CN219207560U - Limiter for keeping lower limb skin traction function body position - Google Patents

Abstract

The utility model relates to the technical field of medical appliances, in particular to a limiter for keeping the body position of a lower limb skin traction function, which is characterized in that: including mounting plate, first supporting shoe, second supporting shoe and spacing seat, spacing seat is equipped with upwards and to the spacing chamber of mounting plate one side opening in spacing seat through two connecting rods and mounting plate fixed connection, is equipped with the fixed band in spacing chamber upper end opening part on the spacing seat, is equipped with the perforation in the terminal surface of one side of keeping away from mounting plate on the spacing seat, and mounting plate upper end is located to first supporting shoe and second supporting shoe interval, is equipped with first arc supporting surface on the first supporting shoe, is equipped with the second arc supporting surface on the second supporting shoe, is equipped with first adjustment mechanism and second adjustment mechanism on the mounting plate. The utility model has novel integral structure, can ensure that the lower limb for skin traction maintains good skin traction function body position, thereby being convenient for achieving the effect of traction effectiveness and effectively ensuring the quality of skin traction.

Description

Limiter for keeping lower limb skin traction function body position

Technical Field

The utility model relates to the technical field of medical appliances, in particular to a limiter for maintaining the body position of a lower limb skin traction function.

Background

Skin traction refers to traction by wrapping affected limbs by using rubberized fabric or special traction belts and the like, has the main functions of maintaining reduction and stability of fracture, is mainly suitable for auxiliary fixation treatment of femoral shaft fracture of children over 3 years old and under 12 years old, stable femoral intertrochanteric fracture of old people, femoral neck fracture or before and after operation, and patients using skin traction need to pay attention to observe the skin condition of the skin traction part, if skin redness and crumple occur, the traction belts should be loosened in time, the wound surface is treated, and traction treatment is carried out after the wound surface heals or bone traction is changed.

When the lower limb of a patient is fractured to carry out skin traction, particularly the old, the lower limb of the patient cannot well maintain a good skin traction function position, namely the lower limb of the patient cannot maintain an abduction neutral position and a vertical neutral position between the heel and the lower limb, the foot can be easily rotated outwards, the knee joint can be bent, the hip can also be rotated outwards, and therefore, the phenomenon of leg bending and outwards turning occurs, and in this way, the effect of traction effectiveness cannot be achieved, and the quality of skin traction can be influenced.

Disclosure of Invention

The utility model aims to solve the technical problem of providing the limiter for maintaining the skin traction function position of the lower limb, which has novel integral structure and can ensure that the lower limb which performs skin traction maintains good skin traction function position, thereby being convenient for achieving the effect of traction effectiveness and effectively ensuring the quality of skin traction.

In order to solve the technical problems, the utility model adopts the following technical scheme: the utility model provides a stopper for keeping low limbs skin traction function position, including mounting plate, first supporting shoe, second supporting shoe and spacing seat, spacing seat is through two connecting rods and mounting plate fixed connection, be equipped with upwards and open and be used for playing spacing effect's spacing chamber to mounting plate one side, spacing seat is last to be equipped with the fixed band in spacing chamber upper end opening part, spacing seat is last to be equipped with the perforation that can make the traction belt pass in the one side terminal surface that keeps away from mounting plate, mounting plate upper end is located to first supporting shoe and second supporting shoe interval, be equipped with the first arc holding surface that is used for playing the support spacing effect to shank outside bottom on the first supporting shoe, be equipped with the second arc holding surface that is used for playing the support spacing effect to thigh outside bottom on the second supporting shoe, be equipped with the first adjustment mechanism who is used for adjusting first supporting shoe supporting position and the second adjustment mechanism who is used for adjusting second supporting shoe supporting position on the mounting plate.

Further, the bottom of one side of the first supporting block for supporting the lower leg is flat-pointed, and the bottom of one side of the second supporting block for supporting the thigh is flat-pointed.

Further, the connecting rod is the telescopic link, and the telescopic link includes interior pole and outer pole, and in the outer pole was located to the mobilizable cover of one end of interior pole, fixed being equipped with annular elastic block on the one end surface of interior pole, fixed being equipped with annular stopper on the one end internal surface of outer pole, the other end and the spacing seat fixed connection of outer pole, the other end and the mounting plate fixed connection of interior pole.

Further, the inner surfaces of the left side and the right side of the limiting cavity are respectively provided with a side pad, the bottom surface of the limiting cavity is provided with a bottom pad, and the upper end surface of the bottom pad is upwards protruded and is provided with an arc-shaped protruding part.

Further, one end of the fixing strap is fixedly connected with one side outer surface of the limiting seat, a connecting ring is fixedly arranged on the other side outer surface of the limiting seat, and the other end of the fixing strap can penetrate through the connecting ring and be detachably connected with one end of the fixing strap through a magic tape.

Furthermore, a notch is arranged at one side of the upper end of the limiting seat, which is close to the mounting bottom plate, and the upper end of the limiting seat is stepped.

Further, the first supporting blocks are two and are symmetrically arranged on the left side and the right side of the upper end of the installation bottom plate respectively, and the second supporting blocks are two and are symmetrically arranged on the left side and the right side of the upper end of the installation bottom plate respectively.

Further, a first arc-shaped supporting pad is fixedly arranged on the first arc-shaped supporting surface, and a second arc-shaped supporting pad is fixedly arranged on the second arc-shaped supporting surface.

Further, a plurality of first bleeder vents are uniformly distributed on the first supporting block, a plurality of first through holes corresponding to the first bleeder vents one to one are formed in the first arc-shaped supporting pad, a plurality of second bleeder vents are uniformly distributed on the second supporting block, and a plurality of second through holes corresponding to the second bleeder vents one to one are formed in the second arc-shaped supporting pad.

Further, first adjustment mechanism and second adjustment mechanism all include adjusting screw, adjusting nut and compression spring, first supporting shoe and second supporting shoe lower extreme are all fixed to be equipped with the slider, the mounting plate upper end is equipped with slider looks adaptation and runs through the spout at mounting plate one side border, sliding fit in locating the spout and between the two of slider, adjusting screw is fixed locate in the spout of mounting plate, be equipped with the round hole with the adjusting screw looks adaptation on the slider, adjusting screw's one end passes the round hole and with adjusting nut threaded connection, compression spring cover is located on the adjusting screw, compression spring's one end and slider looks butt and the other end and mounting plate looks butt.

As can be seen from the above description, the limiter for maintaining the skin traction function position of the lower limb has novel overall structure, the heel of the lower limb can be placed into the limiting cavity through the arrangement of the limiting seat and fixed through the fixing straps, so that the heel of the lower limb can be stably limited, the lower limb can be kept at 90 degrees with the lower leg, the sole of the lower limb can not be coated at the same time, the comfort is improved, the first arc-shaped supporting surface of the first supporting block can be well attached to the bottom surface of the outer side of the lower leg, so that the stable supporting and limiting function can be realized, the second arc-shaped supporting surface of the second supporting block can be well attached to the bottom surface of the outer side of the thigh of the lower limb, so that the stable supporting and limiting function can be realized, therefore, when the lower limb of a patient is fractured to carry out skin traction, the lower limb can be well kept at the skin traction function position, the lower limb can be well kept at the outer bending position, the knee can be well kept between the heel and the lower limb, the outer bending position can be well kept, the outer bending of the leg can not be realized, the hip can not be well bent, the phenomenon of the outer leg can not be realized, the sense of the external swing can not be easily, the external traction can be realized, and the quality can not be guaranteed, and the phenomenon of the external traction can be realized; through the arrangement of the perforation, the traction belt of the skin traction device can pass through the perforation, so that the normal traction effect of the skin traction device is not affected; the supporting position of the first supporting block is convenient to adjust through the arrangement of the first adjusting mechanism, so that the first supporting block plays a better supporting and limiting role on the outer bottom of the lower leg, meanwhile, the lower leg with different thicknesses can be well adapted, and the supporting position of the second supporting block is convenient to adjust through the arrangement of the second adjusting mechanism, so that the second supporting block plays a better supporting and limiting role on the outer bottom of the upper leg, and meanwhile, the lower leg with different thicknesses can be well adapted; through the setting of connecting rod to make spacing seat and mounting plate be connected as a whole, mounting plate is pushed down the back by the low limbs when using, can make spacing seat more stable be in corresponding placement position.

Drawings

Fig. 1 is a schematic perspective view of a limiter for maintaining the traction function position of the skin of the lower limb according to the present utility model.

Fig. 2 is a left side view of a retainer for maintaining the position of the skin traction function of the lower limb according to the present utility model.

Fig. 3 is a schematic cross-sectional view in the direction A-A of fig. 2.

Fig. 4 is a schematic view of a partial structure of the connecting rod.

Fig. 5 is a schematic perspective view of a limiting seat.

Fig. 6 is a schematic perspective view of the mounting base plate.

Fig. 7 is a schematic perspective view of the first support block.

Fig. 8 is a schematic perspective view of a second support block.

In the figure: 1-mounting a bottom plate; 2-a first support block; 21-a first arcuate bearing surface; 22-a first ventilation hole; 3-a second support block; 31-a second arcuate bearing surface; 32-second ventilation holes; 4, a limiting seat; 41-a limiting cavity; 42-perforating; 43-side pad; 44-a base pad; 441-arc-shaped projections; 45-connecting ring; 46-notch; 5-connecting rods; 51-an inner rod; 511-an annular elastomeric block; 52-an outer rod; 521-annular limiting blocks; 6-fixing the binding band; 61-magic tape; 71-a first adjustment mechanism; 72-a second adjustment mechanism; 731-adjusting screw; 732-adjusting the nut; 733-a compression spring; 734-slider; 735—a chute; 81-a first arcuate support pad; 811-a first via; 82-a second arcuate support pad; 821-second via;

Detailed Description

The utility model is further described below by means of specific embodiments.

As shown in fig. 1 to 8, the limiter for maintaining the body position of the skin traction function of the lower limb according to the present utility model comprises a mounting base plate 1, a first supporting block 2, a second supporting block 3 and a limiting seat 4, wherein the limiting seat 4 is fixedly connected with the mounting base plate 1 through two connecting rods 5, a limiting cavity 41 which is upward and opened to one side of the mounting base plate 1 and is used for limiting the heel is arranged in the limiting seat 4, a fixing strap 6 is arranged at an opening at the upper end of the limiting cavity 41 on the limiting seat 4, a through hole 42 through which the traction strap can pass is arranged on an end surface of one side, far away from the mounting base plate 1, of the limiting seat 4, the first supporting block 2 and the second supporting block 3 are arranged at intervals at the upper end of the mounting base plate 1, a first arc-shaped supporting surface 21 for supporting and limiting the outer bottom of the lower leg is arranged on the first supporting block 2, a second arc-shaped supporting surface 31 for supporting and limiting the outer bottom of the upper leg is arranged on the second supporting block 3, and a second supporting mechanism 72 for adjusting the position of the first supporting block 2 and a second supporting mechanism 71 is arranged on the mounting base plate 1.

Through the setting of spacing seat 4, can make the low limbs heel put into spacing intracavity 41, and pass through fixed bandage 6 is fixed, thereby can play stable spacing effect to low limbs heel, and make between foot and the shank keep 90 degrees, can not wrap up the low limbs foresole simultaneously again, be favorable to promoting the travelling comfort, through the setting of first supporting shoe 2, the first arc supporting surface 21 of first supporting shoe 2 can laminate with low limbs shank outside bottom surface fine, thereby play stable spacing effect of support, the second arc supporting surface 31 of second supporting shoe 3 can laminate with low limbs thigh outside bottom surface fine, thereby play stable spacing effect of support, and one of them comes, when patient's low limbs fracture carries out skin traction, can make the low limbs that carry out skin traction keep good skin traction function position, can very well keep the abduction neutral position and back and lower limbs between can very good the low limbs and keep the knee joint position very well, thereby can not bend, can not roll outwards easily, thereby the phenomenon of the sense of rolling over can not be reached to the effect of the foot, can not roll outwards, thereby the effect of rolling over can not be guaranteed to the quality is achieved.

In addition, a plurality of third ventilation holes communicated with the limiting cavity 41 are uniformly distributed on the left and right side surfaces of the limiting seat 4, so that the overall ventilation property of the limiting seat 4 is improved.

In addition, preferably, the perforation 42 is rectangular, and by the arrangement of the perforation 42, the traction belt of the skin traction device can pass through without affecting the normal traction effect of the skin traction device; the first adjusting mechanism 71 is arranged to facilitate adjustment of the supporting position of the first supporting block 2, so that the first supporting block 2 plays a better supporting and limiting role on the outer bottom of the lower leg, and is beneficial to better adapting to lower legs with different thicknesses, and the second adjusting mechanism 72 is arranged to facilitate adjustment of the supporting position of the second supporting block 3, so that the second supporting block 3 plays a better supporting and limiting role on the outer bottom of the upper leg, and is beneficial to better adapting to upper legs with different thicknesses; through the setting of connecting rod 5, thereby make spacing seat 4 with mounting plate 1 connects as a whole, when using mounting plate 1 is pushed down by the low limbs after, can make spacing seat 4 more stable be in corresponding placement position.

As shown in fig. 7 and 8, in addition, preferably, the bottom of one side of the first supporting block 2 for supporting the lower leg is in a flat pointed shape, so that the bottom of one side of the first supporting block 2 is better embedded into the bottom of the outer side of the lower leg, so as to form better limit support for the lower leg, and the bottom of one side of the second supporting block 3 for supporting the upper leg is in a flat pointed shape, so that the bottom of one side of the second supporting block 3 is better embedded into the bottom of the outer side of the upper leg, so as to form better limit support for the upper leg.

As shown in fig. 4, specifically, the connecting rod 5 is a telescopic rod, the telescopic rod includes an inner rod 51 and an outer rod 52, one end of the inner rod 51 is movably sleeved in the outer rod 52, an annular elastic block 511 is fixedly arranged on an outer surface of one end of the inner rod 51, an annular limiting block 521 is fixedly arranged on an inner surface of one end of the outer rod 52, the other end of the outer rod 52 is fixedly connected with the limiting seat 4, the other end of the inner rod 51 is fixedly connected with the mounting base plate 1, by adopting this structure, the length of the connecting rod 5 is conveniently adjusted, so that the spacing between the limiting seat 4 and the mounting base plate 1 is adjusted, and the limiting block can be better suitable for limiting lower limbs with different lengths of different patients.

As shown in fig. 1, in addition, the inner surfaces of the left and right sides of the limiting cavity 41 are respectively provided with a side pad 43, the bottom surface of the limiting cavity 41 is provided with a bottom pad 44, the upper end surface of the bottom pad 44 is upwards protruded and is formed with an arc-shaped protruding portion 441, preferably, the side pad 43 and the bottom pad 44 can be made of cotton pads, thereby being beneficial to improving the overall comfort level, and in addition, the arc-shaped protruding portion 441 can be padded in the bottom recess of the heel of the lower limb, thereby preventing pressure sores of the heel.

As shown in fig. 1 and 5, specifically, one end of the fixing strap 6 is fixedly connected with one side outer surface of the limiting seat 4, a connecting ring 45 is fixedly arranged on the other side outer surface of the limiting seat 4, the other end of the fixing strap 6 can pass through the connecting ring 45 and be detachably connected with one end of the fixing strap 6 through a magic tape 61, correspondingly, the magic tape 61 comprises a velvet belt and a hook belt which are mutually bonded and matched, the velvet belt is fixedly arranged on one end surface of the fixing strap 6, and the hook belt is fixedly arranged on the other end surface of the fixing strap 6.

As shown in fig. 5, in addition, a notch 46 is formed at the upper end of the limiting seat 4 near the side of the mounting base plate 1 and the upper end of the limiting seat 4 is stepped, so that the better limiting effect of the fixing strap 6 on the heel of the lower limb is facilitated while the better limiting height of the limiting seat 4 on the heel of the lower limb is ensured, and the better limiting effect of the limiting seat 4 on the heel of the lower limb is achieved.

As shown in fig. 1, preferably, the two first support blocks 2 are symmetrically arranged on the left and right sides of the upper end of the mounting base plate 1, and the two second support blocks 3 are symmetrically arranged on the left and right sides of the upper end of the mounting base plate 1, so that the limiter is well applicable to the use of left lower limbs and right lower limbs, and meanwhile, when one of the first support blocks 2 supports and limits the bottom of the outer side of the lower limb lower leg, the other first support block 2 can also play a certain auxiliary supporting and limiting role on the bottom of the inner side of the lower limb lower leg, and when one of the second support blocks 3 supports and limits the bottom of the outer side of the lower limb lower leg, the other second support block 3 can also play a certain auxiliary supporting and limiting role on the bottom of the inner side of the lower limb lower leg.

As shown in fig. 1, in addition, a first arc supporting pad 81 is fixedly arranged on the first arc supporting surface 21, a second arc supporting pad 82 is fixedly arranged on the second arc supporting surface 31, and the first arc supporting pad 81 and the second arc supporting pad 82 can be made of cotton pads, so that overall comfort level is improved.

As shown in fig. 1, in addition, a plurality of first ventilation holes 22 are uniformly distributed on the first supporting block 2, a plurality of first through holes 811 corresponding to the first ventilation holes 22 one by one are formed in the first arc-shaped supporting pad 81, a plurality of second ventilation holes 32 are uniformly distributed on the second supporting block 3, and a plurality of second through holes 821 corresponding to the second ventilation holes 32 one by one are formed in the second arc-shaped supporting pad 82, so that the overall ventilation performance of the limiter is improved, and the situation that the contact positions of the first supporting block 2, the second supporting block 3 and the lower limbs are always closed and airtight is avoided.

As shown in fig. 1, fig. 3, fig. 6, fig. 7 and fig. 8, specifically, the first adjusting mechanism 71 and the second adjusting mechanism 72 each include an adjusting screw 731, an adjusting nut 732 and a compression spring 733, the lower ends of the first supporting block 2 and the second supporting block 3 are both fixedly provided with a sliding block 734, the upper end of the mounting bottom plate 1 is provided with a sliding groove 735 which is matched with the sliding block 734 and penetrates through one side edge of the mounting bottom plate 1, the sliding block 734 is arranged in the sliding groove 735 and is in sliding fit with the sliding groove 735, the adjusting screw 731 is fixedly arranged in the sliding groove 735 of the mounting bottom plate 1, a round hole matched with the adjusting screw 731 is formed in the sliding block 734, one end of the adjusting screw 731 passes through the round hole and is in threaded connection with the adjusting nut 732, the compression spring 733 is sleeved on the adjusting screw 731, one end of the compression spring 733 is abutted to the sliding block 734 and the other end of the sliding block 734 is abutted to the mounting bottom plate 1, the sliding block 733 is matched with the sliding groove 735, the first supporting block 734 and the second supporting block 3 can be pushed by the compression spring 732 and the adjusting nut 3, so that the second supporting block 3 can be pushed by the second supporting block 3 or the first supporting block 2 can be pushed to the second supporting block 2 in the same position, and the position of the second supporting block 3 can be adjusted along the first supporting block can be adjusted, and the position can be adjusted by the position of the second supporting block 2, and the position can be adjusted by the position of the supporting block can be adjusted.

The using method of the limiter for maintaining the traction function position of the skin of the lower limb comprises the following steps of: when the skin traction device is used, the telescopic length of the connecting rod 5 is adjusted firstly to enable the limiter to adapt to the length of the lower limb of a patient, after the skin traction device is worn on the fractured lower limb of the patient, the limiter is placed below the fractured lower limb of the patient, the position, close to the knee, of the lower limb and the thigh are supported on the mounting bottom plate 1, then the heel of the lower limb is placed in the limiting cavity 41 of the limiting seat 4, the traction belt of the skin traction device passes through the through hole 42 on the limiting seat 4, then the heel is fixed through the fixing strap 6, and then the adjusting nuts 732 on the first adjusting mechanism 71 on the outer side of the lower limb and the second adjusting mechanism 72 on the outer side of the thigh are rotated by using the socket wrench, so that the supporting positions of the first supporting block 2 and the second supporting block 3 are adjusted respectively, the first supporting block 2 plays a good supporting and limiting role on the outer bottom of the lower limb, the second supporting block 3 plays a good supporting and limiting role on the outer bottom of the thigh, so that the traction function of the skin traction device can be kept at the good skin traction position, the skin traction device can conveniently achieve the following skin traction quality, and the skin traction device can effectively achieve the following effects.

The foregoing is merely a few specific embodiments of the present utility model, but the design concept of the present utility model is not limited thereto, and any insubstantial modification of the present utility model by using the concept should be construed as infringement of the protection scope of the present utility model.

Claims (10)

1. A stop for maintaining the position of the skin traction function of the lower limb, characterized in that: including mounting plate, first supporting shoe, second supporting shoe and spacing seat, spacing seat pass through two connecting rods with mounting plate fixed connection, be equipped with upwards and to in the spacing seat mounting plate one side is opened and is used for playing spacing effect's spacing chamber to the heel, spacing seat on in spacing chamber upper end opening part is equipped with the fixed bandage, spacing seat on keep away from one side terminal surface of mounting plate is equipped with the perforation that can make the traction belt pass, first supporting shoe with the second supporting shoe interval is located mounting plate upper end, be equipped with on the first supporting shoe and be used for playing the first arc holding surface of supporting spacing effect to shank outside bottom, be equipped with on the second supporting shoe and be used for playing the second arc holding surface of supporting spacing effect to thigh outside bottom, be equipped with on the mounting plate and be used for adjusting first supporting shoe supporting position's first adjustment mechanism and be used for adjusting second supporting shoe supporting position.

2. A limiter for maintaining a lower limb skin traction function position as in claim 1 wherein: the bottom of one side of the first supporting block for supporting the lower leg is flat and pointed, and the bottom of one side of the second supporting block for supporting the thigh is flat and pointed.

3. A limiter for maintaining a lower limb skin traction function position as in claim 1 wherein: the connecting rod is the telescopic link, the telescopic link includes interior pole and outer pole, the mobilizable cover of one end of interior pole is located in the outer pole, the fixed annular elastic block that is equipped with on the one end surface of interior pole, the fixed annular stopper that is equipped with on the one end internal surface of outer pole, the other end of outer pole with spacing seat fixed connection, the other end of interior pole with mounting plate fixed connection.

4. A limiter for maintaining a lower limb skin traction function position as in claim 1 wherein: the inner surfaces of the left side and the right side of the limiting cavity are respectively provided with a side pad, the bottom surface of the limiting cavity is provided with a bottom pad, and the upper end surface of the bottom pad is upwards protruded and is provided with an arc-shaped protruding part.

5. A limiter for maintaining a lower limb skin traction function position as in claim 1 wherein: one end of the fixing strap is fixedly connected with one side outer surface of the limiting seat, a connecting ring is fixedly arranged on the other side outer surface of the limiting seat, and the other end of the fixing strap can penetrate through the connecting ring and be connected with one end of the fixing strap in a separable manner through a magic tape.

6. A limiter for maintaining a lower limb skin traction function position as in claim 1 wherein: the upper end of the limiting seat is provided with a notch at one side close to the mounting bottom plate, and the upper end of the limiting seat is stepped.

7. A limiter for maintaining a lower limb skin traction function position as in claim 1 wherein: the first supporting blocks are two and are symmetrically arranged on the left side and the right side of the upper end of the mounting bottom plate respectively, and the second supporting blocks are two and are symmetrically arranged on the left side and the right side of the upper end of the mounting bottom plate respectively.

8. A limiter for maintaining a lower limb skin traction function position as in claim 1 wherein: the first arc supporting surface is fixedly provided with a first arc supporting pad, and the second arc supporting surface is fixedly provided with a second arc supporting pad.

9. A limiter for maintaining a lower extremity skin traction function position as set forth in claim 8, wherein: the first supporting blocks are uniformly provided with a plurality of first air holes, the first arc-shaped supporting pads are provided with a plurality of first through holes corresponding to the first air holes one by one, the second supporting blocks are uniformly provided with a plurality of second air holes, and the second arc-shaped supporting pads are provided with a plurality of second through holes corresponding to the second air holes one by one.

10. A limiter for maintaining a lower limb skin traction function position as in claim 1 wherein: the first adjusting mechanism and the second adjusting mechanism comprise adjusting screws, adjusting nuts and compression springs, the first supporting blocks and the lower ends of the second supporting blocks are fixedly provided with sliding blocks, the upper ends of the mounting base plates are provided with sliding grooves which are matched with the sliding blocks and penetrate through one side edges of the mounting base plates, the sliding blocks are arranged in the sliding grooves and are in sliding fit with the sliding grooves, the adjusting screws are fixedly arranged in the sliding grooves of the mounting base plates, round holes matched with the adjusting screws are formed in the sliding blocks, one ends of the adjusting screws penetrate through the round holes and are in threaded connection with the adjusting nuts, the compression springs are sleeved on the adjusting screws, and one ends of the compression springs are in butt joint with the sliding blocks, and the other ends of the compression springs are in butt joint with the mounting base plates.

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