CN110507470B

CN110507470B - Motion retarding device

Info

Publication number: CN110507470B
Application number: CN201910887305.1A
Authority: CN
Inventors: 潘新芳
Original assignee: Second Affiliated Hospital of Soochow University
Current assignee: Second Affiliated Hospital of Soochow University
Priority date: 2019-09-19
Filing date: 2019-09-19
Publication date: 2024-03-12
Anticipated expiration: 2039-09-19
Also published as: CN110507470A

Abstract

A motion retarding apparatus includes a first support, a first restraint, a second support, a second restraint, a first restraint and a second restraint. The first support piece is provided with a first pivot shaft, the second support piece is provided with a second pivot shaft, and the second pivot shaft and the first pivot shaft are relatively fixed in a pivotable manner, so that the second support piece can pivot relative to the first support piece. The first limiting piece is arranged at one end of the first supporting piece and rigidly fixed with the first supporting piece. The second limiting piece is arranged at one end of the second supporting piece and rigidly fixed with the second supporting piece. The first and second stoppers are configured to pivot the first support within a predetermined angle relative to the second support.

Description

Motion retarding device

Technical Field

The present invention relates to a motion retarding device. In particular, the present invention relates to a device for impeding elbow joint movement.

Background

In clinical practice, there is a need for catheters for use with some patients, such as endotracheal tubes, jejunal feeding tubes, deep vein catheters, and the like. When a patient suffers from cognitive impairment or sleep, the patient can reject the uncomfortable feeling such as foreign body sensation caused by the insertion of the catheter, and the upper limb often pulls the catheter. In addition to the enormous risks of interruption of treatment, support, etc. caused by accidental removal of the catheter, repositioning catheters may present problems of difficult placement, secondary injury, etc.

Based on this, the catheter is usually prevented from being pulled by means of a fixed body. As shown in fig. 1, a bed 100 for carrying a patient has guardrails 102 on both sides thereof. When the patient is lying on the bed 100, the end of his upper limb 104 adjacent to the guard rail 102 is secured to the guard rail 102 by the tie down device 106. The tie down device 106 is typically a tie down strap. Thus, when a catheter is placed in a patient's head, e.g., in the oral cavity, nasal cavity, the upper limb 104 is immobilized from movement, and cannot reach or pull the catheter.

However, since the patient's left and right upper limbs 104 are fixed, the whole body cannot move up and down or left and right relative to the bed 100, nor can it turn over relative to its own axis, so that the whole body position cannot be adjusted and moderate limb movements are performed, and the patient is in a nearly completely stationary state, and the pain is great.

Disclosure of Invention

According to an embodiment of the present invention, there is provided a motion retarding apparatus including:

the first support piece and the first binding piece are arranged on the first support piece; the first support piece is provided with a first pivot shaft;

the second supporting piece and the second binding piece are arranged on the second supporting piece; the second support piece is provided with a second pivot shaft which is pivotally and relatively fixed with the first pivot shaft so that the second support piece can pivot relative to the first support piece;

the first limiting piece is arranged at one end of the first supporting piece and rigidly fixed with the first supporting piece; and

the second limiting piece is arranged at one end of the second supporting piece and rigidly fixed with the second supporting piece;

wherein the first limit and the second limit are configured to pivot the first support within a predetermined angle relative to the second support.

In some embodiments, the predetermined angle is an obtuse angle.

In some embodiments, the first support is semi-cylindrical and has a semi-circular end surface, and the second support is semi-cylindrical and has a semi-circular end surface.

In some embodiments, the first support has a first pivot shaft at each of two arcuate ends of the semicircular cylindrical surface at one end thereof, and the second support has a second pivot shaft at each of two arcuate ends of the semicircular cylindrical surface at one end thereof, each first pivot shaft being pivotally secured relative to a corresponding second pivot shaft, respectively.

In some embodiments, the first and second stoppers approach each other to interfere with each other to hinder the first support from pivoting relative to the second support when the first support pivots relative to the second support to make the angle between the first and second supports smaller.

In some embodiments:

the first limiting piece is arranged at one end of the first supporting piece adjacent to the second supporting piece and is provided with an opening;

the second limiting piece is arranged at one end of the second supporting piece adjacent to the first supporting piece and penetrates through the opening of the first limiting piece.

In some embodiments, the opening of the first stop is configured in one of the following shapes: rectangular, square, oval, parallelogram.

In some embodiments:

the first stopper forms a first stopper portion through the opening, the first stopper portion having a first dimension perpendicular to a pivoting direction thereof when the first support is pivotally fixed relative to the second support;

the second stopper has a second stopper portion which is opposite to the first stopper portion in a pivoting direction thereof and has a second dimension perpendicular to the pivoting direction thereof when the first support member is pivotally fixed with respect to the second support member; and

the second dimension is greater than the first dimension.

In some embodiments, the first limiting member is a first bend provided at one end of the first support member with respect to the first support member, and the first bend is configured to interfere with the second limiting member to prevent the first support member from pivoting with respect to the second support member.

In some embodiments, the second limiting member is a second bend provided at one end of the second supporting member; the first bend and the second bend are configured to interfere with each other to inhibit the first support from pivoting relative to the second support.

In some embodiments, the first bend and the second bend each have a cross-section configured as one of: l-shaped, arc-shaped, semicircular and spiral.

In some embodiments, the motion retarding apparatus further comprises an engagement member pivotally secured relative to the first and second support members and having a third stop member adjacent the first stop member of the first support member and a fourth stop member adjacent the second stop member of the second support member; wherein when the first support is pivoted relative to the second support such that the angle formed by the first support and the second support is reduced:

the first limiting piece and the third limiting piece are close to each other and mutually contradict each other; and/or

The second limiting piece and the fourth limiting piece are close to each other and mutually contradict each other;

to hinder pivoting of the first support relative to the second support.

In some embodiments:

one of the first and third stoppers has a first stop portion, the other has a second stop portion disposed through the opening;

the first stop portion having a first dimension perpendicular to its pivoting direction when the first support is pivotally secured relative to the second support, the second stop portion being opposite the first stop portion in its pivoting direction and having a second dimension perpendicular to its pivoting direction; and

the second dimension is greater than the first dimension.

In some embodiments, one of the second and fourth stoppers is a first fold relative to the second support and/or the engagement member in which it is located, the first fold being configured to interfere with the other of the second and fourth stoppers to inhibit the first support from pivoting relative to the second support.

In some embodiments, the other of the second and fourth stop is a second fold relative to the second support and/or the engagement member in which it is located, the first fold and the second fold being configured to interfere with each other to inhibit pivoting of the first support relative to the second support.

In some embodiments, the motion retarding device further comprises a retarding member having a first end secured to the first support member and a second end secured to the second support member, the retarding member configured to generate a reverse retarding force to resist pivoting in the direction when the first support member is pivoted relative to the second support member to reduce the angle formed by the first and second support members.

In some embodiments, the blocking member is a spring or an elastic webbing.

Drawings

Further details, aspects and embodiments of the invention will be described, by way of example only, with reference to the accompanying drawings. Elements in the figures are illustrated for simplicity and clarity and have not necessarily been drawn to scale. In the drawings, elements corresponding to elements already described may have the same reference numerals.

FIG. 1 is a schematic diagram of a prior art patient restraint.

Fig. 2 is a side view of a motion retarding device according to a first embodiment of the present invention.

Fig. 3 is an exploded perspective view of a motion retarding device according to a second embodiment.

Fig. 4 is an enlarged view of the first and second stoppers in fig. 3.

Fig. 5 is a schematic structural view of a motion blocking device according to a third embodiment of the present invention.

Fig. 6 is a schematic structural view of a motion blocking device according to a fourth embodiment of the present invention.

Fig. 7 is a schematic view of a structure of a motion blocking device according to a fifth embodiment of the present invention.

Fig. 8 is a combined side view of the motion retarding device of fig. 7 after assembly.

Fig. 9 is a schematic structural view of a motion blocking device according to a sixth embodiment of the present invention.

Fig. 10 is a schematic structural view of a motion blocking device according to a seventh embodiment of the present invention.

Fig. 11 is a schematic view of an example of the engagement member of fig. 10.

Fig. 12 is a schematic view of a structure of a motion blocking device according to an eighth embodiment of the present invention.

Detailed Description

As shown in fig. 2, a side view of a motion retarding device 200 in accordance with a first embodiment of the present invention. The motion retarding device 200 includes a first support 202, a second support 204. The first support 202 and the second support 204 are both bar-shaped plate structures. A first pivot shaft 206 is provided at one end of the first support 202 and a second pivot shaft 208 is provided at one end of the second support 204, the first pivot shaft 206 and the second pivot shaft 208 being pivotally secured relative to each other such that the first support 202 and the second support 204 may pivot relative to each other. Referring to fig. 2, the first support 202 is used as a reference, and the second support 204 may pivot in the first pivot direction 210 to make the angle between the second support and the first support 202 smaller, or pivot in the second pivot direction 212 to make the angle between the second support and the first support 202 larger.

The motion retarding device 200 includes a first stop 214 and a second stop 216. The first stopper 214 is provided at an end of the first support 202 adjacent to the second support 204, and is rigidly fixed to the first support 202. The second stopper is disposed at an end of the second support 204 adjacent to the first support 202 and rigidly fixed to the second support 204. Although the first stop 214 is shown in fig. 2 as being disposed at an angle relative to the first support 202 and the second stop 216 relative to the second support 204, in other embodiments, the angle may be greater or lesser, up to zero. In alternative other embodiments, the first stop 214 may be integrally formed with the first support 202 or be part of the first support 202; the second stop 216 may be integrally formed with the second support 204 or be part of the second support 204. As previously described, since the first and second stoppers 214, 216 are rigidly fixed relative to the first and second supports 202, 204, respectively, with reference to the first support 202, as the second support 204 pivots in the pivot direction 210, the first and second stoppers 214, 216 gradually approach each other until the first and second stoppers 214, 216 interfere with each other at a position 218 shown in phantom in fig. 2 to hinder further pivoting between the second support 204 and the first support 202 in the pivot direction 210.

The first support 202 is provided with a first binding member 220, and the first binding member 220 may be an elastic fabric, one end of which is fixed to the first support 202, and the other free end of which is configured to be fixed to the first support 202 after winding the bound object, thereby fixing the bound object to the first support 202. The second support 204 is provided with a second binding member 222, and the second binding member 222 may be an elastic fabric, one end of which is fixed to the second support 204, and the other free end of which is configured to be fixed to the second support 204 after winding the bound object, thereby fixing the bound object to the second support 202. In use, the first and second supports 202, 204 of the motion retarder 200 may be adapted to be secured to the upper and forearm of a patient's upper limb using the first and second tethers 220, 222, respectively, such that the patient's elbow is positioned and engaged with the first and second pivot axes 206, 208 of the motion retarder 200 in a position where the upper and forearm supports are pivotally secured, and such that the pivoting between the upper and forearm supports is guided and constrained by the first and second supports 202, 204 being pivoted relative to each other.

As previously described, with reference to the first support 202, when the second support 204 is pivoted to the position 218, the second support 204 will not be able to pivot further to reduce its angulation with the first support 202 due to interference between the first and second stoppers 214, 216. In the aforementioned application of the motion retarder 200, the pivot angle between the tethered upper arm and forearm will not be reduced further accordingly. In the present embodiment, the first and second stoppers 214 and 216 abut against each other so that the minimum angle formed between the first and second supports 202 and 204 is 90 degrees. In other embodiments, the minimum angle of the first and second support members 202, 204 may be set to other larger or smaller angles, only to ensure that the hand at the distal end of the forearm cannot reach the face and pull the catheter placed through the facial organ. In the other direction, as the first and second supports 202, 204 are fixed relative to the upper and forearm by the first and second tethers 220, 222, respectively, the motion characteristics of the elbow joint will naturally constrain relative pivoting of the first and second supports 202, 204 in the increasing angular direction up to a maximum angle of about 180 degrees. Thus, in the present embodiment, the first support 202 and the second support 204 can pivot relative to each other within a predetermined angle, which is an obtuse angle.

Fig. 3 shows an exploded perspective view of a motion retarding device 300 according to a second embodiment. The motion retarding apparatus 300 is similar to the motion retarding apparatus 200 shown in fig. 2, including first and second supports 302, 304, first and second pivot axes 306, 308, first and second pluralities of tie downs 320, 322, first and second stoppers 314, 316, etc., which are similar to corresponding components in fig. 2, and are not repeated herein. In this embodiment, although the first and second supports 302, 304 are configured in a bar shape, only a frame along the outline of the periphery of the bar shape is provided, the first and second supports 302, 304 of the frame-shaped structure enable saving of materials and enabling a better degree of freedom of adjustment of the bound object bound by the first and second binding members 320, 322 inside the frame.

In the embodiment shown in fig. 3, the first stopper 314 is provided at an end of the first support 302 adjacent to the second support 304, and is rigidly fixed to the first support 302. The second stopper 316 is provided at an end of the second support 304 adjacent to the first support 302, and is rigidly fixed to the second support 304. The first stop 314 has an opening 324 for the second stop 316 to be disposed through the opening 324 when the first support 302 and the second support 304 are assembled together and the first pivot shaft 306 and the second pivot shaft 308 are pivotally secured relative to each other via a path shown by a dashed line 326 in fig. 3. After assembly, the first stop 314 can pivot in a first pivot direction 328 about the first pivot axis 306 and the second stop 326 can pivot in a second pivot direction 330 about the second pivot axis 308. It will be appreciated that the first pivot direction 328 is generally perpendicular to the face of the first stop 314 and the second pivot direction 330 is generally perpendicular to the face of the second stop 316.

Fig. 4 shows an enlarged view of the first and second stoppers 314 and 316 of fig. 3. The opening 324 of the first stop 314 has a first dimension 332 and a second dimension 334, respectively, in mutually orthogonal directions on a plane perpendicular to its first pivot direction 328. Similarly, the second stop 316 has a third dimension 336 and a fourth dimension 338, respectively, in mutually orthogonal directions on a plane perpendicular to its second pivot direction 330. As previously described, the second stop 316 is disposed through the opening 324 of the first stop 314, for which purpose, in the embodiment shown in fig. 4, the second dimension 334 is greater than the fourth dimension 338, such that the second stop 316 can be inserted through the opening of the first stop 314.

The first stop 314 forms a first stop portion 340 through the opening 324 on the opposite side of the first pivot axis 306 from the first dimension 332, the first stop portion 340 having the first dimension 332 perpendicular to the first pivot direction 328. The second stop 316 has a second stop portion 342 on the opposite side of the second pivot axis 308 in the direction of the third dimension 336, the second stop portion 342 having the third dimension 336 perpendicular to the second pivot direction 330. The first dimension 332 of the first stop portion 340 is less than the third dimension 336 of the second stop portion 342. Thus, when the first and second supports 302, 304 are pivoted relative to each other such that the first and second limits 314, 316 are in proximity to each other, the first stop portion 340 having the smaller first dimension 332 will oppose the second stop portion 342 having the larger third dimension 336 such that the first stop portion 340 will block the second stop portion 342, thereby blocking further pivoting of the second and second limits 316, 304 relative to the first and second limits 314, 302.

Although the embodiments of fig. 3, 4 show the openings 324 of the first stop 314, the second stop 316 having a rectangular configuration, it should be understood that in other embodiments the openings 324 of the first stop 314 and the second stop 316 may also be configured in other available shapes, such as oval, square, parallelogram, etc., such that the dimension of the openings 324 of the first stop 314 at least in a certain direction perpendicular to the pivoting direction is larger than the dimension of the second stop 316 in that direction when in contact with the first stop 314, such that the second stop 316 can pass through the openings 324 to enable the second pivot shaft 308 to be pivotally secured relative to the first pivot shaft 306, and such that upon mutual pivoting, the dimension of a portion of the second stop 316 in that direction perpendicular to the pivoting direction is larger than the dimension of a portion of the first stop 314 that can be opposed to that portion via pivoting, such that the second stop 316 has a larger dimension than the first stop 314. For example, when the opening 324 is configured as a square, the second stop 316 may be rectangular with a width that is less than a side length of the square of the opening 324 to enable the second stop 316 to pass through the opening 324, and a length that is greater than a side length of the square of the opening 324 to enable the sides of the opening 324 to create a stop against the second stop 316.

Fig. 5 is a schematic view showing a structure of a motion retarder 500 according to a third embodiment of the present invention. Similar to the motion retarding devices 200, 300 of the embodiment shown in fig. 2, 3, the motion retarding device 500 includes first and second supports 502, 504, first and second pivot shafts 506, 508, first and second stoppers 514, 516, first and second tethers 520, 522, etc., which are similar to the corresponding components of fig. 2, 3 and will not be repeated here.

In the embodiment of fig. 5, the first support 502 and the second support 504 are each semi-cylindrical, having semi-circular end surfaces. The first pivot shafts 506 are disposed at the arc ends of both sides of the semicircular cylindrical surface of one end of the first support 502, and similarly, the second pivot shafts 508 are also disposed at the arc ends of both sides of the semicircular cylindrical surface of one end of the second support 504, so that two first pivot shafts 506 are respectively and pivotally relatively fixed with corresponding one of the second pivot shafts 508 to enable the first support 502 and the second support 504 to relatively pivot.

As shown in fig. 5, the first stopper 514 provided at an end of the first support 502 adjacent to the second support 504 has an opening 524, the opening 524 including a first head 544 and a first neck 546; the second stopper 516 provided at an end of the second support 504 adjacent to the first support 502 includes a second head 548 and a second neck 550. As previously described, the first dimension 552 of the first head portion 544 of the opening 524 in the circumferential direction is greater than the second dimension 554 of the second head portion 548 of the second stopper 516 in the circumferential direction and the third dimension 556 of the second neck portion 550 in the circumferential direction, such that the second head portion 548 of the second stopper 516 can be disposed through the first head portion 544 of the opening 524 during assembly. Further, after the first pivot shaft 506 and the second pivot shaft 508 are pivotally fixed to each other, when the first support 502 and the second support 504 are pivoted to each other so that the angle therebetween becomes smaller, the second stopper 516 moves in a direction 553 in which it is separated from the first stopper 514, thereby causing the second neck 550 of the second stopper 516 to enter the first neck 546 of the opening 524. To this end, the circumferential dimension of the first neck 546 is slightly greater than the circumferential dimension 556 of the second neck 550, but less than the circumferential second dimension 554 of the second head 548, such that it can act as a stop member to block further operation of the second stop 516 in a direction 553 separate from the first stop 514 to block further pivoting of the first and second supports 502, 504, such that pivoting of the two is limited to a predetermined angle, as previously described.

Fig. 6 is a schematic view showing a structure of a motion retarder device 600 according to a fourth embodiment of the present invention. Similar to the motion retarding apparatus 200, 300, 500 of the embodiment shown in fig. 2-5, the motion retarding apparatus 600 includes first and second supports 602, 604, first and second stoppers 614, 616, etc., similar to the corresponding components of fig. 2-5, and will not be repeated here. In fig. 6, the illustration of the first and second tie down, the first pivot shaft and the second pivot shaft is omitted.

As shown in fig. 6, the first stopper 614 of the motion retarder 600 is provided at an end of the first support 602 adjacent to the second support 604 and has an opening, and the second stopper 616 is provided at an end of the second support 604 adjacent to the first support 602 and exhibits a bending with respect to the second support 604. The dimension of the opening of the first stopper 614 in the vertical direction is greater than the dimension of the second stopper 616 in the vertical direction for the bending of the second support 604 to pass through. In the relative pivotal movement of the first support 602 and the second support 604 shown in fig. 6, the bending of the second stop 616 interferes with the first stop 614, thereby preventing the second support 604 from continuing to pivot relative to each other in the direction 610 that makes the angle with the first support 602 smaller. In this interference, the bending of the second stopper 616 creates a stop by hooking one side of the opening of the first stopper 614. It will also be appreciated that the fold of the second restraining member 616 has a dimension 636 in a direction perpendicular to the pivoting direction 658 of the second restraining member 616 that is greater than the dimension (not shown) of the opening in that direction, thereby creating a relative interference and stop.

Fig. 7 is a schematic view showing a structure of a motion retarder 700 according to a fifth embodiment of the present invention. Similar to the first to fourth embodiments described above, the motion retarder 700 of the fifth embodiment includes first and second supports 702, 704, first and second pivot shafts 706, 708, first and second tie down members 720, 722, etc., which are similar to the corresponding components in fig. 2 to 6, and will not be repeated herein. The first supporting member 702 in fig. 7 includes a first base plate 703 having a bar shape and first wing portions 705 longitudinally disposed from both sides of the first base plate 703. Accordingly, the first tie down 720 may be fixed to the first wing 705, and the first pivot shaft 706 may be disposed on an end of the first wing 705 adjacent to the second support 704. Similarly, the second support 704 includes a second base plate 707 in a strip shape and second wing portions 709 disposed longitudinally from both sides of the second base plate 707. Accordingly, the second tie down 722 may be secured to the second wing 709, and the second pivot shaft 708 may be disposed on an end of the second wing 709 adjacent the first support 702.

As shown in fig. 7, a first stopper 714 is provided at one end of the first support 702, and it is in the form of a first bend with respect to the first substrate 703 of the first support 702. Specifically, the first bend is disposed obliquely from the first base plate 703 of the first support 702 and is located on the same side of the first base plate 703 as the first wing 705. The second stopper 716 provided at one end of the second support 704 presents a second bend with respect to the second substrate 707 of the second support 704. Specifically, the second bend is inclined from the second base 707 in the same direction as the second wing 709. In other embodiments, the angle formed by the first bend of the first stopper 714 with respect to the first substrate 703 of the first support 702 and the second bend of the second stopper 716 with respect to the second substrate 707 of the second support 704 may be specifically set according to the angle that is limited, respectively.

As shown in fig. 8, after the first pivot shaft 706 and the second pivot shaft 708 are pivotally fixed relative to each other, when the first support 702 and the second support 704 are pivoted relative to each other in the direction 710 in which the angle between them becomes smaller, the first stopper 714 and the second stopper 716 move relative to each other in the direction 728 until they are opposite to each other at a predetermined angle to collide with each other, so as to prevent the continued relative pivoting between the first support 702 and the second support 704.

Further, as shown in connection with fig. 9, the first stopper 914 and the second stopper 916 in the sixth embodiment are configured in an L-shape in cross section. It should be appreciated that in further alternative embodiments, the cross-section of the first and/or second limiter can be configured as an arc, a semicircle, a spiral, etc.

Fig. 10 is a schematic view showing a structure of a motion retarder 1000 according to a seventh embodiment of the present invention. The motion retarding apparatus 1000 includes first and second supports 1002, 1004 similar to the embodiments of fig. 2-9, and first and second pivot shafts 1006, 1008 similar to the corresponding components of fig. 2-9, which are not repeated herein. In fig. 10, the illustrations of the first and second tie down members, the first and second stopper members are omitted. The motion retarding apparatus 1000 includes an engagement member 1060, the engagement member 1060 being pivotally secured relative to the first support 1002 and the second support 1004, and a pivot axis 1062 of the engagement member 1060 being pivotally secured where the first pivot axis 1006 and the second pivot axis 1008 are pivotally secured relative to each other. The relative relationship between the engagement member 1060 and the first support member 1002 and the first and second support members 1004 and the second limit member is not shown in fig. 10, and it should be understood that the arrangement and relationship of the first and second limit members shown in each of the embodiments of fig. 2 to 9 may be applied to the engagement member 1060 and the first limit member provided on the first support member 1002 or the engagement member 1060 and the second limit member provided on the second support member 1004.

Fig. 11 is a schematic view showing a structure of an example of the engagement piece 1060 in fig. 10. The engagement member 1060 is generally in the shape of a lancet to mate with the first support 1002 and the second support 1004, which are illustrated as semi-cylindrical in fig. 10. The two tips of the hinge 1060 are provided with pivot shafts 1062, and a third stopper 1064 is provided on one side of the hinge 1060 adjacent to the first support 1002 to generate a collision stop with a first stopper (not shown) provided on the first support 1002; on the side of the engagement member 1060 adjacent to the second support member 1004, a fourth stop member 1066 is provided to create an interference stop with a second stop member (not shown) provided on the second support member 1004. Although a stop member similar to the embodiment of fig. 7 and 8 is shown in fig. 11, it should be understood that the other embodiments and other suitable opposing structures capable of creating an interference stop are applicable to the engagement member 1060 and the first and second stop members. Furthermore, although the motion retarding device 1000 is shown in fig. 10 as including 1 engagement member 1060, in alternative embodiments, the motion retarding device 1000 may include a plurality of engagement members, each engaged in sequence between the first support member 1002 and the second support member 1004, the configuration of the restraining structure may be as described in various embodiments, as well as other suitable opposing structures capable of achieving a backstop.

Fig. 12 shows a schematic structural view of a motion retarder device 1200 according to an eighth embodiment of the present invention. The motion retarding device 1200 has first and second supports 1202, 1204, first and second pivot shafts 1206, 1208, first and second stoppers 1214, 1216, and the like, similar to the motion retarding device 700 shown in fig. 7. The first tie down and the second tie down are omitted in fig. 12. The motion retarding device 1200 includes a retarder 1268, the retarder 1268 having a first end 1270 secured to the first support 1202 and a second end 1272 secured to the second support 1204. A first end 1270 of the blocking member 1268 is secured to the opposite end of the first support 1202 from the first pivot axis 1206 by, for example, an anchor hook structure 1274, and a second end 1272 of the blocking member 1268 is secured to the opposite end of the second support 1204 from the second pivot axis 1208 by, for example, an anchor hook structure 1276. It will be appreciated that the first end 1270 of the blocking member 1268 may be secured in other alternative positions to the first support 1202 by other securing means and the second end 1272 may be secured in other alternative positions to the second support 1204 by other securing means.

The blocking member 1268 may be an elastic element having a contracted elasticity, such as a spring or an elastic webbing, or the like. Upon pivoting of the first support 1202 in a direction 1210 that is angularly less than the second support 1204, the blocking member 1268 creates a reverse blocking force to block pivoting in that direction 1210. When the forearm and upper arm of the upper limb are secured to the first support 1202 and the second support 1204, respectively, the blocking member 1268 can generate a reverse blocking force to block bending of the elbow joint of the upper limb and ensure safety of the inserted catheter if the upper limb is to be bent to pull and pull the catheter inserted through the facial organ.

It should be understood that the shape configuration of the first and second supports shown in the foregoing embodiments can be mutually used, the first and second pivot shafts can be mutually used, and the third and fourth stoppers of the first and second stoppers and the engagement members can be mutually used.

In each embodiment, the first support and the second support are used for being fixed with the forearm and the upper arm of the upper limb, so that the pivoting of the first support and the second support follows the bending of the elbow joint between the forearm and the upper arm; further, the angle of the first support and the second support pivoted to each other is restricted by the first stopper rigidly fixed to the first support and the second stopper rigidly fixed to the second support, thereby restricting the mutual movement of the forearm and the upper arm of the upper limb fixed to the first support and the second support, thereby restricting the bending angle of the elbow joint to a predetermined angle range which can prevent the hand at the distal end of the forearm from touching the facial organ and thus risk the catheter inserted through the facial organ.

From an abstract, but still definite sense, any arrangement of components to achieve the same functionality is effectively "associated" such that the desired functionality is achieved. Thus, any two components herein combined to achieve a particular functionality can be seen as "associated with" each other such that the desired functionality is achieved, irrespective of architectures or intermedial components. Likewise, any two components so associated can also be viewed as being "operably connected," or "operably coupled," to each other to achieve the desired functionality.

Furthermore, those skilled in the art will recognize that the boundaries between the functionality of the above described operations are merely illustrative. The functionality of multiple operations may be combined into a single operation, and/or the functionality of a single operation may be distributed in additional operations. Moreover, alternative embodiments may include multiple instances of a particular operation, and the order of operations may be altered in various other embodiments.

Furthermore, the apparatus may be physically distributed over a plurality of devices, functionally functioning as a single apparatus. Also, the devices functionally forming separate devices may be integrated in a single physical device. In addition, the units and circuits may be combined in one or more devices as appropriate. However, other modifications, variations, and alternatives are also possible. The specification and drawings are, accordingly, to be regarded in an illustrative rather than a restrictive sense.

In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word 'comprising' does not exclude the presence of other elements or steps than those listed in a claim. Furthermore, as used herein, the terms a or an, are defined as one or more than one. Moreover, the use of introductory phrases such as "at least one" and "one or more" in the claims should not be construed to imply that the introduction of another claim element by the indefinite articles "a" or "an" limits any particular claim containing such introduced claim element to inventions containing only one such element, even when the same claim includes the introductory phrases "one or more" or "at least one" and indefinite articles such as "a". The same is true for the use of definite articles. Unless stated otherwise, terms such as "first" and "second" are used to arbitrarily distinguish between the elements such terms describe. Thus, these terms are not necessarily intended to indicate temporal or other priorities of such elements. The mere fact that certain measures are recited in mutually different claims does not indicate that a combination of these measures cannot be used to advantage.

Claims

1. A motion retarding apparatus comprising:

the first support piece and the first binding piece are arranged on the first support piece; the first support piece is provided with a first pivot shaft, is semi-cylindrical and is provided with a semi-circular end face;

the second supporting piece and the second binding piece are arranged on the second supporting piece; the second support piece is provided with a second pivot shaft which is pivotally and relatively fixed with the first pivot shaft so that the second support piece can pivot relative to the first support piece; the second support piece is semi-cylindrical and has a semi-circular end surface;

wherein the first and second limit pieces are configured to pivot the first support piece relative to the second support piece within a predetermined angle, the predetermined angle being an obtuse angle; and

wherein when the first support member pivots relative to the second support member to make the angle between the first support member and the second support member smaller, the first limit member and the second limit member approach each other to interfere with each other to prevent the first support member from pivoting relative to the second support member.

2. A motion retarding apparatus according to claim 1, wherein:

3. A motion retarding apparatus according to claim 2, wherein:

the second dimension is greater than the first dimension.

4. A motion retarding apparatus according to claim 1, wherein: the first limiting piece is a first bending arranged at one end of the first supporting piece and opposite to the first supporting piece, and the first bending is configured to be mutually abutted with the second limiting piece so as to prevent the first supporting piece from pivoting relative to the second supporting piece.

5. A motion retarding apparatus according to claim 4, wherein: the second limiting piece is a second bend arranged at one end of the second supporting piece; the first bend and the second bend are configured to interfere with each other to inhibit the first support from pivoting relative to the second support.

6. A motion retarding apparatus according to claim 1, wherein: further included is a blocking member having a first end secured to the first support and a second end secured to the second support, the blocking member configured to generate a reverse blocking force to resist pivoting in the direction when the first support is pivoted relative to the second support such that the angle formed by the first support and the second support is reduced.

7. A motion retarding apparatus comprising:

the first limiting piece is arranged at one end of the first supporting piece and rigidly fixed with the first supporting piece;

the second limiting piece is arranged at one end of the second supporting piece and rigidly fixed with the second supporting piece; and

an engagement member pivotally secured relative to the first and second support members and having a third stop member adjacent the first stop member of the first support member and a fourth stop member adjacent the second stop member of the second support member; wherein when the first support is pivoted relative to the second support such that the angle formed by the first support and the second support is reduced:

to hinder pivoting of the first support relative to the second support;

wherein the first and second limit pieces are configured to pivot the first support piece relative to the second support piece within a predetermined angle, the predetermined angle being an obtuse angle.