so that the silicon drainage tube (1) has evenly distributed drainage positions. The medical drainage tube made of silicone according to item 1 of the scope of patent application, wherein the first pitch (X1) is less than or equal to the second pitch (X2), and the first interlaced pitch (Y1) is less than or equal to the first pitch (X2). Two staggered pitches (Y2), the third staggered pitch (Y3) is less than or equal to the fourth staggered pitch (Y4). The medical drainage tube made of silicone according to the first item of the scope of patent application, wherein the radius of the first rounded corner (R1) is less than or equal to the thickness of the first drainage part (10), and the second rounded corner (R2) The radius of) is less than or equal to the thickness of the first drainage portion (10), the radius of the third rounded corner (R3) is less than or equal to the thickness of the second drainage portion (20), and the fourth rounded corner (R4) The radius of is smaller than or equal to the thickness of the second drainage part (20). The medical drainage tube made of silicone according to the first item of the scope of patent application, wherein the front end (30) of the silicon drainage tube (1) is formed with an opening (31), and the end of the silicon drainage tube (1) (50) Can be combined with an extension tube (60). A medical drainage tube made of silicone rubber, including: A silicon drainage tube (1) has a first drainage portion (10) and a second drainage portion (20). The first drainage portion (10) forms at least one first drainage hole (11) and One second drainage hole (12) is missing. The second drainage portion (20) forms at least one third drainage hole (23) and at least one fourth drainage hole (24). The first drainage portion (10) and the A drainage channel (40) is formed between the two drainage parts (20), and a plurality of ribs (41) are integrally formed on the inner side of the first drainage part (10); The outer side of the first drainage portion (10) forms a first drainage surface (10a), the outer side of the second drainage portion (20) forms a second drainage surface (20a), the first drainage hole (11) and The connecting edge of the first drainage surface (10a) forms a first chamfer (C1), and the connecting edge of the second drainage hole (12) and the first drainage surface (10a) forms a second chamfer (C2) , So as to increase the drainage efficiency of the first drainage surface (10a); Wherein the edge of the third drainage hole (23) and the second drainage surface (20a) forms a third chamfer (C3), and the fourth drainage hole (24) is connected to the second drainage surface (20a). The edge forms a fourth chamfer (C4) to increase the drainage efficiency of the second drainage surface (20a); The first drainage hole (11) and the second drainage hole (12) form a first distance (X1) along an X axis (X), and the first drainage hole (11) and the second drainage hole ( 12) A first staggered interval (Y1) is formed along a Y axis (Y), and the third drainage hole (23) and the fourth drainage hole (24) form a second interval along the X axis (X) (X2), the third drainage hole (23) and the fourth drainage hole (24) form a second staggered interval (Y2) along the Y axis (Y), the first drainage hole (11) and the Three drainage holes (23) form a third staggered pitch (Y3) along the Y axis (Y), and the second drainage hole (12) and the fourth drainage hole (24) are formed along the Y axis (Y) First The four staggered intervals (Y4) make the silicon drainage tube (1) have evenly distributed drainage positions. The medical drainage tube made of silicone according to item 5 of the scope of patent application, wherein the first pitch (X1) is smaller than or equal to the second pitch (X2), and the first interlaced pitch (Y1) is smaller than or equal to the first pitch (X1) Two staggered pitches (Y2), the third staggered pitch (Y3) is less than or equal to the fourth staggered pitch (Y4). The medical drainage tube made of silicone according to the 5th item of the scope of patent application, wherein the radius of the first chamfer (C1) is less than or equal to the thickness of the first drainage part (10), and the second chamfer (C2) The radius of) is less than or equal to the thickness of the first drainage portion (10), the radius of the third chamfer (C3) is less than or equal to the thickness of the second drainage portion (20), and the fourth chamfer (C4) The radius of is smaller than or equal to the thickness of the second drainage part (20). A medical drainage tube made of silicone according to item 5 of the scope of patent application, wherein the front end (30) of the silicon drainage tube (1) is formed with an opening (31), and the end of the silicon drainage tube (1) (50) Can be combined with an extension tube (60). A medical drainage tube made of silicone rubber, including: A silicon drainage tube (1) has a first drainage portion (10) and a second drainage portion (20). The first drainage portion (10) forms at least one first drainage hole (11) and at least one second drainage hole (11). Two drainage holes (12), the second drainage portion (20) forms at least one third drainage hole (23) and at least one fourth drainage hole (24), the first drainage portion (10) and the second drainage portion (20) A drainage channel (40) is formed in the middle, and a plurality of convex ribs (41) are integrally formed on the inner side of the first drainage part (10); The first drainage hole (11) and the second drainage hole (12) form a first distance (X1) along an X axis (X), and the first drainage hole (11) and the second drainage hole ( 12) A first staggered interval (Y1) is formed along a Y axis (Y), and the third drainage hole (23) and the fourth drainage hole (24) form a second interval along the X axis (X) (X2), the third drainage hole (23) and the fourth drainage hole (24) form a second staggered interval (Y2) along the Y axis (Y), the first drainage hole (11) and the Three drainage holes (23) form a third staggered pitch (Y3) along the Y axis (Y), and the second drainage hole (12) and the fourth drainage hole (24) are formed along the Y axis (Y) A fourth staggered pitch (Y4) enables the silicon drainage tube (1) to have evenly distributed drainage positions. The medical drainage tube made of silicone according to item 9 of the scope of patent application, wherein the first pitch (X1) is smaller than or equal to the second pitch (X2), and the first interlaced pitch (Y1) is smaller than or equal to the first pitch (X2). Two staggered pitches (Y2), the third staggered pitch (Y3) is less than or equal to the fourth staggered pitch (Y4).

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