JP2020130666A - Medical suction apparatus - Google Patents

Abstract

To provide a medical suction apparatus that evenly irradiates a periphery of a suction tube.SOLUTION: A medical suction apparatus 1 includes: a hollow body part 11; a suction tube 12 inserted into the body part 11 and through which a suction object liquid L accumulated in an operative field is sucked; a tubular light guide member 13 through which the suction tube 12 exposed from a tip of the body part 11 passes; and a light emission part 14 installed inside the body part 11 and emitting light to the light guide member 13. The light guide member 13 preferably has an irregularity part in a tip of the peripheral surface thereof.SELECTED DRAWING: Figure 2

Description

The present invention relates to a medical aspirator for aspirating a suction material of a liquid stored in a surgical field in a surgical operation or the like.

In surgical operations and the like, medical aspirators are known that suck liquids such as blood bleeding during surgery, body fluids leaked from tissues in the body, and cleaning fluids used during surgery. When aspirating a liquid suction material stored in the surgical field using a medical aspirator, the lighting of the operating room, head lamp, etc. are used to illuminate the suction site (hereinafter referred to as the "suction site"). Lighting devices and the like mounted on surgical instruments are used. However, these lights have insufficient illuminance depending on the surgical site and surgical procedure (for example, in the case of surgery in the deep part of the body or in the case of surgery that minimizes invasiveness such as laparoscopic surgery). Because of this, the suction site may be blurred.

In order to solve such a problem, an illuminated suction device to which an illumination such as an optical fiber cable or an LED is attached is disclosed (see, for example, Patent Document 1).

JP-A-2007-195930

However, the suction device of Patent Document 1 has a structure in which the light emitting portion of the optical fiber cable is fixed to one side of the suction tube, and the shadow of the suction tube is formed, so that the periphery of the suction tube cannot be uniformly illuminated. There is.

Therefore, an object of the present invention is to provide a medical suction device capable of uniformly illuminating the periphery of the suction tube.

In order to solve the above problems, the medical suction device according to the present invention has a hollow main body, a suction tube for sucking the liquid stored in the surgical field through the main body, and a suction tube exposed from the main body. It is characterized by including a tubular light guide member that passes through the inside and a light emitting unit that is installed in the main body and irradiates the light guide member with light.

According to such a configuration, since the light guide member is formed in a tubular shape through which the suction tube passes, the light emitted from the light guide member does not cast a shadow by the suction tube and uniformly surrounds the suction tube. Can be illuminated by.

It is desirable that the light guide member has an uneven portion at the tip of the peripheral surface.

As described above, since the uneven portion is provided at the tip portion of the peripheral surface, the light passing through the light guide member is likely to be emitted to the surroundings (direction radially away from the suction tube) at the uneven portion at the tip portion. As a result, the periphery of the suction site can be uniformly illuminated.
More specifically, when there is no uneven portion, the proportion of light emitted from the tip of the light guide member increases, and when the liquid is sucked by the suction tube, the tip of the light guide member touches the tissue of the body. When approaching, the light emitted from the tip cannot be used effectively. However, since the uneven portion at the tip of the peripheral surface reduces the amount of light emitted from the tip of the light guide member and increases the amount of light emitted from the peripheral surface, the tip of the suction tube can be used as a body tissue. It is possible to illuminate the periphery of the tip of the suction tube well even if it is brought close to.

The uneven portion may have a structure having a plurality of spherical portions at the tip of the peripheral surface of the light guide member.

According to such a configuration, the illuminance of the light emitted from the tip of the light guide member can be effectively increased, damage to the internal tissue of the part where the suction device is used can be prevented, and the light guide can be prevented. The manufacture of members is also easy.

The uneven portion may have a structure having a plurality of grooves at the tip of the peripheral surface of the light guide member.

According to such a configuration, the illuminance of the light emitted from the tip of the light guide member can be effectively increased, and the light guide member can be easily manufactured.

The uneven portion may have a structure having a plurality of recessed portions at the tip of the peripheral surface of the light guide member.

According to such a configuration, the illuminance of the light emitted from the tip of the light guide member can be effectively increased, and the light guide member can be easily manufactured.

The uneven portion may have a structure having a plurality of hemispherical convex portions at the tip of the peripheral surface of the light guide member.

According to such a configuration, the illuminance of the light emitted from the tip of the light guide member can be effectively increased, and damage to the internal tissue of the portion where the aspirator is used can be prevented.

According to the present invention, the light emitted from the light guide member can uniformly illuminate the periphery of the suction tube without forming a shadow by the suction tube.

It is a figure which shows the appearance structure and the use state of the medical aspirator which concerns on one Embodiment of this invention. It is sectional drawing which shows the internal structure of the medical aspirator which concerns on one Embodiment of this invention. It is a partial cross-sectional view which shows the arrangement of a light emitting part. It is sectional drawing which shows an example of the tip shape of a light guide member. It is a figure (a)-(c) which shows another example of the tip shape of a light guide member.

The medical aspirator according to the embodiment of the present invention will be described in detail with reference to the drawings as appropriate.

As shown in FIGS. 1 and 2, the medical aspirator 1 (hereinafter, simply abbreviated as “aspirator 1”) according to the present embodiment is a blood bleeding during an operation and a tissue in the body in a surgical operation or the like. It is used to aspirate a suction material L of a liquid such as a body fluid leaked from T or a cleaning liquid used during surgery. The use of the aspirator 1 is not limited to the case where it is used for surgery or the like, and is used, for example, for aspirating a suction material L of a liquid such as saliva or blood stored in the oral cavity of a patient during dental treatment or the like. May be done. The suction device 1 mainly includes a main body portion 11, a suction tube 12, a light guide member 13, and a light emitting portion 14. As described above, since the suction device 1 includes the light emitting unit 14, the suction device L can suck the suctioned object L while illuminating the suction site S with sufficient illuminance to provide a clear surgical field. ..

The main body 11 is a hollow casing in which the suction tube 12 is inserted and the light emitting portion 14 is installed inside. When the aspirator 1 is used during surgery, dental treatment, etc., the main body 11 is gripped by a user of the aspirator 1 such as a doctor. A light guide member 13 is attached to the tip of the main body 11 (the end of the suction object L near the suction portion S), and to the rear end of the main body 11 (the end far from the suction portion S). , The connecting portion 15 is attached.

The connecting portion 15 is provided with a through hole 15a penetrating in the pipe axis direction of the suction pipe 12, and the through hole 15a contains a rear end portion of the suction pipe 12. Further, a hose 16 for connecting a suction device (not shown) having a suction pump or the like and the suction device 1 is detachably attached to the outer periphery of the connecting portion 15. The hose 16 is generally made of a transparent resin such as PVC so that the suction material L of the liquid sucked by the suction device 1 can be observed from the outside, and is preferably disposable from the viewpoint of hygiene.

Further, the end surface Fs of the switch 145 of the light emitting unit 14 attached to the rear end of the main body 11 is located on the front end side of the rear end surface Fb of the main body 11. Therefore, when the hose 16 is connected to the connecting portion 15, the main body portion 11 and the switch 145 are less likely to interfere with the hose 16.

The material of the main body 11 is not particularly limited, and may be made of resin or metal. Considering the operability of the aspirator 1, the main body 11 is preferably made of a lightweight resin.

The suction tube 12 is inserted into the main body 11 and serves as a flow path when the suction material L of the liquid stored in the surgical field (suction site S) is sucked. The suction material L is sucked from the suction port 12a at the tip of the suction pipe 12, passes through the through hole 15a of the connecting portion 15 from the discharge port 12b at the rear end of the suction pipe 12, and is sent to the suction device via the hose 16. Be done. The suction tube 12 is preferably a metal tube in order to safely and reliably send the suction material L to the suction device. Further, the suction pipe 12 can reduce the risk of liquid leakage and air leakage by adopting an integrated pipe structure from the tip (suction port 12a) in contact with the suction portion S to the rear end of the connecting portion 15.

The light guide member 13 is a tubular member made of a transparent or translucent material. The material of the light guide member 13 is preferably made of resin. As the resin having such translucency, either a thermoplastic resin or a thermosetting resin can be used, and for example, acrylic resin, vinyl resin, polycarbonate resin, polyester resin, polyether resin, urethane resin, epoxy resin and the like can be used. Can be mentioned. The light guide member 13 can be integrally formed with the suction tube 12 by inserting the suction tube 12 into a mold. Further, the light guide member 13 may be formed separately from the suction tube 12, and the suction tube 12 may be inserted into the tube of the light guide member 13 and assembled.

The suction tube 12 passes through the inside of the tube of the light guide member 13. The tip of the suction tube 12 projects from the tip of the light guide member 13. This protrusion amount can be appropriately set, but can be, for example, about 3 to 10 mm. Therefore, in order to suck the suction material L with the suction pipe 12, even when the tip portion of the suction pipe 12 is immersed in the suction material L, the tip of the light guide member 13 is difficult to be immersed in the suction material L. , The suction site S can be efficiently illuminated.
Further, a hole 12c that penetrates the inside of the suction pipe 12 is provided on the side surface of the tip portion of the suction pipe 12. As a result, even if the suction port 12a of the suction tube 12 comes into contact with the tissue T and is blocked, or if other foreign matter is clogged inside the suction port 12a or the suction tube 12, the tissue T or the foreign matter is strongly sucked into the suction port 12a. It is possible to suppress sticking. In order to suppress such suction, it is also possible to adopt a method of controlling the suction force by opening and closing a hole formed in the side surface of the suction tube with a user's finger, as in the existing suction device.

Further, the light guide member 13 has an uneven portion at the tip of its peripheral surface. The uneven portion may be, for example, a scratch or the like made by physically roughening the tip of the light guide member 13. As described above, since the uneven portion is provided at the tip of the peripheral surface of the light guide member 13, the light guide member 13 is more flat and straight than the peripheral surface of the light guide member 13. It is possible to increase the amount of light emitted from the tip of the peripheral surface of the. This is because the convex portion at the tip of the light guide member 13 (spherical portion 131 in the example shown in FIG. 4) emits light traveling in the light guide member 13 along the tube axis direction of the suction tube 12. This is because it plays a role of reflecting the inner surface in the radial direction orthogonal to the axial direction of the tube and emitting the light in the radial direction from the peripheral surface.

If there is no uneven portion at the tip of the light guide member 13, most of the light is emitted from the tip of the light guide member 13, and as shown in FIG. 1, when the suction material L is sucked, the suction tube 12 When the suction port 12a is brought close to the tissue T in the body, the light emitted from the tip of the light guide member 13 is stopped by the tissue T and cannot be effectively used. However, in the suction device 1 of the present embodiment, since the tip of the peripheral surface of the light guide member 13 has an uneven portion, light can be emitted in the radial direction from the tip of the peripheral surface, as shown in FIG. In addition, even if the suction port 12a of the suction tube 12 is brought close to the tissue T in the body when the suction object L is sucked, the periphery of the tissue T can be lit up well.

As an example of the specific shape of the uneven portion, as shown in FIGS. 1, 2 and 4, there is a structure having a plurality of spherical portions 131 provided at the tip end portion of the light guide member 13. A gentle groove 132 extending in the circumferential direction is formed between the spherical portions 131 and on the side of the spherical portion 131 far from the tip of the light guide member 131. The groove portion 132 is a recessed portion as compared with the spherical portion 131, and the spherical portion 131 and the groove portion 132 form the uneven portion of the present embodiment (shape example 1). The size and number of the spherical portions 131 are not particularly limited, but the spherical portion 131 has a constricted portion rather than the diameter of the light guide member 13 at a portion farther from the tip than the uneven portion, such as the groove portion 132 of the shape example 1. Is desirable.

The shape of the uneven portion is not limited to the above-mentioned shape, and for example, as shown in FIG. 5A, a structure having a plurality of groove portions 231 extending in the circumferential direction at the tip end portion of the peripheral surface of the light guide member 13. It may be. The flat portion 232 between the groove portions 231 is a portion that protrudes as compared with the groove portion 231, and the groove portion 231 and the flat portion 232 form an uneven portion (shape example 2). The width and number of the groove portions 231 are not particularly limited, but it is preferable that the number of the groove portions 231 is large because more light is emitted in the radial direction from the uneven portion of the tip portion of the light guide member 13.

Further, the shape of the uneven portion has, for example, as shown in FIG. 5B, a structure having a recessed portion 331 formed by combining a plurality of tapered shapes extending in the circumferential direction at the tip end portion of the peripheral surface of the light guide member 13. It may be. The flat portion 332 between the recessed portions 331 is a portion that protrudes as compared with the recessed portion 331, and these recessed portions 331 and the flat portion 332 form an uneven portion (shape example 3). The width, shape, and number of the recesses 331 are not particularly limited, but it is preferable that the number of recesses 331 is large because more light is emitted in the radial direction from the uneven portion of the tip of the light guide member 13.

Further, the shape of the uneven portion may be, for example, as shown in FIG. 5C, having a structure having a plurality of hemispherical convex portions 431 at the tip of the peripheral surface of the light guide member 13. The flat portion 432 on which each convex portion 431 is formed is a recessed portion as compared with the convex portion 431, and the convex portion 431 and the flat portion 432 form a concave-convex portion (shape example 4). The size, arrangement, and number of the convex portions 431 are not particularly limited, but it is better that the number of the convex portions 431 is large and the convex portions 432 are densely formed from the uneven portion at the tip of the light guide member 13. This is preferable because the amount of light emitted in the radial direction increases.

From the viewpoint of increasing the amount of light emitted in the radial direction from the tip of the light guide member 13 and giving it a gentle shape so as not to damage the body tissue T, among the above-mentioned shape examples 1 to 4 , Shape example 1 is particularly suitable.

Further, all of Shape Examples 1 to 4 can be easily manufactured only by injection molding of resin.

The light emitting unit 14 is installed in the main body portion 11 and irradiates the light guide member 13 with light parallel to the tube axis direction of the suction tube 12. As shown in FIG. 2, the light emitting unit 14 includes, for example, an LED (light emitting diode) 141, a substrate 142, a dry battery 143, wiring 144, and a switch 145.

As shown in FIG. 3, the LED 141 is installed on the substrate 142 fixed to the inner side surface of the main body 11. A through hole 142a through which the suction tube 12 is inserted is provided in the center of the substrate 142. For example, three LEDs 141 are evenly arranged around the through hole 142a. The number of LEDs 141 is not particularly limited as long as an illuminance that clearly illuminates the surgical field can be obtained, and may be one or two or more. Further, the arrangement of the LEDs 141 is usually evenly arranged so as to be point-symmetric with respect to the through hole 142a, but the arrangement is not limited to such an arrangement, and if an illuminance that clearly illuminates the surgical field is obtained, the LED 141 penetrates. An uneven arrangement that is asymmetric with respect to the hole 142a may be used.

In this embodiment, the LED 141 is activated by the dry battery 143. For example, as shown in FIG. 2, the positive electrode of the dry cell 143 is connected to the switch 145 via the positive electrode terminal 146 and the wiring 144, and the negative electrode of the dry battery 143 is connected to the LED 141 via the negative electrode terminal 147, the wiring 144, and the substrate 142. Connected to. Further, the substrate 142 and the switch 145 are connected by wiring 144, and a circuit is formed by these LEDs 141, the substrate 142, the dry battery 143, the wiring 144, the switch 145, the positive electrode terminal 146, and the negative electrode terminal 147. It is configured.

As described above, the switch 145 is installed so that the end surface Fs of the switch 145 is located on the front end side of the rear end surface Fb of the main body 11. Therefore, the switch 145 is in a position where it is unlikely to be unnecessarily pushed by the user of the suction device 1 holding the main body 11. Therefore, it is possible to prevent the user from accidentally pressing the switch 145 while sucking the suction material L from the suction site S. Further, the tip of the switch 145 is prevented so that the switch 145 according to the present embodiment does not return to the original position (OFF position) by pressing the switch 145 again from the pressed state (ON position). The switch 145 may be pulled out to the rear end side to return it to the OFF position.

Although the embodiment of the present invention has been described above, the present invention is not limited to the above-described embodiment and can be appropriately modified and implemented.

In the above embodiment, the light guide member has a concave-convex portion at the tip of the peripheral surface of the light guide member, but the uneven portion may not be provided. Further, instead of the uneven portion, or in addition to the uneven portion, for example, a turbid translucent resin that easily scatters light may be used at the tip portion of the light guide member. Further, it is also possible to scatter light at the tip portion by mixing a large number of bubbles into the tip portion of the light guide member.

In the above embodiment, the switch 145 is a push button type switch, but it may be a slide type switch.

In the above embodiment, the light emitting unit 14 irradiates the light with the LED 141, but for example, the rear end portion of the light guide member 13 may be irradiated with the light guided by using an optical fiber or the like.

In the above embodiment, a dry battery is used as a power source for the LED 141, but the battery is not limited to a primary battery such as a dry battery, and a secondary battery or a fuel cell may be used. In addition to the battery, a constant current power source or a constant voltage power source normally used as a power source for the LED may be used, or power may be supplied to the LED by wireless radio waves.

As shown in the above-described embodiment, by providing the uneven portion at the tip of the peripheral surface of the light guide member 13, the light is irradiated from the light emitting portion 14 and the light is emitted from the tip of the light guide member 13 in the radial direction. The following measurements were performed to confirm the effect.

As an embodiment, a suction device 1 having a structure in which the uneven portion shown in FIGS. 1, 2 and 4 has a spherical portion 131 is used, and as a comparative example, although not shown, the tip of the peripheral surface of the light guide member 13 is used. The illuminance of the light emitted from the light emitting portion 14 was compared using a straight tip having no uneven portion in the portion.

The measuring method is as follows. That is, as the power source for the LED, one AAA alkaline battery manufactured by Panasonic was used, and as the LED, three white LEDs having a diameter of 5 mm were arranged and used as shown in FIG. Further, the suction device 1 is installed so that the height of the central axis of the light guide member 13 from the installation surface is 20 mm, and the illuminometer is installed 10 mm laterally from the position of the central axis of the light guide member 13. did. Further, a DIGITAL LUX METER (LX-1010B) was used as an illuminance meter, the illuminance meter range was set to 2000, and the illuminance was measured in an environment of a temperature of 22 ° C. and a humidity of 60%. When measuring the illuminance, it was confirmed in advance that the measured value of the illuminance when the LED power was off was 0.

As described above, when the illuminance on the side of the tip of the light guide member 13 in the suction device of the example and the comparative example was measured, the illuminance of the suction device of the comparative example was 319 LUX, whereas that of the example The illuminance of the aspirator 1 was 638 LUX. In this way, by providing the uneven portion (spherical portion 131 in this embodiment) at the tip of the peripheral surface of the light guide member 13, the light emitted in the radial direction from the tip of the light guide member 13 increases. I found out.

1 Medical suction device 11 Main body 12 Suction tube 13 Light guide member 14 Light emitting part 141 LED
L suction material T tissue

Claims (6)

Hollow body and
A suction tube for sucking the liquid stored in the surgical field through the main body,
A tubular light guide member through which the suction tube exposed from the main body passes through,
A light emitting unit installed in the main body and irradiating the light guide member with light,
A medical aspirator characterized by being equipped with. The medical suction device according to claim 1, wherein the light guide member has an uneven portion at a tip end portion of a peripheral surface. The medical suction device according to claim 2, wherein the uneven portion has a structure having a plurality of spherical portions at the tip end portions of the peripheral surface of the light guide member. The medical suction device according to claim 2, wherein the uneven portion has a structure having a plurality of grooves at the tip of the peripheral surface of the light guide member. The medical suction device according to claim 2, wherein the uneven portion has a structure having a plurality of recessed portions at the tip end portion of the peripheral surface of the light guide member. The medical suction device according to claim 2, wherein the uneven portion has a structure having a plurality of hemispherical convex portions at the tip end portion of the peripheral surface of the light guide member.

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