JP2001187990A - Medical connecting member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a safe and reliable medical connecting member having no danger of being unlocked in any case because there is a danger that a patient itself or a third person such as visitor touches the connection part of a medical tool by mischief to consciously or unconsciously release the lock of the connection part in the absence of a medically engaged person during a hospital treatment such as installation requiring a long time in a sickroom. SOLUTION: This member comprises a first tube body 2 and second tube body 3 which can be mutually fitted, a female screw member 4 provided on one of the tube bodies, and a male screw member 5 provided on the other. The female screw member 4 is rotated in the closing direction but idled in the loosening direction, so that the lock is never loosened even if the connection part is touched by mischief.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a medical connecting member used in the field of medical treatment, and more particularly, to a connection member which can be easily and securely connected, and has a risk that once connected, the connection portion is not consciously or unconsciously removed. The present invention relates to a medical connecting member having high reliability.

[0002]

2. Description of the Related Art In a treatment site such as a hospital, a plurality of medical devices, for example, an infusion set and an extension tube may be connected and used. Many of these medical devices are connected simply by fitting a common lubricating surface such as a luer taper.However, there is a risk that the medical device may come off during treatment. Have also appeared.

[0003]

However, when performing treatment such as intravenous drip that requires a long time in a hospital room due to hospitalization,
The management by the healthcare worker is intermittent (not rigorous), and in the absence of the healthcare worker, a third party such as a patient or a visitor may mischiefly touch the connection part of the medical device, There is a risk that the lock of the connection portion may be unlocked consciously or unconsciously, and there has been a problem of insufficient injection of a chemical solution or the like and contamination by bacteria. Also, the patient ’s own actions,
For example, there has been a considerable danger that the lock will be loosened and come off by moving the arm to which the tip (needle) of the infusion set is connected.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and it is an object of the present invention to easily and securely fix a connection portion of a medical device and to establish a connection between a patient and a visitor once connected. An object of the present invention is to provide a medical connection member with high safety and high reliability without danger of being removed by the consciousness and unconsciousness of the three parties. The other purpose is to ensure the above-mentioned safety and reliability, and to avoid disconnection after connection, in order to prevent disconnection under conditions that require additional actions. It is to provide a connecting member.

[0005]

In order to achieve the above object, the present invention comprises a first tube and a second tube which can be fitted together, and a female screw member is provided on one of the two tubes. On the other hand, male screw members are provided, and these screw members rotate in the closing direction and idle in the loosening direction, so that the lock is not loosened even if the connection portion is touched unnecessarily.

According to a second aspect of the present invention, the female screw member comprises an outer cylinder and a female screw cylinder fitted in the outer cylinder so as to be slidable in a circumferential direction. Between the cylinder and the cylinder, when the outer cylinder is rotated in one direction, it is engaged with each other, and when the outer cylinder is rotated in the other direction, it is provided with engagement means that is disengaged, and in the closing direction, A simple mechanism can realize a configuration that rotates and idles in the loosening direction.

Further, according to a third aspect of the present invention, the female screw member comprises an outer cylinder, and a female screw cylinder fitted in the outer cylinder so as to be slidable in the circumferential and axial directions. When the outer cylinder is rotated in one direction between the cylinder and the female screw cylinder, the first cylinder is engaged with each other, and when the outer cylinder is rotated in the other direction, the first engagement means is disengaged. It is characterized by having provided second engagement means capable of engaging with each other between the outer cylinder and the female screw cylinder at a position where the female screw cylinder is slid in the axial direction, rotating in the closing direction, and rotating in the loosening direction. In addition to the idle running configuration, the connection can be released with additional actions when necessary.

Further, according to a fourth aspect of the present invention, the male screw member has an outer cylinder, and when the outer cylinder is rotated in one direction, it engages with the female screw member and rotates in the other direction. An engaging means that is disengaged when provided is provided, and even if an outer cylinder is provided on the male screw member side, the same function as the invention according to claim 2 can be exhibited.

Further, according to a fifth aspect of the present invention, the male screw member has an outer cylinder, and when the outer cylinder is rotated in one direction, it engages with the female screw member and rotates in the other direction. While providing a third engagement means that is disengaged when it is made to
Fourth engaging means capable of engaging with each other between the outer cylinder and the female screw member at a position where the outer cylinder or the female screw member is slid in the axial direction is provided, and the outer cylinder is provided on the male screw member side. Thus, it is configured such that the same function as the invention described in claim 3 can be exhibited.

[0010]

FIG. 1 shows an embodiment of the present invention.
This will be described with reference to FIGS. 1 is a partially cutaway perspective view showing a state before connection of the medical connection member of the present invention, FIG. 2 is a partially cutaway exploded perspective view of the female member side of the medical connection member of the present invention, and FIG. FIG. 4 is a cross-sectional view showing a process at the time of disconnection of the medical connection member of the present application, and FIG. 5 is a cross-sectional view showing one modified example of the female screw member and the male screw member of the medical connection member of the present application. , (A) before connection and (b) after connection.

The medical connection member 1 of the present application has a first tube 2 and a second tube 3 that can be fitted to each other, and a female screw member 4 is provided in the first tube 2 in a loose fitting manner. The second pipe 3 is provided with a male screw member 5. The female screw member 4 and the male screw member 5 are configured to be rotatable in a direction in which the first tube 2 and the second tube 3 are fitted and closed with each other, but idle in a loosening direction.

The female screw member 4 comprises, as shown in FIG. 1, an outer cylinder 41 and a female screw cylinder 42 slidably inserted in the outer cylinder 41 in the circumferential direction. The outer cylinder 41 and the female screw cylinder 42 are formed in a bell-shaped cross section by an elastic material such as resin, and through holes 41 'and 4 are formed in the center of the closed surface.
2 'are provided, respectively, and the first tube 2 is inserted through the through holes 41' and 42 'in a loose fitting manner.

The first tube 2 has a through hole 4 of the outer cylinder 41.
A flange piece 2a that can be locked to 1 'is fixed so as not to come off. The proximal end (upper end) of the first tubular body 2 is connected to, for example, a tube 6 of an infusion set. Also,
An extension tube 6 ′ is connected to a base end (lower end) of the second tubular body 3.

The fitting portions 2 'and 3' between the first tubular body 2 and the second tubular body 3 can secure airtightness by fitting, but other fitting means can be used. good. For example, a pin needle (not shown) communicating with the tube 6 is provided in the tube of the first tube 2, and an elastic film (a rubber plate or the like) through which the pin needle passes is provided in the second tube 3. It may be provided to ensure airtightness.

As shown in FIG. 2 (a), the female screw cylinder 42 inserted into the outer cylinder 41 is provided with an annular rib 42a provided along the outer periphery at the lower end side. Is engaged with an annular rib 41a provided along the annular rib 41a.
The top can be slid in the circumferential direction,
It is configured not to fall off.

The female screw cylinder 42 has an outer cylinder height h shorter than the inner cylinder height h 'of the outer cylinder 41 and has an axial direction (a) within a range of an undercut portion 43 provided on the inner peripheral wall of the outer cylinder 41. (A 'direction). The sliding of the female screw cylinder 42 in the axial direction (the sliding of the outer cylinder 41 toward the back) is normally performed as follows.
It is regulated by a plurality of (two in the figure) spatula pieces 44 provided on the periphery of the upper surface of the female screw cylinder 42 (see FIG. 3).

The spatula-shaped piece 44 acts on cams 45 provided at a plurality of locations on the inner peripheral wall of the outer cylinder 41. The cam 4
As shown in FIG. 2B, 5 is formed by projecting in the form of a wedge in cross section along an arc surface, and when the outer cylinder 41 is turned in a direction (arrow A) such that the step portion 45 'of the cam 45 becomes the head. When the step 45 'is locked to the spatula-shaped piece 44 and the female screw cylinder 42 is rotated integrally, the outer cylinder 41 is turned in a direction (arrow B) such that the step 45' of the cam 45 is at the rear end. The step portion 45 'jumps over the female screw cylinder 42 because the step portion 45' jumps by the elasticity of the material without being locked to the spatula-shaped piece 44. The spatula-shaped piece 44 and the cam 45 having a wedge-shaped cross section along the arc surface constitute first locking means.

The outer cylinder 41 is bent (bently deformed) against the tension of the spatula-shaped piece 44 of the female screw cylinder 42, as shown in FIG.
When the outer cylinder 41 is rotated in the circumferential direction in a state where the outer cylinder 41 is pressed down (the same applies to the case where the female screw cylinder 42 is pushed into the back side of the outer cylinder 41), the outer cylinder 41 is provided above the undercut portion 43 of the outer cylinder 41. The plurality of projections 46 engage with projections 47 provided below the female screw cylinder 42, and the outer cylinder 41 and the female screw cylinder 42
Are designed to rotate together. That is, in a normal state, even when the outer cylinder 41 is in a direction in which the outer cylinder 41 idles with respect to the female screw cylinder 42 (arrow B), the female screw cylinder 42 follows the outer cylinder 41. The plurality of projections 46 on the outer cylinder 41 side and the projections 47 on the female screw cylinder 42 side constitute second locking means.

FIG. 5 (a) shows a female screw member 4 provided integrally with the first tube 2 and a male screw member 5 provided on the second tube 3.
An engagement means that engages with the female screw member 4 when the external cylinder is rotated in one direction and disengages with the female screw member 4 when rotated in the other direction. Is provided. More specifically, a cam 52 having the same shape as the cam 45 (a wedge-shaped cross section along an arc surface) is provided at a plurality of locations on the inner peripheral wall in the outer cylinder 51 of the male screw member. A strip 53 is suspended from a disk member 54 integral with the male screw member. By the action of the cam 52 and the spatula-shaped piece 53, the outer cylinder 51 has the female screw member 5 attached to the female screw member 4, and
As shown in (b), they rotate integrally in the connecting direction (closing direction) and idle in the opposite direction (loosening direction). The spatula-shaped piece 53 and the cam 52 constitute third locking means.

In FIG. 5B, the spatula-shaped piece 53
When the outer cylinder 51 is slid upward as indicated by an arrow, the outer cylinder 51 bends and deforms in the same manner as in FIG. 4, and a plurality of projections 55 provided around the disc member 54 of the male screw member 5 The portion 56 is relatively lowered and the undercut portion 56
The outer cylinder 51 and the disk member 54 (the male screw member 5) rotate integrally with each other by engaging with a projection 57 provided at the lower portion of the outer cylinder 51. The plurality of protrusions 55 on the outer cylinder 51 side and the protrusions 57 on the male screw member 5 side constitute fourth locking means.

Next, in the above embodiment, the tube 6
When the tube 6 'is connected to the first tube 2, the first tube 2 on the tube 6 side and the second tube 3 on the tube 6' side are fitted to each other. Thereby, the female screw member 4 and the male screw member 5 face each other so as to be able to be closed.

Thereafter, when the outer cylinder 41 constituting the female screw member 4 is turned in the direction of arrow A, the outer cylinder 41 and the outer cylinder 41 are rotated.
The female screw cylinder 42 is the same as the outer cylinder 41 by the action of the first locking means comprising a cam 45 and a spatula-shaped piece 44 provided between the female screw cylinder 42 and the female screw cylinder 42 slidably inserted in the circumferential direction. It rotates integrally in the direction and effectively acts on the male screw member 5 of the second tubular body 3 (without closing), so that it is securely locked (see FIG. 3).

After closing, even if the outer cylinder 41 forming the female screw member 4 is turned in the direction in which the screwing is loosened due to mischief, the outer cylinder 41 and the female screw cylinder inserted into the outer cylinder 41 are inserted. 42, the cam 45 and the spatula-shaped piece 44 provided between the cam 45 cause the first locking means to run idle.
There is no loosening. That is, the closed state is maintained.

On the other hand, after the tube is closed, an additional action is taken to avoid that the first tube 2 on the tube 6 side and the second tube 3 on the tube 6 'side cannot be cut off at all. Can be released under the condition involving. That is, in the state of FIG. 3, a doctor or other medical worker presses the outer cylinder 41 relatively downward, whereby the female screw cylinder 42 is opposed to the spatula-shaped piece 44 (the spatula-shaped piece 44 is bent). (Deformation), the undercut portion 43 is raised, and the upper protrusion 46 of the undercut portion 43 and
The second engagement means including the lower projection 47 of the female screw cylinder 42 acts to unite the female screw cylinder 42 and the outer cylinder 41 and cause the female screw cylinder 42 to rotate with the outer cylinder 41. Will be canceled.

[0025]

As described above, the present invention has a first tube and a second tube which can be fitted to each other, and a female screw member is provided on one of the two tubes and a male screw member is provided on the other. Since these screw members are configured to rotate in the closing direction and idle in the loosening direction, the connection portion of the medical device can be easily and reliably fixed,
Once connected, there is no danger of being removed by the consciousness or unconsciousness of the patient or visitor, and there is no danger of injecting chemicals or the like or contamination by bacteria, and is a highly safe and reliable medical connection member. Can be provided. Considering the current situation in which home treatment is also increasing, as in recent years, further effectiveness can be ensured.

According to a second aspect of the present invention, the female screw member comprises an outer cylinder and a female screw cylinder fitted in the outer cylinder so as to be slidable in the circumferential direction. It is characterized in that an engagement means is provided between the cylinder and the outer cylinder when the outer cylinder is rotated in one direction, the engagement means is engaged with each other, and when the outer cylinder is rotated in the other direction, the engagement means is disengaged. Rotate in the direction,
This has an excellent effect that a configuration in which the idle rotation is performed in the loosening direction can be realized by a simple mechanism.

Further, according to a third aspect of the present invention, the female screw member comprises an outer cylinder, and a female screw cylinder fitted in the outer cylinder so as to be slidable in the circumferential and axial directions. When the outer cylinder is rotated in one direction between the cylinder and the female screw cylinder, the first cylinder is engaged with each other, and when the outer cylinder is rotated in the other direction, the first engagement means is disengaged. Because the female screw cylinder is provided with second engagement means that can engage with each other between the outer cylinder and the female screw cylinder at a position where the female screw cylinder is slid in the axial direction,
In addition to the configuration in which it rotates in the closing direction and idles in the loosening direction, it has an excellent effect that the connection can be released by an additional action when necessary.

Further, according to a fourth aspect of the present invention, the male screw member has an outer cylinder, and when the outer cylinder is rotated in one direction, it engages with the female screw member and rotates in the other direction. It is characterized by the provision of an engagement means that is disengaged when it is made to be engaged, so that even if an outer cylinder is provided on the male screw member side, it rotates in the closing direction and idles in the loosening direction. It has an excellent effect that it can be realized by a simple mechanism.

Further, according to a fifth aspect of the present invention, the male screw member has an outer cylinder, and when the outer cylinder is rotated in one direction, it engages with the female screw member and rotates in the other direction. While providing a third engagement means that is disengaged when it is made to
Since the outer cylinder or the female screw member is provided with fourth engagement means capable of engaging with each other between the outer cylinder and the female screw member at a position where the female screw member is slid in the axial direction, the outer cylinder is provided on the male screw member side. Even if the outer cylinder is provided on the male screw member side, in addition to the configuration that rotates in the closing direction and idles in the loosening direction,
This has an excellent effect that the connection can be released by performing an additional action when necessary.

[Brief description of the drawings]

FIG. 1 is a partially cutaway perspective view showing a state before connection of a medical connection member of the present application.

FIG. 2 is a partially cutaway exploded perspective view of the medical connection member of the present application on the female member side.

FIG. 3 is a cross-sectional view of the medical connection member of the present invention at the time of connection.

FIG. 4 is a cross-sectional view showing one process when disconnecting the medical connection member of the present application.

FIG. 5 is a cross-sectional view showing one modified example of a female screw member and a male screw member of the medical connection member of the present application, wherein (a) shows a state before connection;
(B) is after connection.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Medical connection member 2 of this application 2 First tube 2a Flange piece 3 Second tube 4 Female screw member 5 Male screw member 6 Tube 6 'Extension tube 41 Outer tube 41' Through hole 41a Annular rib 42 Female screw tube 42 'Through hole 42a Annular Rib 43 undercut portion 44 spatula-shaped piece 45 cam 45 'cam step 46, 47 protrusion 51 outer cylinder of male screw member 52 cam 53 spatula-shaped piece 54 disk member 55 protrusion 56 undercut portion 57 protrusion

Claims (5)

[Claims] A first tube and a second tube which can be fitted to each other, wherein one of the two tubes is provided with a female screw member and the other is provided with a male screw member, and these screw members are closed. A medical connecting member configured to rotate in the insertion direction and idle in the loosening direction. 2. The female screw member comprises an outer cylinder, and a female screw cylinder fitted in the outer cylinder so as to be slidable in a circumferential direction. An outer cylinder is provided between the outer cylinder and the female screw cylinder. 2. The medical connection member according to claim 1, further comprising an engagement unit that engages with each other when rotated in one direction and disengages when rotated in another direction. 3. The female screw member comprises an outer cylinder, and a female screw cylinder slidably fitted in the outer cylinder in a circumferential direction and an axial direction. When the cylinder is rotated in one direction, it is engaged with each other, and when it is rotated in the other direction, it is provided with first engagement means that is disengaged, and the outer cylinder or the female screw cylinder is slid in the axial direction. The medical connection member according to claim 1, further comprising a second engagement means that can engage with each other between the outer cylinder and the female screw cylinder at the set position. 4. The male screw member has an outer cylinder, and engages with the female screw member when the outer cylinder is rotated in one direction;
2. The medical connection member according to claim 1, further comprising an engagement unit that is disengaged when rotated in another direction. 5. The male screw member has an outer cylinder, and engages with the female screw member when the outer cylinder is rotated in one direction.
A third engaging means which is disengaged when rotated in the other direction is provided, and the outer cylinder and the female screw member are engaged with each other between the outer cylinder and the female screw member at a position where the outer cylinder or the female screw member is slid in the axial direction. The medical connecting member according to claim 1, further comprising a fourth engaging means capable of being provided.