JP6698926B1 - Medical spray equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a medical spray device having safety such that a beak tube portion does not suddenly pop out from a spray main body during treatment. SOLUTION: An engagement/disengagement cylinder 80 is fitted into a cylindrical housing 61 so as to be able to rotate forward and backward, and the engagement/disengagement cylinder 80 is advanced when the beak tube 18 is fitted into the cylinder housing 61. And the beak tube locking means for holding the beak tube 18 in position and the engaging/disengaging cylinder 80 is retracted, the beak tube locking means is released to project the beak tube 18 from the cylindrical housing 61. In order to allow the engaging/disengaging cylinder body 80 to retreat to the end edge portion of the engaging/disengaging cylinder body 80 having a tube pushing-out means and facing the locking projection 81 provided on the outer side surface of the beak tube 18. And a lock engaging surface 83 for rotating and holding the forward position of the engagement/disengagement tubular body 80. [Selection diagram] Figure 1

Description

  INDUSTRIAL APPLICABILITY The present invention is used for spraying a drug solution or antiseptic solution using a beak tube to a narrow affected area such as ear, nose, and throat, and has a safety so that the beak tube portion does not suddenly jump out from the spray body. The present invention relates to a medical spray device.

  In this type of medical spray device, as shown in FIG. 5, a chemical solution bottle 11 is detachably fitted to the lower end of the spray main body 10, and a beak tube 18 is detachably attached to the front end of the spray main body 10 so as to also serve as a grip. The drug solution bottle 11 is held with one hand, the tip spray port 20 of the beak tube 18 is made to face the affected area such as the ear, nose, or throat, and the push button 13 is pressed with the thumb. Then, the valve 12 is opened, compressed air is sent from the air tube 14 to the drug solution bottle 11 and the beak pipe 18, the drug solution 17 in the drug solution bottle 11 is sent to the drug solution pipe 19 through the drug solution tube 16, and this drug solution pipe At the tip of 19, the chemical liquid 17 is atomized by the air from the beak tube 18 and sprayed from the spray port 20 to the affected area.

  The applicant has already proposed a medical spray device in which the surgeon can attach the beak tube to the spray main body without directly touching the beak tube and can collect the beak tube after use without directly touching the beak tube. (Patent Document 1).

The medical spray device shown in Patent Document 1 is shown in FIGS. 3 and 4. A plurality of beak tubes 18 shown on the right side of FIG. 3 are vertically sterilized and vertically inserted into the insertion holes 40 of the beak tube stand 39.
Similarly, the spray body 10 is similarly sterilized, and the attachment/detachment tool 60 is fixedly attached in advance to the beak tube connection portion thereof.
When the beak tube 18 is separated from the spray main body 10, the chemical liquid tube 19, the air tube 48, and the engaging tube 79 are integrally urged outward by the pushing coil spring 76 in the beak tube 18, and the outer tube 49 and the stopper 56 are in contact with each other, and the engagement tube 79 projects slightly from the insertion end 73.
In the attaching/detaching tool 60 on the side of the spray main body 10 shown on the left side of FIG. 3, the spring receiving tube 70, the O-ring 71, and the ball receiving tube 69 are connected to the cylindrical housing 61 and the ball receiving tube 69 by the pushing coil spring 72 as the beak tube pushing means. Since the ball drop hole 67 is pushed out to the position where the step is locked and the ball drop hole 67 is closed, the movement of the locking ball 66 is restricted, and the engagement/disengagement cylindrical body 63 is locked by the engaging cutout 65. Since it is locked to, the coil spring 64 does not project outward even if it is pushed.

In this state, the spray main body 10 is grasped, and the insertion end portion 73 of the outer tube 49 of the beak tube 18 is fitted and pushed into the fitting hole 62 of the cylindrical housing 61 of the attachment/detachment tool 60. Then, the tip of the insertion end 73 is inserted inside the ball receiving tube 69, and the tip of the insertion end 73 abuts on the step inside the spring receiving tube 70, and the tip of the ball receiving tube 69 is reached. And the projection 75 abut. Further, when the spray main body 10 is pushed out and pushed in against the coil spring 72, the ball drop hole 67 reaches the ball receiving recess 74 beyond the projection 75, and the locking ball 66 becomes movable. Then, the engagement/disengagement tubular body 63 is biased by the coil spring 64 and protrudes, so that the locking ball 66 is pushed by the inclined surface inside the engagement notch 65 and engages with the ball receiving recess 74, and further engages/disengages. The cylindrical body 63 projects and the movement of the locking ball 66 is restricted by the inner wall surface thereof. The locking ball 66 and the coil spring 64 constitute a beak tube locking means.
At this time, the tip end of the engagement tube 79 is fitted into the other end of the drug solution tube insertion hole 32 in the support disk 37, and the drug solution tube 16 of the spray body 10 and the drug solution tube 19 of the beak tube 18 are connected. This state is shown in FIG.
In this manner, the beak tube 18 is attached to the spray main body 10 with the attachment/detachment tool 60 without directly touching the beak tube 18, and the medical solution or the disinfectant solution is sprayed for each patient for treatment.

  After the completion of the processing such as spraying, the beak tube 18 is inserted into the collection hole 87 of the collection case 86 while the spray body 10 is held, and the engagement/disengagement cylinder 63 of the attachment/detachment tool 60 is sandwiched with fingers to resist the coil spring 64. Pull it toward you. Alternatively, the engagement/disengagement cylinder 63 is brought into contact with the recovery hole 87 of the recovery case 86 to strongly push the spray body 10 against the coil spring 64. Then, the engagement/disengagement tubular body 63 moves toward the front, the engagement notch 65 coincides with the position of the locking ball 66, and the spring receiving pipe 70, the O-ring 71, and the ball receiving pipe 69 are pushed out by the pushing coil spring 72. , The locking ball 66 moves outward and is disengaged from the ball receiving recess 74. Then, the force of the pushing coil spring 72 causes the outer tube 49 to project from the fitting hole 62 of the cylindrical housing 61, and the force of the force causes the chemical liquid tube 19 to come out of the support disk 37, and the force of the pushing coil spring 76 causes the outer tube 49 to move. , Closes to the stopper 56 and stops. In this way, the beak tube 18 is stored in the recovery case 86.

JP, 2013-106816, A.

The conventional medical spray device having such a structure has some problems as described below.
(1) When the beak pipe 18 is fitted to the spray main body 10, the engaging ball 66 does not completely engage with the ball receiving recess 74, and the protruding portion 75 rides up in an incompletely fitted state. During the procedure of the operator, the beak tube 18 may be pushed out and jumped out by the coil spring 72.
(2) Even when the locking ball 66 of the spray main body 10 is completely engaged with the ball receiving recess 74 of the beak tube 18, the fingers grasped during the spray operation may accidentally pull in the engagement/disengagement cylinder 63. In such a case, the locking ball 66 may move outward and the engagement with the ball receiving recess 74 may be released, so that the pushing coil spring 72 may cause the chemical liquid pipe 19 to come out of the spray main body 10.

  SUMMARY OF THE INVENTION In order to solve the above problems, the present invention seeks to provide a medical spray device with safety so that the beak tube portion does not suddenly pop out from the spray body during treatment. .

The medical spray device of the present invention is
In a medical spray device in which the beak tube 18 is detachably fitted to the cylindrical housing 61 of the spray main body 10 with a detachable tool 60, and a drug solution is sprayed from the tip of the beak tube 18 with compressed air.
The engagement/disengagement cylinder 80 is fitted into the cylindrical housing 61 so as to be able to move forward and backward, and the engagement/disengagement cylinder 80 is moved forward when the beak tube 18 is fitted into the cylindrical housing 61. Beak tube locking means for holding the tube 18 in position,
When the engagement/disengagement tubular body 80 is retracted, it has beak tube pushing means for releasing the beak tube locking means and projecting the beak tube 18 from the cylindrical housing 61.
An unlocking concave portion 82 is formed in an end edge portion of the engagement/disengagement tubular body 80 so as to face the locking projection 81 provided on the outer surface of the spray main body 10 so as to allow the engagement/disengagement tubular body 80 to retract. In addition, a lock engagement surface 83 for rotating and retaining the engagement/disengagement tubular body 80 at the forward position is formed.

The engagement/disengagement tubular body 80 is rotatably fitted to the cylindrical housing 61 in addition to being moved forward and backward, and the beak tube locking means is provided between the cylindrical housing 61 and the engagement/disengagement cylindrical body 80. A locking ball 66 that engages with the beak tube 18 when the beak tube 18 is fitted into the cylindrical housing 61 and holds the fitting position of the beak tube 18, and the beak tube 18 into the cylindrical housing 61. And a coil spring 64 for holding the position of the engaging ball 66 by advancing the engaging/disengaging cylinder 80 at the time of fitting,
The beak tube push-out means is a push-out coil for releasing the engagement of the locking balls 66 and projecting the beak tube 18 out of the cylindrical housing 61 when the engagement/disengagement tubular body 80 is retracted against the coil spring 64. Spring 72,
A lock projection 81 is provided on the outer side surface of the spray main body 10 , and the lock projection 81 is formed at an end edge of the engagement/disengagement tubular body 80 facing the lock projection 81 so as to face the lock projection 81. A lock release concave portion 82 is formed with a gap for advancing and retreating the engagement/disengagement tubular body 80, and the engagement/disengagement tubular body 80 is substantially in contact with the locking projection 81 and is continuous with the lock release concave portion 82. And a lock engaging surface 83 for pivoting.

  In addition to the lock release recess 82 and the lock engagement surface 83, the end of the engagement/disengagement cylinder 80 is continuous with the lock engagement surface 83 and opposite to the lock release recess 82 from the spray body 10. A lock holding surface 84 extending in the axial direction and a lock releasing surface 85 extending in the axial direction of the spray body 10 are formed on a surface that is continuous with the lock releasing recess 82 and opposite to the lock engaging surface 83. And

  A locking coil spring 88 is interposed between the engagement/disengagement cylinder 80 and the cylindrical housing 61. One end of the locking coil spring 88 is fixed to the engagement/disengagement cylinder 80 and the other end is fixed to the cylindrical housing 61. The engagement/disengagement cylinder 80 is rotated and automatically locked by rotating the engagement/disengagement cylinder 80.

  The coil spring 64 has one end of the coil spring 64 fixed to the engagement/disengagement cylinder 80 and the other end fixed to the cylindrical housing 61 to urge a rotational force to the engagement/disengagement cylinder 80. The coil spring 64 as the locking means is also used as the locking means.

According to the invention of claim 1,
In a medical spray device in which a beak tube is detachably fitted to a cylindrical housing of a spray main body with a detachable tool, and a drug solution is sprayed from the tip of the beak tube with compressed air,
An engagement/disengagement cylinder is fitted to the cylindrical housing so as to be rotatable forward and backward, and the engagement/disengagement cylinder is advanced to hold the beak tube in position when the beak tube is fitted to the cylindrical housing. Beak locking means,
And a beak tube pushing-out means for releasing the beak tube locking means and projecting the beak tube from the cylindrical housing when the disengaging cylinder is retracted.
A lock release recess is formed at the end edge of the engagement/disengagement cylinder facing the locking projection provided on the outer surface of the spray main body so that the engagement/disengagement cylinder can be retracted. Since the lock engagement surface for rotating and maintaining the position of the cylindrical body in the forward movement position is formed, the forward and backward movement of the engagement/disengagement cylindrical body can be performed with the beak tube fitted in the cylindrical housing of the spray main body. Since it is not possible, the chemical liquid pipe does not come out of the spray body. Further, since it can be rotated at the forward position of the engagement/disengagement cylinder, it can be confirmed that it is securely locked.

According to the invention of claim 2,
In a medical spray device in which a beak tube is detachably fitted to a cylindrical housing of a spray main body with a detachable tool, and a drug solution is sprayed from the tip of the beak tube with compressed air,
An engagement/disengagement cylinder is fitted to the cylindrical housing so as to be rotatable forward and backward, and is provided between the cylinder housing and the engagement/disengagement cylinder, and is provided when the beak tube is fitted to the cylinder housing. A locking ball that engages with the beak tube to hold the fitting position of the beak tube, and the engagement/disengagement cylinder is moved forward when the beak tube is fitted into the cylindrical housing to hold the position of the locking ball. Beak tube locking means comprising a coil spring for
When the engagement/disengagement tubular body is retracted against the coil spring, it has a beak tube pushing-out means including a push-out coil spring that releases the engagement of the locking ball and projects the beak tube from the cylindrical housing,
A locking projection is provided on the outer surface of the spray body , and the locking projection is provided at the end of the locking projection on the locking projection side facing the locking projection. A lock release recess is formed with a gap for advancing and retracting the body, and a lock engagement surface that is continuous with the lock release recess and that rotates the engagement/disengagement cylinder substantially in contact with the locking protrusion. Since the locking projection is formed, the locking projection can be smoothly rotated to lock the projection of the beak tube on the lock engagement surface that is continuous from the position of the lock release recess of the engaged and disengaged cylindrical body.

According to the invention of claim 3,
In addition to the lock release recess and the lock engagement surface, an end of the engagement/disengagement cylinder has a lock extending in the axial direction of the spray main body which is continuous with the lock engagement surface and opposite to the lock release recess. Since the holding surface and the lock releasing surface which is continuous with the lock releasing concave portion and which is opposite to the lock engaging surface and extends in the axial direction of the spray main body are formed, the locking projection comes into contact with the lock holding surface during locking. The lock can be surely released by rotating up to, and when the lock is released, the lock can be surely released by rotating until the lock projection 81 comes into contact with the lock release surface.

According to the invention of claim 4,
A locking coil spring is interposed between the engagement/disengagement cylinder and the cylindrical housing, and one end of the locking coil spring is fixed to the engagement/disengagement cylinder body and the other end is fixed to the cylinder housing to form the engagement/disengagement cylinder body. Since the turning force is applied, when the beak tube is fitted and the engagement/disengagement cylinder is moved forward, the engagement/disengagement cylinder can be automatically rotated and locked by the lock coil spring. Further, if the engagement/disengagement cylinder is rotated against the coil spring for locking and the beak tube is pulled out at the time of unlocking, the engagement/disengagement cylinder is urged by a rotating force to wait for the next operation.

According to the invention of claim 5,
In the coil spring, one end of the coil spring is fixed to the engagement/disengagement cylinder body and the other end is fixed to the cylindrical housing to urge a rotational force to the engagement/disengagement cylinder body. Since the spring can be used as a means for urging the turning force to the engagement/disengagement cylinder, the structure is simplified.

1 shows an embodiment of a medical spray device according to the present invention, (a) is an exploded front view in which a part of the beak tube 18 inserted in a beak tube stand 39 is cut away before being fitted to a spray body 10. (B-1) is a partially cutaway front view of the beak tube 18 fitted to the spray main body 10, (b-2) is a left side view of (b-1), and (c) is A front view of the beak tube 18 fitted to the spray body 10 and locked, (d) is a front view of the beak tube 18 fitted to the spray body 10 and unlocked. It is sectional drawing which shows the other Example of this invention. It is sectional drawing before fitting the beak tube 18 of the medical spraying device previously proposed by the present applicant. It is sectional drawing after fitting the beak tube 18 of the medical spray apparatus in FIG. It is a front view of the conventional medical spray apparatus.

The present invention is
In a medical spray device in which the beak tube 18 is detachably fitted to the cylindrical housing 61 of the spray main body 10 with a detachable tool 60, and a drug solution is sprayed from the tip of the beak tube 18 with compressed air.
The engagement/disengagement cylinder 80 is fitted into the cylindrical housing 61 so as to be able to move forward and backward, and the engagement/disengagement cylinder 80 is moved forward when the beak tube 18 is fitted into the cylindrical housing 61. Beak tube locking means for holding the tube 18 in position,
When the engagement/disengagement tubular body 80 is retracted, it has beak tube pushing means for releasing the beak tube locking means and projecting the beak tube 18 from the cylindrical housing 61.
An unlocking concave portion 82 is formed in an end edge portion of the engagement/disengagement tubular body 80 so as to face the locking projection 81 provided on the outer surface of the spray main body 10 so as to allow the engagement/disengagement tubular body 80 to retract. At the same time, a lock engagement surface 83 is formed to rotate the engagement/disengagement tubular body 80 at the forward position to hold the position .

More specifically,
The engagement/disengagement cylinder body 80 is fitted into the cylindrical housing 61 so as to be rotatable forward and backward, and is provided between the cylinder housing 61 and the engagement/disengagement cylinder body 80, and the cylindrical housing 61 of the beak tube 18 is provided. Engaging ball 66 that engages with the beak tube 18 at the time of fitting and holds the fitting position of the beak tube 18, and the engagement/disengagement cylinder at the time of fitting the beak tube 18 into the cylindrical housing 61. Beak tube locking means composed of a coil spring 64 for advancing 80 to hold the position of the locking ball 66,
A beak tube composed of a push-out coil spring 72 that disengages the engagement ball 66 and causes the beak tube 18 to project from the cylindrical housing 61 when the engagement/disengagement cylinder 80 is retracted against the coil spring 64. Having a pushing means,
A lock projection 81 is provided on the outer side surface of the spray main body 10 , and the lock projection 81 is formed at an end edge of the engagement/disengagement tubular body 80 facing the lock projection 81 so as to face the lock projection 81. A lock release concave portion 82 is formed with a gap for advancing and retracting the engagement/disengagement tubular body 80, and the engagement/disengagement tubular body 80 is substantially in contact with the locking projection 81 continuously with the lock release concave portion 82. And a lock engaging surface 83 for pivoting.

  In addition to the lock releasing recess 82 and the lock engaging surface 83, the spray main body 10 is provided on the end edge of the engaging/disengaging cylinder 80, which is continuous with the lock engaging surface 83 and opposite to the lock releasing recess 82. A lock holding surface 84 extending in the axial direction and a lock releasing surface 85 extending in the axial direction of the spray main body 10 are formed on a surface which is continuous with the lock releasing recess 82 and opposite to the lock engaging surface 83.

  In order to automatically lock, a locking coil spring 88 is interposed between the engagement/disengagement tubular body 80 and the cylindrical housing 61, one end of the locking coil spring 88 is attached to the engagement/disengagement tubular body 80, and the other end is provided to the above-mentioned. It is fixed to the cylindrical housing 61 to apply a turning force to the engagement/disengagement tubular body 80.

  The coil spring 64 also has a function of fixing one end of the coil spring 64 to the engagement/disengagement cylinder body 80 and the other end to the cylindrical housing 61 to urge a rotational force to the engagement/disengagement cylinder body 80.

Embodiment 1 of the present invention will be described below with reference to the drawings.
In the present invention, the engagement/disengagement cylinder body 80 peculiar to the invention is provided in place of the engagement/disengagement cylinder body 63 in the conventional attachment/detachment tool 60.
In FIG. 1, on the outer upper surface of the spray main body 10, a locking projection 81 is formed which is elongated in the axial direction and has semicircular arc-shaped ends.
The engagement/disengagement tubular body 80, which is longer in the base direction than the conventional engagement/disengagement tubular body 63, is fitted into the cylindrical housing 61 of the attachment/detachment tool 60 so as to be rotatable forward and backward. The engagement/disengagement cylinder body 80 has the same structure as the engagement notch 65 on the inner surface, the coil spring 64, etc., but is similar to the conventional engagement/disengagement cylinder body 63 shown in FIGS. The lock releasing recess 82, the lock engaging surface 83, the lock holding surface 84, and the lock releasing surface 85, which are formed at the end edge of the, are configurations peculiar to the present invention.

Specifically, as shown in FIG. 1A, the beak tube 18 is not fitted in the spray body 10, that is, the engagement/disengagement cylinder 80 is pulled back to the base side of the spray body 10. When the locking ball 66 is locked in the engagement notch 65 at the inner end of the engagement/disengagement tubular body 80, the lock release recess 82 is fitted to the end of the locking projection 81. Is formed as. A linear lock engaging surface 83 is formed on one side of the lock releasing recess 82 in a direction orthogonal to the axial direction of the spray body 10. The end of the lock engaging surface 83 opposite to the lock releasing recess 82 is raised in the axial direction to form a lock holding surface 84. A surface of the unlocking concave portion 82 opposite to the lock engaging surface 83 is raised in the axial direction to form a lock releasing surface 85.
As shown in FIG. 1( c ), the position of the lock engaging surface 83 is such that when the beak tube 18 is fitted into the spray body 10 and the engagement/disengagement cylinder 80 is projected, the tip of the locking projection 81 is It is formed at a locking position.

  As shown in FIG. 1(b-2), the length of the lock engagement surface 83 is such that the engagement/disengagement cylinder 80 is rotated to the left in the figure so that the tip of the locking projection 81 is aligned with the lock engagement surface 83. The length of the engagement/disengagement tubular body 80 does not easily return to the position of the lock release recess 82 when locked, and the central angle θ is about 45 to 90.

The attachment/detachment action of the beak tube 18 in the above configuration will be described.
In FIG. 1( a ), when the beak tube 18 is not fitted in the fitting hole 62 of the spray body 10, the engagement/disengagement tubular body 80 has the locking projection 81 fitted in the unlocking recess 82. It cannot move, and since the locking ball 66 is locked in the engagement notch 65, it cannot move forward.
In this state, the insertion end 73 of the sterilized beak tube 18 is fitted into the fitting hole 62 of the cylindrical housing 61 without being touched by the insertion hole 40 of the beak tube stand 39, and spraying is performed. Press firmly into the body 10. Then, as described above, the beak tube 18 is coupled to the cylindrical housing 61.

  As shown in FIG. 1(b-1), when the beak tube 18 is connected to the cylindrical housing 61, the locking ball 66 fits into the ball receiving recess 74 of the beak tube 18 and the coil spring 64 disengages the cylinder. The body 80 projects to form a gap between the tip of the lock projection 81 and the lock release recess 82.

As shown in FIG. 1(c), the operator pinches the engagement/disengagement tubular body 80 with his/her finger in a state in which a gap is formed between the tip end portion of the locking projection 81 and the unlocking recessed portion 82, and rotates to the left in the figure. Move. Then, the tip of the locking projection 81 slides on the lock engaging surface 83, comes into contact with the lock holding surface 84, and stops.
In this state, the engagement/disengagement cylinder body 80 cannot be retracted toward the base portion of the spray main body 10, so that the engagement/disengagement cylinder body 63 cannot be accidentally retracted, and the locking ball 66 is disengaged from the ball receiving recess 74. Since the beak tube 18 does not occur, there is no risk that the beak tube 18 will come out of the spray main body 10, and a safe treatment such as chemical injection can be performed.
In addition, the fact that the engagement/disengagement tubular body 80 can be rotated leftward in the figure while the tip of the locking projection 81 slides on the lock locking surface 83 means that the locking ball 66 rides on the projection 75. It can be seen that the ball is not completely fitted in the ball receiving recess 74.

  When the beak tube 18 is pulled out from the spray main body 10 after the treatment such as the chemical liquid injection is completed, as shown in FIG. 1(d), the engagement/disengagement tubular body 80 is pinched with a finger to unlock the tip portion of the locking projection 81. It rotates in the right direction in the figure until it comes into contact with the surface 85, and the engagement hole 80 of the recovery case 86 is inserted into the recovery hole 87 of the recovery case 86 with a gap formed between the tip of the locking projection 81 and the unlocking recess 82. Press the peripheral part. Alternatively, the engagement/disengagement tubular body 80 is pulled toward the base portion. Then, the beak tube 18 is pushed out by the push-out coil spring 72, the locking ball 66 moves from the ball receiving recess 74 to the engaging notch 65, and the beak tube 18 is released from the locked state. Then, the beak tube 18 pops out into the recovery case 86 and is recovered, and the state returns to the state of FIG.

In the embodiment described above, after the beak tube 18 is fitted to the spray body 10, the engagement/disengagement cylinder 80 is locked by pinching the engagement/disengagement cylinder 80 with a finger and rotating the lock projection 81 to the left. The tip portion is locked to the lock locking surface 83.
However, the present invention is not limited to this example, and a configuration example in which the engagement/disengagement tubular body 80 is automatically locked when the beak tube 18 is fitted to the spray body 10 will be described with reference to FIG.

  A spring housing gap 89 is formed between the outer circumference of the cylindrical housing 61 and the inner circumference of the locking projection 81 to house the locking coil spring 88, and one end portion 88a of the locking coil spring 88 is engaged and disengaged from the cylinder. It is fixed to the body 80, and the other end 88b is fixed to the cylindrical housing 61. Then, a twisting force that returns to the left in the drawing by an angle α larger than the angle θ of the lock engaging surface 83 is applied to the locking coil spring 88 in advance. At this time, it is necessary to set the number of windings and the axial length of the spring accommodating gap 89 of the locking coil spring 88 so that the engaging and disengaging cylinder body 80 can be prevented from moving forward and backward. .

In such a structure, when the beak tube 18 is fitted into the fitting hole 62 of the spray body 10 as shown in FIG. 1B-1, the locked state of the locking ball 66 is released, and the coil spring 64 causes As shown in FIG. 1C, the engagement/disengagement tubular body 80 is rotated leftward by the locking coil spring 88 until the locking projection 81 contacts the lock holding surface 84. Locked.
In order to release the lock, the beak pipe 18 can be removed by returning the engagement/disengagement cylinder 80 to the position shown in FIG. 1D against the locking coil spring 88 and retracting the engagement/disengagement cylinder 80.

  The lock coil spring 88 can also be used as the pushing coil spring 64 without newly providing it. In this case, one end of the coil spring 64 is fixed to the engagement/disengagement cylinder 80, and the other end is fixed to the cylindrical housing 61. In addition, it is necessary to set the number of windings so as not to cause a problem in the forward and backward movements of the engagement/disengagement tubular body 80.

  DESCRIPTION OF SYMBOLS 10... Spray main body, 11... Chemical liquid bottle, 12... Valve, 13... Push button, 14... Air tube, 15... Beak pipe connection part, 16... Chemical liquid tube, 17... Chemical liquid, 18... Beak pipe, 19... Chemical liquid pipe, 20 ... Spray port, 21... Screw part, 22... O ring, 29... Coil spring, 30... Insertion ring, 31... Air hole, 32... Chemical solution pipe inserting hole, 33... Chemical solution tube connecting part, 34... Air hole, 36... Air intake groove, 37... Support disc, 38... Detachment tool, 39... Beak tube stand, 40... Insertion hole, 42... Housing, 43... Through hole, 44... Push button, 45... Spring part, 46... Locking ring, 47... Locking part, 48... Air tube, 49... Outer tube, 50... Locking groove, 51... O ring, 52... O ring, 53... Washer, 54... Engaging part, 55... Air groove, 56... Stopper , 57... Inner hole portion, 58... Recessed portion, 59... Cut groove, 60... Detachment tool, 61... Cylindrical housing, 62... Fitting hole, 63... Engaging/disengaging cylinder body, 64... Coil spring, 65... Engagement notch , 66... Locking balls, 67... Ball drop holes, 68... O-rings, 69... Ball receiving tubes, 70... Spring receiving tubes, 71... O-rings, 72... Extrusion coil springs, 73... Inserting end portions, 74... Balls Receiving concave portion, 75... Projection portion, 76... Push-in coil spring, 77... Screw portion, 78... O-ring, 79... Engaging tube, 80... Engaging cylinder body, 81... Locking protrusion, 82... Lock releasing concave portion, 83 ... lock engagement surface, 84... lock holding surface, 85... lock release surface, 86... recovery case, 87... recovery hole, 88... locking coil spring, 89... spring storage gap.

Claims (5)

In a medical spray device in which a beak tube is detachably fitted to a cylindrical housing of a spray main body with a detachable tool, and a drug solution is sprayed from the tip of the beak tube with compressed air,
An engagement/disengagement cylinder is fitted to the cylindrical housing so as to be rotatable forward and backward, and the engagement/disengagement cylinder is advanced to hold the beak tube in position when the beak tube is fitted to the cylindrical housing. Beak locking means,
And a beak tube pushing-out means for releasing the beak tube locking means and projecting the beak tube from the cylindrical housing when the disengaging cylinder is retracted.
A lock release recess is formed at the end edge of the engagement/disengagement cylinder facing the locking projection provided on the outer surface of the spray main body so that the engagement/disengagement cylinder can be retracted. A medical spraying device, characterized in that a lock engagement surface for rotating and holding the decapsulating body in a forward position is formed. In a medical spray device in which a beak tube is detachably fitted to a cylindrical housing of a spray main body with a detachable tool, and a drug solution is sprayed from the tip of the beak tube with compressed air,
An engagement/disengagement cylinder is fitted to the cylindrical housing so as to be rotatable forward and backward, and is provided between the cylinder housing and the engagement/disengagement cylinder, and is provided when the beak tube is fitted to the cylinder housing. A locking ball that engages with the beak tube to hold the fitting position of the beak tube, and the engagement/disengagement cylinder is moved forward when the beak tube is fitted into the cylindrical housing to hold the position of the locking ball. Beak tube locking means comprising a coil spring for
When the engagement/disengagement tubular body is retracted against the coil spring, it has a beak tube pushing-out means including a push-out coil spring that releases the engagement of the locking ball and projects the beak tube from the cylindrical housing,
A locking projection is provided on the outer surface of the spray body , and the locking projection is provided at the end of the locking projection on the locking projection side facing the locking projection. A lock release recess is formed with a gap for advancing and retracting the body, and a lock engagement surface that is continuous with the lock release recess and that rotates the engagement/disengagement cylinder substantially in contact with the locking protrusion. A medical spray device characterized in that   In addition to the lock release recess and the lock engagement surface, an end of the engagement/disengagement cylinder has a lock extending in the axial direction of the spray main body which is continuous with the lock engagement surface and opposite to the lock release recess. The medical spray device according to claim 2, wherein a holding surface and a lock release surface which is continuous with the lock release recess and which is opposite to the lock engagement surface and extends in the axial direction of the spray body are formed.   A locking coil spring is interposed between the engagement/disengagement cylinder and the cylindrical housing, and one end of the locking coil spring is fixed to the engagement/disengagement cylinder body and the other end is fixed to the cylinder housing to form the engagement/disengagement cylinder body. The medical spray device according to claim 1, 2 or 3, wherein a turning force is applied. The coil spring is characterized in that one end of the coil spring is fixed to the engagement/disengagement cylinder and the other end is fixed to the cylindrical housing to urge a rotational force to the engagement/disengagement cylinder. The medical spray device described.

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