CN219809371U - Adjusting device for adjusting damping coefficient of transmission mechanism - Google Patents

Abstract

The utility model discloses an adjusting device for adjusting a damping coefficient of a transmission mechanism, which comprises a base, a retaining mechanism and an actuating mechanism, wherein the retaining mechanism comprises a first component, a second component which is detachable relative to the first component and a cavity formed in the first component and the second component, the cavity is used for accommodating a detachable cover plate of the transmission mechanism for subsequent processing, one of the first component and the second component is provided with a notch which is communicated with the cavity, and the actuating mechanism can contact the detachable cover plate through the notch and press the detachable cover plate orthogonally to the detachable cover plate. By the device, the requirement of the transmission mechanism for additional parts is eliminated, the structure of the transmission mechanism is simplified, and the assembly workload and the overall cost of the medical instrument are reduced.

Description

Adjusting device for adjusting damping coefficient of transmission mechanism

Technical Field

The utility model relates to the field of medical instruments, in particular to an adjusting device for adjusting a damping coefficient of a transmission mechanism of a telescopic part of a medical instrument.

Background

Medical instruments such as endoscopes or laser treatment instruments are commonly available in the market, having a telescoping member such as an examination member or laser fiber extending into the patient, and a physician manipulating the telescoping member into the length of a section of the patient using a drive mechanism of the telescoping member such as a rack and pinion mechanism. When it is necessary to leave the telescoping member in a particular position within the patient, the physician stops manipulating the telescoping member's drive mechanism. However, there is a risk that if the damping of the transmission is insufficient, the telescoping members will spontaneously slide into or out of the patient during the period of time that the physician ceases to maneuver, with the result that the physician cannot leave the telescoping members in the desired position within the patient for the intended examination or treatment, and may cause secondary damage to tissue within the patient by the telescoping members.

Chinese patent No. CN111067469B discloses a self-locking mechanism for bending angle of endoscope, which can be automatically selected by a doctor to start the self-locking function of the operation knob for bending angle of endoscope, so that the bending part at the front end of endoscope is aligned to the lesion position and kept still. Another common solution in the prior art is that the transmission mechanism comprises a ratchet wheel arranged at one side of the gear wheel or a damping shaft penetrating through the shaft hole of the gear wheel, thereby realizing self-locking of the gear wheel in the transmission mechanism and implementing adjustment of damping of the gear wheel.

However, the prior art including the above documents brings new technical problems: in order to achieve self-locking and damping adjustment of the transmission, the arrangement of the additional components requires a larger installation space, which in turn deviates to a certain extent from the portability and ease of operation of this type of medical device; in addition, prior art self-locking or damping adjustment mechanisms typically require the mating of multiple components, a complex number of components and complex assembly relationships with each other, resulting in an increase in the overall manufacturing costs of the medical device.

Disclosure of Invention

In order to overcome at least one of the drawbacks of the prior art described above, an object of the present utility model is to provide an adjustment device for adjusting the damping coefficient of a transmission.

According to the present utility model there is provided an adjustment device for adjusting the damping coefficient of a transmission mechanism for a telescopic member of a medical apparatus, comprising a base, a holding mechanism and an actuator, wherein the holding mechanism comprises a first member, a second member which is removable with respect to the first member, and a cavity formed in the first member and the second member for receiving a removable cover of the transmission mechanism, one of the first member and the second member being provided with a gap opening into the cavity, the actuator being capable of contacting the removable cover through the gap and pressing the removable cover orthogonally to the removable cover, wherein the transmission mechanism comprises at least one transmission member and the removable cover covering it.

In an embodiment, the transmission mechanism further comprises a transmission member covering at least a portion of the transmission member when the removable cover is assembled.

In another embodiment, one of the first and second components is fixedly mounted to the base, while the other of the first and second components does not have a direct connection with the base.

In a further embodiment, the first and second parts are detachably connected to each other by a threaded connection.

In a further embodiment, the cavity comprises a step facing the actuator for supporting a peripheral edge of the removable cover plate.

In a further embodiment, one of the first and second parts, remote from the actuator, comprises a recess surrounded by the step, the recess being in a direction coincident with the direction of advancement of the actuator, such that the removable cover within the cavity is deformable.

In a further embodiment, one of the first and second parts, remote from the actuator, further comprises a through hole and a locating member, wherein the through hole is coaxial with the actuator and the locating member is positionable at any depth of insertion into the through hole.

In yet another embodiment, the detent is resilient to allow the actuator to continue to bear against the removable cover as the removable cover is being pressed into contact with the detent.

In a further embodiment, the actuator is configured in cross-sectional shape such that it cannot extend into the through-hole.

In yet another embodiment, the actuator is a dial indicator.

The adjusting device for adjusting the damping coefficient of the transmission mechanism of the telescopic part of the medical instrument, disclosed by the utility model, eliminates the need for additional parts, simplifies the structure of the transmission mechanism, and thus reduces the assembly workload and the overall cost of the medical instrument; the damping coefficient of the transmission is linked to the degree of tightness of the contact between the removable cover plate and the transmission member, which is determined by the thrust stroke of the actuator of the adjustment device, which means that the damping coefficient of the transmission is established before the practitioner performs the examination or treatment, thus saving the practitioner in adjusting the damping coefficient of the transmission during the examination or treatment; the dial indicator of the actuator allows the operator to precisely recognize the extension of the actuator, which means that the deformation of the removable cover is precisely controlled, thereby promoting the transmission to achieve the precise desired damping coefficient.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 shows a schematic view of a medical device including a telescoping member transmission mechanism;

FIGS. 2a and 2b show cross-sectional views of the transmission of FIG. 1, without and with the adjustment device, respectively;

FIG. 3 shows a perspective view of an adjustment device according to an embodiment of the utility model; and

fig. 4 shows an exploded view of an adjusting device according to an embodiment of the utility model, wherein the cavity accommodates a detachable cover plate of the transmission mechanism.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be understood that the terms "X-axis," "Y-axis," "Z-axis," "vertical," "parallel," "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," etc. indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

As shown in fig. 1, the transmission mechanism 101 is configured to adjust the size of a telescoping member of the medical instrument 100, such as an examination member or a length of a section of a laser fiber that extends into a patient. Based on the purpose of use of the medical device 100, it is necessary to provide the telescopic members with a transmission mechanism 101 having a sufficient damping coefficient, and in order to meet the demand for portability and easy operability during use of the medical device 100, the transmission mechanism 101 herein contains a small number of parts, and the assembly relationship between the respective parts is relatively simple.

As shown in fig. 2a, initially, the removable cover 102 of the transmission 101 is left unprocessed, still in a planar state. In the present case, the detachable cover plate 102 is at a distance d from the transmission part 103 of the transmission 101, for example a gear and/or a rack.

In order to bring the detachable cover plate 102 into contact with the transmission member 103 of the transmission mechanism 101, thereby obtaining a damping coefficient required for the transmission mechanism 101, it is necessary to perform a specific process on the detachable cover plate 102.

As shown in fig. 3 and 4, the adjustment device 200 for handling the removable cover 102 of the transmission mechanism 101 includes a base 201, a holding mechanism including a first member 203, a second member 204 that is removable with respect to the first member 203, and a cavity (not shown) formed in the first member 203 and the second member 204 for receiving the removable cover 102 for subsequent processing. In the illustrated embodiment, the first member 203 is fixedly mounted to the base 201, while the second member 204 is not directly connected to the base 201, but is connected to the first member 203 by fasteners, such as bolts 205, for example, and is thereby indirectly mounted to the base 201. It is noted that in other embodiments, the opposite configuration is also possible with respect to the first member 203 and the second member 204.

One of the parts of the holding means, in this embodiment the first part 203, which is closer to the actuator 202, is provided with a notch 206 leading to the cavity, through which notch 206 the actuator 202, in particular its push rod, contacts the detachable cover plate 102. During the press bending process on the removable cover 102, the actuator 202 is extended so as to press the latter orthogonally to the removable cover 102.

To ensure that the removable cover 102 can be crimped, the cavity contains redundant space that allows the removable cover 102 to deform therein. Specifically, the cavity includes a step facing the actuator 202 that cooperates with an inner surface of the cavity closer to the actuator 202 to hold the removable cover 102 in place. During the press bending process, the actuator 202 protrudes and orthogonally presses the detachable cover plate 102, since the region of the second member 204 other than the portion (i.e., step) in contact with the peripheral edge of the detachable cover plate 102 is formed as a recess, which corresponds to the above-described redundant space, so that the detachable cover plate 102 in the cavity is deformable here. It should be noted that in other embodiments, other configurations of notches, steps, and redundant spaces (e.g., recesses) are possible. For the purpose of enabling the removable cover 102 to be crimped, the direction of the recess follows the direction of advancement of the actuator 202.

The second part 204 further comprises a through hole 207 and a positioning member 208, wherein the through hole 207 is coaxial with the actuator 202 and the positioning member 208 can be inserted at any depth of the through hole 207. In contrast, the actuator 202 includes a dial indicator. In this way, the operator can either precisely adjust the extension stroke of the actuator 202 using a dial indicator or position the positioning member 208 to a desired depth via, for example, a stop threaded connection or other form of stop, wherein the operator manipulates the actuator 202 to extend until the removable cover 102 contacts the positioning member 208, where the positioning member 208 acts as a mechanical stop for the actuator 202 and a deformation endpoint for the removable cover 102. The detachable cover plate 102 is subjected to plastic deformation after being processed, so that when the detachable cover plate 102 subjected to plastic deformation is assembled back to the transmission mechanism 101, a required damping effect can be obtained.

Preferably, the positioning member 208 has some elasticity such that the positioning member 208 no longer acts as a rigid stop for the actuator 202. When the actuator 202 pushes the removable cover 102 into contact with the positioning member 208, the actuator 202 can be manipulated to continue to push the removable cover 102 to deform as the positioning member 208 is slightly elastically deformed based on its inherent amount of elasticity. This allows the amount of extension of the actuator 202, and thus the amount of deformation of the removable cover 102, to be fine-tuned in the event that the removable cover 102 contacts the positioning member 208.

Furthermore, the cross-sectional shape of actuator 202 is also preferably configured to not extend into throughbore 207. Although the operation of pressing and deforming the detachable cover plate 202 by the actuator 202 is mainly performed manually, it is necessary to avoid a situation where the pressing force of the actuator 202 is so large that the portion of the detachable cover plate 102 that is pressed against/pressed is pressed further into the through hole 207. Otherwise, forming further protrusions on the slightly plastically deformed detachable cover plate 102 is likely to affect the friction damping function of the detachable cover plate 102 to the transmission member 103

It should be understood that the foregoing drawings and detailed description are merely exemplary of the utility model and are not exhaustive of the possible embodiments of the utility model, and that various modifications can be made to the above described embodiments by those skilled in the art without departing from the spirit of the utility model.

Claims (10)

1. An adjusting device for adjusting the damping coefficient of a transmission mechanism, applied to the transmission mechanism of a telescopic component of a medical instrument, is characterized by comprising a base, a retaining mechanism and an actuating mechanism, wherein the retaining mechanism comprises a first component, a second component which is detachable relative to the first component and a cavity formed in the first component and the second component, the cavity is used for accommodating a detachable cover plate of the transmission mechanism, one of the first component and the second component is provided with a notch leading to the cavity, and the actuating mechanism can contact the detachable cover plate through the notch and press the detachable cover plate orthogonally to the detachable cover plate.

2. The adjustment device of claim 1, wherein the transmission mechanism further comprises a transmission member that covers at least a portion of the transmission member when the removable cover is assembled.

3. The adjustment device of claim 1, wherein one of the first and second members is fixedly mounted to the base and the other of the first and second members has no direct connection with the base.

4. An adjustment device according to claim 3, characterized in that the first part and the second part are detachably connected to each other by means of a threaded connection.

5. The adjustment device of claim 1, wherein the cavity includes a step facing the actuator for supporting a peripheral edge of the removable cover plate.

6. The adjustment device of claim 5, wherein one of the first and second members distal from the actuator comprises a recess surrounded by the step in a direction coincident with a direction of advancement of the actuator such that the removable cover within the cavity is deformable.

7. The adjustment device of claim 6, wherein one of the first and second members distal from the actuator further comprises a through hole and a positioning member, wherein the through hole is coaxial with the actuator and the positioning member is positionable at any depth of insertion into the through hole.

8. The adjustment device of claim 7, wherein the detent is resilient to allow the actuator to continue to urge the removable cover when the removable cover is urged into contact with the detent.

9. The adjustment device of claim 8, wherein the actuator is configured in cross-sectional shape such that it cannot extend into the through-hole.

10. The adjustment device of claim 1, wherein the actuator is a dial indicator.