JP2001289208A - Length adjusting device, and length adjusting device for medical instrument - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify structure and to reduce a manufacturing cost while improving operability in a length adjusting device at an expansion part of a medical instruments or the like. SOLUTION: This length adjusting device (such as an instillation stand 1) is provided with a post part 10, a fixture 50, a spiral plate spring 60 and a hook part 11. A base part (unillustrated) is provided at the lower end of the post part 10, and the instillation stand 1 can be moved by a wheel fitted to the lower face of the base part. The post part 10 is constituted by inserting an upper pipe 30 showing an example of a male side member, into a lower pipe 20 showing an example of a female side member. The post part 10 comprising the lower pipe 20 and the upper pipe 30 constitutes a telescoping part S, and the whole length can be steplessly adjusted by appropriately adjusting the insertion quantity of the upper pipe 30 into the lower pipe 20.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a length adjusting device and a length adjusting device for medical equipment.

[0002]

2. Description of the Related Art Some medical devices such as nursing devices, nursing devices, and nursing devices and other devices (hereinafter, also referred to as "medical devices, etc.") have a telescopic unit. . For example, in the drip stand 1D shown in FIG. 7, the support 10d is configured by slidably inserting the upper pipe 30d with respect to the lower pipe 20d, and the support 10d serves as a telescopic portion S. By appropriately adjusting the amount of insertion of the upper pipe 30d into the lower pipe 20d, the overall length of the support 10d can be adjusted steplessly.

By the way, in such a medical device, it is necessary to maintain the elastic portion S at a desired length when used. In order to satisfy such a demand, the present applicant has already proposed an adjusting device (Japanese Patent Publication No. 7-4).
No. 9004). In this adjusting device, a screw body having a screw shaft integrally projecting from the center of a cone having a conical peripheral surface is fixed to the upper end of the male member, and the screw shaft of the screw body is elastically expanded in the circumferential direction. Is screwed with a cylindrical braking member provided with.
An eccentrically rotating cam disk is provided, and by rotating the male member, the cam disk is pressed against the inner peripheral surface of the upper pipe to brake the female member so as not to rotate. At the same time, the male member and the female member are fixed by expanding the braking member on the conical peripheral surface of the cone and pressing the braking member against the inner peripheral surface of the female member.

[0004]

However, the adjusting device requires a cam disk, a screw shaft, a screw body, and the like, has a complicated structure, requires a lot of time for assembling, and increases the manufacturing cost. . Further, when the male member and the female member are fixed, the direction in which the female member is turned is set to one direction, so that the usability is poor depending on the dominant hand of the user. That is, it is set to the right rotation direction and is hard to use for left-handed users, or is set to the left rotation direction and is hard to use for right-handed users.

Further, in the above adjusting device, it is necessary to adjust the length of the expansion and contraction portion and to fix the male member and the female member with both hands, which deteriorates the operability. Moreover,
The operation of giving relative rotational force between the male side member and the female side member may be difficult for an elderly person or a seriously ill patient with a reduced grip force, so that the adjusting device has higher operability. It is eager to be.

Further, in the above adjusting device, since the relative rotation is given between the male member and the female member to fix the two members, it is not always easy to perform the positioning between the two members. . For example, in the drip stand 1D shown in FIG. 7, since the upper pipe 30d has the hook 11d at the upper end, it has a direction around the axis, but when fixing the upper pipe 30d and the lower pipe 20d. In some cases, a positional shift between the two may occur in the rotation direction, and the hook 11d may not be directed in a desired direction.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and a device for adjusting the length of a telescopic part of a medical device, etc., has a simple structure, a low manufacturing cost, and an operation. The purpose is to improve the performance.

[0008]

The length adjusting device according to the first aspect of the present invention uses a female member and a male member inserted into the female member. An adjusting device for adjusting the length of the elastic member to a desired length, the inner peripheral surface of the male member by elastic force in a diameter-reducing direction. The female-side member is provided with a fixture having a clamp body to be crimped to an outer peripheral surface, and a pair of operation sections for releasing the crimp by elastically expanding the clamp body by being operated close to each other. Are arranged on the expansion and contraction section in a state where the movement along the axial direction is substantially restricted. The present invention can be applied to medical devices specifically described below and various devices other than the medical devices. As the latter device, for example, a cane for mountain climbing, a ski pole, and the like are provided, and an elastic portion is provided for the stick, and the fixing device 50 exemplified in each of the above embodiments is provided for the elastic portion. Alternatively, a spiral leaf spring 60 can be applied.

The length adjusting device for medical equipment of the invention according to claim 7 (hereinafter also referred to as "adjusting device", and also referred to as "adjusting device" together) comprises a female member and the female member. An adjusting device for adjusting the length of the elastic portion to a desired length, the elastic device being configured by using the male side member inserted into the side member and having a length adjustable. A clamp body that presses the inner peripheral surface to the outer peripheral surface of the male member by elastic force, and a pair of operation units that release the crimp by operating the proximity of each other to elastically expand the diameter of the clamp body. And a fixing device provided with the female member on the expansion and contraction portion while substantially restricting the movement of the female member along the axial direction. Claim 9: The "medical device"
A medical traveling vehicle (for example, a wheelchair, a wheelchair, a medical stand (for example, a drip stand, a desk lamp attached to a medical bed, or the like), etc.)
In addition to a walking stick or a walker used for the purpose of restoring the walking function) and a medical stick (for example, a crutch, a walking stick used by the elderly and the physically handicapped, etc.) exemplified in claim 11, Medical chairs (for example, bathing chairs, defecation chairs, etc.), medical beds, serving tables, trolleys, moving beds, etc. The medical treatment according to claims 7 to 12 can be exemplified. “Equipment” refers not only to equipment used purely in hospitals and clinics (eg, osteopaths), but also to various types of equipment used in daily life, such as nursing equipment, nursing equipment, and nursing equipment. Medical equipment is included.

In this adjusting device, when the pair of operating parts are operated close to each other, the constraint applied from the clamp body to the male member is released. Therefore, the male member is relatively moved with respect to the female member, the relative insertion amount of the male member with respect to the female member is adjusted, and the length of the elastic portion is adjusted. Then, when the operation of the pair of operation units is stopped when the length of the expansion and contraction unit reaches the desired length, the clamp body is crimped to the male member. At the same time, since the movement of the fixing member along the axial direction of the female member is substantially restricted, the male member and the female member are fixed to each other via the fixing member.

As described above, since the adjusting device of the present invention is constituted by a clamp body having a simple structure as a main portion, the structure of the adjusting device can be simplified and the labor for assembling can be reduced. The manufacturing cost of the adjusting device can be reduced.

Further, since the present adjusting device can be operated by a simple proximity operation given to a pair of operating portions, the operability is excellent and the same operability can be obtained regardless of the dominant hand of the operator. Furthermore, the operation is easy not only for healthy persons, but also for elderly persons with reduced grip strength, severely ill patients, persons with limited hand, persons wearing gloves, and the like. Also, since there is no need to provide relative rotation between the male member and the female member,
It is easy to perform positioning between both members.

Here, the structure of the "fixing device" of the present invention is not particularly limited. For example, (1) one end of a substantially band-shaped leaf spring;
The other end is made to meet at a predetermined mating portion to form a ring portion. Then, the "one end" drawn from the right rotation direction with respect to the joining portion is further positioned in the right rotation direction than the joining portion, and the "other end" drawn from the left rotation direction with respect to the joining portion. It is located further in the left-hand rotation direction than the fitting section, and knobs (operation sections) are provided at one end and the other end, respectively.
Then, when the two knobs are gripped and brought close to each other, the ring portion elastically expands in diameter, and when this operation is stopped, the fixing device in which the ring portion elastically reduces in diameter can be exemplified. Also, (2) like a clothespin,
A pair of grip portions each having a gripping surface such as a substantially semicircular shape, and each handle portion integrated with each grip portion, the two grip portions are operated close to each other, and the male member is A fixing tool of a sandwiching type can also be exemplified.

In the fixtures of the above (1) and (2), the ring portion and the grip portion independently constitute a clamp body portion, and the inner peripheral surface of the ring portion and the like is formed on the outer peripheral surface of the male member. You may crimp directly. However, it is more preferable to mount an elastic crimping portion made of rubber or the like inside the ring portion or the gripping portion, and to configure the clamp body with the ring portion, the gripping portion, and the elastic crimping portion. According to this aspect, since the inner peripheral surface of the clamp body is constituted by the inner peripheral surface of the elastic crimping portion, the frictional resistance between the clamp body and the male member is increased, and the male member of the clamp body is formed. This is because it is possible to more reliably perform the press-fixing with respect to. The male member may have various shapes other than a substantially circular cross section, for example, a polygonal shape such as a substantially elliptical cross section, a substantially triangular cross section, and a rectangular cross section. At this time, if the crimping portion for the male side member is made of a member that can be easily elastically deformed, such as the above-mentioned elastic crimping portion, it is possible to accurately crimp the male side member having various shapes.

Further, in the present invention, the movement of the "fixing tool" along the axial direction of the female member is substantially restricted, but various methods can be selected. For example, the fixing tool may be locked or fixed to the female member, or the fixing tool may be provided integrally with the female member. The “substantially restricted state” means “the state in which the movement of the fixing member along the axial direction of the female member is completely restricted”.
This does not mean only, but also includes "the movement of the female member along the axial direction of the female member is restricted with a slight crack."

According to a second aspect of the present invention, in the adjusting device according to the first aspect, the female member and the female member are arranged such that a spiral leaf spring that generates a biasing force in a winding direction can be pulled out in an axial direction of a telescopic portion. While being interposed between the side members,
When the expandable portion is expanded, the spiral leaf spring is in the entangled state, and when the expandable portion is contracted, the spiral leaf spring is in the drawn out state. "

According to the second aspect of the present invention, since the expansion and contraction portion can be extended by the urging force of the spiral leaf spring,
The operability of the adjusting device is further improved. For example, if the user performs a proximity operation on the pair of operation units and releases the crimp of the clamp body, the expansion and contraction unit is automatically extended by the urging force of the spiral leaf spring.

In the first aspect of the present invention, another mode of urging means such as a "coil spring" may be interposed between the female members. But,
With a coil spring, it is difficult not only to make the amount of expansion and contraction along the axial direction sufficient, but also to reduce the axial length in the compressed state. It is difficult to make the expanded width sufficient. On the other hand, when the spiral leaf spring according to the second aspect of the present invention is used, not only the amount of expansion and contraction along the axial direction can be made sufficient, but also the axial length in the compressed state can be easily reduced. There is an advantage that the expansion and contraction width along the axial direction of the expansion and contraction portion can be made sufficient.

According to a sixth aspect of the present invention, there is provided a medical device comprising a female member and a male member inserted into the female member, and having a telescopic portion capable of adjusting the length. An adjusting device for setting the extendable portion to a desired length, wherein the female side member and the female side member are in a state in which a spiral leaf spring that generates an urging force in a winding direction can be pulled out in the axial direction of the extendable portion. And the spiral leaf spring is in a wrapped state when the expandable portion is extended,
The spiral leaf spring is in a drawn-out state when the expandable portion is contracted.

According to the sixth aspect of the present invention, the expansion and contraction portion can be extended by the urging force of the spiral leaf spring as in the second aspect, so that not only the operability of the adjusting device is further improved, but also the expansion and contraction can be achieved. The width of expansion and contraction along the axial direction of the portion can be made sufficient.

[0021]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on specific embodiments. Embodiment 1 First, a description will be given below with reference to FIGS. As shown in FIG. 1, the drip stand 1 according to this embodiment includes a column 10, a fixture 50, a spiral leaf spring 60, and a hook 11. A base (not shown) is provided at the lower end of the support 10, and the drip stand 1 is movable by wheels attached to the lower surface of the base.

The column 10 is constructed by inserting an upper pipe 30 exemplifying a male member into a lower pipe 20 exemplifying a female member. In other words, the column 10 composed of the lower pipe 20 and the upper pipe 30 constitutes a telescoping part S, and the overall length thereof is steplessly adjusted by appropriately adjusting the insertion amount of the upper pipe 30 into the lower pipe 20. It is adjustable.

In the present embodiment, the expansion and contraction portion S is constituted by using two pipes. However, the expansion and contraction portion of each invention of the present invention is constituted by using three or more pipes or a male member. It may be a solid rod or the like. Further, in this example, the mode in which the male member is disposed above and the female member is disposed below is illustrated, but the expansion and contraction portion of each of the present invention is disposed above the male member disposed below. It is also possible to use a female member, a male member and a female member disposed above and below the male member, or a female member and a male member disposed above and below the male member. .

As shown in FIGS. 2 and 3, the fixture 50 includes a clamp body 51 and a pair of operating portions 52 projecting from the outer peripheral surface of the clamp body 51. Of these, the clamp body 51 is
And an elastic crimping portion 54 fitted into the ring portion 53. The ring portion 53 has a ring shape in which the one end 5A and the other end 5B of the substantially band-shaped leaf spring meet at the joining portion 5C. Further, the one end 5D drawn in the clockwise direction with respect to the joining portion 5C is positioned further in the clockwise direction of the joining portion 5C, and the other end 5E drawn in the counterclockwise direction with respect to the joining portion 5C. Are located further in the counterclockwise rotation direction of the aligning portion 5C. An operation unit 52 is provided at one end 5D and the other end 5E.

The elastic crimping portion (rubber or the like) 54 is
It has a substantially ring shape when adhered and fixed inside. However,
A cutout 55 is provided in the elastic crimping portion (rubber or the like) along the thickness direction so that the elastic crimping portion 54 is smoothly elastically deformed integrally with the ring portion 53 and is divided into two. The fixture 50 is fitted over the upper pipe 30 while pressing the inner peripheral surface of the elastic crimping portion 54 against the outer peripheral surface of the upper pipe 30. At this time, since the elastic force is generated in the ring portion 53 and the elastic crimping portion 54 along the diameter reducing direction, the crimping of the fixing tool 50 is performed firmly. In the present invention, unlike the present embodiment, the use of the elastic crimping portion 54 may be omitted, and the inner peripheral surface of the ring portion 53 may be directly crimped to the outer peripheral surface of the upper pipe 30.

As shown in FIGS. 1 and 2, the fixture 50 attached to the upper pipe 30 is
The operation unit 52 is exposed from the side of the lower pipe 20 by being exposed through the opening 21 that opens on the outer peripheral surface of the outer pipe 0. Further, since the fixing tool 50 is inserted while maintaining a slight clearance with respect to the opening 21,
When the fixing device 50 attempts to move along the axial direction of the lower pipe 20, the side surface of the fixing device 50 contacts the edge of the opening 21 and the movement is restricted.

That is, in this example, the opening 21 functions as an operation port for operating the fixture 50 and the fixture 5
It will have a function as a restriction means for restricting the movement of zero. In addition, in each of the present inventions, unlike the present example, for example, a locking portion provided on the fixing tool 50 is locked to the lower pipe 20, or the fixing tool 50 is screwed to the lower pipe 20 and bonded. Fixation by the method of
Can be integrally formed with the lower pipe 20.

The spiral leaf spring 60 generates a biasing force in the winding direction. As shown in FIG. 2, the drawn-out end 61 is fixed to the outer peripheral surface of the upper pipe 30 by a fitting 62, and the winding portion 63 is formed. Is exposed through the mounting hole 23 of the lower pipe 20. Further, the center of the winding of the winding portion 63 is supported by the support 6 fixed to the lower pipe 20.
5 is supported by the shaft 66. In this example,
The winding part 63 exposed from the lower pipe 20 can be concealed by a cover body or the like, and the design of the drip stand 1 can be improved.

In the spiral leaf spring 60, as shown in FIG. 4, when the upper pipe 30 is pulled down, the winding amount of the winding portion 63 becomes small (the drawing amount becomes large),
This is a state in which an urging force for increasing the amount of entrainment of the entrainment portion 63 is generated, that is, an “energized state”. On the other hand, as shown in FIG. 2, when the upper pipe 30 is pulled up, the spiral leaf spring 60 is in a state where the winding amount of the winding part 63 is increased, that is, in the “original state”.

Next, an example of use of the present drip stand 1 will be described. First, as shown in FIG. 4, when the upper pipe 30 is pulled down, the upper pipe 30 is in a state of receiving the urging force of the spiral leaf spring 60. However, since the fixture 50 is externally fitted and pressed against the upper pipe 30 and is in contact with the opening 21 to restrict the movement of the upper pipe 30 in the axial direction, the upper pipe 30 can be reliably pulled down. maintain.

On the other hand, a pair of operation parts 52 are picked up by hand, and FIG.
As shown in (a) and (b), when the diameter of the clamp body 51 is increased, the crimping between the fixture 50 and the upper pipe 30 is released, and the upper pipe 30 can move up and down. For this reason, the upper pipe 30 is raised using the urging force of the spiral leaf spring 60. Then, when the hands are released from the pair of operation sections 52, the fixing tool 50 is pressed again to the upper pipe 30, and the upper pipe 30 and the lower pipe 20 are fixed (see FIG. 2). At this time, the spiral leaf spring 60
The upper pipe 30 can be raised to the top dead center by fully using the biasing force of the above, but when the upper pipe 30 reaches an arbitrary position between the top dead center and the bottom dead center, the operation unit 52
By further releasing the hand, the length of the column 10 can be adjusted almost steplessly.

Further, when shortening the lengthened support portion 10, the pair of operation portions 52 are gripped by hand, the crimp between the fixture 50 and the upper pipe 30 is released, and the upper pipe 30 is swirled. What is necessary is just to pull down, opposing the urging force of the spring 60.

As described above, since the adjusting device of this embodiment is configured using the fixing tool 50 whose main part is the simple clamp body 51, the structure of the adjusting device is simplified and the assembling work is troublesome. And the manufacturing cost can be reduced. In addition, when adjusting the length of the support portion 10, it is not necessary to provide a relative rotation between the upper pipe 30 and the lower pipe 20, so that the positioning of the upper pipe 30 and the lower pipe 20 is univocal. Is made. It is also possible to change the direction of the hook portion 11 by grasping both operation portions 52 by hand and rotating the upper pipe 30 around its axis.

Further, since the operation performed by the user or the like at the time of the length adjustment is only the proximity operation applied to the pair of operation units 52, the operability of the adjustment device is high. Therefore, even a weak person such as an elderly person or a seriously ill patient who has a low grip strength can easily operate with one hand, and the same operability can be obtained regardless of the dominant hand of the operator or the like. Further, since the urging force of the spiral leaf spring 60 is used when extending the support portion 10, it is not necessary for the user or the like to push the upper pipe 30 upward by itself. Therefore, even for an elderly person with a bent back, a seriously ill patient, a short person, and the like, the operation of extending and retracting the column 10 is easy.

In the "spiral leaf spring 60" used in the present embodiment, the axis length becomes shorter in the "original state" shown in FIG. 2, and the axis length becomes longer in the "biased state" shown in FIG. That is, the expansion / contraction width between the “original state” and the “energized state”
It can be made larger than other urging means such as a coil spring, and the expansion and contraction width of the expansion and contraction portion S can be made larger. Therefore, according to the present example, a single drip stand 1 can be used as various drip stands 1 in which the lengths of the columns 10 are greatly different.

Embodiment 2 Another embodiment will be described with reference to FIG. In this embodiment, a wheelchair 8 is illustrated as an example of a “medical traveling vehicle”. In the wheelchair 8, a footrest portion 81 is rotatably supported on the front side of the wheelchair body 80. That is, the footrest portion 81 includes movable arm portions 82 that are integrally driven in the left and right directions.
Of the wheelchair main body 80 is rotatably supported by a hinge 84 on a portion located at substantially the same height as the seating portion 83 on the front side surface of the wheelchair main body 80. The seat portion 83 is where the user's hips of the wheelchair 8 are placed.

In the present embodiment, an adjusting device is interposed between an intermediate portion E of each movable arm portion 82 along the axial direction and a lower portion B on the front side surface of the wheelchair main body 80. That is, this adjusting device is a pipe-shaped female member 20.
a and a substantially rod-shaped or pipe-shaped male member 30a inserted through the female member 20a. And
One end of the male member 30a protrudes from one opening K of the female member 20a, and the protruding end is rotatably supported by the hinge 85 with respect to the "intermediate portion E". I have. The female member 20a is rotatably supported by the hinge 86 with respect to the "lower site B".

In this embodiment, the female member 20a and the male member 30a constitute a specific example of the "expandable portion (expandable portion) S" of the fourth aspect of the present invention. That is, the male member 3
At 0a, by adjusting the amount of protrusion of the female member 20a from the opening K, the length of the elastic portion S of this example is adjusted. Also, the fixing device 50 and the spiral leaf spring 60 similar to those of the first embodiment are arranged on the expansion / contraction portion S.

Further, as shown by the solid line in the drawing, the spiral plate spring 60 of the present example has a configuration in which the amount of the winding of the winding portion 63 is reduced when the male member 30a is retracted toward the wheelchair body 80 and is at the rear dead center. It becomes small (the amount of withdrawal is large) and becomes in the energized state. On the other hand, as shown by the two-dot chain line in the drawing, the male member 3
When 0a advances forward of the wheelchair main body 80 and is at the front dead center, the amount of winding of the winding portion 63 increases and the original state is established. In the present embodiment, an example is shown in which the telescopic portion S is provided for each of the pair of left and right movable arms 82 of the footrest portion 81. However, only one of the movable arm portions 82 has the telescopic portion S. May be provided.

Next, an example of use of the wheelchair 8 will be described. First,
When the user uses the wheelchair 8 with the legs lowered, the male side member 30a is retracted toward the wheelchair main body 80 as shown by the solid line in FIG. The state is set to be close to the main body 80.

On the other hand, when the user uses the wheelchair 8 with the legs raised, the pair of operation units 52 are grasped by hand,
The crimping between the fixture 50 and the male member 30a is released.
As a result, the male member 30a can be moved back and forth, and the urging force of the spiral leaf spring 60 causes the wheelchair body 80 to move.
To move forward. At this time, since the protruding end of the male-side member 30a is integrated with the footrest portion 81, the footrest portion 81 rotates upward about the hinge 84 as a rotation center, and the inclination angle is reduced. Then, when the hands are released from the pair of operation sections 52, the fixing tool 50 is again moved to the male member 30.
a to fix the male member 30a and the female member 20a. In this example, the male member 30a can be advanced to the front dead center by using the biasing force of the spiral leaf spring 60 as much as possible. When you reach any position between
If the hands are released from both operation parts 52, the inclination angle of the footrest part 81 can be adjusted almost steplessly.

As described above, also in this embodiment, since the adjusting device having a simple structure is used, the wheelchair 8 having the reclining mechanism in the footrest portion 81 can be obtained at low cost. In addition, when the length of the elastic portion S is adjusted, the operation performed by the user or the like on the fixing device 50 is only the proximity operation applied to the pair of operation portions 52, and therefore, even by the user sitting on the wheelchair 8, It can be easily operated with one hand. Further, also in this example, since the "spiral leaf spring 60" is used, the expansion and contraction width of the expansion and contraction portion S can be increased. Therefore, a single wheelchair 8
Thereby, various wheelchairs 8 in which the inclination angles of the footrest portions 81 are greatly different can be obtained.

In this embodiment, a specific example in which the invention of claim 4 is applied to the footrest portion 81 of the wheelchair 8 is shown. However, the invention of claim 4 is suitably applied to other parts of the wheelchair 8. can do. For example, the invention of claim 4 is applied between the seating portion 83 and a backrest (not shown),
The reclining operation of the backrest can be facilitated.

The adjusting device described in each of the above embodiments can be applied to a medical wand or the like. For example, the wand main body is formed by connecting a plurality of pipes, and a male pipe (male member) arranged below is inserted into a female pipe (female member) arranged above. When the cane body is constituted by three or more pipes, the "male pipe (female side member) arranged below" refers to the male pipe (male side member) further arranged below. With respect to the member), it functions as a female pipe (female member). And
The fixing device 50 and the spiral leaf spring 60 described in the first and second embodiments are applied to the expansion and contraction portion composed of a pair of upper and lower female pipes (female member) and male pipes (male member). Can be arranged.

It should be noted that the scope of the present invention is not limited to those specifically shown in the above embodiments of the present invention, and various modifications may be made within the scope of the constitution and the objects of the present invention. it can. That is, in each of the above embodiments, the embodiment including both the fixture 50 and the spiral leaf spring 60 has been exemplified. However, in the specific examples according to the first and seventh aspects of the present invention, the use of the spiral leaf spring 60 is stopped. It is possible to use another type of biasing means such as a coil spring, use a power source such as a pneumatic cylinder or a hydraulic cylinder, or provide no biasing means or power source. Claim 6 or Claim 12
In a specific example according to each of the inventions, the fixing tool 50 may be used as the first embodiment.
Alternatively, one not included in the invention of claim 7 may be used.

Further, in each of the above embodiments, the mode in which the operation unit 52 is directly operated by the operator's finger has been exemplified.
Is not limited to this. For example, the terminal of the transmission wire may be connected to the operation unit provided on the clamp body 51, and the operation unit for remote control may be connected to the start end of the transmission wire. More specifically, an operation unit for remote control is arranged at a position separated from the above-described drip stand 1 or at a position separated from the wheelchair 8, and the operator lying on the bed or sitting on the wheelchair 8 May be able to operate the fixture 50 without changing the posture. Further, in the case of a medical wand, if an operation unit for remote control is disposed on a handle provided at the upper end thereof, the user of the wand does not need to bend his / her waist and the fixing tool 5 can be used.
0 operations can be performed.

Further, in each of the above-described embodiments, for example, as shown in FIG. 2, the drawn-out end 61 of the spiral leaf spring 60 is fixed to the male member (upper pipe 30), and the winding portion 63 is connected to the female member (lower member). Although the mode of supporting the pipe 20) is exemplified, in the invention of claim 2 or claim 6, it is also possible to fix the drawer end 61 to the female member and support the winding portion 63 to the male member. For example, a mode in which the male member is formed in a pipe shape and an opening is formed, and the winding portion 63 is inserted into the male member and supported through the opening can be exemplified. According to this aspect, the entangling portion 63 can be hardly exposed to the outside, so that the design of the medical device is improved.

In the present invention, the male member is
A shape other than a substantially circular cross section, for example, a substantially elliptical cross section,
Various shapes such as a polygonal shape such as a substantially triangular cross-sectional shape and a rectangular cross-sectional shape may be employed, and the crimping portion of the clamp body may have a shape in which the outer shape and the concavities and convexities of the male member are inverted. According to this aspect, since the male member is accurately positioned by the clamp body, the positioning between the male member and the female member is further facilitated.

[0049]

As described above, according to the length adjusting device or the length adjusting device for medical equipment of the present invention, the operability can be improved while the structure is simplified, the manufacturing cost is reduced, and the like. . Further, according to the invention of claim 6 or claim 12, a similar adjusting device can be obtained.

[Brief description of the drawings]

FIG. 1 is a perspective view of a main part of a drip stand according to a first embodiment.

FIG. 2 is a longitudinal sectional view of a main part of the drip stand of FIG. 1 (while a spiral leaf spring is in an original state).

FIG. 3A is a side view of a fixing device (in a crimped state), and FIG.
Is a plan view of a fixture (in a crimped state).

FIG. 4 is a longitudinal sectional view of a main part of the drip stand of FIG. 1 (in a state where a spiral leaf spring is biased).

FIG. 5 (a) is a side view of a fixture (operation state), and FIG.
FIG. 3 is a plan view of a fixture (in an operation state).

FIG. 6 is a side view of a main part of the wheelchair according to the second embodiment.

FIG. 7 is a perspective view of a main part of a drip stand according to a conventional example.

[Explanation of symbols]

1; Infusion stand, 10; Prop, 11; Hook,
20; lower pipe (female member); 21; opening; 23;
Mounting hole, 30; upper pipe (male side member), S;
50; fixture, 51; clamp body, 52; operation unit,
53; ring part, 54; elastic crimping part, 5A;
B; other end side, 5C; mating portion, 5D; one end, 5E; other end, 60; spiral leaf spring, 61; draw-out end, 62; fixture, 63; winding portion, 66; shaft portion, 8; 8
0; wheelchair body, 81; footrest section, 82; movable arm section, 83; seating section, 84, 85, 86; hinge,
B: lower part, E: middle part, K: opening.

Claims (12)

[Claims] 1. A telescopic part comprising a female member and a male member inserted into the female member, the telescopic member having a length adjustable, and having a desired length. A length adjusting device, comprising: a clamp body that presses an inner peripheral surface to an outer peripheral surface of the male member by an elastic force in a diameter-reducing direction; and a clamp body that is elastically expanded by being operated close to each other. A fixing device having a pair of operating portions for causing the female member to release the pressure bonding by diametrically disposing the fixing member on the telescopic portion in a state where movement of the female member along the axial direction is substantially restricted. Adjustment device. 2. A method in which a spiral leaf spring generating a biasing force in a winding direction is interposed between the female member and the female member in a state where the spiral spring can be pulled out in the axial direction of the elastic member, and the elastic member is extended. The length adjusting device according to claim 1, wherein the spiral leaf spring is in a retracted state when the spiral spring is retracted, and the spiral leaf spring is in an extended state when the expandable portion is contracted. 3. The length adjusting device according to claim 1, wherein the extendable portion is provided on a support portion of a medical stand. 4. The length adjusting device according to claim 1, wherein the extendable portion is provided on an extendable portion of a medical traveling vehicle. 5. The length adjusting device according to claim 1, wherein the extendable portion is provided on a cane main body of a medical cane. 6. A female-side member and a male-side member inserted into the female-side member and provided with a length-adjustable expansion / contraction portion, wherein the expansion / contraction portion has a desired length. A length adjusting device, wherein a spiral leaf spring that generates an urging force in a winding direction is interposed between the female side member and the female side member in a state where the spiral leaf spring can be pulled out in the axial direction of the expansion / contraction part, and the expansion / contraction part The length adjusting device is characterized in that the spiral leaf spring is in a retracted state when is extended, and the spiral leaf spring is in an extended state when the expandable portion is contracted. 7. A female member having a female member and a male member inserted into the female member, and having a length-adjustable expansion / contraction portion, wherein the expansion / contraction portion has a desired length. A length adjusting device for a medical device, comprising: a clamp main body that presses an inner peripheral surface to an outer peripheral surface of the male-side member by an elastic force in a diameter-reducing direction; A pair of operating portions for elastically expanding the diameter of the female member to release the crimping, and the fixing device is disposed on the expansion and contraction portion while substantially restricting movement of the female member along the axial direction. Length adjustment device for medical equipment. 8. A spiral leaf spring that generates a biasing force in a winding direction is interposed between the female member and the female member so that the spiral spring can be pulled out in the axial direction of the elastic member, and the elastic member is extended. The length adjusting device for a medical device according to claim 7, wherein the spiral leaf spring is in a retracted state when the spiral spring is retracted, and the spiral leaf spring is in an extended state when the expandable portion is contracted. 9. The length adjusting device for a medical device according to claim 7, wherein the extendable portion is provided on a support portion of a medical stand. 10. The length adjusting device for medical equipment according to claim 7, wherein the extendable portion is provided on an extendable portion of a traveling vehicle for medical use. 11. The length adjusting device for a medical device according to claim 7, wherein the extendable portion is provided on a cane main body of the medical cane. 12. A telescopic part comprising a female member and a male member inserted into the female member, the telescopic member having a length adjustable, and having a desired length. A length adjusting device for a medical device, wherein a spiral leaf spring that generates a biasing force in a winding direction is interposed between the female member and the female member in a state where the spiral leaf spring can be pulled out in an axial direction of a telescopic part. The length adjusting device for a medical device, wherein the spiral leaf spring is in a wrapped state when the elastic part is extended, and the spiral leaf spring is in an extended state when the elastic part is contracted.