JP2009213524A - Suction syringe and endoscope apparatus using the suction syringe - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To perform suction of an unlimited suction amount in an easy and consecutive manner, and to provide a simplified and portable device for suction leading to a portable and simplified endoscope apparatus in an endoscope apparatus. <P>SOLUTION: The suction syringe is provided with a tubular body 11 with a suction opening 15 formed on the distal end side, a piston body 12 where a first vent passage 16 is formed, and a pressing operation part 14 where a second vent passage 18 to be opened and closed is formed. A pressing body 20 to be restored by a second spring 21 is provided in the pressing operation part 14, the second vent passage 18 is turned to an open state when the pressing body 20 is pressed, and a first spring 13 for moving the pressed piston body 12 back to the original position is disposed. When the pressing body 20 is pressed, the piston body 12 is moved forward while exhausting air inside the tubular body to the outside through the second vent passage 18 turned to the open state and the first vent passage 16. When the operation of the pressing body 20 is canceled, the second vent passage 18 is turned to a closed state, and fluid is sucked from the suction opening 15 while moving back the piston body 12 by the first spring 13. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a suction syringe capable of sucking a fluid, and a suction syringe of an endoscope apparatus that can be connected to a suction tube in an endoscope to suck a fluid in a body to be observed and can be carried. About.

  FIG. 8 shows a configuration of a conventional endoscope apparatus, and the endoscope (scope) is provided via a distal end portion 1A including an objective optical system, a solid-state imaging device, and the like, and a bending portion, for example. And an operation unit 1B. The operation portion 1B is provided with a forceps port (treatment tool insertion channel introduction port) 3 having a forceps plug, and a treatment tool insertion channel 4 is disposed from the forceps port 3 to the distal end surface of the distal end portion 1A. The treatment instrument insertion channel 4 is connected to a suction tube 5 for sucking fluid (contents) and the like in the observed body, and the treatment instrument insertion channel 4 also functions as a suction tube. Yes.

  In addition, a suction button (mechanical or electrical) 7a, an air / water supply button 7b, a camera shutter button 7c, and the like are arranged in the operation unit 1B. In the case of, for example, a mechanical type, the suction pipe 5 is connected to the liquid storage tank 8 via a pipe connection portion where the suction button 7 a is arranged, and a suction pump 9 is connected to the storage tank 8. Is done.

According to such an endoscope apparatus, when the suction button 7 a is operated, the liquid (contents) of the object to be observed and the like is passed through the treatment instrument insertion channel 4 and the suction tube 5 by the suction operation of the suction pump 9. The liquid or the like can be discharged to the storage tank 8 by suction. The treatment tool can be guided from the forceps port 3 to the distal end portion 1A to perform various treatments in the observed body.
JP 2006-280537 A

  However, when suction is performed in a conventional endoscope apparatus, the suction pump 9 is required as described above, and it is difficult to use the endoscope at a place other than the facility where the suction pump 9 is disposed. There was a problem of being. In order to solve such problems and obtain an endoscope having excellent portability, conventionally, as shown in Patent Document 1, a gas compression cylinder and a nozzle unit are used, and suction force is generated by gas ejection. It has also been proposed to generate. However, even in this case, since the gas compression cylinder and the nozzle unit are used, the apparatus becomes large and the structure is complicated.

  The portability of the endoscope device enables use in various places other than well-equipped facilities, bedside use, emergency use, etc., and simplification of the configuration leads to cost reduction, If the equipment related to suction can be made portable and simplified, an endoscope apparatus with high convenience can be provided.

  In addition, in a syringe that is generally used, suction is performed by manually pulling the piston, but only one-time suction of the volume in the syringe cylinder can be performed, and continuous suction without restriction of the amount is easy. Could not do.

  The present invention has been made in view of the above-described problems, and the object thereof is to lead to the portability and simplification of a suction syringe and an endoscope apparatus that can easily perform continuous suction with no limitation on the suction amount. An object of the present invention is to provide an endoscope apparatus using a suction syringe that can facilitate and simplify the equipment related to suction.

  In order to achieve the above object, a suction syringe according to a first aspect of the present invention reciprocates in close contact with a cylindrical body having a suction port formed on the distal end side and the inner surface of the cylindrical body, and the air in the cylindrical body is discharged. A piston body that forms a first air passage, a first urging member that is disposed between the piston body and the cylindrical body and moves the piston body moved back to the original position; and the piston body The pusher is connected so as to reciprocate and has a pusher that serves as a pusher for the piston body. The pusher is opened when the pusher moves forward, and closed when the pusher moves backward. A push operation part that forms a second air passage through which air in the cylinder from the passage is discharged to the outside, and the push operation part disposed between the push body of the push operation part and the piston body, A second urging member that moves the pusher back to the original position, and the pusher of the push operation unit is pushed. When the piston body is moved forward while exhausting the air in the cylinder to the outside through the opened second air passage and the first air passage, and the pushing operation of the push body is released, The second air passage is closed, and the fluid is sucked from the suction port while the piston body is moved back to the original position by the first biasing member.

An endoscope apparatus using the suction syringe according to the invention of claim 2 is a fluid storage tank that uses the suction syringe of claim 1 as a suction device of the endoscope apparatus and is pipe-connected to the suction port of the endoscope Further, the suction port of the cylindrical body is connected by a pipe.
An endoscope apparatus using the suction syringe according to the invention of claim 3 is the same as the endoscope of claim 1, wherein the suction tube is controlled to be opened and closed by a suction operation unit having a suction tube opening and closing mechanism. As a device, a fluid storage tank is connected to a suction port connected to the suction operation unit, and a suction port of the cylinder is connected to the fluid storage tank so that the suction operation is performed when the piston body moves forward. It is characterized by performing suction by operation of a part.

  According to the configuration of the present invention, when the push body of the push operation unit is pushed with the thumb or the like against the second urging member and the push body is moved forward (first step push operation), 2 When the air passage is opened and then the piston body is pushed by the push body against the first urging member (second-stage pushing operation), the air in the cylinder passes through the first air passage and the second air passage. While being exhausted to the outside, the piston body moves forward and moves to the tip side. Thereafter, when the push operation is released, the push body is moved backward by the second urging member, the second air passage in the push operation portion is closed, and the exhaust from the first air passage and the second air passage is stopped. However, at the same time, the piston body is moved back by the first urging member, and as a result, the outside air is sucked from the suction port. That is, the fluid in the portion where the suction port is disposed can be sucked.

  Further, during the pushing operation, the air in the cylinder is automatically exhausted to the outside, so that it is possible to continuously perform suction regardless of the volume in the cylinder by repeated operations of the pushing operation unit. Become.

Furthermore, in the case of the endoscope apparatus according to claim 2 or 3, since the storage tank is connected to the suction port by a connecting pipe, and the inside of the storage tank is in a decompressed state, the liquid in the observed body can be The treatment instrument insertion channel, the suction tube, and the suction port are used for suction, and this fluid is stored in the storage tank.
According to the third aspect of the present invention, if the piston body is pushed after the suction port is connected to the suction port, the amount of suction required can be appropriately and easily performed by operating the suction button. Become.

According to the suction syringe of the present invention, it is possible to easily perform continuous suction with no limitation on the suction amount by repeating the two-stage pressing operation by the pusher.
In addition, according to the endoscope apparatus using the suction syringe, it is possible to carry and simplify the equipment related to suction, and in turn, to carry and simplify the endoscope apparatus, and various places other than the well-equipped facilities, Use of the endoscope at the bedside or in an emergency is facilitated, and there is an effect that a highly convenient endoscope apparatus can be obtained.

  FIGS. 1 to 3 show a suction syringe according to the embodiment, and FIGS. 4 to 7 show a configuration when the suction syringe of FIGS. 1 to 3 is applied to an endoscope apparatus. In FIG. 1, the suction syringe includes a cylindrical tube body 11, a piston body (slider) 12, a first spring 13, and a push operation unit 14. The cylindrical body 11 is provided with a suction port (hole) 15 at the tip. On the other hand, the piston body 12 is a disc-shaped piston portion (sliding portion) 12a having a predetermined thickness that slides (reciprocates) while being in close contact with the inner surface of the cylindrical body 11, and a cylindrical rod shape that supports the piston portion 12a. The first vent path (pipe) 16 from the front end port 16F to the rear end port 16R of the shaft portion 12b is formed in the central portion in the radial direction of the shaft portion 12b.

In addition, the pushing operation portion 14 is integrally provided at the rear end portion of the shaft portion 12b, and the pushing operation portion 14 is a support disc on the piston body 12 side as shown in FIG. A portion 12c, a small disc portion 12d for forming the second air passage 18, an O-ring 19, a circular crown-shaped pusher 20, and a second spring (spring) 21 are provided. In other words, the O-ring 19 is attached to the step portion formed on the lower side (tip side) of the small disc portion 12d, and as shown in FIGS. 2 (A) and 2 (B), ventilation groove E ₁ for constituting a part of the second ventilation channel 18 is cut formed at a plurality of positions of the outer periphery of the small disc portion 12d (e.g. four places).

The crown-shaped pressing body 20 is a circular dish-like body that forms a circular cavity having a radius slightly smaller than the radius of the small disk portion 12d in the center portion on the lower side (tip side), and a circular opening at the center position thereof. An enclosure 22 having an opening 22 a is provided, and the small disk portion 12 d is disposed in the enclosure 22. Further, as shown in FIGS. 2 (C) and 2 (D), the enclosure 22 has an outer periphery from a circular opening 22a at a plurality of locations (for example, 4 locations) in the circumferential direction on the bottom surface (front end side). ventilation groove E ₂ formed toward the side is provided. And the 2nd spring 21 is arrange | positioned between the crown-shaped pressing body 20 and the said support disc part 12c so that this pressing body 20 may be urged | biased to a rear-end direction.

According to such a configuration of the push operation unit 14, as shown in FIG. 3A, when the push body 20 is released, the push body 20 moves to the rear end side by the urging of the second spring 21. Since the inner surface of the enclosure 22 (the inner surface of the dish-shaped bottom surface portion) is in close contact with the O-ring 19 on the lower side of the small disk portion 12d, the second air passage 18 is closed. On the other hand, as shown in FIG. 3B, when the push body 20 is pushed, the push body 20 moves to the piston body on the tip side, and the inner surface of the enclosure 22 is separated from the O-ring 19. The 2nd ventilation path 18 connected from the ventilation path 16 will be in an open state. In other words, the second air passage 18 includes a space in the enclosure 22 that communicates with the first air passage 16, a ventilation groove E ₁ , a circular opening 22 a, and a ventilation groove E ₂ , and air flows from the ventilation groove E ₂ to the outside. Exhausted.

  Further, the first spring (spring) 13 is disposed between the flange 11a on the rear side of the cylindrical body 11 and the support disk portion 12c of the push operation portion 14 (in a state of being engaged with each other), The pushed piston body 12 can be returned (returned) to the original position.

According to such a suction syringe, when the pushing body 20 (pushing operation part 14) is pushed against the urging force of the second spring 21 with the thumb or the like from the basic (non-operational) state of FIG. As shown in FIG. 3B, the push body 20 moves to the piston body side, so that the inner surface of the enclosure 22 moves away from the O-ring 19 and the space inside the enclosure 22 and the ventilation grooves _{E 1,} a circular opening 22a, a second air passage 18 of the ventilation groove _{E 2} in an open state. Next, when the push body 20 is pushed against the urging force of the first spring 13 (second stage push), the air in the cylinder 11 passes through the first air passage 16 (the front end port 16F and the rear end port 16R). By being discharged to the outside through the second air passage 18, the piston body 12 can be moved forward to the tip side position without exhausting from the suction port 15, and the state shown in FIG. .

  When the operation of the pusher 20 is released in the state of FIG. 1B, the inner surface of the enclosure 22 is in close contact with the O-ring 19 and the second air passage 18 is closed as shown in FIG. 3A. As a result, the air in the cylinder 11 is not discharged to the outside via the first air passage 16, and the outside air is sucked into the cylinder 11 from the suction port 15. Therefore, if the suction port 15 or the distal end of the tube connected to the suction port 15 is arranged in the target fluid, the fluid can be sucked.

  The two-stage pressing operation by the pusher 20 can be repeatedly performed after the suction, and the fluid suction with an unlimited amount can be performed by a plurality of continuous operations.

  4 and 5 show a configuration when the above-described suction syringe is applied to an endoscope apparatus. As shown in FIGS. 4 and 5, the endoscope operation unit 26 includes, for example, a suction port (suction). A suction operation unit 28 having a pipe connection port 27 is provided, and a tank 31 (one connection port) for storing a suction material is connected to the suction port 27 of the suction operation unit 28 via a connection tube 30a. The In addition, the suction port 15 of the suction syringe is connected to the tank 31 (the other connection port) via a connecting tube 30b.

  6 and 7 show the internal configuration of the suction operation unit 28 provided in the endoscope operation unit 26. FIG. The suction operation unit 28 is connected to a pipe line of the suction port 27 and connected to a suction pipe 33 in the endoscope, and a piston member arranged so as to move up and down in the center passage 34. 35, an upper portion of the piston member 35 is provided with a suction button 36 configured by disposing an elastic body (rubber member) that urges the piston member 35 upward, and the piston member 35 includes an upper opening 35a, A passage 35b and a lower opening 35c are formed, and these constitute a suction pipe opening / closing mechanism.

  According to the suction operation section 28, as shown in FIG. 6, the lower opening 35c of the piston member 35 is closed by the central passage 34, and the lowermost portion (outer periphery) of the piston member 35 is the lower portion of the central passage 33 ( As shown in FIG. 7, when the piston member 35 is moved downward by pushing the suction button 36, the lower opening 35c of the piston member 35 and the lowermost part are closed. Is separated from the central passage 34 to open the suction pipe 33.

According to such an endoscope apparatus, when the first stage of the pushing body 20 is pushed with the thumb or the like from the basic state of FIG. 4 in the suction syringe, as shown in FIG. The body 20 moves to the piston body side so that the inner surface of the enclosure 22 is separated from the O-ring 19, and the second ventilation path 18 including the inner space of the enclosure 22, the ventilation groove E ₁ , the circular opening 22 a, and the ventilation groove E ₂ is opened. It becomes. Next, when the second-stage pushing operation of the pusher 20 is performed, the air in the cylinder 11 is discharged to the outside through the first air passage 16 and the second air passage 18, as shown in FIG. The piston body 12 moves to the tip side position, and suction is possible. That is, the inside of the tank 31 is decompressed by the suction force of the suction syringe.

  Then, in the endoscope operation unit 26, when the suction button 36 of the suction operation unit 28 is pressed from the state shown in FIG. 6, the piston member 35 moves downward and the suction tube 33 is opened as shown in FIG. As a result, the suction force by the suction syringe works, and the pressure in the tank 31 is reduced, so that the fluid (contents, etc.) in the observed body is sucked through the treatment instrument insertion channel at the distal end of the endoscope. 33, the central passage 34, the lower opening 35c, the internal passage 35b, and the upper opening 35a, and further sucked through the suction port 27 and the connecting tube 30a and stored in the tank 31.

  Such an operation of the suction operation unit 28 has an advantage that a necessary small amount of suction can be performed appropriately and easily. In addition, when the piston body 12 of the suction syringe is completely returned to the original position, the pushing operation of the piston body 12 by the push operation unit 14 is repeated, so that suction with no amount limitation is possible.

  In the above embodiment, the piston body 12 stops at the basic position shown in FIG. 1A or FIG. 4 corresponding to the length of the first spring 13, but this stopping operation is ensured and performed stably. A stopper mechanism can be provided between the cylindrical body 11 and the shaft portion 12b.

The structure of the suction syringe which concerns on the Example of this invention is shown, FIG. (A) is sectional drawing at the time of non-operation, FIG. (B) is sectional drawing at the time of pushing operation. The structure of the pushing operation part of the suction syringe of an Example is shown, FIG. (A) is the figure which looked at the small disc part from the rear end side, FIG. (B) is sectional drawing of a small disc part, FIG. FIG. 4D is a cross-sectional view of the enclosure, and FIG. It is what expanded the pushing operation part of the suction syringe of an Example, A figure (A) is sectional drawing at the time of non-operation, and FIG. (B) is sectional drawing at the time of pushing operation. It is a perspective view (partial cross section) figure which shows the state at the time of non-operation by the structure of the endoscope apparatus using the suction syringe which concerns on an Example. It is a perspective view (partial cross section) figure which shows the state at the time of pushing operation by the structure of the endoscope apparatus using the suction syringe which concerns on an Example. It is sectional drawing which shows the state at the time of non-operation by the structure of the suction operation part of the endoscope apparatus which concerns on an Example. It is sectional drawing which shows the state at the time of pushing operation by the structure of the suction operation part of the endoscope apparatus which concerns on an Example. It is a figure which shows the structure of the conventional endoscope apparatus.

Explanation of symbols

5, 33 ... suction tube, 11 ... cylinder,
12 ... piston body, 12a ... piston part (sliding part),
12b ... shaft part, 12c ... support disk part,
12d ... small disc part, 13 ... first spring,
14 ... push operation part, 15 ... suction port,
16 ... 1st ventilation path, 18 ... 2nd ventilation path,
19 ... O-ring, 20 ... Pushing,
21 ... second spring, 22 ... enclosure,
27 ... Suction port, 28 ... Suction operation part,
31 ... Storage tank 34 ... Central passageway,
35 ... piston member, 36 ... suction button,
E ₁ , E ₂ ... ventilation grooves.

Claims (3)

A cylinder having a suction port formed on the tip side;
A piston body that reciprocates in close contact with the inner surface of the cylinder and forms a first air passage through which air in the cylinder is discharged;
A first urging member that is disposed between the piston body and the cylindrical body and moves the piston body that has moved forward to the original position;
It is connected so as to reciprocate with respect to the piston body, and has a push body that serves as a pushing portion of the piston body, and is open when the push body moves forward and closed when the push body is moved back. A push operation part that forms a second air passage through which air in the cylinder from the first air passage is discharged to the outside;
A second urging member that is disposed between the push body of the push operation portion and the piston body and moves the push body moved forward by the push operation back to the original position;
When the push body of the push operation portion is pushed, the piston body is moved forward while exhausting the air inside the cylinder through the second air passage and the first air passage which are opened, and the push body is moved forward. A suction syringe that sucks fluid from a suction port while closing the second ventilation path and returning the piston body to the original position by the first biasing member when the body pushing operation is released.   The suction syringe according to claim 1 is used as a suction device for an endoscope apparatus, and an inner part using a suction syringe that pipe-connects the suction port of the cylindrical body to a fluid storage tank that is pipe-connected to a suction port of the endoscope. Endoscopic device. The suction syringe according to claim 1 is used as a suction device of an endoscope apparatus in which a suction tube is controlled to be opened and closed by a suction operation unit having a suction tube opening and closing mechanism.
A fluid storage tank is connected to the suction port connected to the suction operation unit, and a suction port of the cylindrical body is connected to the fluid storage tank by a pipe, so that the operation of the suction operation unit can be performed when the piston body moves forward. An endoscope apparatus using a suction syringe for performing suction.

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