Second movement implementation mechanism and pH capsule operation device

Abstract

The utility model relates to the technical field of medical instruments, in particular to a second-order movement implementation mechanism and a pH capsule operation device. The second movement implementation mechanism comprises a shell, a first movable shaft and a second movable shaft are arranged in the shell, a first limiting mechanism is arranged on the first movable shaft, and a first limiting matching mechanism matched with the first limiting mechanism is arranged on the second movable shaft; a third limiting mechanism is arranged on the shell, and a third limiting matching mechanism matched with the third limiting mechanism is arranged on the first movable shaft. The device is simple in structure, easy to assemble and disassemble and high in efficiency, other tools are not needed, meanwhile, misoperation can be prevented, and secondary movement is achieved; when the device is applied to a pH capsule operation device, a doctor can operate with one hand, the operation is simple and convenient, and the whole movement process can be completed by pressing twice.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a sequential motion realization mechanism and a pH capsule operating device. Background Art

[0002] In the mechanical field, especially in the field of medical devices, sequential movement of devices is often required, that is, the output end of the device movement must meet the order of output, and disorder is not allowed, otherwise the medical effect cannot be achieved or the medical device will be scrapped. For example, pH capsules are commonly used medical devices for the treatment of reflux esophagitis. When in use, the pH capsule is first fixed to the human esophagus with a pH capsule operating device. Compared with edible drugs, the therapeutic effect is better. When in use, the pH capsule must be fixed to the inner wall of the esophagus first. After the drug is delivered, the other parts (such as the conveyor) are taken out. If the action sequence is incorrect (take out first, then fix), the detection capsule will be scrapped. Because the capsule must be moved first, fixed to the inner wall of the esophagus, and then the detection capsule must be separated from the other parts. After separation, the other parts can be pulled out of the esophagus.

[0003] In the prior art, sequential control is often achieved by changing the linear translation motion into up and down motion, but its structure is complex, the assembly is slow, and the doctor cannot operate it with one hand.

[0004] Therefore, those skilled in the art are committed to developing a sequential motion realization mechanism and a pH capsule operating device with a simple structure. Utility Model Content

[0005] In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is to provide a sequential motion realization mechanism and a pH capsule operating device with a simple structure.

[0006] To achieve the above-mentioned purpose, the utility model provides a sequential motion realization mechanism, including a shell, a first movable shaft and a second movable shaft are arranged in the shell, a first limiting mechanism is arranged on the first movable shaft, and a first limiting matching mechanism cooperating with the first limiting mechanism is arranged on the second movable shaft; a third limiting mechanism is arranged on the shell, and a third limiting matching mechanism cooperating with the third limiting mechanism is arranged on the first movable shaft. The utility model sets the first limiting mechanism and the first limiting matching mechanism on the first movable shaft and the second movable shaft, so that the positions of the first movable shaft and the second movable shaft are relatively fixed in the initial state, and the movement of the second movable shaft is first limited by the first limiting mechanism. That is, in the utility model, only the first movable shaft can move first, and the limitation of the second limiting mechanism can be released, and the second movable shaft can move. The sequential movement of the first movable shaft and the second movable shaft is realized, and the situation that the second movable shaft moves first due to misoperation can be avoided. At the same time, in the utility model, the movement of the first movable shaft is limited by the third limiting mechanism, so that the movement of the first movable shaft can be operated and controlled.

[0007] Preferably, the housing is provided with a second limiting mechanism, and the second movable shaft is provided with a second limiting mechanism cooperating with the second limiting mechanism. By such arrangement, when the first limiting mechanism releases the limitation, the second movable shaft is still limited by the second limiting mechanism on the housing. The second movable shaft can move only when the operator releases the limitation of the second limiting mechanism.

[0008] Preferably, the first position-limiting mechanism is a first protruding portion arranged on the first movable shaft, and the first position-limiting matching mechanism is a first external protruding portion arranged on the second movable shaft, and the first external protruding portion ends above the first protruding portion. The first protruding portion and the first external protruding portion cooperate with each other, and because the first external protruding portion ends above the first protruding portion, the first protruding portion is arranged at one end close to the moving direction, and the first external protruding portion is relatively arranged at one end away from the moving direction. Therefore, due to the blocking effect of the first protruding portion, when the first protruding portion does not move, the first external protruding portion cannot move.

[0009] Preferably, the second limiting mechanism comprises a lower pressing block elastically connected to the housing, and the lower pressing block is provided with a lower convex block; the second limiting matching mechanism is a second outer convex portion provided on the second movable shaft. Through the limitation of the lower pressing block, when the lower pressing block is not released from the restriction, even if the first limiting mechanism releases the restriction, the second movable shaft will not move, thereby further preventing misoperation and improving the safety of the operation.

[0010] Preferably, the third limiting mechanism comprises an upper pressing block elastically connected to the housing, and the upper pressing block is provided with an upper protrusion; the third limiting matching mechanism is a third outer protrusion provided on the first movable shaft.

[0011] The third limiting mechanism limits the first movable shaft. The utility model can be started by simply releasing the third limiting mechanism to make the first movable shaft move.

[0012] Preferably, the first movable shaft and the second movable shaft are respectively provided with a first stopper and a second stopper in the direction of the housing, and the housing is respectively provided with a first limiting rib and a second limiting rib cooperating with the first stopper and the second stopper, so as to limit the movement ends of the first movable shaft and the second movable shaft.

[0013] Preferably, the tail ends of the first movable shaft and the second movable shaft are respectively provided with a first flat portion and a second flat portion, the tail end of the outer shell is provided with a bushing, the bushing is respectively provided with a first flat anti-foolproof hole and a second flat anti-foolproof hole matching with the first flat portion and the second flat portion, and the inner wall of the outer shell is provided with a bushing limiting rib matching with the bushing.

[0014] Preferably, the front ends of the first movable shaft and the second movable shaft are respectively sleeved with a first spring and a second spring, one end of the first spring and the second spring respectively abut against the third outer protrusion of the first movable shaft and the second outer protrusion of the second movable shaft, and the other end abuts against the top cover of the outer shell.

[0015] Preferably, the top cover is threadedly matched with the outer shell, and the top cover is respectively provided with a first guide hole and a second guide hole for the first movable shaft to pass through and a second movable shaft to pass through; the rear portion of the outer shell is threadedly connected with a tail cover.

[0016] The utility model also provides a pH capsule operating device, comprising the sequential motion realization mechanism as described above, wherein the top ends of the first movable shaft and the second movable shaft are connected with a first steel wire and a second steel wire.

[0017] The beneficial effects of the utility model are as follows: the utility model has a simple structure, is easy to assemble and disassemble, has high efficiency, does not require the aid of other tools, and can prevent misoperation and achieve sequential movement; when applied to the pH capsule operating device, the doctor can operate it with one hand, the operation is simple, and the entire movement process can be completed by pressing twice. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of a specific implementation method of the pH capsule operating device of the utility model.

[0019] Figure 2 It is a front view structural schematic diagram of a specific implementation mode of the pH capsule operating device of the utility model.

[0020] Figure 3 yes Figure 2 Schematic diagram of the cross-sectional structure along line AA.

[0021] Figure 4 yes Figure 3 Schematic diagram of the enlarged structure at point B in the middle.

[0022] Figure 5 yes Figure 3 Schematic diagram of the enlarged structure at point C in the middle.

[0023] Figure 6 This is a schematic diagram of the matching structure of the first movable shaft, the second movable shaft and the bushing in a specific embodiment of the pH capsule operating device of the utility model. DETAILED DESCRIPTION

[0024] The present invention is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", "inner", "outer", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific manner, and therefore cannot be understood as a limitation on the present invention. The terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0025] like Figures 1 to 3 As shown, a sequential motion realization mechanism includes a housing 3, a first movable shaft 1 and a second movable shaft 2 are arranged in the housing 3, a first limit mechanism is arranged on the first movable shaft 1, a first limit matching mechanism cooperating with the first limit mechanism is arranged on the second movable shaft 2, a second limit mechanism is arranged on the housing 3, and a second limit matching mechanism cooperating with the second limit mechanism is arranged on the second movable shaft 2. To facilitate assembly and disassembly, in this embodiment, the housing 3 can be composed of two semicircular thin-walled shells.

[0026] In this embodiment, Figure 3 and Figure 4 As shown, the first position-limiting mechanism is a first protruding portion 11 provided on the first movable shaft 1, and the first position-limiting matching mechanism is a first outer protruding portion 21 provided on the second movable shaft 2, and the end of the first outer protruding portion 21 is above the first protruding portion 11. Under normal conditions, the first protruding portion 11 extends out to block below the first outer protruding portion 21, that is, when the first protruding portion 11 is not moving, due to its blocking effect, the first outer protruding portion 21 and the second movable shaft cannot move, and the first movable shaft 1 can only move first and then the second movable shaft 2 can move in sequence.

[0027] In this embodiment, the second limiting mechanism includes a lower pressing block 31 elastically connected to the outer shell 3, and a lower protrusion 32 is arranged on the lower pressing block 31. The second limiting matching mechanism is a second outer protrusion 22 arranged on the second movable shaft 2. Under normal conditions, the second outer protrusion 22 abuts against the upper part of the lower protrusion 32. Even after the restriction is released by the first limiting mechanism (first protrusion 11), when the lower pressing block 31 is not pressed, the second movable shaft 2 still cannot move due to the restriction of the second limiting mechanism, so that the activity time of the second movable shaft 2 can be artificially controlled to avoid misoperation. The lower pressing block 31 is elastically connected to the outer shell 3. Specifically in this embodiment, as shown in FIG. Figures 2 to 4 As shown, the shell 3 is made of plastic, and the shell 3 is connected to the lower pressing block 31 through connecting ribs 305 (also plastic) arranged on both sides of the lower pressing block 31. Since the plastic has elastic force, an elastic connection can be formed. Therefore, when the tail end of the lower pressing block 31 is pressed, the lower protrusion 32 located at the head end of the lower pressing block 31 can be tilted, thereby releasing the restriction on the second outer protrusion 22 and allowing the second movable shaft 2 to move. In other embodiments, the elastic connection between the lower pressing block 31 and the shell 3 is not limited to being realized by using the connecting ribs 305 of plastic, and other elastic materials can also be used, or the lower pressing block 31 and the shell 3 can be connected mechanically by a screw rod or the like. When a screw rod is used, the two ends of the screw rod are spirally connected to the lower pressing block 31 and the shell 3. The rotatability and certain stability of the thread can be used to realize the elastic connection between the lower pressing block 31 and the shell 3.

[0028] like Figure 3 and Figure 4 As shown, a third limiting mechanism is provided on the housing 3, and a third limiting matching mechanism that matches with the third limiting mechanism is provided on the first movable shaft 1. In this embodiment, the third limiting mechanism includes an upper pressing block 33 elastically connected to the housing 3, an upper protrusion 34 is provided on the upper pressing block 33, and the third limiting matching mechanism is a third outer protrusion 12 provided on the first movable shaft 1, and the upper pressing block 33 is elastically connected to the housing 3. The connection method between the upper pressing block 33 and the housing 3 is the same as the connection method between the lower pressing block 31 and the housing 3. In normal state, the third outer protrusion 12 is provided above the upper protrusion 34. Under the obstruction of the upper protrusion 34, the third outer protrusion 12 cannot move downward, so that the first movable shaft 1 cannot move, thereby limiting the free movement of the first movable shaft.

[0029] like Figure 3 As shown, the first movable shaft 1 and the second movable shaft 2 are respectively provided with a first stopper 13 and a second stopper 23 in the direction of the housing 3, and the housing 3 is respectively provided with a first limiting rib 35 and a second limiting rib 36 that cooperate with the first stopper 13 and the second stopper 23. The first limiting rib 35 and the second limiting rib 36 cooperate with the first stopper 13 and the second stopper 23 to facilitate limiting the stop after the first movable shaft 1 and the second movable shaft 2 are completed, so as to improve the overall safety.

[0030] like Figure 3 and Figure 5 , Figure 6 As shown, the first movable shaft 1 and the second movable shaft 2 are respectively provided with a first flat portion 16 and a second flat portion 26 at the tail end, a bushing 37 is provided at the tail end of the housing 3, the bushing 37 is respectively provided with a first flat foolproof hole 381 and a second flat foolproof hole 382 that cooperate with the first flat portion 16 and the second flat portion 26, and the inner wall of the housing is provided with a bushing limiting rib 39 that cooperates with the bushing 37. The bushing 37 can fix the first movable shaft 1 and the second movable shaft 2, and at the same time play a role in positioning and foolproofing the two shafts.

[0031] like Figure 3 As shown, the front ends of the first movable shaft 1 and the second movable shaft 2 are respectively sleeved with a first spring 15 and a second spring 25, one end of the first spring 15 and the second spring 25 respectively abuts against the third outer protrusion 12 of the first movable shaft 1 and the second outer protrusion 22 of the second movable shaft 2, and the other end abuts against the top cover 301 of the housing. In order to increase the reliability of the first spring 15 and the second spring 25, the third outer protrusion 12 and the second outer protrusion 22 in this embodiment are as shown in FIG. Figure 2 As shown, it is arranged in a circular ring shape and is respectively arranged on the outer edges of the first movable axis 1 and the second movable axis 2.

[0032] like Figure 1 and Figure 3 As shown, the top cover 301 is threadedly matched with the outer shell 3, and the top cover 301 is respectively provided with a first guide hole 302 and a second guide hole 303 for the first movable shaft 1 and the second movable shaft 2 to pass through, and the tail cover 304 is threadedly connected to the rear of the outer shell 3. In this embodiment, the top cover 301 and the tail cover 304 are designed in a native nut manner and are threadedly connected to the outer shell 3, making the utility model easier to disassemble, especially when an accident occurs during the doctor's operation, the entire product can be disassembled by hand without the help of tools, which can effectively shorten the time to solve the accident (finding tool time). A better top cover 301 is provided with a first guide hole 302 and a second guide hole 303 for positioning and guiding the first movable shaft 1 and the second movable shaft 2, which can facilitate the axial movement of the two shafts.

[0033] The utility model also provides a pH capsule operating device, comprising the above sequential motion realization mechanism, a first steel wire 41 and a second steel wire 42 connected to the top of the first movable shaft 1 and the second movable shaft 2. Specifically in this embodiment, threads are provided at the ends of the first movable shaft 1 and the second movable shaft 2, so that they can be connected to corresponding steel wire nuts 5 respectively, and the first steel wire 41 and the second steel wire 42 can be connected through the two steel wire nuts 5.

[0034] The utility model is very simple to assemble. First, tighten the shell 3 and the top cover 301, and respectively sleeve the first spring 15 and the second spring 25 on the first movable shaft 1 and the second movable shaft 2, and then put the shell 3 into the shell. Under the action of the first guide hole 302 and the second guide hole 303 of the top cover 301, the two shafts are radially positioned. Put the bushing 37 into the shell, and pay attention to the matching of the first flat fool-proof hole 381 and the second flat fool-proof hole 382 with the first movable shaft 1 and the second movable shaft 2. Under the action of the bushing limiting rib 39 on the inner wall of the shell 3, the bushing 37 is axially limited. Screw the tail cover 304, and connect it to the first steel wire 41 and the second steel wire 42 through the steel wire nut 5, so that the pH capsule operating device of the utility model is assembled.

[0035] After the installation is complete, if there is no action, such as Figure 3 As shown, when work is required, first press the upper pressing block 33 to tilt the upper protrusion 34, thereby releasing the first movable shaft 1 under the elastic force of the first spring 15, so that the first movable shaft 1 moves axially backward, thereby pulling the first steel wire 41 to move axially. Since the first spring 15 has a pre-stressed elastic force, the first steel wire 41 will not rebound after the movement. When the first stopper 13 of the first movable shaft 1 retreats to the first limiting rib 35, the movement is limited by the first limiting rib 35. After the first movable shaft 1 moves, the first protrusion 11 moves downward, and the first outer protrusion 21 is released, so that the second movable shaft 2 can make the next axial movement. If the first movable shaft 1 has not moved, even if the lower pressing block 31 of the housing 3 in the direction of the second movable shaft 2 is pressed, the second movable shaft 2 cannot move. The action principle of the second movement can be realized.

[0036] When the second movable shaft 2 needs to move, the lower pressing block 31 is pressed to make the lower protrusion 32 tilt up, so that the second movable shaft 2 is released under the elastic force of the second spring 25, so that the second movable shaft 2 moves axially backward, thereby pulling the second steel wire 42 to move axially. Since the spring has a pre-stressed elastic force, the second steel wire 42 will not rebound after moving.

[0037] The utility model has a simple structure and a simple assembly process. It is easy to assemble and disassemble. The doctor can operate the utility model with one hand, that is, the whole movement process can be completed by pressing twice. Under the pre-pressure of the spring, the problem of rebound of the steel wire after movement is solved. In addition, the time loss caused by finding tools (the structure can be disassembled by hand) in case of medical accidents is solved. The mechanism is easy to assemble and manufacture. The processing precision does not need to be very high. It can be machined and manufactured by mold making, so as to achieve the problem of high product consistency.

[0038] The preferred specific embodiments of the utility model are described in detail above. It should be understood that ordinary technicians in this field can make many modifications and changes based on the concept of the utility model without creative work. Therefore, all technical solutions that can be obtained by technicians in this technical field based on the concept of the utility model through logical analysis, reasoning or limited experiments on the basis of the existing technology should be within the scope of protection determined by the claims.

Claims

1. A sequential motion realization mechanism, characterized by: The invention comprises a shell (3), wherein a first movable shaft (1) and a second movable shaft (2) are arranged inside the shell (3), the first movable shaft (1) is provided with a first position limiting mechanism, and the second movable shaft (2) is provided with a first position limiting matching mechanism matching with the first position limiting mechanism; the shell (3) is provided with a third position limiting mechanism, and the first movable shaft (1) is provided with a third position limiting matching mechanism matching with the third position limiting mechanism.

2. The sequential motion realization mechanism according to claim 1, characterized in that: The housing (3) is provided with a second position limiting mechanism, and the second movable shaft (2) is provided with a second position limiting matching mechanism matching with the second position limiting mechanism.

3. The sequential motion realization mechanism according to claim 1, characterized in that: The first limiting mechanism is a first protruding portion (11) arranged on the first movable shaft (1), and the first limiting matching mechanism is a first outer protruding portion (21) arranged on the second movable shaft (2), and the end of the first outer protruding portion (21) is above the first protruding portion (11).

4. The sequential motion realization mechanism according to claim 2, characterized in that: The second limiting mechanism comprises a lower pressing block (31) elastically connected to the housing (3), and a lower protrusion (32) is arranged on the lower pressing block (31); the second limiting matching mechanism is a second outer protrusion (22) arranged on the second movable shaft (2).

5. The sequential motion realization mechanism according to claim 1, characterized in that: The third limiting mechanism comprises an upper pressing block (33) elastically connected to the housing (3), and an upper protrusion (34) is arranged on the upper pressing block (33); the third limiting matching mechanism is a third outer protrusion (12) arranged on the first movable shaft (1).

6. The sequential motion realization mechanism according to claim 1, characterized in that: The first movable shaft (1) and the second movable shaft (2) are respectively provided with a first stopper (13) and a second stopper (23) in the direction of the outer shell (3), and the outer shell (3) is respectively provided with a first limiting rib (35) and a second limiting rib (36) which cooperate with the first stopper (13) and the second stopper (23).

7. The sequential motion realization mechanism according to claim 1, characterized in that: The tail ends of the first movable shaft (1) and the second movable shaft (2) are respectively provided with a first flat portion (16) and a second flat portion (26); the tail end of the shell (3) is provided with a bushing (37); the bushing (37) is respectively provided with a first flat anti-foolproof hole (381) and a second flat anti-foolproof hole (382) which cooperate with the first flat portion (16) and the second flat portion (26); the inner wall of the shell (3) is provided with a bushing limiting rib (39) which cooperates with the bushing (37).

8. The sequential motion realization mechanism according to claim 1, characterized in that: The front ends of the first movable shaft (1) and the second movable shaft (2) are respectively sleeved with a first spring (15) and a second spring (25); one end of the first spring (15) and the second spring (25) respectively abut against the third outer protrusion (12) of the first movable shaft (1) and the second outer protrusion (22) of the second movable shaft (2), and the other end abuts against the top cover (301) of the outer shell.

9. The sequential motion realization mechanism according to claim 8, characterized in that: The top cover (301) is threadedly matched with the outer shell (3); the top cover (301) is respectively provided with a first guide hole (302) and a second guide hole (303) for the first movable shaft (1) and the second movable shaft (2) to pass through; the rear part of the outer shell (3) is threadedly connected with a tail cover (304).

10. A pH capsule operating device, comprising the sequential motion realization mechanism according to any one of claims 1 to 9, characterized in that: The top ends of the first movable shaft (1) and the second movable shaft (2) are connected to a first steel wire (41) and a second steel wire (42).

Images