Traction weights are extensively applied in orthopedics and neurosurgery. However,
the current design of traction weights has inherent flaws, it is unstable,easy to loss
and cause injuries. However, a number of novel designs remain inconvenient to use,
whereas some incur high production costs because of complicated manufacturing
processes. So,we persent a new design of medical traction weight, this design is sturdy
and reliable, and its production casting is not rise. The proposed design is simple and
has high potential in clinical applications.
In this device, the traction weight is placed on a flat circular plate with the stem fixed
on the plate center. The upper portion of the stem is bent into a hook. People with the
traction device often knock the device off when walking around and unconsciously
touch the traction weights. These accidental cases of traction weight failure lead to
foot or ankle injuries. Several improved types of medical traction [1–4] have
addressed the loose fit of traction weights; however, the make process of them is
difficult and cost of production of these devices are high.
In this study, we designed a new type of medical traction weight to address the design
flaw of these devices without increasing the production cost. The new design can be
conveniently attached and detached and can improve the safety and effectiveness of
the traction process.
The new improved traction system consists of three parts: a shaft rod with the upper
part bent into a hook, a base plate, and several traction weights. The shaft rod is
connected to the base plate, and the sides of the tractive weight center axis contain
grooves. Traction starts at the top of the flat cylindrical convex sets, whereas the
bottom has a flat cylindrical concave, which can be combined with different chassis
and can also be used with another tractive weight with a chimeric convex phase. In
orthopedic traction, the user aligns the groove card with the shaft rod along the
lateral axis. The traction weight is dropped on the traction mound at the bottom of the
groove when the tractive weight approaches the shaft rod to allow the chassis
chimeric phase into the traction weight flat bar at the groove bottom and thus ensure
the placement of the first traction weight. If a second traction weight is required, the
groove bottom of the second traction weight made by the shaft rod is removed. A
second flat bar at the bottom of the traction mound serves as the sag, and the flat bar
at the top of the first tractor mound forms a chimeric convex phase. Depending on the
need, these steps can be repeated to place additional traction weights. The traction
weights between the chassis and chimeric phases as a whole and between individual
chimeric phases ensure the stability of the traction device against outside collision
forces. To remove the tractive weight, the vertical traction weight is first lifted and
placed at the bottom of the cave with the chassis or is detached from another tractive
weight of convex sets to allow translational pulling tuo of the groove in the shaft lever
and obtain the desired traction weight.
As previously mentioned, the newly developed design is convenient, stable against
outside collision forces, safe, simple, and does not incur additional manufacturing
costs.
Fig.1 Overall view of device structure consisting of three traction weights
The figure 1 further illustrate the advantages of the newly designed device:
Medical traction weight components: (1) shaft rod, (2) chassis, (3) convex set, (4)
main body of the traction mound, (5) grooves, and (6) sag
In the research design of the traction weight, the shaft rod (1) is connected to the
chassis (2). The shaft rod (1) continues into the upper part of the bent hook, with the
main body of the traction weight (4) leading to the upper part of the convex platform
(3). The traction mound (4) contains a depression (6). When the traction weight is
added, the user aligns the traction weight with the side groove (5) and inserts it into
the shaft rod (1). The rod (1) close to the groove bottom (5) [i.e., when the shaft rod (1)
is collocated with the center axis of the traction weight] loses the traction weight, the
chassis (2) becomes the embedded traction weight at the bottom of the cave (i.e., the
first traction mound is removed). To add a second traction weight in the bottom of the
shaft rod (1) close to the groove (5) [i.e., the shaft lever (1) is collocated with the
center axis of the traction weight], the bottom of the concave convex platform should
be aligned with the first traction weight (3) chimeric phase. Additional traction
weights can be added according to the need. When To remove the traction weight, at
first, the upper traction weight be lifted vertically along the rod (1), when the bottom
of the traction weight is detached from the convex platform (3). A translational
tractive weight is then placed in the shaft lever (1) in the groove (5) to obtain the
desired traction weight.
In the research and development products, shaft lever (1) connected to the chassis (2),
rod (1) continuation in the upper part of bending hook, tractive weight main body (4)
the upper part of the convex platform (3), (4) the traction mound the lower part of the
body have depression 6, when add put tractive weight, performer holds tractive
weight, make the tractive weight of side groove (5) into the shaft lever (1), rod (1)
close to the bottom of the groove (5) (that is, the shaft lever (1) and the center axis of
the tractive weight collocated) lost traction weight, make the chassis (2) the
embedded traction weight at the bottom of the cave, namely add put out the first
traction mound; Add a second traction weight, in the bottom of the shaft lever (1)
close to the groove (5) (that is, the shaft lever (1) and the center axis of the tractive
weight collocated), when makes the bottom of the concave convex platform with first
traction weight (3) phase chimeric; So according to the need, can add put third,
fourth... Traction weight. Remove the tractive weight, the first lift on vertical traction
weight, make its sag of 6 and at the bottom of the chassis (2) or another tractive
weight untethered from convex platform (3), and translational tractive weight emerge
in the shaft lever (1) in the groove (5), the desirable order traction weight.
Traction weights are extensively applied in orthopedics and neurosurgery. However,
the current design of traction weights has inherent flaws, including difficult handling,
bulkiness, unstable support, and traction loss. Moreover, the current design can cause
wounds, fractures, damage to nerve cells and blood vessels, and other injuries. The
currently used tractive weights in clinical applications have the same design,
including the scale, shape, measurement code, flat cylindrical body, and edge to axial
groove. Several models with improved designs have been developed in recent years.
The designs have all addressed the weak lead codes of the traction weight to different
degrees. However, a number of these designs remain inconvenient to use, whereas
some incur high production costs because of complicated manufacturing processes.
Our medical traction weight design is sturdy and reliable, and its production uses the
same casting mold during the entire manufacturing process. The proposed design is
simple, reliable, and has high potential in clinical applications.