CN118001064A - Device for attaching a medical instrument - Google Patents

Abstract

The invention discloses a device for attaching a medical instrument, which can be attached to the device along an assembling direction, and comprises a shell, a guide wing arranged on one side of the shell along the assembling direction and a seat body arranged at the bottom of the shell along the assembling direction. The device comprises: the support block is provided with a slideway matched with the guide wing, and the support plate is perpendicular to the support block and is used for being matched with the seat body. The medical instrument is configured to stop when the guide wings are inserted into the slide ways and moved in the assembly direction until the base contacts the support plate, the slide ways and guide wings cooperate to secure the medical instrument in any first direction perpendicular to the assembly direction, and the support plate cooperates with the base to secure the medical instrument in a second direction opposite the assembly direction.

Description

Device for attaching a medical instrument

Technical Field

The present invention relates to a device for attaching medical instruments.

Background

In some implementations, kits including oxygenators, blood pumps, etc. are critical medical devices indispensable for ECMO (extracorporeal membrane lung oxygenation system) for blood oxygenation and carbon dioxide removal in place of lung function to meet the needs of intraoperative patients. In many cases, in order to achieve the maximized integration of the devices to facilitate the movement in a small space such as an elevator, a ward, an ambulance, etc., the medical devices contained in the kit are generally transferred and fixed to the control host of the ECMO system through corresponding attachment devices. Due to the particularities of the scenario, the attachment device should generally meet the requirements of convenient operation, stable connection, etc., in order to facilitate the user (e.g., medical staff) to quickly dock the medical device with the attachment device.

Indeed, driven by the above-mentioned needs, various types of attachment devices have been developed in the industry, but there is still a need for improvement to a greater or lesser extent.

For example, in the first known embodiment of publication CN116322883a, the oxygenator is fixed by means of a support arm, and essentially the oxygenator is fixed by a single point, and is easy to shake and poor in connection stability.

A second known embodiment, disclosed in publication nos. CN114585399a and WO2022254300A1, uses an open clamp to secure the oxygenator partially around, but essentially uses a single point of attachment to the oxygenator. In some cases, the stability of the connection may be improved to some extent by increasing the gauge of the attachment means to increase the area of the oxygenator surrounded by it, but this still does not change the nature of the single point fixation described above. Moreover, the encircling fixing mode does not have a physical or mechanical structure for carrying out gravity support on the oxygenator, and only the friction force generated by the clamping force can be used for overcoming the gravity of the oxygenator, so that the oxygenator does not slip off in the vertical direction and needs to be clamped tightly, and the oxygenator is inconvenient to disassemble and assemble.

The third known embodiment, disclosed as CN115227519B, uses gravity-supported fastening to overcome to some extent the above-mentioned second known embodiment's inability to support and fasten the oxygenator in the direction of gravity, but also uses single-point fastening.

Disclosure of Invention

In view of the above, the embodiments of the present invention provide a device for attaching a medical device, which can improve the connection stability of the medical device and make the mounting and dismounting thereof easy.

In order to achieve the above object, the present invention provides the following solutions:

A device for attaching a medical instrument attachable to the device in an assembly direction includes a housing, a guide wing provided at one side of the housing in the assembly direction, and a seat provided at a bottom of the housing in the assembly direction. The device comprises a supporting plate and a supporting block arranged on the supporting plate, wherein the supporting plate is provided with a locking mechanism which is detachably connected with the seat body, the supporting block is provided with a slideway which is used for being matched with the guide wing, and the slideway limits the assembly direction. The medical instrument is configured to stop when the guide wings are inserted into the slide ways and moved in the assembly direction until the base contacts the support plate, the slide ways and the guide wings cooperate to secure the medical instrument in any first direction perpendicular to the assembly direction, and the locking mechanism cooperates with the base to secure the medical instrument in a second direction opposite the assembly direction.

The attachment device provided by the embodiment of the invention is provided with the supporting block matched with the guide wing and the locking mechanism matched with the seat body, so that the double-point fixation of the medical instrument can be realized. Compared with the traditional single-point installation mode, the connection stability and reliability of the medical instrument can be effectively enhanced, and meanwhile, the medical instrument can be enabled to have better supporting stress condition. In addition, between guide wing and the supporting piece, all adopt detachable connected mode between pedestal and the locking mechanism, have simple to operate's advantage.

Drawings

FIG. 1 is a schematic view of an exploded structure between an attachment device and a medical instrument according to an embodiment of the present invention;

FIG. 2 is a schematic view of an exploded construction between a support block and a lock block;

FIG. 3 is a schematic cross-sectional view of the structure between the support block and the lock block;

FIG. 4 is a schematic cross-sectional view of the lock block and the first elastic member;

FIG. 5 is a schematic cross-sectional view of the locking mechanism;

FIG. 6 is a schematic cross-sectional view of the lock body;

fig. 7 is a schematic sectional structure of the lock pin.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by a person skilled in the art based on the embodiments of the invention without any inventive effort, are intended to fall within the scope of the invention.

It should be noted that the terms "first," "second," and the like in the description and in the claims are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. Unless otherwise indicated, terms of orientation such as "upper, lower, top, bottom" are used generally with respect to the orientation shown in the drawings or with respect to the component itself in the vertical, vertical or gravitational direction. Also, for ease of understanding and description, "inner and outer" refers to inner and outer relative to the profile of each component itself, but the above-mentioned orientation terms are not intended to limit the present invention.

As shown in fig. 1, an embodiment of the present invention provides a device 2000 for attaching a medical instrument 1000 (hereinafter referred to simply as an attachment device 2000), and the medical instrument 1000 may be attached to the attachment device 2000 in an assembling direction L (gravitational direction), thereby achieving fixation of the medical instrument 1000. In this embodiment, the medical device 1000 may be of any configuration that needs to be fixed, such as an oxygenator, a blood pump, etc., which is not limited in this embodiment.

The medical device 1000 includes a housing 110, a guide wing 120 provided at one side of the housing 110 in an assembling direction L, and a base 130 provided at the bottom of the housing 110 in the assembling direction L, and the medical device 1000 is attached to the attachment device 2000 through the guide wing 120 and the base 130 to form a double-point fixation for the medical device 1000, improving stability and reliability of connection.

The attachment device 2000 includes a support plate 200 for cooperation with the housing 130 and a support block 300 for cooperation with the guide wings 120, the support block 300 being provided on the support plate 200. In one embodiment, support blocks 300 are provided on support plate 200 by backing plate 340. Specifically, the back plate 340 is disposed on the support plate 200 substantially perpendicular to the support plate 200, and the support blocks 300 are disposed against the back plate 340 and are distributed substantially perpendicular to the support plate 200. In this specification, "substantially" is understood to mean close to, approximate to, or within a predetermined range from the target value.

As shown in fig. 2 and 3, the support block 300 is inserted and engaged with the guide wing 120, and the support block 300 is provided with a slide 310 for being fitted with the guide wing 120 and extending in the up-down direction. In order to prevent the guide wings 120 from being stuck in the sliding way 310 and thus to affect the smoothness of the installation of the medical device 1000, the supporting block 300 is made of a self-lubricating material such as PTFE, or the supporting block 300 is provided with a fourth self-lubricating bushing 360 made of a self-lubricating material, and the sliding way 310 is formed in the fourth self-lubricating bushing 360.

As shown in fig. 2, the support block 300 is provided with a slot for mounting the fourth self-lubricating bushings 360, and the fourth self-lubricating bushings 360 are provided in pairs and symmetrically provided at both end sides of the slot. The fourth self-lubricating bushing 360 is provided with a U-shaped bushing groove 361 extending in the assembly direction L, and the guide wing 120 is inserted into the support block 300 through the pair of U-shaped bushing grooves 361. The runner 310 includes a pair of U-shaped bushing slots 361 and an area between the pair of U-shaped bushing slots 361.

When installed, the guide wings 120 are inserted into the slide ways 310 and moved in the assembly direction L until the seat 130 of the medical instrument 1000 contacts the support plate 200, and the medical instrument 1000 and the guide wings 120 stop moving. Wherein the ramp 310 defines an assembly direction L of the medical device 1000.

The support block 300 is provided with a fixing block 370 at the bottom in the assembly direction L, and the guide wings 120 abut against the fixing block 370 when the seat body 130 of the medical device 1000 contacts the support plate 200. To reduce the force of the medical device 1000 on the anchor 370, the anchor 370 is provided with a float assembly 380, and the float assembly 380 functions to provide motion damping to prevent the guide wings 120 from directly acting on the anchor 370.

As shown in fig. 3, the fixing block 370 is provided with a stepped hole penetrating in the fitting direction L. The floating assembly 380 includes a screw 381 disposed in the stepped bore, a nut 382 coupled to the screw 381, and a spring 383 disposed within the stepped bore. The two ends of the spring 383 are respectively abutted against the nut 382 and the ladder in the ladder hole, the nut 382 and the screw 381 can form a whole after being screwed, and the whole formed by the nut 382 and the screw 381 is floatingly arranged in the ladder hole under the action of the spring 383.

When the guide wing 120 is not inserted into the slide 310, the nut 382 is lifted out of the stepped hole by the spring 383. When the guide wing 120 is inserted into the slide 310, the nut 382 is at least partially pressed into the stepped hole by the pressing force of the guide wing 120, thereby achieving the purpose of motion buffering. Therefore, during the process of moving along the assembling direction L, the guide wing 120 contacts with the floating assembly 380, and the floating assembly 380 performs motion buffering to release most of impact force, so that the impact force of the guide wing 120 on the fixed block 370 is reduced.

The engagement between the slide 310 and the guide wings 120 serves to fix the medical device 1000 in any first direction L1 perpendicular to the assembly direction L, and the support plate 200 engages with the housing 130 to fix the medical device 1000 in a second direction L2 opposite to the assembly direction L. In one embodiment, the assembly direction L is a gravity direction, or a vertically downward direction, and the "first direction L1" refers to any one direction on a horizontal plane perpendicular to the assembly direction L (gravity direction). That is, by the engagement between the slide 310 and the guide wing 120, the medical device 1000 loses the translational degrees of freedom in the X-axis, Y-axis directions and the rotational degrees of freedom in the X-axis, Y-axis, and Z-axis directions, the XOY plane being a horizontal plane, and the Z-axis being a vertical direction. By the cooperation between the support plate 200 and the housing 130, the degree of freedom of translation of the medical instrument 1000 in the direction of gravity is limited. Thus, after the medical device 1000 is secured in the first direction L1, i.e., is representative of being secured in a horizontal plane, including being non-movable and rotatable relative to the attachment device 2000.

To enable the engagement between the sled 310 and the guide wings 120 to further limit the translational freedom of the medical device 1000 in the Z-axis. The support block 300 is provided with a lock block 320, the lock block 320 having a first locked position when the guide wing 120 is secured within the slideway 310 of the support block 300 and a first unlocked position when the guide wing 120 is removable from within the slideway 310 of the support block 300.

The lock block 320 is slidably provided on the support block 300, and in particular, the lock block 320 is operable to reciprocate between a first locked position and a first unlocked position along a third direction L3 perpendicular to the assembly direction L. The third direction L3 is one direction in the horizontal plane, and it can be understood that the third direction L3 is one of the first directions L1. When the lock piece 320 is located at the first locking position, the lock piece 320 is engaged with the guide wing 120. When the lock piece 320 is located at the first unlocking position, the lock piece 320 is separated from the guide wing 120.

Further, a limiting block 321 is arranged on the locking block 320, a clamping groove 121 matched with the limiting block 321 is arranged on the guide wing 120, and the limitation of the translational freedom degree of the medical instrument 1000 on the Z axis is realized through the clamping matching between the limiting block 321 and the clamping groove 121. Specifically, when the lock block 320 is at the first locking position, the limiting block 321 is clamped in the clamping groove 121. At this time, the guide wings 120 are fixed to the support block 300. When the locking piece 320 is in the first unlocking position, the limiting block 321 is separated from the clamping groove 121, and the guide wing 120 can be removed from the supporting piece 300 along the second direction L2 opposite to the gravity direction.

Considering that the guide wing 120 is located in the slide way 310, the limiting block 321 needs to extend into the slide way 310 if it is to cooperate with the clamping slot 121 on the guide wing 120. Thus, the support block 300 is provided with a through hole 301 connected to the slideway 310, and the limiting block 321 is at least partially positioned in the through hole 301. The through hole 301 penetrates the fourth self-lubricating bushing 360 and then communicates with the slideway 310.

When the locking piece 320 is at the first locking position, the locking end S of the limiting block 321 protrudes out through the through hole 301 and enters the slide way 310, and is embedded into the locking groove 121. At this time, the limiting block 321 is partially located in the through hole 301 and partially located in the clamping groove 121. When the locking piece 320 is at the first unlocking position, the locking end of the limiting block 321 is retracted into the penetrating hole 301 and is disengaged from the engagement with the clamping groove 121.

As shown in fig. 2 and 4, a first elastic member 330 is disposed between the locking piece 320 and the supporting piece 300, and the first elastic member 330 is a compression spring. The first elastic member 330 functions to apply a restoring force to the locking piece 320 to maintain it in the first locking position or always have a tendency to move toward the first locking position. That is, the first elastic member 330 is used to maintain or tend to the lock piece 320 at the reset position, the reset position of the lock piece 320 is the first locking position, i.e. the position where the guide wing 120 is fixed to the support piece 300. In use, an operator applies a force on the lock block 320 opposite to the direction of the restoring force of the first elastic member 330, and the lock block 320 is pushed to move from the first locking position to the first unlocking position, so as to realize unlocking.

In order to ensure that the guide wing 120 can force the limiting block 321 to retract into the penetrating hole 301 in the process of inserting the slide way 310, the locking end S of the limiting block 321 is provided with a guiding inclined plane 3211, and the guiding inclined plane 3211 is used for decomposing the acting force of the guide wing 120 applied to the limiting block 321 along the assembling direction L into a component force on a horizontal plane, and the component force on the horizontal plane promotes the limiting block 321 to displace in the horizontal direction so as to enable the limiting block 321 to retract into the penetrating hole 301.

The potential energy of the guide slope 3211 increases gradually in the fitting direction L. The potential energy is energy generated by the difference in height of the inclined plane 3211 relative to the reference plane. As shown in fig. 3, the reference surface is a plane (shown by a broken line) passing through the upper end point of the guide slope 3211 and parallel to the fitting direction L, i.e., potential energy thereof is constant along the fitting direction L. In the embodiment, the height difference is horizontal, which is different from the conventional gravitational potential energy height difference. Accordingly, the height difference between the guide slope 3211 and the reference plane gradually increases in the fitting direction L.

In order to enable the guide wings 120 to better push the guide inclined surfaces 3211, as shown in fig. 1, a region where the guide wings 120 act on the guide inclined surfaces 3211 is provided with a mating inclined surface 122. During the movement of the guide wing 120 in the assembly direction L, the engagement inclined surface 122 forms a facing abutment relationship with the guide inclined surface 3211, thereby pushing the lock piece 320.

In operation, when the medical device 1000 is operated to move the guide wing 120 in the assembly direction L in the slideway 310 until the locking end S of the stopper 321 contacts the guide ramp 3211, the lock block 320 is driven to move toward the first unlocking position. When the medical apparatus 1000 is operated to make the guide wing 120 continue to move along the assembling direction L until the clamping groove 121 corresponds to the locking end of the limiting block 321, the locking piece 320 is restored to the first locking position under the action of the restoring force applied by the first elastic member 330, so as to realize locking and fixing of the medical apparatus 1000.

As shown in fig. 2, the locking piece 320 has a U-shaped structure including a main body sidewall 322 extending in a third direction L3, a first sidewall 323 and a second sidewall 324 located at both ends of the main body sidewall 322 in the third direction L3. The support block 300 protrudes into the U-shaped opening of the locking block 320 such that the first side wall 323 and the second side wall 324 are distributed on both sides of the support block 300 in a symmetrical manner along the assembly direction L. One end of the first elastic member 330 abuts against the support block 300, and the other end abuts against the inner surface of the first sidewall 323. The stopper 321 is disposed on the inner surface of the second sidewall 324.

A receiving hole 331 for receiving the first elastic member 330 is formed on one side surface of the support block 300, and the receiving hole 331 extends along the third direction L3. As shown in fig. 4, one end of the first elastic member 330 abuts against the inner wall of the accommodating hole 331, and the other end is located outside the accommodating hole 331 to abut against the inner surface of the first sidewall 323. A rectangular groove 303 is further formed on one side surface of the supporting block 300, the side surface of the supporting block 300 provided with the rectangular groove 303 is perpendicular to the surface provided with the groove 302, the rectangular groove 303 is communicated with the accommodating hole 331 and the groove 302, and the rectangular groove 303 and the groove 302 form a right-angle groove structure. The receiving hole 331 is disposed at the bottom of the rectangular slot, and the first sidewall 323 is at least partially disposed in the rectangular slot. When the locking piece 320 is located at the first locking position, a gap exists between the inner wall of the first side wall 323 and the bottom of the rectangular groove body. When the lock piece 320 moves from the first locking position to the first unlocking position, the inner wall of the first side wall 323 approaches toward the bottom of the rectangular groove body.

Further, as shown in fig. 2, the surface of the support block 300 facing the back plate 340 is formed with a groove 302 communicating with the penetration hole 301, and the body side wall 322 of the lock block 320 is slidably embedded in the groove 302. The purpose of extending the support block 300 into the U-shaped opening of the lock block 320 and providing the recess 302 in the support block 300 is to make the connection between the support block 300 and the lock block 320 more compact and occupy less space. In addition, a separate space for sliding the body sidewall 322 can be formed between the groove 302 and the back plate 340, so that the sliding of the locking piece 320 is more stable and reliable.

In order to ensure smooth sliding of the locking piece 320, a guiding structure is further provided between the locking piece 320 and the back plate 340 or between the locking piece 320 and the supporting piece 300, and the guiding structure comprises a guiding piece 350 and a guiding hole 351 matched with the guiding piece 350. The guide hole 351 is a long hole extending in the third direction L3, and the guide 350 is a fastener such as a bolt or a pin slidably provided in the guide hole 351. In one embodiment, the guide 350 may be provided on the body sidewall 322 of the lock block 320, the guide hole 351 being a blind hole provided on a surface of at least one of the support block 300 and the back plate 340 facing the lock block 320. Depending on which surface of the body side wall 322 the guide 350 is provided on, e.g., only the surface of the body side wall 322 facing the support block 300, the guide hole 351 is provided on the surface of the support block 300. Conversely, if provided only on the surface of the body side wall 322 facing the back plate 340, the guide hole 351 is provided on the surface of the back plate 340. If provided at both surfaces of the body side wall 322, guide holes 351 are formed on both the support block 300 and the back plate 340. Or in another possible embodiment, the guide 350 is provided on the surface of the support block 300 facing the locking block 320, and the guide hole 351 is a through hole provided on the body side wall 322.

As shown in fig. 1, the base 130 is provided with a plugging hole 131 matched with the locking mechanism 400. The attachment device 2000 further includes a locking mechanism 400 removably coupled to the housing 130 for securing the housing 130. As shown in fig. 5 to 7, the locking mechanism 400 includes a lock body 410 provided on the support plate 200 and formed with a passage, and a lock pin 420 provided movably in the passage, the lock pin 420 being reciprocally movable relative to the lock body 410 between a second locked position and a second unlocked position. When in the second locking position, the locking pin 420 is inserted into the insertion hole 131 of the housing 130, and the locking mechanism 400 then restricts movement of the medical device 1000 in the second direction L2. When in the second unlocked position, the locking pin 420 is disengaged from the insertion hole 131 of the housing 130, and the medical device 1000 may be removed along the second direction L2.

To define the second locked position and the second unlocked position of the locking pin 420, the locking mechanism 400 further includes a first limit key 421 and a first limit slot 422. The first limit key 421 is disposed on one of the lock body 410 and the lock pin 420, the first limit groove 422 is disposed on the other of the lock body 410 and the lock pin 420, the first limit groove 422 is a strip-shaped groove extending along the movable direction of the lock pin 420, and the cooperation of the first limit key 421 has the functions of limiting and guiding the lock pin 420.

The locking mechanism 400 further includes a mode switch assembly 430 disposed at the first axial end M of the locking pin 420 for securing the locking pin 420 relative to the lock body 410 to stably maintain the second locked position when securing the medical instrument 1000 is desired and for allowing the locking pin 420 to move relative to the lock body 410 to switch to the second unlocked position when unlocking the medical instrument 1000 is desired.

The lock body 410 is further provided with a locking groove 440 for being matched with the base 130, and the locking groove 440 divides the channel of the lock body 410 into two parts positioned at two sides of the locking groove 440, namely a first locking hole 450 close to the mode switching assembly 430 and a second locking hole 460 far away from the mode switching assembly 430.

When the lock pin 420 is in the second locking position, the second end N of the lock pin 420 axially facing away from the mode switching assembly 430 extends into the second locking hole 460, the lock pin 420 is inserted into the insertion hole 131 of the housing 130, and the housing 130 is fixed to the lock body 410. When the locking pin 420 is in the second unlocking position, the second end N of the locking pin 420 is sequentially removed from the second locking hole 460 and the insertion hole 131 of the base 130, and the base 130 can be removed from the lock body 410.

The first limiting groove 422 has a first end and a second end which are aligned with the first end M and the second end N of the locking pin 420. As shown in fig. 5, when the lock pin 420 is in the second locking position, the first limit key 421 abuts against the first end of the first limit groove 422. When the lock pin 420 is in the second unlocking position, the first limit key 421 abuts against the second end of the first limit groove 422. It will be appreciated that when the lock pin 420 is in the second unlocked position, the first limit key 421 may also be in a state not abutting the second end of the first limit groove 422, but in a state close to the second end of the first limit groove 422.

To enable the operator to remove the second end N of the locking pin 420 from the second locking aperture 460 with a small force, a third resilient member 470 is provided in the second locking aperture 460. The third resilient member 470 is used to apply a biasing force to the latch 420 that maintains it in the second unlocked position or always moves to the second unlocked position.

One end of the third elastic member 470 abuts against the inner wall of the lock body 410, and the other end thereof is operatively abutted against or separated from the second end N of the locking pin 420. Specifically, when the lock pin 420 is in the second locking position, the second end N of the lock pin 420 abuts the third elastic member 470. When the locking pin 420 is in the second unlocked position, the second end N of the locking pin 420 is separated from the third elastic member 470. The second locking hole 460 is provided with a movable gasket 480, one end of the third elastic member 470 abuts against the gasket 480, and the second end N of the locking pin 420 is operatively abutted against or separated from the gasket 480.

In order to enable the lock pin 420 to slide smoothly in the passage of the lock body 410, a first self-lubricating bushing 451 is disposed in the first locking hole 450, a second self-lubricating bushing 461 is disposed in the second locking hole 460, and the lock pin 420 is movably inserted into the first self-lubricating bushing 451 and the second self-lubricating bushing 461. The first self-lubricating bush 451 and the second self-lubricating bush 461 are coaxially arranged, the first self-lubricating bush 451 is provided at an end portion of the first locking hole 450 on the side close to the locking groove 440, and the second self-lubricating bush 461 is provided at an end portion of the second locking hole 460 on the side close to the locking groove 440. The purpose of the first 451 and second 461 self-lubricating bushings in the above-described mounting form is: ensuring reliable movement of the locking pin 420 within the through bore makes the first 451 and second 461 self-lubricating bushings more convenient for installation and maintenance.

As shown in fig. 5, the end of the second self-lubricating bushing 461 forms a step for restraining the packing 480. When the locking pin 420 moves out of the second locking hole 460, the gasket 480 is pressed against the step by the third elastic member 470. As the latch 420 continues to move through the second self-lubricating bushing 461 to the latched position, the second end N of the latch 420 pushes the pad 480 forward, thereby compressing the third resilient member 470 to store energy. Thus, when the locking pin 420 is unlocked by the mode switching assembly 430, the elastic potential energy accumulated in the third elastic member 470 due to the compression is released, and thus the pad 480 and the second end N of the locking pin 420 are reversely pushed to move toward the unlocking position, thereby assisting the unlocking of the locking pin 420, and improving the operation convenience.

As shown in fig. 5 and 7, a mounting hole 423 is formed in a first end M of the lock pin 420 in the axial direction, a through hole 424 communicating with the mounting hole 423 is formed in a side wall of the lock pin 420 corresponding to the mounting hole 423, and a positioning slot 411 is formed in an inner wall of the passage. The mode switching assembly 430 includes a ball 431 provided in the through hole 424 of the locking pin 420, a release pin 432 provided in the mounting hole 423 and operable to reciprocate within the mounting hole 423, and a second elastic member 434 provided within the mounting hole 423 and acting on the release pin 432. The release pin 432 has a release slot 433 on its outer side wall and is reciprocally movable between a third locked position and a third unlocked position. One end of the second elastic member 434 abuts against the release pin 432 and the other end abuts against the inner wall of the mounting hole 423, for applying a restoring force to the release pin 432 to maintain it at the third locking position or always have a tendency to move toward the third locking position.

When the release pin 432 is in the third unlocked position, the release slot 433 is aligned with the through hole 424 and the ball 431 may partially enter the release slot 433 radially inward. When the release pin 432 is in the third locking position, the release groove 433 is offset from the through hole 424, and the ball 431 enters and is held in the positioning groove 411 by abutment of the outer wall of the release pin 432.

Further, the mode switching assembly 430 further includes a second limit key 436 and a second limit groove 437, the second limit key 436 is provided on one of the release pin 432 and the lock pin 420, and the second limit groove 437 is provided on the other of the release pin 432 and the lock pin 420. The second limiting groove 437 is an elongated groove extending along the movable direction of the release pin 432, and cooperates with the second limiting key 436 to limit and guide the release pin 432.

The second limit key 436 and the second limit groove 437 define a third locked position and a third unlocked position of the release pin 432. As shown in fig. 5, the extending direction of the second limiting groove 437 is identical to the extending direction of the locking pin 420, and both ends of the second limiting groove 437, that is, the first end and the second end of the second limiting groove 437, the direction of the first end of the second limiting groove 437 is identical to the direction of the first end M of the locking pin 420, and the direction of the second end of the second limiting groove 437 is identical to the direction of the second end N of the locking pin 420. When the second limit key 436 abuts against the second end of the second limit groove 437, the release pin 432 is at the third locking position, the release groove 433 is staggered from the through hole 424, the ball 431 enters and is held in the positioning groove 411 under the abutting action of the outer wall of the release pin 432, the lock pin 420 is at the second locking position, the second end of the lock pin 420 extends into the second locking hole 460, and the seat 130 is fixed on the lock body 410.

When the second limit key 436 abuts against the first end of the second limit groove 437, the release pin 432 is in the third unlocking position, and at this time, the release groove 433 is aligned with the through hole 424, the ball 431 may partially enter the release groove 433 radially inwards, the lock pin 420 may be switched from the second locking position to the second unlocking position, specifically, the lock pin 420 may be pulled in the direction from the second end to the first end, so that the second end of the lock pin 420 is sequentially removed from the second locking hole 460 and the insertion hole 131 of the base 130, and the base 130 may be removed from the lock body 410. To facilitate pulling of the locking pin 420, the first end M of the locking pin 420 is also formed with a handle end 425 for easy grasping by an operator.

The mode switching assembly 430 further includes a third self-lubricating bushing 435 disposed in the passage, as shown in fig. 6, a positioning slot 411 is disposed in the third self-lubricating bushing 435, the positioning slot 411 being recessed on an inner wall of the third self-lubricating bushing 435. The first end M of the locking pin 420 is slidably threaded to the third self-lubricating bushing 435, and the first end M of the locking pin 420 is partially located outside the first end of the lock body 410 after passing through the third self-lubricating bushing 435. The first end M of the locking pin 420, the middle region of the locking pin 420, and the second end N of the locking pin 420 are lubricated by the third self-lubricating bushing 435, the first self-lubricating bushing 451, and the second self-lubricating bushing 461, respectively, thereby reducing the anti-rattle feeling of the movement of the locking pin 420.

Having fully described the structure of the attachment device 2000 above, one skilled in the art will understand the following installation procedure: the operator aligns the guide wing 120 of the medical apparatus 1000 with the slideway 310 of the supporting block 300, so that the guide wing 120 is inserted into the slideway 310, and the stability and reliability of connection can be effectively enhanced by adopting a mode of double mounting points of the guide wing 120 and the seat 130, and meanwhile, the medical apparatus 1000 can have better supporting stress condition. In addition, the detachable connection mode is adopted between the guide wings 120 and the supporting block 300 and between the seat body 130 and the locking mechanism 400, so that the medical apparatus 1000 can be conveniently installed on the attachment device 2000, and the advantage of convenient installation is achieved.

It will be understood by those skilled in the art that the present invention is not limited to the details of the foregoing exemplary embodiments, but includes other specific forms of the same or similar structures that may be embodied without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims (17)

1. A device for attaching a medical instrument attachable to the device in an assembly direction, comprising: the device comprises a shell, a guide wing arranged on one side of the shell along the assembly direction, and a seat body arranged at the bottom of the shell along the assembly direction; characterized in that the device comprises:

The support plate is provided with a locking mechanism which is detachably connected with the seat body;

The support block is arranged on the support plate and provided with a slideway which is used for being matched with the guide wing, and the slideway limits the assembly direction;

Wherein the medical instrument is configured to stop when the guide wings are inserted into the slideway and moved in the assembly direction until the seat body contacts the support plate;

The slide way is matched with the guide wing to fix the medical instrument along any first direction perpendicular to the assembling direction, and the locking mechanism is matched with the seat body to fix the medical instrument along a second direction opposite to the assembling direction.

2. The device according to claim 1, wherein the support block is provided with a locking block operable to reciprocate between a first locked position and a first unlocked position in a third direction perpendicular to the assembly direction;

The locking block cooperates with the guide wing when in the first locking position, the guide wing being secured to the support block;

When in the first unlocked position, the locking block is disengaged from the guide wing, which can be removed from the support block.

3. The device according to claim 2, wherein the guide wing is provided with a clamping groove; the supporting block is provided with a penetrating hole communicated with the slideway, the locking block is provided with a limiting block, and the limiting block is at least partially positioned in the penetrating hole;

when the locking block is positioned at the first locking position, the locking end of the limiting block extends out from the penetrating hole to enter the slideway and is embedded into the clamping groove;

when the locking piece is in the first unlocking position, the locking end of the limiting block is retracted into the penetrating hole and is separated from being matched with the clamping groove.

4. A device according to claim 3, wherein a first resilient member is provided between the lock block and the support block, the first resilient member being adapted to apply a restoring force to the lock block which maintains it in the first locking position or which always has a tendency to move towards the first locking position.

5. The device of claim 4, wherein the stopper has a guide slope, potential energy of which gradually increases along the fitting direction;

When the medical device is operated so that the guide wing moves in the assembling direction in the slideway until the locking end contacts the guide inclined surface, the locking block is driven to move to the first unlocking position;

when the medical instrument is operated so that the guide wings continue to move along the assembling direction to the locking ends corresponding to the clamping grooves, the locking blocks are restored to the first locking positions under the action of the restoring force exerted by the first elastic pieces.

6. The apparatus of claim 4, wherein the locking block is a U-shaped structure comprising: a main body side wall extending along the third direction, a first side wall and a second side wall positioned at two ends of the main body side wall along the third direction; the supporting block stretches into the U-shaped opening of the locking block, so that the first side wall and the second side wall are symmetrically distributed on two sides of the supporting block along the assembly direction;

One end of the first elastic piece is abutted against the supporting block, and the other end of the first elastic piece is abutted against the inner surface of the first side wall;

The limiting block is arranged on the inner surface of the second side wall.

7. The device according to claim 2, characterized in that the support plate is provided with a back plate, against which the support block is arranged in a vertical manner; the surface of the supporting block facing the backboard is provided with a groove, and the side wall of the main body of the locking block is slidably embedded in the groove.

8. The device according to claim 7, wherein a guide member is provided on the side wall of the main body, the lock block and/or the back plate has a guide hole adapted to the guide member, the guide hole is a long hole extending in the third direction, and the guide member is slidably provided in the guide hole.

9. The device of claim 1, wherein the support block is made of a self-lubricating material; or a fourth self-lubricating bushing is arranged in the supporting block, and the slideway is formed in the fourth self-lubricating bushing.

10. The device according to claim 1, wherein the bottom of the supporting block along the assembling direction is provided with a fixed block, and a stepped hole penetrating along the assembling direction is arranged in the fixed block;

the fixed block is provided with a floating assembly comprising: the spring is arranged in the stepped hole, the screw cap connected with the screw, and the two ends of the spring are respectively abutted against the screw cap and the steps in the stepped hole.

11. The device according to claim 1, wherein the housing is provided with a socket;

the locking mechanism is used for fixing the seat body and comprises:

The lock body is arranged on the supporting plate and is provided with a channel;

a lock pin disposed in the passage and reciprocally movable between a second locked position and a second unlocked position; when the locking pin is positioned at the second locking position, the locking pin penetrates into the inserting hole; and when the locking pin is in the second unlocking position, the locking pin is separated from the inserting hole.

12. The apparatus of claim 11, wherein the locking mechanism further comprises a mode switching assembly for securing the locking pin relative to the lock body to be stably maintained in the second locked position when the medical instrument is desired to be secured, and for enabling the locking pin to be moved relative to the lock body to switch to the second unlocked position when the medical instrument is desired to be unlocked.

13. The device of claim 12, wherein the locking pin has a mounting hole formed in a first end thereof in an axial direction, and the locking pin has a through hole communicating with the mounting hole in a side wall corresponding to the mounting hole; the inner wall of the channel is provided with a positioning groove;

The mode switching assembly includes:

A ball disposed in the through hole;

A release pin disposed in the mounting hole and operable to reciprocate between a third locked position and a third unlocked position, the release pin having a release slot on an outer sidewall thereof;

A second elastic member provided in the mounting hole, one end of the second elastic member abutting the release pin, and the other end abutting the inner wall of the mounting hole, for applying a restoring force to the release pin so as to maintain the release pin in the third lock position or so as to always have a tendency to move toward the third lock position;

When the release pin is in a third unlocked position, the release slot is aligned with the through hole, the ball may partially enter the release slot radially inward;

When the release pin is in the third locking position, the release groove is staggered from the through hole, and the ball enters and is kept in the positioning groove under the abutting action of the outer wall of the release pin.

14. The apparatus of claim 13, wherein the mode switching component further comprises: the lock pin slidably penetrates through the third self-lubricating bushing, and the positioning groove is formed in the inner wall of the third self-lubricating bushing.

15. The device according to claim 13, wherein the lock body is further provided with a locking groove for cooperation with the seat body, the locking groove dividing the channel into two parts on both sides thereof: a first locking aperture proximate to the mode switching assembly and a second locking aperture distal to the mode switching assembly;

When the lock pin is in a second locking position, a second end of the lock pin, which is axially opposite to the mounting hole, extends into the second locking hole; the second end of the locking pin is removed from the second locking aperture when the locking pin is in the second unlocked position.

16. The device of claim 15, wherein a third resilient member is disposed within the second locking aperture, one end of the third resilient member abutting an inner wall of the lock body and the other end being operatively abutted or separated from the second end of the locking pin for exerting a biasing force on the locking pin to maintain it in the second unlocked position or to always move to the second unlocked position.

17. The device of claim 16, wherein a first self-lubricating bushing is disposed within the first locking aperture and a second self-lubricating bushing is disposed within the second locking aperture; the lock pin is movably arranged on the first self-lubricating bushing and the second self-lubricating bushing in a penetrating way;

a movable gasket is arranged in the second locking hole, one end of the third elastic piece is abutted against the gasket, and the second end of the lock pin is operably abutted against or separated from the gasket.