CN108742874B - Surgical operation tool management device - Google Patents

Abstract

The invention provides a surgical operation tool management device, which solves the trouble of checking numbers in preparation work before an operation, improves the working efficiency of medical staff and is beneficial to the management of medical tools; the technical scheme is that the device comprises a box body, wherein a fixed block is arranged in the box body, a large gear is arranged above the fixed block, a rotating block is arranged on the large gear, a clamping pin is arranged on the rotating block, a clamping hole is formed in the large gear, a rotating shaft is arranged on the rotating block, and a first end face gear is arranged at the lower end of the rotating shaft; the fixed block is provided with a second end face gear, a channel is arranged in the fixed block, the fixed block is provided with a rectangular hole, a blind hole is formed in the fixed block, a wedge-shaped block is arranged in the blind hole, a pinion is arranged on the right side of the bull gear, a disc is arranged below the pinion, a container is arranged above the left end of the disc, a small ball is arranged in the container, an ejector rod is arranged above the feeding hole, and a rectangular box is arranged in the rectangular hole.

Description

Surgical operation tool management device

Technical Field

The invention relates to the technical field of medical instrument management, in particular to a surgical operation tool management device.

Background

At present, the medical technology is rapidly developed, a plurality of diseases can achieve good treatment effect through operations, the frequency of the operations performed in a hospital every day is increasingly frequent, and certainly, a certain amount of surgical tools is required for each operation, the surgical tools are distributed by the same surgical equipment management center, in the preparation process, a person is required to prepare the surgical instruments, then the surgical instruments are taken before waiting for a nurse in an operating room, and finally the surgical instruments are taken to the operating room, in the process, the staff in the warehouse needs to check the number of each tool, the hospital is busy in the number checking process, the medical staff is relatively few originally, the workload is large, therefore, the situation that the number of individual tools is too large or insufficient is inevitable, the trouble is caused for the number checking of the management center personnel, and moreover, the operation tools are expensive, and the great waste of limited resources of the hospital is possibly caused.

To this end, the present invention provides a surgical tool management device to solve the above problems.

Disclosure of Invention

Aiming at the situation, in order to overcome the defects of the prior art, the invention provides the surgical operation tool management device, which effectively solves the trouble of checking the number in preparation work before an operation, liberates personnel in a warehouse management center, is beneficial to the management of the number and the quality of medical tools and avoids the problem of equipment loss caused by human errors.

The technical scheme includes that the device comprises a rectangular box body, a fixed block is arranged in the box body, a horizontal and rotatable large gear is arranged above the fixed block, a vertical through hole is formed in the center of the large gear, a rotating block coaxial with the large gear is arranged in the through hole, the rotating block and the large gear are not separated from each other and cannot move up and down, a blind hole formed in the outer edge surface of the rotating block along the radial direction of the rotating block is arranged, a slidable clamping pin is arranged in the blind hole, a pressure spring is connected between the clamping pin and the bottom end of the blind hole, and the outer; the side wall of the through hole is provided with a clamping hole corresponding to the clamping pin, the outer end of the clamping pin is clamped in the clamping hole, the rotating block can rotate in the through hole, the large gear does not rotate along with the rotating block, the rotating block drives the clamping pin to be separated from the clamping hole through the inclined surface when the rotating block rotates, and the rotating block can only rotate in a single direction in the through hole; the rotating block is provided with a rotating shaft which vertically penetrates through the rotating block and can drive the rotating block to rotate, the rotating shaft can move up and down, and the lower end of the rotating shaft is arranged below the rotating block and is fixedly provided with a horizontal first face gear; a second end face gear meshed with the first end face gear is fixed on the upper end face of the fixed block, and the first end face gear and the second end face gear are meshed with each other or separated from each other to enable the rotating shaft not to rotate or rotate;

the fixed block is internally provided with a transversely arranged channel, the upper end surface of the fixed block is provided with a feeding hole communicated with the channel, the fixed block is provided with a discharging hole communicated with the channel, the fixed block is provided with a plurality of rectangular holes which are distributed along the length direction of the channel and are positioned below the channel, the front end of each rectangular hole is in an open shape, the fixed block is internally provided with blind holes which are arranged at the upper side of the channel and are in one-to-one correspondence with the rectangular holes, wedge-shaped blocks which can move up and down in the blind holes are arranged in the blind holes, the lower ends of the wedge-shaped blocks block the channel;

the small gear is meshed with the right side of the large gear, the disc which can rotate along with the small gear is arranged below the small gear, a plurality of notches which are distributed in the circumferential direction and penetrate through the upper end face and the lower end face of the disc are formed in the disc, a container is arranged above the left end of the disc, a plurality of small balls are arranged in the container, the feeding hole is positioned below the notch on the right side of the disc, and the small balls enter the notch on the left side of the disc from the container and enter the feeding hole through the rotation of the disc; the vertical ejector rod is arranged above the feeding hole, the rectangular box capable of sliding back and forth is arranged in the rectangular hole, the small balls enter the feeding hole in batches, when the small balls enter the feeding hole in batches, the ejector rod presses the small balls in the feeding hole downwards to enable the small balls to move upwards through the inclined plane to open the channel, meanwhile, the wedge blocks move upwards to enable the rectangular box to slide forwards along the rectangular hole, and the front end of the rectangular box is arranged outside the fixed block.

The medical instrument management system is ingenious and novel in structure, is beneficial to improving the working efficiency of medical staff, avoids the trouble of checking the number of the medical staff, reduces the risk of loss of surgical instruments, reduces the management difficulty of hospitals on tool instruments, prevents the waste of limited resources of the hospitals, reduces the cost and is convenient to popularize.

Drawings

FIG. 1 is a front cross-sectional view of the present invention.

FIG. 2 is a top cross-sectional view of the present invention.

FIG. 3 is a sectional view taken along line A-A.

FIG. 4 is a schematic view showing the connection of the large gear, the rotating block, the small gear and the fixed shaft according to the present invention.

Fig. 5 is a schematic view of the connection of the disc, the arc plate and the collecting hopper in the present invention.

FIG. 6 is a schematic view showing the connection of the first cylinder, the second cylinder and the winding spring according to the present invention.

Fig. 7 is a schematic view of a bull gear structure according to the present invention.

Fig. 8 is a schematic structural view of the rotating shaft and the first face gear in the present invention.

Fig. 9 is a schematic structural view of a turning block in the present invention.

Fig. 10 is a schematic view of the connection of the pinion, end cam, connecting shaft, disk, slot, arc plate and collecting bucket of the present invention.

Fig. 11 is a schematic view of the connection of the receiving plate, the arc plate and the collecting hopper in the present invention.

FIG. 12 is a schematic view showing the connection of the fixing block, the rectangular hole, the feeding hole and the plate according to the present invention.

FIG. 13 is a first schematic structural diagram of a fixing block, a rectangular hole, a vertical groove and a feeding hole in the invention.

FIG. 14 is a second schematic structural view of the fixing block, the rectangular hole, the vertical groove and the feeding hole in the present invention.

Fig. 15 is a schematic view showing the construction of the first cylinder and the annular plate in the present invention.

Fig. 16 is a schematic structural view of a wedge block, a flat bar and a stop bar in the present invention.

Fig. 17 is an enlarged view of fig. 1 at B.

FIG. 18 is a schematic view showing the connection of the rectangular box, the horizontal plate and the through holes in the horizontal plate.

Detailed Description

The following description will explain embodiments of the present invention in further detail with reference to the accompanying drawings.

As shown in fig. 1 to 18, the invention comprises a rectangular box body 1, a fixed block 2 is arranged in the box body 1, a horizontal and rotatable large gear 3 is arranged above the fixed block 2, a vertical through hole is arranged in the center of the large gear 3, a rotating block 4 coaxial with the large gear 3 is arranged in the through hole, the rotating block 4 is not separated from the large gear 3, the rotating block 4 cannot move up and down, a blind hole radially arranged along the rotating block 4 is arranged on the outer edge surface of the rotating block 4, a slidable bayonet lock is arranged in the blind hole, a pressure spring is connected between the bayonet lock and the bottom end of the blind hole, and the outer end surface of the; the side wall of the through hole is provided with a clamping hole corresponding to the bayonet lock, the outer end of the bayonet lock is clamped in the clamping hole, the rotating block 4 can rotate in the through hole, the large gear 3 does not rotate along with the rotating block 4, when the rotating block 4 rotates, the rotating block 4 drives the bayonet lock to be separated from the clamping hole through the inclined surface, and the rotating block 4 can only rotate in one direction in the through hole; a rotating shaft 5 which vertically penetrates through the rotating block 4 and can drive the rotating block 4 to rotate is arranged on the rotating block 4, the rotating shaft 5 can move up and down, and the lower end of the rotating shaft 5 is arranged below the rotating block 4 and is fixedly provided with a horizontal first end face gear 6; a second end face gear 7 meshed with the first end face gear 6 is fixed on the upper end face of the fixed block 2, and the first end face gear 6 and the second end face gear 7 are meshed with each other or separated from each other to enable the rotating shaft 5 not to rotate or rotate;

the device is characterized in that a transversely arranged channel is arranged in the fixed block 2, a feeding hole 8 communicated with the channel is formed in the upper end face of the fixed block 2, a discharging hole communicated with the channel is formed in the fixed block 2, a plurality of rectangular holes 9 which are distributed along the length direction of the channel and are positioned below the channel are formed in the fixed block 2, the front ends of the rectangular holes 9 are in an open shape, blind holes which are arranged on the upper side of the channel and correspond to the rectangular holes 9 one by one are formed in the fixed block 2, wedge blocks 10 capable of moving up and down in the blind holes are arranged in the blind holes, the channel is blocked by the lower ends of the wedge blocks 10, and an inclined plane;

a small gear 12 is meshed with the right side of the large gear 3, a disc 13 which can rotate along with the small gear 12 is arranged below the small gear 12, a plurality of notches which are distributed in the circumferential direction and penetrate through the upper end face and the lower end face of the disc 13 are formed in the disc 13, a container 14 is arranged above the left end of the disc 13, a plurality of small balls are arranged in the container 14, the feeding hole 8 is positioned below the right-side notch of the disc 13, and the small balls enter the left-side notch of the disc 13 from the container 14 and rotate through the disc 13 to enter the feeding hole 8; a vertical ejector rod 15 is arranged above the feed hole 8, a rectangular box 11 capable of sliding back and forth is arranged in the rectangular hole 9, small balls enter the feed hole 8 in batches, when a batch of small balls enter the feed hole 8, the ejector rod 15 presses the small balls in the feed hole 8 downwards to enable the small balls to move upwards through the inclined plane to open a channel, meanwhile, the wedge block 10 moves upwards to enable the rectangular box 11 to slide forwards along the rectangular hole 9, and the front end of the rectangular box 11 is placed on the outer side of the fixing block 2.

In order to realize that the ejector rod 15 rhythmically presses small balls in sequence to realize that the rectangular box 11 sequentially slides out of the rectangular hole 9 forwards, the lower end of the pinion 12 is fixedly provided with an end face cam concentric with the pinion 12, the lower end of the end face cam is uniformly provided with a plurality of undulations, the upper end of the ejector rod 15 is in contact with the lower end face of the end face cam, the rotation of the end face cam enables the ejector rod 15 to be inserted into or separated from the feed hole 8 through the undulations so as to press the small balls in the feed hole 8 into a channel, and therefore the wedge blocks 10 are forced to sequentially move upwards.

In order to realize that the disc 13 rotates along with the pinion 12, a connecting shaft coaxial with the pinion 12 is fixed on the lower end surface of the pinion 12, and the lower end of the connecting shaft is coaxially fixed with the disc 13.

In order to realize that the small balls in the container 14 are pressed into the channel by the ejector rod 15 in sequence, the ejector rod 15 can be inserted into the channel downwards under the action of the end face cam, so that the small balls are pressed into the channel in sequence and move to the other end of the channel along the inner wall of the channel, and the other end of the channel is led to the outer side of the fixed block 2; the upper cartridge of feed port 8 has collection fill 17, and collection fill 17 is upper end open-ended casing, and collects 17 intracavity bottom surfaces and be the conical surface, and the lower extreme of feed port 8 inserts the upper end of feed port 8, and ejector pin 15 inserts feed port 8 downwards through collection fill 17 lower extreme export under the effect of terminal surface cam.

In order to facilitate the recovery of the small balls and to facilitate the taking out of the small balls from the channel, one end of the channel is connected with the lower end of the feeding hole 8, and the other end of the channel is communicated to the outer side of the fixed block 2.

In order to realize that the small balls are sequentially pushed to the right side of the disc 13 by the notches and fall into the collecting hopper 17 when the small balls reach the right side of the disc 13, the container 14 is a shell with an opening at the upper end, the lower end surface in the cavity of the container 14 is conical, the opening at the lower end of the container 14 is positioned right above the notches at the right side of the disc 13, and the small balls sequentially enter the notches through the opening at the lower end of the container 14 under the action of gravity; a plurality of vertical support rods 20 are arranged on the outer side wall of the container 14, the upper ends of the support rods 20 are fixed with the container 14, and the lower ends of the support rods 20 are fixed with the fixed block 2; the right-hand member of disc 13 run through collection fill 17 lateral wall and arrange in collection fill 17 in, the notch is located disc 13's outer fringe face, disc 13 arranges in that the downside of collecting the fill 17 outside portion has the horizontally to accept board 18, it is fixed with collection fill 17 to accept board 18, disc 13 arranges in and is equipped with arc 19 on the collection fill 17 outside portion, 19 lower extremes of arc with accept board 18 fixed, the notch, arc 19 and accept board 18 constitute a plurality of spaces that only can hold a bobble, make the notch drive the bobble along with disc 13's rotation and move from left to right in proper order and finally fall into the structure of collecting fill 17.

In order to realize that the rotating block 4 and the large gear 3 are not separated from each other, the side wall of the through hole is provided with an annular clamping groove, the outer side wall of the rotating block 4 is provided with an annular bulge matched with the clamping groove, and the annular bulge is clamped in the clamping groove to ensure that the rotating block 4 and the large gear 3 are not separated from each other.

In order to realize that the rotating shaft 5 can drive the rotating block 4 to rotate and the rotating shaft 5 can move up and down, the rotating shaft 5 is provided with a spline, the rotating block 4 is provided with a spline hole corresponding to the spline, and the spline can slide up and down in the spline hole together with the spline hole.

In order to realize the rotation of the big gear 3, a first cylinder 22 coaxial with the big gear 3 is fixed on the upper end surface of the fixed block 2; an annular groove 16 with a downward opening is formed in the lower end face of the large gear 3, the longitudinal section of the annular groove 16 is of a T-shaped structure, a rotatable annular plate 21 is arranged in the annular groove 16, and the annular plate 21 is fixed with a first cylinder 22; the first cylinder 22 is sleeved with a tapered roller bearing, the upper end of the bearing is contacted with the lower end face of the annular plate 21, and the outer circular face of the bearing is tightly fixed with the annular groove 16.

In order to enable the gearwheel 3 to automatically rotate, a second cylinder 23 coaxial with the gearwheel 3 is fixed on the lower end face of the gearwheel 3, the second cylinder 23 is arranged in a first cylinder 22, a clockwork spring is arranged in the first cylinder 22, one end of the clockwork spring is fixedly connected with the first cylinder 22, and the other end of the clockwork spring is connected with the second cylinder 23; 3 up end on the gear wheel a plurality of blind holes that are the circumference equipartition, have the axle 24 that draws that can reciprocate on the box 1 entablature, draw 24 lower extremes of axle to run through box 1 entablature and block and push up in the blind hole, draw 24 upper ends of the axle and arrange the box 1 outside in, draw 24 upper ends of the axle to have the arch, draw and be equipped with the extension spring on the axle 24, the extension spring upper end is connected with the arch, the extension spring lower extreme is connected with the box 1 up end.

In order to realize that the first end face gear 6 is meshed with the second end face gear 7 under the state without external force, the rotating shaft 5 is sleeved with a pressure spring, one end of the pressure spring is in contact with the lower end face of the rotating block 4, and the other end of the pressure spring is in contact with the upper end face of the first end face gear 6.

In order to conveniently rotate the large gear 3 and also facilitate quantitative opening of the rectangular box 11 by medical staff so as to reduce errors, a third cylinder 25 coaxial with the large gear 3 is fixed on the upper end face of the large gear 3, the upper end of the third cylinder 25 penetrates through the upper side plate of the box body 1, the third cylinder 25 and the upper side plate of the box body 1 can rotate relatively, a horizontal circular plate 26 is arranged at the upper end of the third cylinder 25, the circular plate 26 is arranged on the outer side of the box body 1, and the lower end face of the circular plate 26 is in contact with the upper end face of the box body 1; the upper end of the rotating shaft 5 penetrates through the circular plate 26 and is arranged above the circular plate 26, and the upper end of the rotating shaft 5 is provided with a circular baffle.

In order to mount the pinion 12, a stepped hole with an upward opening is formed in the center of the pinion 12, the diameter of the upper end of the stepped hole is smaller than that of the lower end of the stepped hole, a fixed shaft 27 is inserted into the stepped hole, and a circular clamping plate is arranged at the lower end of the fixed shaft 27 and is placed in the stepped hole, so that the pinion 12 is not separated from the rotating shaft 5.

In order to realize the up-and-down movement of the ejector rod 15 and keep the upper end of the ejector rod 15 in contact with the end face cam, a supporting block 28 is fixed on the right side wall in the cavity of the box body 1, the ejector rod 15 vertically penetrates through the supporting block 28, the ejector rod 15 can slide up and down on the supporting block 28, an annular bulge is arranged at the upper end of the ejector rod 15, a pressure spring is sleeved on the ejector rod 15, the upper end of the pressure spring is in contact with the annular bulge, the lower end of the pressure spring is in contact with the supporting block 28, and the upper; the face cam has a plurality of undulations, i.e., a plurality of push angles, and the face cam rotates to reciprocate the push rod 15 in the vertical direction.

In order to realize that the rectangular box 11 can slide back and forth in the rectangular hole 9, a plurality of compression springs arranged along the front and back direction are arranged in the rectangular hole 9, one end of each compression spring is connected with the rear end face of the rectangular hole 9, and the other end of each compression spring is connected with the rear side plate of the rectangular box 11.

In order to better realize that the front ends of the rectangular boxes 11 sequentially slide out of the rectangular holes 9 forwards when the small balls are sequentially pressed into the channel by the ejector rod 15, a vertically placed pressure spring is arranged in a blind hole in the side wall of the channel, the upper end of the pressure spring is connected with the blind hole, and the other end of the pressure spring is connected with the upper end face of the wedge-shaped block 10; open on the blind hole rear side wall and have perpendicular groove 29, there is the flat bar 30 of placing along the fore-and-aft direction in the perpendicular groove 29, flat bar 30 can slide from top to bottom in perpendicular groove 29, flat bar 30 front end is fixed with wedge 10, flat bar 30 rear end downside is fixed with vertical pin 31, pin 31 lower extreme runs through and erects 29 lateral walls in the groove and the card of pin 31 lower extreme withstands rectangle box 11, constitute wedge 10 and drive pin 31 rebound and break away from rectangle box 11 and then make rectangle box 11 the structure of roll-off rectangular opening 9 forward under the effect of pressure spring through flat bar 30.

In order to prevent the wedge 10 of the rectangle box 11 top that has opened from oppressing the bobble downwards, wedge 10 on have the locating hole 32 that the opening is forward, be located on the preceding lateral wall of the blind hole on the passageway lateral wall have with locating hole 32 complex pin, the pin is in the top of locating hole 32, the pin front end runs through the blind hole lateral wall and arranges fixed block 2 the place ahead in, the one end that the pin was arranged in 2 the place ahead of fixed block has the arch, the cover is equipped with the pressure spring on the pin, pressure spring one end is connected with the arch, the pressure spring other end is connected with fixed block 2, make the pin other end and wedge 10's preceding terminal surface keep in contact, constitute the structure that wedge 10 upwards removed pin card top into locating hole 32 when the bobble can.

In order to enable the lower end of the stop lever 31 to clamp the rectangular box 11 so that the rectangular box 11 cannot slide forwards, the rectangular box 11 is in a rectangular shell shape with an opening at the upper end, an inclined plate 33 is arranged in a cavity of the rectangular box 11, the rear end of the inclined plate 33 is hinged with the rectangular box 11, the front end of the inclined plate 33 is tilted upwards and is contacted with the side wall of the rectangular hole 9, the inclined plate 33 is connected with the rear side plate of the rectangular box 11 through a tension spring, and the front end of the inclined plate 33 is stopped by the stop lever 31; the upper end of the front side plate of the rectangular box 11 is hinged with a movable plate 34, a tension spring is connected between the lower end of the movable plate 34 and the front side plate of the rectangular box 11, a connecting plate is arranged between the movable plate 34 and the inclined plate 33, one end of the connecting plate is hinged with the middle part of the inclined plate 33, and the other end of the inclined plate 33 is hinged with the lower end of the movable plate 34.

In order to better fix the surgical tools placed in the rectangular box 11 and facilitate storage and taking, a vertical plate perpendicular to the movable plate 34 is arranged on the upper end face of the movable plate 34, a supporting plate parallel to the movable plate 34 is arranged at one end, away from the movable plate 34, of the vertical plate, a U-shaped groove with an outward opening is formed by the vertical plate, the supporting plate and the movable plate 34, an L-shaped rod is hinged to the upper end of the supporting plate, the bending part of the L-shaped rod is hinged to the upper end of the supporting plate through a torsion spring, and a structure that the opening of the U-shaped groove is sealed by the L-shaped rod when one side of the L-shaped.

In order to reduce the manufacturing cost of the rectangular box 11, the rectangular box 11 is a rectangular shell with an opening at the upper end, a transverse plate covers the upper end of the rectangular box 11, the upper end of the rear side plate of the rectangular box 11 is hinged with the transverse plate, a through hole which is communicated up and down is formed in the transverse plate, the lower end of the stop lever 31 is clamped in the through hole, and when the stop lever 31 is separated from the through hole, the rectangular box 11 slides forwards along the rectangular hole 9 under the action of a pressure spring.

In order to display the use condition of the medical tool in the rectangular box 11, a pointer is marked on a circular baffle plate at the upper end of the rotating shaft 5, a plurality of numbers are marked on the upper end surface of the circular plate 26, and the numbers are gradually increased from zero along the rotating direction of the rotating shaft 5 and are annularly arranged; the upper end face of the box body 1 is provided with numbers corresponding to the numbers on the circular plate 26, the numbers are gradually decreased along the rotating direction of the rotating shaft 5, and the sum of the numbers on the same radius on the two rows of numbers is equal to the total number of the rectangular boxes 11.

In order to realize that a rectangular box 11 is just opened when the large gear 3 rotates by a scale angle, the large gear 3 rotates to drive the small gear 12 to rotate by a specific angle, a specific number of small balls are pushed into the collecting hopper 17 by the notches in the specific angle, and simultaneously the end face cam also rotates by the same angle in the process, and the product of the number of the small balls pressed into the channel by the ejector rod 15 and the diameter of the small balls is just equal to the distance between the two wedge-shaped blocks 10 in the angle.

In order to increase the number of the scalpel handles capable of being accommodated in the fixing block 2, the plurality of channels are in S-shaped distribution in an end-to-end mode, when the number of the channels is odd, the discharge holes and the feed holes 8 are located on the opposite sides of the fixing block 2, and when the number of the channels is even, the discharge holes and the feed holes 8 are located on the same side of the fixing block 2.

The end face cam is cylindrical, a plurality of undulations are arranged on the lower end face of the end face cam and are uniformly distributed in a circumferential manner, and the ejector rod 15 can move up and down in a reciprocating manner under the action of the undulations due to the rotation of the end face cam; the plurality of notches on disk 13 are grouped in sets, but must satisfy: when the large gear 3 rotates for a specific angle or a specific scale, the small balls conveyed into the channel by the notches are all pressed into the channel by the ejector rod 15 in sequence, and the specific number of wedge blocks 10 are enabled to bounce upwards, so that the corresponding number of rectangular boxes 11 are enabled to slide out of the rectangular holes 9 forwards.

Certainly, in specific implementation, the bayonet lock on the rotating block 4 and the matched clamping hole need attention, the outer end face of the bayonet lock is an inclined plane, one end of the inclined plane is in contact with the bottom end of the clamping hole, and the other end of the inclined plane extends out of the clamping hole, so that only when the rotating block 4 rotates, the rotating block 4 drives the bayonet lock to approach the center of the rotating block 4 under the action of the inclined plane, and the bayonet lock is gradually separated from the clamping hole; in the process, the rotating direction of the rotating block 4 is determined by the position of the inclined plane, and the rotating block 4 can only rotate towards one side of the inclined plane; the front end of the lower end of the case 1 is opened to prevent the interference rectangular box 11 from being opened forward.

The small balls enter the feeding holes 8 in batches, the number of the small balls in each batch is certain, during specific implementation, the small balls in each batch can be single or multiple, and the depth of the feeding holes 8 is larger than the sum of the diameters of the small balls in each batch.

When the surgical knife handle is used, tools required for medical treatment are placed into the rectangular box 11 in advance, the surgical knife handle is taken as an example, and meanwhile, under the condition that the rotating shaft 5 can rotate only clockwise, a plurality of mechanisms for realizing unidirectional rotation of the rotating shaft 5 are provided, for example, ratchet and pawl structures are utilized, the modes are many, and the description is not needed one by one, and the specific use process is specifically described below; when the scalpel handles are placed in all the rectangular boxes 11, the marking pointer on the rotating shaft 5 is aligned with the zero number and the largest number of the outer circle numbers in the round plate 26.

When the warehouse staff before the operation is provided with the operation tools, according to the number of the operation tool handles on the operation tool list, the rotating shaft 5 is lifted to enable the first end face gear 6 and the second end face gear 7 to be mutually matched, the rotating shaft 5 is rotated to enable the pointer marked on the rotating shaft 5 to point to the number displayed on the circular plate 26, the number is the number of the operation tool handles, then the operation tool handles are put down, the rotating block 4 drives the clamping pin to rotate clockwise by a certain angle under the action of the rotating shaft 5, the rotating shaft 5 is put down to enable the first end face gear 6 to be meshed with the second end face gear 7, and the rotating shaft 5 is fixed; meanwhile, the lower end of the pull shaft 24 clamps the blind hole on the upper end face of the bull gear 3, so that the bull gear 3 cannot rotate, and medical personnel can wait for taking the bull gear.

When medical staff take surgical tools, the pulling shaft 24 is pulled upwards at the moment, so that the lower end of the pulling shaft 24 is separated from the blind hole in the upper end of the large gear 3, at the moment, the second cylinder 23 rotates in the first cylinder 22 under the action of the clockwork spring, the second cylinder 23 drives the large gear 3 in the upper end to rotate, the large gear 3 drives the third cylinder 25 in the upper end to rotate, when the number zero on the circular plate 26 rotates to the position corresponding to the marking pointer in the upper end of the rotating shaft 5 again, the clamping pin and the clamping hole are clamped again at the moment, the large gear 3 is fixed, at the moment, the pulling shaft 24 is put down to enable the lower end of the pulling shaft 24 to clamp the blind hole, and at the moment.

In the process, the clockwork spring drives the big gear 3 to rotate through the second cylinder 23, the big gear 3 drives the small gear 12 to rotate, the small gear 12 drives the disc 13 to rotate through the connecting shaft, the balls contained and contained above the right side of the disc 13 enter the notches one by one under the action of gravity, the notches drive the balls to fall into the collecting hopper 17 and then fall into the ball inlet hole along with the rotation of the disc 13, the balls in the ball inlet hole are pressed into the channel by the ejector rod 15 in sequence, when the small ball contacts with the lower end surface of the wedge-shaped block 10, because the lower end surface of the wedge-shaped block 10 is an inclined surface, therefore, the wedge-shaped block 10 is jacked upwards by the small ball under the action of the pressure rod, when the positioning hole 32 on the wedge-shaped block 10 moves upwards to be at the same height as the pin matched with the positioning hole, the pin is clamped into the positioning hole 32, so that the small ball passes through smoothly, and effectively prevents the small ball from being pressed by the wedge block 10 in the opposite direction when the ejector rod 15 moves upwards; when the wedge block 10 moves upwards, the flat rod 30 on the rear side of the wedge block is driven to slide upwards in the vertical groove 29, the flat rod 30 drives the stop rod 31 to move upwards, when the stop rod 31 is completely separated from the inclined plate 33 in the rectangular box 11, the rectangular box 11 slides forwards out of the rectangular hole 9 under the action of a rear-side pressure spring, the inclined plate 33 is driven to rotate upwards by the inclined plate 33 under the action of the pressure spring in the forward sliding process of the rectangular box 11, the inclined plate 33 pulls the lower end of the movable plate 34 to rotate upwards through the connecting plate, the movable plate 34 at the moment tends to be horizontal, at the moment, a medical worker takes the scalpel handle forwards along the movable plate 34 with hands, the L-shaped plate rotates and does not block the scalpel handle from sliding out of the.

When the scalpel handles in all the rectangular boxes 11 are completely used up, the warehouse management personnel firstly put out all the pellets in the channel, then place the scalpel handles in the rectangular boxes 11 one by one, the scalpel handles are clamped in the U-shaped grooves by the L-shaped rods, then pull the pins on the wedge blocks 10 one by one forward to enable the wedge blocks 10 to move downwards under the action of the blind holes and block the channel, at the moment, the lower ends of the blocking rods 31 extend into the rectangular boxes 11 again, the rear side plates of the rectangular boxes 11 are short, so that the blocking rods 31 cannot interfere with the front and back sliding of the rear side plates of the rectangular boxes 11, the opening of the rectangular holes 9 supports against the inclined plate 33 and enables the inclined plate 33 to start to rotate in the opposite direction until the upper ends of the inclined plate 33 are always at the same height with the upper side walls of the rectangular holes 9, and in the rotating process of the inclined plate 33, the inclined plate 33 pushes the movable plate 34 to rotate through, the other mode is that the diaphragm closing cap is adopted to rectangle box upper end, and the through-hole on the diaphragm is gone into to the shelves pole lower extreme card realizes that the box body is kept off in the rectangle hole, and when the shelves pole upwards broke away from the diaphragm, the box body slided forward, and the front end of box body was placed in the rectangle hole outside this moment, and personnel can hand the box body and stimulate forward this moment to make the box body break away from the rectangle hole completely, the diaphragm can be turned over this moment, can take out the surgical knife handle in the box body smoothly.

In order to make the interior pellet of passageway convenient by the discharge passage, 2 preceding terminal surfaces of fixed block open and to have logical groove, logical groove is seted up along the shape of passageway, it is covered by a plurality of mobilizable panels to lead to the groove front end, the panel upper end articulates at fixed block 2 front end, it has the screw to run through on the panel lower extreme, fixed block 2 is last to have the screw hole that corresponds the complex with the screw, the panel lower extreme is compressed tightly when the screw is screwed into the screw hole, the pellet can not escape, when the pellet in the passageway needs to be cleared up, open fly leaf 34 in proper order, and the opening of panel can not be interfered to the curb plate before box 1, stir the pellet or utilize the finger to make it follow the tail end roll-off of passageway, perhaps directly take out the pellet from leading to the inslot, the pellet of.

Certainly, some balls can be reserved between the wedge blocks 10 in the channel in advance, the length difference between the length of the channel between two adjacent wedge blocks 10 and the occupied length of the balls existing in the period is certain, so the ejector rod 15 only needs to press a few balls in the rotating angle of the pinion 12, the sum of the diameters of the balls is equal to the mentioned length difference, the working load of the ejector rod 15 and the grooved pulley is effectively reduced, the quantity of the balls required to be discharged during replacement is also reduced, and therefore the quantity of the balls required to be discharged is also certain.

The driving mode of the ejector rod 15 in the invention is many, not only limited to the driving of the end cam, but also can be realized by fixing the upper end of the ejector rod 15 on a hydraulic cylinder, installing a gear pump on the hydraulic cylinder, connecting a servo motor on the gear pump, controlling the motor by a rotating shaft 5 and a circular plate 26 together, when a pointer on a bulge at the upper end of the rotating shaft 5 points to '0' on the circular plate 26, the motor is in a short circuit state, when the pointer on the bulge at the upper end of the rotating shaft 5 does not point to '0' on the circular plate 26, the pull shaft 24 is pulled upwards at the same time, a switch of the motor is opened, then, the large gear 3 drives the small gear 12 to rotate, when the small gear 12 sends a batch of small balls into the feed hole 8 through the circular plate 13, the ejector rod 15 presses the small balls downwards under the action of the hydraulic cylinder, so that the, meanwhile, the wedge block 10 to-be-stopped rod 31 moves upwards and is separated from the inclined plate 33, the rectangular box 11 slides forwards under the action of the pressure spring, the front end of the rectangular box 11 is arranged on the outer side of the fixed block 2, and the scalpel in the rectangular box 11 can be taken out smoothly.

The invention has the outstanding advantages that:

1. the invention forms a device with quantitative function by designing the large gear 3, the rotating shaft 5, the rotating wheel, the bayonet lock and the clamping hole, only the pointer points to the number on the circular plate 26, the number corresponding to the pointer on the circular plate 26 is equal to the number of the opened rectangular box 11, and the number on the outermost circle can already display the number remained in the whole device, moreover, after the rectangular box 11 is opened each time, the pointer on the upper end of the rotating shaft 5 always corresponds to '0' on the circular plate 26, and the pointer can be conveniently and quickly screwed to the number of the needed scalpel handle when being used next time.

2. The invention utilizes the characteristic of the clockwork spring, not only realizes the automatic rotation of the big gear 3, but also avoids the trouble that the big gear 3 needs to be adjusted when in use each time, is convenient for multiple use, and is beneficial to prolonging the maintenance period.

3. According to the invention, the two face gears are engaged and disengaged to control the fixing or rotation of the rotating shaft 5, and the rotating shaft 5 is connected with the rotating block 4 through a spline, so that the rotating shaft 5 and the rotating block 4 can slide up and down relatively, and the rotating shaft 5 can rotate to drive the rotating shaft to rotate quickly at any time.

4. The end face cam, the disc 13, the notch and the ejector rod 15 are mutually matched, so that the small balls are sequentially brought to the collecting hopper 17 one by one, and then are sequentially pressed into the channel by the ejector rod 15, and finally the wedge-shaped block 10 is jacked up and the rectangular box 11 is automatically popped out.

5. The pointer and the two circles of numbers are arranged in the device, and the number on the outer circle has an accumulation function and displays the use condition of the appliance in the whole device, so that warehouse personnel can know the condition; the numbers of the inner ring can rotate according to the rotation of the rotating shaft 5, the pointer can indicate the numbers of the inner ring after each use, and a user only needs to indicate the pointer to the needed numbers, so that the operation is convenient and fast.

6. In the invention, the number is determined and then the rectangular boxes 11 are opened according to the number, so that the required number of tools can be accurately and conveniently released, the possibility of infection of other appliances is avoided, and the burden of sterilization workers is reduced.

7. The internal structure of the rectangular box 11 in the invention utilizes a connecting rod structure, thereby not only realizing that the rectangular box 11 is clamped by the stop lever 31. The movable plate 34 tends to be horizontal when the rectangular box 11 slides out of the rectangular hole 9, and the rectangular box is convenient to take.

8. According to the invention, the rotating shaft 5 is operated by only the warehouse staff, the pull shaft 24 is touched by only the medical staff in the operating room, the warehouse staff is responsible for determining the number and taking the medical staff, and the warehouse staff does not need to wait for the medical staff, so that the warehouse staff can prepare the appliances for the next operation, the labor is saved, the time and the labor are saved, and the working efficiency is improved.

9. The hospital can use a plurality of these devices simultaneously, places different utensil in every device, sets for quantity one by one according to the operation material utensil inventory that receives, can set up some wares of virus killing in every rectangle box 11, realizes the inside health situation of rectangle box 11, avoids infecting.

Claims (10)

1. The surgical operation tool management device is characterized by comprising a rectangular box body (1), wherein a fixed block (2) is arranged in the box body (1), a horizontal and rotatable large gear (3) is arranged above the fixed block (2), a vertical through hole is formed in the center of the large gear (3), a rotating block (4) coaxial with the large gear (3) is arranged in the through hole, the rotating block (4) is not separated from the large gear (3), the rotating block (4) cannot move up and down, a blind hole formed in the outer edge surface of the rotating block (4) along the radial direction of the rotating block (4) is formed, a slidable clamping pin is arranged in the blind hole, a pressure spring is connected between the clamping pin and the bottom end of the blind hole, and the outer end surface of the; a clamping hole corresponding to the clamping pin is formed in the side wall of the through hole, the outer end of the clamping pin is clamped in the clamping hole, the rotating block (4) can rotate in the through hole, the large gear (3) does not rotate along with the rotating block (4), when the rotating block (4) rotates, the rotating block (4) drives the clamping pin to be separated from the clamping hole through the inclined surface, and the rotating block (4) can only rotate in a single direction in the through hole; a rotating shaft (5) which vertically penetrates through the rotating block (4) and can drive the rotating block (4) to rotate is arranged on the rotating block (4), the rotating shaft (5) can move up and down, and the lower end of the rotating shaft (5) is arranged below the rotating block (4) and is fixedly provided with a horizontal first face gear (6); a second end face gear (7) meshed with the first end face gear (6) is fixed on the upper end face of the fixed block (2), and the first end face gear (6) and the second end face gear (7) are meshed with each other or separated from each other to enable the rotating shaft (5) not to rotate or rotate;

the device is characterized in that a transversely-arranged channel is arranged in the fixed block (2), a feeding hole (8) communicated with the channel is formed in the upper end face of the fixed block (2), a discharging hole communicated with the channel is formed in the fixed block (2), a plurality of rectangular holes (9) which are distributed along the length direction of the channel and are positioned below the channel are formed in the fixed block (2), the front ends of the rectangular holes (9) are open, blind holes which are arranged on the upper side of the channel and correspond to the rectangular holes (9) one by one are formed in the fixed block (2), wedge blocks (10) capable of moving up and down in the blind holes are arranged in the blind holes, the channel is blocked at the lower ends of the wedge blocks (10), and an inclined plane is formed in one side of the;

a small gear (12) is meshed on the right side of the large gear (3), a disc (13) capable of rotating along with the small gear (12) is arranged below the small gear (12), a plurality of notches which are distributed in a circumferential manner and penetrate through the upper end face and the lower end face of the disc (13) are formed in the disc (13), a container (14) is arranged above the left end of the disc (13), a plurality of small balls are arranged in the container (14), the feeding hole (8) is located below the notches on the right side of the disc (13), the small balls enter the notches on the left side of the disc (13) from the container (14) and rotate through the disc (13) to enable the small balls to enter the feeding hole (8); there is vertical ejector pin (15) feed port (8) top, gliding rectangle box (11) around can having in rectangle hole (9), the bobble divides the batch to get into in feed port (8), when a batch bobble got into feed port (8) in, ejector pin (15) press down the bobble in feed port (8) make bobble make wedge (10) rebound open the passageway through the inclined plane, wedge (10) rebound makes rectangle box (11) slide along rectangle hole (9) simultaneously, make rectangle box (11) front end put in the fixed block (2) outside.

2. A surgical tool management device according to claim 1, wherein the lower end of the pinion (12) is fixed with an end cam concentric with the pinion (12), the end cam has a plurality of undulations uniformly distributed on the lower end, the upper end of the mandril (15) is in contact with the lower end surface of the end cam, and the rotation of the end cam causes the mandril (15) to be inserted into or separated from the feed hole (8) through the undulations so as to press the small ball in the feed hole (8) into the channel, thereby forcing the wedge blocks (10) to move upwards in sequence; the ejector rod (15) can be downwards inserted into the channel under the action of the end face cam, so that the small balls are sequentially pressed into the channel and move to the other end of the channel along the inner wall of the channel, and the other end of the channel leads to the outer side of the fixed block (2); a collecting hopper (17) is inserted in the feed hole (8), the collecting hopper (17) is a shell with an opening at the upper end, the inner bottom surface of the cavity of the collecting hopper (17) is a conical surface, the lower end of the feed hole (8) is inserted into the feed hole (8), and the ejector rod (15) is inserted into the feed hole (8) downwards through an outlet at the lower end of the collecting hopper (17) under the action of an end surface cam; a supporting block (28) is fixed on the right side wall in the cavity of the box body (1), a push rod (15) vertically penetrates through the supporting block (28), the push rod (15) can slide up and down on the supporting block (28), an annular bulge is arranged at the upper end of the push rod (15), a pressure spring is sleeved on the push rod (15), the upper end of the pressure spring is in contact with the annular bulge, the lower end of the pressure spring is in contact with the supporting block (28), and the upper end of the push rod (15) is kept in contact with the end face cam under the action of the; the end face cam is provided with a plurality of undulations, namely a plurality of push stroke angles, and the end face cam rotates for a circle to enable the push rod (15) to reciprocate in the vertical direction.

3. A surgical tool management device according to claim 2, wherein a connecting shaft coaxial with the pinion (12) is fixed to the lower end surface of the pinion (12), and the lower end of the connecting shaft is fixed coaxially with the disc (13); the container (14) is a shell with an opening at the upper end, the lower end surface in the cavity of the container (14) is conical, the opening at the lower end of the container (14) is positioned right above the notch at the right side of the disc (13), and the small balls sequentially enter the notch through the opening at the lower end of the container (14) under the action of gravity; a plurality of vertical support rods (20) are arranged on the outer side wall of the container (14), the upper ends of the support rods (20) are fixed with the container (14), and the lower ends of the support rods (20) are fixed with the fixing block (2); the right-hand member of disc (13) run through and collect fill (17) lateral wall and arrange in and collect and fill (17), the notch is located the outer fringe face of disc (13), disc (13) are arranged in and are collected the downside of fighting (17) outside portion and have horizontally to accept board (18), it is fixed with collection fill (17) to accept board (18), disc (13) are arranged in and are equipped with arc (19) on collecting fill (17) outside portion, arc (19) lower extreme is fixed with accepting board (18), the notch, arc (19) and accepting board (18) constitute a plurality of spaces that only can hold a bobble, make the notch drive the bobble along with the rotation of disc (13) and finally fall into the structure of collecting fill (17) by the left right side removal in proper order.

4. The surgical tool management device as claimed in claim 1, wherein the through hole has a circular slot on the sidewall, the rotary block (4) has a circular protrusion on the outer sidewall for engaging with the slot, and the circular protrusion is engaged with the slot to prevent the rotary block (4) and the bull gear (3) from disengaging from each other; the rotating shaft (5) is provided with a spline, the rotating block (4) is provided with a spline hole corresponding to the spline, and the spline is inserted into the spline hole and can slide up and down in the spline hole; a pressure spring is sleeved on the rotating shaft (5), one end of the pressure spring is in contact with the lower end face of the rotating block (4), and the other end of the pressure spring is in contact with the upper end face of the first end face gear (6); the central position of the pinion (12) is provided with a stepped hole with an upward opening, the diameter of the upper end of the stepped hole is smaller than that of the lower end of the stepped hole, a fixed shaft (27) is inserted into the stepped hole, the lower end of the fixed shaft (27) is provided with a circular clamping plate, and the circular clamping plate is arranged in the stepped hole to prevent the pinion (12) from being separated from the rotating shaft (5).

5. A surgical tool management device according to claim 1, wherein a first cylinder (22) coaxial with the gearwheel (3) is fixed on the upper end face of the fixed block (2); an annular groove (16) with a downward opening is formed in the lower end face of the large gear (3), the longitudinal section of the annular groove (16) is of a T-shaped structure, a rotatable annular plate (21) is arranged in the annular groove (16), and the annular plate (21) is fixed with a first cylinder (22); a tapered roller bearing is sleeved on the first cylinder (22), the upper end of the bearing is contacted with the lower end surface of the annular plate (21), and the outer circular surface of the bearing is tightly fixed with the annular groove (16); a second cylinder (23) coaxial with the gearwheel (3) is fixed on the lower end face of the gearwheel (3), the second cylinder (23) is arranged in the first cylinder (22), a clockwork spring is arranged in the first cylinder (22), one end of the clockwork spring is fixedly connected with the first cylinder (22), and the other end of the clockwork spring is connected with the second cylinder (23); the blind hole that a plurality of circumference equipartitions are gone up to gear wheel (3) up end, have pull axle (24) that can reciprocate on box (1) the curb plate, pull axle (24) lower extreme and run through box (1) side panel and block in the blind hole, pull axle (24) upper end and arrange box (1) outside in, there is the arch on pulling axle (24), pull axle (24) and go up the cover and be equipped with the extension spring, the extension spring upper end is connected with the arch, the extension spring lower extreme is connected with box (1) up end.

6. The surgical operation tool management device according to claim 1, wherein a third cylinder (25) coaxial with the gear wheel (3) is fixed on the upper end surface of the gear wheel (3), the upper end of the third cylinder (25) penetrates through the upper side plate of the box body (1), the third cylinder (25) and the upper side plate of the box body (1) can rotate relatively, a horizontal circular plate (26) is arranged on the upper end of the third cylinder (25), the circular plate (26) is arranged on the outer side of the box body (1), and the lower end surface of the circular plate (26) is contacted with the upper end surface of the box body (1); the upper end of the rotating shaft (5) penetrates through the circular plate (26) and is arranged above the circular plate (26), and the upper end of the rotating shaft (5) is provided with a circular baffle; a pointer is marked on the circular baffle at the upper end of the rotating shaft (5), a plurality of numbers are marked on the upper end face of the circular plate (26), and the numbers are gradually increased from zero along the rotating direction of the rotating shaft (5) and are annularly arranged; the upper end face of the box body (1) is provided with numbers corresponding to the numbers on the circular plate (26), the numbers are gradually decreased along the rotating direction of the rotating shaft (5), and the sum of the numbers on the same radius on the two rows of numbers is equal to the total number of the rectangular boxes (11).

7. A surgical tool management device according to claim 1, wherein the rectangular hole (9) is provided with a plurality of compression springs arranged in a front-back direction, one end of each compression spring is connected with the rear end face of the rectangular hole (9), and the other end of each compression spring is connected with the rear side plate of the rectangular box (11); a pressure spring is vertically arranged in a blind hole in the side wall of the channel, the upper end of the pressure spring is connected with the blind hole, and the other end of the pressure spring is connected with the upper end face of the wedge block (10); open on the blind hole rear side wall and have perpendicular groove (29), there are flat bar (30) of placing along the fore-and-aft direction in perpendicular groove (29), flat bar (30) can be in perpendicular groove (29) and slide from top to bottom, flat bar (30) front end is fixed with wedge (10), flat bar (30) rear end downside is fixed with vertical pin (31), pin (31) lower extreme runs through perpendicular groove (29) lateral wall and pin (31) lower extreme card withstands rectangle box (11), constitute wedge (10) through flat bar (30) drive pin (31) rebound and break away from rectangle box (11) and then make rectangle box (11) under the effect of pressure spring roll-off rectangle hole (9) structure forward.

8. The surgical tool management device according to claim 1, wherein the wedge (10) is provided with a positioning hole (32) with a forward opening, a pin matched with the positioning hole (32) is arranged on a front side wall of the blind hole on the channel side wall, the pin is positioned above the positioning hole (32), the front end of the pin penetrates through the side wall of the blind hole and is arranged in front of the fixing block (2), one end of the pin in front of the fixing block (2) is provided with a protrusion, the pin is sleeved with a pressure spring, one end of the pressure spring is connected with the protrusion, the other end of the pressure spring is connected with the fixing block (2), so that the other end of the pin is in contact with the front end face of the wedge (10), and a structure that the wedge (10) is clamped into the positioning hole (32) when the wedge moves upwards to enable the small ball to smoothly pass through.

9. The surgical operation tool management device according to claim 7, wherein the rectangular box (11) is in a rectangular shell shape with an open upper end, a sloping plate (33) is arranged in a cavity of the rectangular box (11), the rear end of the sloping plate (33) is hinged with the rectangular box (11), the front end of the sloping plate (33) is tilted upwards and is contacted with the side wall of the rectangular hole (9), the sloping plate (33) is connected with the rear side plate of the rectangular box (11) through a tension spring, and the front end of the sloping plate (33) is blocked by the blocking rod (31); a movable plate (34) is hinged to the upper end of the front side plate of the rectangular box (11), a tension spring is connected between the lower end of the movable plate (34) and the front side plate of the rectangular box (11), a connecting plate is arranged between the movable plate (34) and the inclined plate (33), one end of the connecting plate is hinged to the middle of the inclined plate (33), and the other end of the inclined plate (33) is hinged to the lower end of the movable plate (34); the vertical plate vertical to the movable plate (34) is arranged on the upper end face of the movable plate (34), a supporting plate parallel to the movable plate (34) is arranged at one end, away from the movable plate (34), of the vertical plate, a U-shaped groove with an outward opening is formed by the supporting plate and the movable plate (34), an L-shaped rod is hinged to the upper end of the supporting plate, the bending portion of the L-shaped rod is hinged to the upper end of the supporting plate through a torsion spring, and a structure is formed in which the opening of the U-shaped groove is sealed by the L-shaped rod when one side of the L-shaped plate.

10. The surgical tool management device according to claim 7, wherein the rectangular box (11) is a rectangular shell with an open upper end, a transverse plate covers the upper end of the rectangular box (11), the upper end of the rear side plate of the rectangular box (11) is hinged with the transverse plate, the transverse plate is provided with a through hole which is communicated with the upper part and the lower part, the lower end of the stop lever (33) is clamped in the through hole, and when the stop lever (31) is separated from the through hole, the rectangular box (11) slides forwards along the rectangular hole (9) under the action of a pressure spring.

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