JP2014190280A - Liquid injection device, and medical equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a technology relating to a liquid injection device injecting a liquid.SOLUTION: A liquid injection device injecting a liquid, includes an injection pipe for injecting the liquid, a liquid supply flow channel for supplying the liquid, a pulsation generating portion applying pulsation to the liquid supplied from the liquid supply flow channel to supply the same to the injection pipe, a container accommodating at least a part of the injection pipe, at least a part of the liquid supply flow channel, and the pulsation generating portion, and including the injection pipe at a first end portion, and a plurality of linear members including the liquid supply flow channel at a second end portion, and a vertical regulating portion for regulating a vertical direction of the container. At the second end portion of the container, a first linear member among the plurality of linear members, is disposed above a second linear member with respect to the vertical direction, and a weight of the first linear member is less than that of the second linear member.

Description

  The present invention relates to a liquid ejecting apparatus that ejects liquid, and a medical device technology using the liquid ejecting apparatus.

  As a technique related to a liquid ejecting apparatus that ejects a liquid, for example, a technique disclosed in Patent Document 1 below is known. Patent Document 1 describes a liquid ejecting apparatus that converts a liquid into a pulsating flow using an actuator having a piezoelectric element (pulsation generating unit) and ejects the liquid in a pulse form from an ejection port.

JP 2008-82202 A

  In the liquid ejecting apparatus described in Patent Literature 1, an actuator is accommodated in a container that is held by a user. A linear member such as a signal cable that transmits a drive signal to the piezoelectric element and a liquid supply channel that supplies liquid is drawn out from the container. Conventionally, sufficient arrangement has not been made for the arrangement of these linear members drawn from the container. For example, depending on the arrangement of these linear members, a problem has been pointed out that a downward load is greatly applied to the rear end side of the container, and the user cannot use the liquid ejecting apparatus for a long time. In addition, the conventional liquid ejecting apparatus has been desired to be downsized, reduced in cost, resource-saving, and easy to manufacture. Such a problem is not limited to the liquid ejecting apparatus that accommodates the actuator in the container, but is a problem common to the liquid ejecting apparatus in which the linear member is drawn from the container.

  SUMMARY An advantage of some aspects of the invention is to solve at least a part of the problems described above, and the invention can be implemented as the following forms.

(1) According to an aspect of the present invention, a liquid ejecting apparatus that ejects liquid is provided. The liquid ejecting apparatus includes: an ejection pipe that ejects liquid; a liquid supply passage that supplies the liquid; a pulsation generator that applies pulsation to the liquid supplied from the liquid supply passage and supplies the pulsation to the ejection pipe And at least a part of the ejection pipe, at least a part of the liquid supply flow path, and the pulsation generating part, and the ejection pipe is provided at the first end part, and at the second end part. A container including a plurality of linear members including the liquid supply flow path; a vertical direction defining part that defines a vertical direction of the container; and a plurality of the plurality of linear members at a second end of the container. Of the linear members, the first linear member is disposed above the second linear member with respect to the vertical direction; the first linear member is lighter than the second linear member. According to the liquid ejecting apparatus of this aspect, the first linear member is disposed above the second linear member at the second end of the container, and the first linear member is the second linear member. Since it is lighter than the linear member, the first linear member is heavier than the second linear member, so the downward load acting on the second end of the container is small and the usability is improved. Can be made.

  The vertical direction defining portion may define the vertical direction as the usage direction of the container when the user uses the liquid ejecting apparatus, and the function and characteristics of the liquid ejecting apparatus vary depending on the direction of the container. When doing so, you may prescribe | regulate the up-down direction of a container on the basis of the direction of the container in which a function and a characteristic are exhibited suitably. The vertical direction defining unit includes a unit that gives information defining the vertical direction of the container to the user through at least one of the five senses such as the sight, touch, and hearing of the user of the liquid ejecting apparatus. The vertical direction defining part uses the vertical direction of the container when used from various elements such as the shape, pattern, color, line drawing, characters, marks, sound, light, operability, design etc. It includes things that attract people.

(2) In the liquid ejecting apparatus, the first linear member may be harder than the second linear member. According to the liquid ejecting apparatus of this aspect, compared to the case where the second linear member is harder than the first linear member, the downward load is reduced on the second end portion of the container, and the usability is further improved. Can be improved.

(3) In the liquid ejecting apparatus according to the above aspect, the first linear member is the liquid supply flow path; and the second linear member includes a signal cable that transmits a drive signal to the pulsation generation unit. It is good. According to the liquid ejecting apparatus of this aspect, the liquid supply flow path can be applied as the first linear member, and the signal cable can be applied as the second linear member.

(4) In the liquid ejecting apparatus according to the above aspect, one of the plurality of linear members communicates in the container from the first end to the second end, and the liquid around the ejection port The suction channel is heavier and softer than the liquid supply channel and lighter and stiffer than the signal cable; the second end of the container has the vertical direction As a reference, the liquid supply channel, the suction channel, and the signal cable may be arranged in this order from the top. According to the liquid ejecting apparatus of this aspect, it can be applied to a liquid ejecting apparatus including a liquid supply channel, a suction channel, and a signal cable.

(5) A medical device using the liquid ejecting apparatus according to the above aspect. According to this form of medical device, a user-friendly medical device can be provided.

  A plurality of constituent elements of each aspect of the present invention described above are not indispensable, and some or all of the effects described in the present specification are to be solved to solve part or all of the above-described problems. In order to achieve the above, it is possible to appropriately change, delete, replace with another new component, and partially delete the limited contents of some of the plurality of components. In order to solve part or all of the above-described problems or to achieve part or all of the effects described in this specification, technical features included in one embodiment of the present invention described above. A part or all of the technical features included in the other aspects of the present invention described above may be combined to form an independent form of the present invention.

  For example, one aspect of the present invention can be realized as an apparatus including one or more elements among the five elements of the injection tube, the flow path, the pulsation generating unit, the container, and the vertical direction defining unit. It is. That is, this apparatus may or may not have the injection pipe. The device may or may not have a flow path. Further, the device may or may not have a pulsation generating unit. Moreover, the apparatus may or may not have a container. Moreover, the apparatus may or may not have the vertical direction defining portion. The ejection tube may be configured as an ejection tube that ejects liquid, for example. For example, the flow path may be configured as a liquid supply flow path for supplying the liquid to the ejection pipe. The pulsation generating unit may be configured as, for example, a pulsation generating unit that applies pulsation to the liquid supplied from the liquid supply channel and supplies the pulsation to the ejection pipe. The container accommodates, for example, at least a part of the ejection pipe, at least a part of the liquid supply flow path, and the pulsation generator, and includes the ejection pipe at the first end, and the second end. The container may be provided with a plurality of linear members including liquid supply channels. For example, the vertical direction defining portion may be configured as a vertical direction defining portion that is provided in the container and defines the vertical direction of the container. Such an apparatus can be realized as, for example, a liquid ejecting apparatus, but can also be realized as an apparatus other than the liquid ejecting apparatus. According to such a form, it is possible to solve at least one of various problems such as downsizing of the apparatus, cost reduction, resource saving, easy manufacture, and improvement in usability. Any or all of the technical features of each form of the liquid ejecting apparatus described above can be applied to this apparatus.

  The present invention can be realized in various forms other than the apparatus. For example, it is realizable with forms, such as a method of injecting a liquid, and a manufacturing method of a liquid injection device.

It is explanatory drawing explaining the structure of a liquid ejecting apparatus. It is explanatory drawing explaining the internal structure of a handpiece. It is explanatory drawing which shows a handpiece provided with a grip. It is explanatory drawing which shows the handpiece which formed the curved part in the injection pipe.

A. First embodiment:
FIG. 1 is an explanatory diagram illustrating the configuration of a liquid ejecting apparatus 10 as a first embodiment of the invention. The liquid ejecting apparatus 10 according to this embodiment is a medical device used in a medical institution, and has a function as a scalpel that performs incision or excision of an affected part by ejecting liquid onto the affected part.

  The liquid ejecting apparatus 10 includes a handpiece 20 as a container, a liquid supply unit 50, a suction device 60, a control unit 70, and a liquid container 80. The liquid supply unit 50 and the liquid container 80 are connected by a connection tube 51. The liquid supply unit 50 and the handpiece 20 are connected by a liquid supply channel 52. In the present embodiment, the connection tube 51 and the liquid supply flow path 52 are formed of resin.

  The liquid container 80 contains physiological saline as a liquid. The liquid supply unit 50 supplies the liquid sucked from the liquid container 80 via the connection tube 51 to the handpiece 20 via the liquid supply channel 52. In this embodiment, physiological saline is used as the liquid. However, the present invention is not limited to this, and various liquids such as sterile water and ultrapure water can be used.

  The handpiece 20 is an instrument that is held and operated by a user of the liquid ejecting apparatus 10. The handpiece 20 includes a pulsation generator 30, an injection pipe 55, and an injection port 58. The liquid supplied to the handpiece 20 from the liquid supply unit 50 via the liquid supply channel 52 is given a pulsation with a predetermined frequency by the pulsation generation unit 30 and is supplied to the ejection pipe 55. The liquid supplied to the ejection pipe 55 is ejected from the ejection port 58 as a pulsed liquid. The user performs incision or excision of the affected part by applying a pulsed liquid ejected from the ejection port 58 to the affected part of the patient. In the present embodiment, the injection pipe 55 is made of stainless steel. However, the injection tube 55 may be formed of a material having a predetermined rigidity or higher, such as another metal such as brass or a reinforced plastic.

  The control unit 70 transmits a drive signal to the pulsation generation unit 30 via the signal cable 72 and controls the liquid supply unit 50 via the control cable 71, whereby the flow rate of the liquid supplied to the pulsation generation unit 30. Control. A foot switch 75 that is operated by the user with his / her foot is connected to the control unit 70. When the user turns on the foot switch 75, the control unit 70 controls the liquid supply unit 50 to cause the pulsation generation unit 30 to supply the liquid and transmit a drive signal to the pulsation generation unit 30. A pulsation is imparted to the liquid supplied to the pulsation generator 30, and a pulsed liquid is ejected from the ejection port 58. In addition, ejecting the liquid in a pulse form means that the liquid is ejected in a state where the flow rate or flow velocity of the ejected liquid is fluctuated. The mode in which the liquid is ejected in a pulsed manner includes intermittent ejection in which the liquid is ejected and stopped repeatedly. However, since the flow rate or flow rate of the liquid only needs to be changed, it is not necessarily intermittent ejection. There is no.

  The suction device 60 is a device that sucks liquid and excision around the ejection port 58. The suction device 60 and the handpiece 20 are connected by a suction flow path 62. The suction channel 62 extends through the handpiece 20 to the vicinity of the tip of the ejection pipe 55. The ejection tube 55 passes through the inside of the suction flow path 62. As shown in the direction of arrow A in FIG. 1, the liquid sucked from the suction port 64, which is the tip of the suction channel 62, flows between the outer wall of the ejection pipe 55 and the inner wall of the suction channel 62. A channel (hereinafter also referred to as a gap channel) is formed. The liquid that has flowed into the gap channel from the suction port 64 is sucked into the suction device 60 through the suction channel 62.

  FIG. 2 is an explanatory diagram for explaining the internal structure of the handpiece 20. As described above, the pulsation generator 30 is housed inside the handpiece 20. As shown in the lower part of the figure, the pulsation generating unit 30 includes a first case 31, a second case 32, a third case 33, a bolt 34, a piezoelectric element 35, a reinforcing plate 36, a diaphragm 37, a packing 38, and an inlet channel. 40, an outlet channel 41 is provided. The first case 31 and the second case 32 are joined to face each other. The first case 31 is a cylindrical member. One end of the first case 31 is sealed by fixing the third case 33 with a bolt 34. A piezoelectric element 35 is disposed in a space formed inside the first case 31.

  The piezoelectric element 35 is a stacked piezoelectric element. One end of the piezoelectric element 35 is fixed to a diaphragm 37 via a reinforcing plate 36. The other end of the piezoelectric element 35 is fixed to the third case 33. The diaphragm 37 is made of a metal thin film, and its peripheral edge is fixed to the first case 31. A liquid chamber 39 is formed between the diaphragm 37 and the second case 32. The volume of the liquid chamber 39 is changed by driving the piezoelectric element 35.

  The second case 32 is formed with an inlet channel 40 through which liquid flows and an outlet channel 41 through which liquid flows out. The inlet channel 40 extends from a position deviated from the center of the end surface of the second case 32, is bent in a U shape in the upward direction in the drawing, and extends toward the rear end portion 22 of the handpiece 20. By bending the inlet channel 40 in this way, the curvature of the U-shaped portion of the inlet channel 40 can be reduced. Further, the combined width of the inlet flow path 40 extending toward the rear end portion 22 and the pulsation generating section 30 can be reduced, and as a result, the handpiece 20 that accommodates the pulsation generating section 30 and the inlet flow path 40. Can be made thinner. Furthermore, the center of gravity of the handpiece 20 can be positioned on the distal end portion 24 side by extending the inlet channel 40 from the distal end portion 24 side of the pulsation generating portion 30.

  A liquid supply channel 52 is connected to the inlet channel 40. An ejection pipe 55 is connected to the outlet channel 41 via a connection tube 54. The liquid supplied from the liquid supply unit 50 is supplied to the liquid chamber 39 via the liquid supply channel 52. When the piezoelectric element 35 vibrates at a predetermined frequency, the volume of the liquid chamber 39 changes via the diaphragm 37, and the contained liquid is pressurized. The pressurized liquid is discharged from the ejection port 58 through the outlet channel 41, the connection tube 54, and the ejection pipe 55.

  The suction channel 62 communicates from the rear end 22 to the front end 24 of the handpiece 20. Inside the handpiece 20, the suction channel 62 inserts the connection tube 54 and the injection tube 55. The suction channel 62 is pulled out from the distal end portion 24 of the handpiece 20 together with the ejection pipe 55. The suction force by which the suction channel 62 sucks liquid or the like from the suction port 64 can be adjusted by the suction device 60 and can be adjusted by the user operating the suction force adjustment mechanism 65 provided in the handpiece 20. It is.

  The suction force adjustment mechanism 65 includes an operation unit 66 and a hole 67. The hole 67 communicates the suction channel 62 and the operation unit 66. The user opens and closes the hole 67 with his / her finger when holding the handpiece 20. The amount of air flowing into the suction channel 62 from the outside through the hole 67 can be adjusted by the opening / closing amount of the hole 67 by the user's finger. As a result, the suction force of the suction channel 62 Can be adjusted. When the suction force adjustment mechanism 65 is directed upward with respect to gravity, the suction object does not invade from the hole 67 to the outside, so that the function is suitably exhibited. Accordingly, the suction force adjusting mechanism 65 has a function of suggesting the user the up and down direction in which the handpiece 20 is gripped. If the suction force adjusting mechanism 65 is held upward with respect to gravity, the position of each component of the liquid ejecting apparatus 10 is determined so that the function of the suction force adjusting mechanism 65 and the operability of the user are suitable. However, the suction force adjusting mechanism 65 does not necessarily force the user to use the handpiece 20 while facing upward. Hereinafter, in the handpiece 20, the direction in which the suction force adjusting mechanism 65 is installed will be described as the upward direction.

  The signal cable 72 is inserted from the rear end portion 22 of the handpiece 20. Two electrode wires 74 made up of plus and minus inserted in the signal cable 72 are connected to the piezoelectric element 35 in the pulsation generator 30. The drive signal transmitted from the control unit 70 is transmitted to the piezoelectric element 35 via the electrode line 74 in the signal cable 72. The piezoelectric element 35 expands and contracts based on the drive signal.

  Here, the arrangement relationship of the three linear members including the liquid supply channel 52 drawn from the rear end portion 22 of the handpiece 20, the suction channel 62, and the signal cable 72 will be described. In the present embodiment, lighter linear members are arranged in order from the upper direction at the rear end portion 22 of the handpiece 20. Moreover, a hard linear member is arranged in order from the upper direction at the rear end portion 22 of the handpiece 20. Between the weight (weight) and the hardness (hardness) of the linear member, the weight of the linear member is preferentially arranged. In the present embodiment, the weight is defined as the mass per unit length of the linear member. Therefore, the larger the mass per unit length of the linear member, the heavier, the smaller the lighter, the lighter. The hardness is defined as a curvature when a force is applied to both ends of a linear member having a unit length.

  In this embodiment, the liquid supply flow path 52 is the lightest, the suction flow path 62 is next light, and the signal cable 72 is the heaviest. Further, the liquid supply channel 52 is the hardest, the suction channel 62 is next hard, and the signal cable 72 is the softest. Accordingly, the three linear members are arranged from the top in the order of the liquid supply channel 52, the suction channel 62, and the signal cable 72, and are pulled out from the rear end portion 22 of the handpiece 20. When the linear member is arranged in this manner at the rear end portion 22 of the handpiece 20, the signal cable 72 is soft as shown in FIG. 1, and therefore, after being pulled out from the rear end portion 22, Droops in the vicinity. Since the suction channel 62 is harder than the signal cable 72, the suction channel 62 hangs behind the signal cable 72. The liquid supply channel 52 hangs behind the suction channel 62.

  With the upper direction as a reference, the user grips the handpiece 20 in the case where the lighter linear member is arranged in the rear end portion 22 in comparison with the case where the heavier linear member is arranged in the rear end portion 22 sequentially. Experiments revealed that the downward load applied to the rear end portion 22 was small. In addition, when the weight of the linear member is prioritized and arranged at the rear end portion 22 in order from the hard linear member, it is used in comparison with the case where it is arranged at the rear end portion 22 in order from the soft linear member. Experiments revealed that the downward load applied to the rear end 22 when the person grips the handpiece 20 is even smaller.

  Further, even in the case of the handpiece 20 in which the liquid supply flow path 52 and the signal cable 72 are drawn out at the rear end portion 22 of the handpiece 20 without the suction flow path 62, the liquid supply flow path 52 is disposed on the upper side. When the signal cable 72 is disposed below, the downward load applied to the rear end portion 22 when the user grips the handpiece 20 is small compared to the case of the reverse arrangement. It became clear.

  As described above, since the liquid ejecting apparatus 10 arranges the light linear members in order from the top in the rear end portion 22 of the handpiece 20, the case where the heavy linear members are arranged in order from the top and In comparison, the downward load acting on the rear end portion 22 of the handpiece 20 is reduced. As a result, the injection port 58 can be easily brought close to the affected part, and the user-friendliness can be improved. Moreover, since the liquid ejecting apparatus 10 arranges the hard linear members in order from the top in the rear end portion 22 of the handpiece 20, as compared with the case where the soft linear members are arranged in order from the top, A downward load acting on the rear end portion 22 of the handpiece 20 is reduced. Therefore, the convenience of the user can be further improved.

  As shown in FIG. 1, since the signal cable 72 is soft, the signal cable 72 hangs down in the vicinity of the rear end portion 22 after being pulled out from the rear end portion 22. Since the suction channel 62 is harder than the signal cable 72, the suction channel 62 hangs behind the signal cable 72. The liquid supply channel 52 hangs behind the suction channel 62. Thus, by arranging the hard linear members in order from the top, the linear members can be prevented from intermingling with each other in the vicinity of the rear end portion 22 of the handpiece 20 without interfering with each other. As a result, the user convenience can be further improved.

  As a correspondence relationship between the embodiment and the claims, the handpiece 20 corresponds to the container described in the claims, and the suction force adjusting mechanism 65 corresponds to the vertical direction defining portion described in the claims. Correspond.

B. Variations:
The present invention is not limited to the above-described embodiments and embodiments, and can be implemented in various modes without departing from the gist thereof. For example, the following modifications are possible.
(B1) Modification 1:
In the above embodiment, the suction force adjusting mechanism 65 is adopted as the vertical direction defining portion, but various configurations may be adopted without being limited thereto. FIG. 3 is an explanatory view showing a handpiece 20a having a grip 68 as a vertical direction defining portion. The handpiece 20 a defines the vertical direction by the shape of the grip 68. FIG. 3 shows a liquid ejecting apparatus 10 a that does not include the suction device 60 and the suction flow path 62. In this case, at the rear end portion 22a of the handpiece 20a, the liquid supply flow path 52a and the signal cable 72a are arranged in order from the top. The liquid supply channel 52a is lighter and harder than the signal cable 72a. Also in the liquid ejecting apparatus 10a, as in the above embodiment, when the user grips along the vertical direction defined by the grip 68, the load applied to the rear end portion 22a of the handpiece 20a is reduced, and the usability is improved. Can be improved.

  FIG. 4 is an explanatory diagram showing a handpiece 20b in which a curved portion 69 is formed in the injection pipe 55b as the vertical direction defining portion. The liquid ejecting apparatus 10 b defines the vertical direction of the handpiece 20 b by the shape of the curved portion 69.

  In addition, the vertical direction may be defined by line drawing such as arrows and characters indicating the vertical direction of the handpiece 20. The shape of the hand piece 20 may be a columnar shape having an oval cross section, and the vertical direction of the hand piece 20 may be defined by pulling out the injection tube 55 from the upper side of the oval center at the distal end portion 24 of the hand piece 20. . By providing the handpiece 20 with an inclination sensor or a level, the user may be notified of a predetermined vertical direction. The direction of the handpiece 20 may be read by a sensor provided outside the handpiece 20 to notify the user of the vertical direction.

  The vertical direction defining unit may define the vertical direction of the handpiece as a function of the handpiece alone, or may be provided separately from the handpiece as a function of the device included in the liquid ejecting apparatus. The vertical direction may be defined, or the vertical direction of the handpiece may be defined in cooperation with an apparatus different from the liquid ejecting apparatus 10.

  The suction force adjustment mechanism 65 according to the first embodiment defines the vertical direction of the handpiece 20 as a direction in which the user's operability and the suction force adjustment mechanism 65 suitably function. The grip 68 shown in FIG. 3 defines the vertical direction of the handpiece 20 based on the sense of touch of the user. The curved portion 69 shown in FIG. 4 defines the vertical direction of the handpiece 20 based on the visual difference in use. As described above, the vertical direction defining portion may define the vertical direction as the usage direction of the container when the user uses the liquid ejecting apparatus, and the function of the liquid ejecting apparatus may be determined depending on the direction of the container. -When a characteristic changes, you may prescribe | regulate the up-down direction of a container on the basis of the direction of the container in which a function and a characteristic are exhibited suitably. The vertical direction defining unit includes a unit that gives information defining the vertical direction of the container to the user through at least one of the five senses such as the sight, touch, and hearing of the user of the liquid ejecting apparatus. The vertical direction defining part uses the vertical direction of the container when used from various elements such as the shape, pattern, color, line drawing, characters, marks, sound, light, operability, design etc. It includes things that attract people. Further, the vertical direction defining unit may suppress use in a direction other than the vertical direction defined by the user in advance by various elements included in the liquid ejecting apparatus.

(B2) Modification 2:
The arrangement of the plurality of linear members at the rear end portion 22 of the handpiece 20 may be arranged so as to be lighter linear members in order from the top in the relationship between two of the plurality of linear members. In addition, in the relationship between two of the plurality of linear members, the linear members may be arranged in order from the top.

(B3) Modification 3:
In the embodiment, the liquid ejecting apparatus 10 is used as a medical device. However, the liquid ejecting apparatus 10 may be used as a device other than the medical device. For example, the liquid ejecting apparatus 10 may be used as a cleaning apparatus that removes dirt on an object by applying the ejected liquid to the object, or a drawing apparatus that draws characters, pictures, or the like with the ejected liquid. Even in such an aspect, the same effect as in the above embodiment can be obtained.

(B4) Modification 4:
In the above embodiment, physiological saline is used as the liquid. However, the present invention is not limited to this, and various liquids such as sterile water and ultrapure water can be used.

(B5) Modification 5:
In the above-described embodiment, the hardness of the linear member is defined as a curvature when a force is applied to both ends of the linear member having a unit length. May be defined as the curvature when bent by its own weight.

DESCRIPTION OF SYMBOLS 10,10a, 10b ... Liquid injection apparatus 20,20a, 20b ... Hand piece 22,22a ... Rear end part 24 ... Tip part 30 ... Pulsation generating part 31 ... First case 32 ... Second case 33 ... Third case 34 ... Bolt 35 ... Piezoelectric element 36 ... Reinforcing plate 37 ... Diaphragm 38 ... Packing 39 ... Liquid chamber 40 ... Inlet channel 41 ... Outlet channel 50 ... Liquid supply part 51 ... Connection tube 52, 52a ... Liquid supply channel 54 ... Connection tube 55, 55b ... injection pipe 58 ... injection port 60 ... suction device 62 ... suction channel 64 ... suction port 65 ... suction force adjusting mechanism 66 ... operation part 67 ... hole 68 ... grip 69 ... curve part 70 ... control part 71 ... Control cable 72, 72a ... Signal cable 74 ... Electrode wire 75 ... Foot switch 80 ... Liquid container

Claims (5)

A liquid ejecting apparatus for ejecting liquid,
An injection tube for injecting liquid;
A liquid supply channel for supplying the liquid;
A pulsation generator that applies pulsation to the liquid supplied from the liquid supply channel and supplies the pulsation to the ejection pipe;
At least a part of the ejection pipe, at least a part of the liquid supply flow path, and the pulsation generator are accommodated, the ejection pipe is provided at a first end, and the liquid is provided at a second end. A container comprising a plurality of linear members including a supply channel;
And a vertical direction defining portion that defines the vertical direction of the container,
In the second end portion of the container, of the plurality of linear members, the first linear member is disposed above the second linear member with respect to the vertical direction,
The first linear member is lighter than the second linear member.   The liquid ejecting apparatus according to claim 1, wherein the first linear member is harder than the second linear member. The liquid ejecting apparatus according to claim 1 or 2,
The first linear member is the liquid supply channel;
The second linear member includes a signal cable that transmits a drive signal to the pulsation generating unit. The liquid ejecting apparatus according to claim 3,
One of the plurality of linear members is a suction channel that communicates the interior of the container from the first end to the second end, and is capable of sucking the liquid around the ejection port. Yes,
The suction channel is heavier and softer than the liquid supply channel, lighter and harder than the signal cable,
The liquid ejecting apparatus, wherein the liquid supply channel, the suction channel, and the signal cable are arranged in this order from the top at the second end of the container with the vertical direction as a reference.   A medical device using the liquid ejecting apparatus according to any one of claims 1 to 4.

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