CN116098651B

CN116098651B - Fixing device for instrument and instrument table using the same

Info

Publication number: CN116098651B
Application number: CN202310384678.3A
Authority: CN
Inventors: 陈文波; 单斌; 赵静
Original assignee: Beijing Zhiyu Medical Technology Co ltd
Current assignee: Beijing Zhiyu Medical Technology Co ltd
Priority date: 2023-04-12
Filing date: 2023-04-12
Publication date: 2023-06-09
Anticipated expiration: 2043-04-12
Also published as: CN116098651A

Abstract

The present application provides a fixing device for an instrument and an instrument workbench using the fixing device for the instrument, wherein the instrument is provided with an elongated instrument fixing part and comprises a fixing base, and the fixing base is provided with a containing cavity for containing at least one part of the instrument fixing part; the accommodation chamber is a through groove penetrating forward and backward along the axial direction thereof, and comprises a notch serving as a mounting opening of the instrument fixing part. The fixing device for the instrument is provided with a holding mechanism arranged on the fixing base, the holding mechanism comprises a first holding part and a second holding part which are oppositely arranged, and the first holding part and the second holding part are used for holding the instrument fixing part in the accommodating cavity. Accordingly, the apparatus can be better protected, and the fastening and the unfastening of the instrument fixing portion can be facilitated.

Description

Fixing device for instrument and instrument table using the same

Technical Field

The present invention relates to a fixture for an instrument and an instrument table using the fixture for an instrument, which can facilitate protection of equipment and reduce complexity of operation.

Background

In production and life, human-operated instruments generally have the problem of insufficient precision. Taking a cavity ultrasonic probe in a medical instrument as an example, the azimuth and displacement of the ultrasonic probe entering human tissues need to be precisely controlled so as to establish a three-dimensional model of an object to be detected. For this purpose, it is generally necessary to provide the apparatus with a fixing device, mount the fixing device to the table, and precisely control the movement of the fixing device by the pushing mechanism of the table.

In the conventional technology, when the cavity ultrasonic probe is mounted on the fixing device, the cavity ultrasonic probe is generally fixed in a surrounding mode, namely, on a transverse section perpendicular to the extending direction of the cavity ultrasonic probe, the fixing device forms a full-surrounding mode for the cavity ultrasonic probe.

In this case, in order to prevent the equipment such as the fixing device and the workbench from being contaminated by body fluid of a human body, a layer of sterile cloth is required to be covered on the equipment. Because the cavity ultrasonic probe is surrounded by the fixing device, holes are needed to be cut on the sterile cloth, the cavity ultrasonic probe extends out of the holes, the sterile cloth covers the equipment, and then the holes are tightly stuck by the adhesive tape, so that pollutants such as human body fluid can flow into the gaps between the holes and the cavity ultrasonic probe and between the sterile cloth and the equipment, the equipment is easy to pollute, and the whole process is complicated to operate.

For this reason, in the conventional art, there is a technical problem of how to facilitate both the protection apparatus and the reduction of the complexity of the operation.

Disclosure of Invention

The object of the present application is to provide a device for securing an instrument which facilitates the protection of the instrument and reduces the complexity of the operation. In order to achieve the above object, an aspect of the present invention is an instrument fixing device for fixing an instrument having an elongated instrument fixing portion, the instrument fixing device characterized in that: comprises a fixed base, wherein the fixed base is provided with an accommodating cavity for accommodating at least part of the instrument fixing part; the accommodating cavity is a through groove which is penetrated front and back along the axial direction of the accommodating cavity and comprises a notch serving as a mounting port of the instrument fixing part; the fixing device for the instrument is provided with a holding mechanism arranged on the fixing base, the holding mechanism comprises a first holding part and a second holding part which are oppositely arranged, and the first holding part and the second holding part are used for holding the instrument fixing part in the accommodating cavity;

The first holding part and the second holding part are respectively and rotatably connected to the fixed base through a first rotating shaft and a second rotating shaft which are parallel to the axial direction; the first rotating shaft and the second rotating shaft are positioned on the same plane perpendicular to the installation direction, namely the opposite direction of the direction in which the notch faces, namely a rotating shaft plane; the first holding part and the second holding part are connected through a third rotating shaft parallel to the axial direction, and the projection of the third rotating shaft on the rotating shaft plane falls between the first rotating shaft and the second rotating shaft; the first holding part and the second holding part are provided with a first connecting unit and a second connecting unit which extend from the connecting parts of the first holding part and the second holding part with the first rotating shaft and the second rotating shaft towards the third rotating shaft along the direction perpendicular to the first rotating shaft and the second rotating shaft respectively;

the first connecting unit and the second connecting unit are rotatably connected through the third rotating shaft; and the effective length of the first connecting unit, namely the distance between the third rotating shaft and the first rotating shaft has a specified compression allowance; in a release state of the holding mechanism, namely in a first state, the third rotating shaft is positioned on one side of the rotating shaft plane, which is close to the notch; in a second state which is a fastening state of the holding mechanism, the third rotating shaft is positioned on one side of the rotating shaft plane, which is far away from the notch;

Thus, when a force in the mounting direction is applied to the third rotating shaft, the effective length of the first connecting unit is compressed, and after the third rotating shaft passes over the rotating shaft plane, the effective length of the first connecting unit is restored, thereby changing the clasping mechanism from the first state to the second state; the first holding part and/or the second holding part is/are provided with a first holding arm and/or a second holding arm which extend from the connection parts of the first rotating shaft and the second rotating shaft respectively towards the notch; when the instrument fixing part is installed in the fixing base along the installation direction, the first holding arm and/or the second holding arm rotate around the first rotating shaft and the second rotating shaft respectively to the direction close to the instrument fixing part and hold the instrument fixing part.

According to the technical scheme, the device fixing part is partially surrounded, so that sterile cloth is conveniently covered, a better protection effect is achieved on equipment, and the operation difficulty is reduced. Meanwhile, the partially enclosed structure can be more conveniently released from the instrument fixing part under the conditions of sudden impact and the like. In addition, the holding mechanism can firmly hold the instrument fixing part, unnecessary movement is avoided, the installation and the taking out of the instrument fixing part are convenient for through the design of the three rotating shafts, and the structural stability and the convenience of loading and unloading are improved.

In a preferred embodiment, the effective length of the second connection unit, that is, the distance between the third rotation axis and the second rotation axis has a predetermined compression allowance, and when a force is applied to the third rotation axis in the mounting direction, that is, in the direction opposite to the direction in which the notch faces, the effective length of the second connection unit is compressed/restored in synchronization with the effective length of the first connection unit, thereby changing the holding mechanism from the first state to the second state.

According to the technical scheme, the first connecting unit and the second connecting unit are of elastic structures, so that the instrument fixing part can be conveniently installed and taken out.

In a preferred embodiment, the first and second connection units are each made of an elastic material, and each of the first and second connection units has a predetermined deformation allowance in the extending direction, the deformation allowance being compressed toward the first and second rotation axes, respectively; in the first state and the second state, the first connection unit and the second connection unit are in an unstressed state.

According to the technical scheme, the first connecting unit and the second connecting unit are elastic arms made of elastic materials, so that the technical effects of fastening and releasing are ensured, and meanwhile, the structure is simple, and the processing is convenient.

In a preferred mode, the first connecting unit includes a first fixing rod, a first elastic member, and a first telescopic part; the first fixing rod extends from the joint of the first holding part and the first rotating shaft towards the third rotating shaft along the extending direction of the first connecting unit; the first telescopic part is provided with a first telescopic rail matched with the first fixed rod, and one end of the first fixed rod, which is far away from the first rotating shaft, stretches into the first telescopic rail to enable the first telescopic part to move along the first fixed rod to be close to/far away from the first rotating shaft; one end of the first telescopic part, which is far away from the first rotating shaft, is rotatably connected with the third rotating shaft; the first elastic member is located between the first expansion portion and the first rotation shaft, is connected to the first expansion portion, and has a predetermined deformation allowance in an extending direction along the first fixing lever.

In a preferred mode, the second connecting unit includes a second fixing rod, a second elastic member, and a second telescopic part; the second fixing rod extends from the joint of the second holding part and the second rotating shaft towards the third rotating shaft along the extending direction of the second connecting unit; the second telescopic part is provided with a second telescopic rail matched with the second fixed rod, and one end of the second fixed rod, which is far away from the second rotating shaft, stretches into the second telescopic rail to enable the second telescopic part to move along the second fixed rod to be close to/far away from the second rotating shaft; one end of the second telescopic part, which is far away from the second rotating shaft, is rotatably connected with the third rotating shaft; the second elastic component is positioned between the second telescopic part and the second rotating shaft, is connected with the second telescopic part, and has a specified deformation allowance along the extending direction of the second fixing rod.

According to the technical scheme, the first connecting unit and the second connecting unit are elastic structures comprising springs and composed of a plurality of parts, and can be conveniently switched between the release state and the fastening state.

In a preferred mode, the first fixing rod and the second fixing rod are respectively provided with a first sliding rail and a second sliding rail which extend along the respective extending directions at positions close to the third rotating shaft; the third rotating shaft is connected to the first sliding track and the second sliding track, and can move along the extending directions of the first sliding track and the second sliding track respectively.

According to the technical scheme, the third rotating shaft moves along the extending directions of the first sliding rail and the second sliding rail respectively, so that the third rotating shaft can move between the upper side and the lower side of the rotating shaft plane.

In a preferred embodiment, in the first state, when a predetermined force is applied to the first and/or second holding arms away from the instrument fixing portion, the first and/or second connection units push the third rotation shaft in the reverse direction of the mounting direction, and the holding mechanism is changed from the first state to the second state.

According to the technical scheme, the instrument fixing part can be conveniently released.

In a preferred form, the receiving cavity has a cavity floor remote from the slot and cavity walls on either side between the slot and the cavity floor; in the direction perpendicular to the axial direction, a guide groove extending from the cavity wall on both sides of the cavity bottom to the notch and penetrating the cavity wall is provided, and the guide groove is used for accommodating the first holding part and/or the second holding part.

According to the technical scheme, the guide groove penetrating through the fixing base is convenient for accommodating the holding mechanism, and the position of the later-described instrument fixing clamp in the front-back direction can be limited.

In addition, another aspect of the present invention is an instrument table comprising the above-described instrument fixing device, an instrument including an instrument fixing portion, and an instrument fixing clip detachably connected to the instrument fixing portion for clamping the instrument fixing portion, the instrument fixing clip being a through groove penetrating in a front-rear direction along an extending direction thereof; in the fixed state of the instrument, the instrument fixing portion is fixed by the instrument fixing device via the instrument fixing clip.

According to the technical scheme, the instrument fixing clamp can be repeatedly used and is convenient to replace, so that the instrument fixing part is protected from abrasion, and convenience and economy are improved.

In a preferred form, the instrument holder has a base, and oppositely disposed first and second jaws extending from the base to the same side of the base; one of the inner wall of the first holding arm and the outer wall of the first clamping plate is provided with a first convex clamping hook, and the other is provided with a first clamping position matched with the first clamping hook; in the fixed state of the instrument, the first clamping hook and the first clamping position are mutually clamped; and/or one of the inner wall of the second holding arm and the outer wall of the second clamping plate is provided with a convex second clamping hook, and the other is provided with a second clamping position matched with the second clamping hook; and in the fixed state of the instrument, the second clamping hook and the second clamping position are mutually clamped.

According to the technical scheme, under the fixed state of the instrument, the clamping mechanism and the instrument fixing clamp are clamped with each other, so that a good fastening effect is achieved.

In a preferred form, the first clamping plate and/or the second clamping plate has an outer edge extending obliquely from its end remote from the clamping base in a direction away from the clamping base; in the fixed state of the instrument, the outer edge is folded towards the inner side of the instrument fixing clamp under the extrusion of the fixing base and is abutted against the instrument fixing part.

According to the technical scheme, after the instrument fixing clamp is installed in the fixing base, the outer edge is folded towards the inner side of the instrument fixing clamp and is abutted to the instrument fixing part under the extrusion of the fixing base, so that a better fastening effect is achieved on the instrument fixing part.

In a preferred embodiment, one of the inner wall of the first clamping plate and/or the second clamping plate and the outer wall of the instrument fixing portion abutting against the inner wall has a projection, and the other has a recess adapted to the projection; in the assembled state of the instrument fixing part and the instrument fixing clamp, the protrusion is connected with the groove in a matching way.

According to the technical scheme, the instrument fixing clamp can limit the displacement of the instrument fixing part in the extending direction of the instrument fixing part, so that a better fastening effect is achieved.

The fixing device for the instrument and the instrument workbench using the fixing device for the instrument can be convenient for protecting equipment, reduce operation complexity and realize better fastening and releasing effects.

Drawings

In order to more clearly illustrate the present application, the following description and illustrations of the specification drawings of the present application will be made. It will be apparent to those of ordinary skill in the art that the drawings in the following description merely illustrate certain aspects of some exemplary embodiments of the present application and that other drawings may be obtained from these drawings without the benefit of the inventive faculty.

Fig. 1 is a schematic view of an instrument fixation device and an instrument assembly.

Fig. 2 is a general schematic view of the fixation device for the instrument.

Fig. 3 is a schematic cross-sectional view of the fixation device for an instrument in a fastened state.

Fig. 4 is a schematic cross-sectional view of the second embodiment in a fastened state.

Fig. 5 (a) is a schematic structural view of the second holding portion.

Fig. 5 (b) is a schematic structural view of the first holding portion.

Fig. 6 is a schematic force-bearing view of the second holding portion in the first state.

Fig. 7 is a schematic diagram of the second holding portion in the second state.

Fig. 8 is a cross-sectional view of the instrument holder after the instrument holder is installed in the instrument holder.

Fig. 9 is a cross-sectional view of the instrument holder after it is received in the receiving chamber.

Description of the drawings:

100. fixing device for instrument

200. Instrument for treating and preventing diseases

201. Instrument fixing part

202. Working part of instrument

203. Cable with improved heat dissipation

300. Drape cloth

400. Working table

1. Fixed base

11. Base shell

2. Accommodating cavity

20. Notch groove

23. Cavity bottom

21. First cavity wall

22. Second cavity wall

3. Holding mechanism

30. Plane of rotation shaft

31. First holding part

310. First rotating shaft

311. First connecting unit

3111. First fixing rod

3112. First elastic component

3113. First telescopic part

3114. First sliding rail

3115. First telescopic rail

3116. First telescopic part rotating shaft hole

312. First holding arm

313. First clamping hook

314. A first protruding part

32. Second holding part

320. Second rotating shaft

321. Second connection unit

3211. Second fixing rod

3212. Second elastic component

3213. Second telescopic part

3214. Second sliding rail

3215. Second telescopic rail

3216. Second telescopic part rotating shaft hole

322. Second holding arm

323. Second clamping hook

324. Second protruding part

330. Third rotating shaft

4. Guide groove

5. Instrument fixing clamp

50. Clamping opening

51. First clamping plate

511. First clamping position

512. A first outer edge

513. A first elastic deformation zone

52. Second clamping plate

521. Second clamping position

522. Second outer edge

523. Second elastic deformation region

53. Clamping bottom

54. Splint bump

55. Fixing clamp boss

Detailed Description

Various exemplary embodiments of the present application are described in detail below with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative, and is in no way intended to limit the application, uses, or uses of the invention. This application may be embodied in many different forms and is not limited to the embodiments described herein. These embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that: the relative arrangement of parts and steps, numerical expressions and values, etc. set forth in these embodiments are to be construed as illustrative only and not as limiting unless otherwise stated.

As used in this application, the word "comprising" or "comprises" and the like means that elements preceding the word encompass the elements recited after the word, and that no other elements are excluded from the possible coverage.

All terms (including technical or scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs unless specifically defined otherwise. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

Parameters of, and interrelationships between, components, and control circuitry for, components, specific models of components, etc., which are not described in detail in this section, can be considered as techniques, methods, and apparatus known to one of ordinary skill in the relevant art, but are considered as part of the specification where appropriate.

The overall assembly of the instrument-use fixture 100 and the instrument 200 of the present application is described below with reference to fig. 1. Fig. 1 is an assembled schematic view of the instrument holder 100 and the instrument 200.

Referring to fig. 1, in this embodiment, an instrument 200 may be an ultrasonic probe of a medical instrument such as a rectum, including an instrument fixing portion 201 and an instrument working portion 202 for performing an instrument function such as insertion into human tissue to acquire information of an object to be examined. In the general case, the instrument fixing portion 201 is elongated to facilitate holding and fixing; both ends of the instrument fixing portion 201 are respectively connected to an instrument working portion 202 and a cable 203 for power supply and signal transmission.

During operation, it is often desirable to secure the instrument 200 to improve the accuracy of the procedure. Fig. 1 shows an instrument holder 100. In general, the instrument fixing portion 201 is first incorporated into the instrument fixing device 100, and then the instrument fixing device 100 is fixed to the table 400. The table 400 is provided with a pusher, such as a stepper motor, that precisely adjusts the pose of the instrument working portion 202 by controlling the orientation, speed, time of movement of the pusher. Taking an ultrasonic probe of a rectum as an example, the instrument working part 202 is a detection part of the probe, through the scheme, the instrument working part 202 can be controlled to advance at a constant speed in the rectum, image information of the rectum can be acquired once when the instrument working part advances by a specified step length, for example, 1 millimeter, can be preset, and finally an ultrasonic three-dimensional model of the rectum is built.

For convenience of explanation, the table 400 shown in fig. 1 is provided in the horizontal direction, and the extending direction of the instrument fixing portion 201 is the front-rear direction, wherein the direction from the instrument fixing portion 201 toward the instrument working portion 202 is the front, and vice versa. The transverse direction is the direction perpendicular to the front-rear direction. Unless otherwise indicated herein, the expressions referring to directions are the same.

It will be appreciated that during operation, the instrument fixing portion 201 needs to be fixed by the instrument fixing device 100 to prevent unnecessary changes and deviations in position and angle from occurring, which may affect the operation. In the conventional art, the fixing device 100 for an instrument is generally configured in a surrounding structure, for example, after the fixing device 100 for an instrument is installed in the fixing portion 201 for an instrument from the opening, a cover is fastened to the opening, so that the fixing portion 201 for an instrument is entirely wrapped in the lateral direction.

Meanwhile, in order to avoid contamination of the apparatus fixing device 100 and the table 400, a layer of drape 300 is generally covered, and in medical treatment, the drape 300 is generally a sterile drape. In the conventional art described above, since the fixing device 100 for an instrument laterally surrounds the instrument fixing portion 201, it is necessary to cut out a hole in the drape 300 and then extend the working portion 202 of the instrument from the hole, so that the drape 300 can be covered on the fixing device 100 for an instrument and the table 400 without affecting normal operation.

To better avoid contamination, the drape 300 is typically wrapped around the hole with tape after the instrument working portion 202 is extended out of the hole. However, this does not achieve a good shielding effect, and in particular, it often occurs that adhesion is not reliable or that the wrinkles are not well attached, and at this time, contaminants generated during the operation, such as surgical liquid, may still flow into the inside of the drape 300 through the slit, causing contamination of the apparatus.

In contrast, the instrument holder 100 of the present application adopts the semi-open structure shown in fig. 1, partially surrounding the instrument holder 201 in the lateral direction, rather than completely surrounding in an encircling manner. Thus, the drape 300 can be placed on the table 400 and the fixture 100 for the instrument first, and then the fixture 201 can be placed into the fixture 100 for the instrument through the drape 300, so that the drape 300 does not need to be perforated, a good protection effect can be achieved, and the operation flow is simplified. Meanwhile, the partially enclosed structure can be more conveniently released from the instrument fixing portion 201 even in the case of sudden impact or the like. However, this partially enclosed structure also has a problem of how to fix the instrument fixing portion 201, that is, it is necessary to fix the instrument fixing portion 201 by an additional fastening mechanism.

The instrument-fixing device 100 will be described in detail with reference to fig. 2 to 3. Fig. 2 is an overall schematic view of the fixing device 100 for an instrument, and fig. 3 is a cross-sectional schematic view of the fixing device 100 for an instrument in a fastened state.

First, the fixing base 1 will be specifically described.

Referring to fig. 2 and 3, the instrument fixing device 100 includes a fixing base 1, the fixing base 1 having a base housing 11, the base housing 11 constituting a housing chamber 2 for housing an instrument fixing portion 201. The housing chamber 2 has a through-groove structure penetrating forward and backward along the axial direction thereof, i.e., having both ends open, and has a notch 20 extending along the axial direction thereof as a mounting port of the instrument fixing portion 201. It will be understood that the axial direction of the housing chamber 2 is the front-rear direction, and the mounting direction of the instrument fixing portion 201 into the instrument fixing device 100 is the opposite direction to the direction in which the notch 20 faces.

In the present embodiment, the notch 20 of the housing chamber 2 is provided upward, that is, the instrument fixing portion 201 is fitted into the instrument fixing device 100 from the notch 20 from the top down, and at this time, the installation direction is the top down direction. It will be appreciated that the slot 20 may be provided in other orientations as long as it fits into the instrument holder 201, and this is described only as an example. The fixing base 1 has a substantially C-shape in the transverse cross section shown in fig. 3, and may have a substantially U-shape, a rectangular shape, a V-shape, or other shapes, as long as the fixing base can accommodate the instrument fixing portion 201, and is not particularly limited herein.

When the instrument fixing portion 201 is installed in the accommodating cavity 2 from top to bottom, the instrument fixing portion 201 is at least partially located in the accommodating cavity 2 in the extending direction, i.e. the front-rear direction, and the instrument working portion 202 extends out of the front end opening of the accommodating cavity 2 so as to facilitate related operations, and the cable 203 extends out of the rear end opening of the accommodating cavity 2 to be connected with other devices. The design of the through slot structure improves the convenience of the fixed installation and the operation of the instrument 200.

With continued reference to fig. 2 and 3, the stationary base 1 is preferably provided with a guide groove 4. Specifically, the accommodating chamber 2 has a chamber bottom 23 distant from the notch 20, and first and

second chamber walls

21, 22 located on both sides between the notch 20 and the chamber bottom 23. The guide groove 4 is provided so as to extend from the cavity bottom 23 in the lateral direction in the direction of the notch 20 along the first cavity wall 21 and the second cavity wall 22 on both sides, and penetrates the base housing 11. The guide groove 4 has a predetermined width in the front-rear direction, and accommodates a holding mechanism 3 described later.

Next, the holding mechanism 3 will be specifically described.

Referring to fig. 2 and 3, the instrument fixing device 100 is provided with a holding mechanism 3 for fastening an instrument fixing portion 201. The holding mechanism 3 includes a first holding portion 31 and a second holding portion 32 which are disposed opposite to each other, and the first holding portion 31 and the second holding portion 32 are used for holding the instrument fixing portion 201 in the accommodating cavity 2.

As an example, the first holding portion 31 and the second holding portion 32 are fixed to the guide groove 4 by a first rotation shaft 310 and a second rotation shaft 320, respectively, which are parallel to the axial direction of the housing chamber 2, and are rotatable in the guide groove 4 with respect to the fixing base 1 about the first rotation shaft 310 and the second rotation shaft 320, respectively. The first rotation shaft 310 and the second rotation shaft 320 are located on the same plane parallel to the horizontal direction, i.e., the rotation shaft plane 30 shown in fig. 3. In the present embodiment, the rotation axis plane 30 is perpendicular to the mounting direction, i.e., the up-down direction.

The first holding portion 31 and the second holding portion 32 are connected through a third rotating shaft 330 parallel to the axial direction, and a projection of the third rotating shaft 330 on the rotating shaft plane 30 falls between the first rotating shaft 310 and the second rotating shaft 320.

The first holding portion 31 has a first connection unit 311 extending from its connection with the first rotation shaft 310 toward the third rotation shaft 330 in a direction substantially perpendicular to the first rotation shaft 310. The second holding portion 32 has a second connection unit 321 extending from its connection with the second rotation shaft 320 toward the third rotation shaft 330 in a direction substantially perpendicular to the second rotation shaft 320.

The first connection unit 311 and the second connection unit 321 are rotatably connected via a third rotation shaft 330. And at least one of the first connection unit 311 and the second connection unit 321 is an elastic structure having a deformation allowance in its own extension direction, which is compressed. Illustratively, the first connection unit 311 is an elastic structure having an effective length, i.e., a distance of the third rotation shaft 330 with respect to the first rotation shaft 310, having a prescribed compression allowance. The second connection unit 321 may be a rigid structure, but preferably, the second connection unit 321 is also an elastic structure having a prescribed compression allowance of an effective length, i.e., a distance of the third rotation shaft 330 with respect to the second rotation shaft 320.

In the released state of the holding mechanism 3, i.e., in the first state, the third shaft 330 is located above one side of the shaft plane 30, which is close to the slot 20 (not shown in the drawing). In the second state, which is the fastened state of the holding mechanism 3, the third shaft 330 is located on the side of the shaft plane 30 away from the notch 20, i.e., below, as shown in fig. 3.

In other words, in the first state and the second state of the clasping mechanism 3, the sum of the distances between the third rotation shaft 330 and the first rotation shaft 310, the second rotation shaft 320 is larger than the distance between the first rotation shaft 310 and the second rotation shaft 320, that is, the third rotation shaft 330 and the first rotation shaft 310, the second rotation shaft 320 form a stable triangle structure in a transverse cross section perpendicular to the axial direction. Accordingly, in the first state and the second state, the first connection unit 311 and the second connection unit 321 are in a state of no compression deformation, i.e., no stress.

When the third rotating shaft 330 is located on the side of the rotating shaft plane 30 near the notch 20, i.e. above, the connection portion of the first connecting unit 311 and the second connecting unit 321 is also located at least partially above the bottom cavity 23 of the accommodating cavity 2, i.e. at least partially above the guiding slot 4.

Illustratively, when the instrument holder 201 is fitted from the slot 20, the instrument holder 201 first touches the connection portion of the first and

second connection units

311 and 321 and applies a force to the third rotation shaft 330 from the top down through the connection portion. At this time, the effective length of the first connection unit 311 is compressed such that the third rotation shaft 330 is downwardly away from the notch 20 and finally passes over the rotation shaft plane 30 to the lower side thereof, and the effective length of the first connection unit 311 is restored, thereby changing the clasping mechanism 3 from the first state to the second state.

If the second connecting unit 321 is also an elastic structure capable of being compressed along the extending direction, when a force is applied to the third rotating shaft 330 from top to bottom, the effective lengths of the first connecting unit 311 and the second connecting unit 321 are synchronously compressed/restored, and the third rotating shaft 330 moves from top to bottom along the central position between the first rotating shaft 310 and the second rotating shaft 320, so that the holding mechanism 3 is changed from the first state to the second state. If the second connecting unit 321 is of a rigid structure, when a force is applied to the third rotating shaft 330 from top to bottom, only the effective length of the first connecting unit 311 can be compressed, and at this time, the third rotating shaft 330 moves in an arc around the second rotating shaft 320 from top to bottom. For simplicity, only the first connection unit 311 and the second connection unit 321 are described herein as elastic structures.

Example 1

Next, a specific description of the first embodiment of the present application will be continued with reference to fig. 3.

Preferably, the first connection unit 311 and the second connection unit 321 are each an elastic arm made of an elastic material such as ABS resin, which has characteristics of low cost, high strength, good toughness, and easy processing and molding, so that the first connection unit 311 and the second connection unit 321 have a prescribed deformation allowance that can be compressed at least in the respective extension directions. Preferably, the entire clasping mechanism 3 is made of an elastic material such as ABS resin, so as to have a good structural strength and a large allowable amount of elastic deformation.

Further, the first holding portion 31 has a first holding arm 312 extending from its connection with the first rotation shaft 310 toward the notch 20 of the accommodating chamber 2. The second holding portion 32 has a second holding arm 322 extending from its connection with the second rotation shaft 320 toward the notch 20 of the accommodating chamber 2. Furthermore, as a preferred option, the first holding arm 312 has a first hook 313 extending inwardly from its inner wall toward the receiving chamber 2, and the second holding arm 322 has a second hook 323 extending inwardly from its inner wall toward the receiving chamber 2. Preferably, the first hook 313 and the second hook 323 are respectively disposed at the ends of the first holding arm 312 and the second holding arm 322 near the notch 20 as shown in the figures.

When the instrument fixing portion 201 is fitted from the notch 20, the instrument fixing portion 201 touches the connection portion of the first connection unit 311 and the second connection unit 321 and applies a force from top to bottom to the third rotation shaft 330, so that the effective lengths of the first connection unit 311 and the second connection unit 321 are synchronously compressed and the third rotation shaft 330 is pushed to move from above the rotation shaft plane 30 to below the rotation shaft plane 30, and the effective lengths of the first connection unit 311 and the second connection unit 321 are synchronously restored, that is, the clasping mechanism 3 is changed from the first state to the second state.

As the third shaft 330 moves from above the shaft plane 30 to below, the first holding arm 312, the second holding arm 322, the first hook 313 and the second hook 323 rotate inward of the holding mechanism 3 and are held by the instrument fixing portion 201. Preferably, the outer wall of the device fixing portion 201 is provided with a clamping groove adapted to the first clamping hook 313 and the second clamping hook 323 to be mutually clamped, so as to limit the displacement of the device fixing portion 201 in the transverse direction.

As another embodiment, when the clamping force applied to the instrument fixing portion 201 by the first and second holding

arms

312 and 322 in the lateral direction is large to some extent, the first and

second hooks

313 and 323 may be omitted, and the displacement of the instrument fixing portion 201 in the lateral direction may be limited only by the clamping force of the first and second holding

arms

312 and 322. Meanwhile, the displacement of the instrument fixing portion 201 in the front-rear direction is not easy to occur by means of the clamping force, namely, a certain fixing effect is achieved on the instrument fixing portion 201 in the front-rear direction and the transverse direction, and operation requirements can be met to a certain extent. Of course, the fastening manner of the instrument fixing portion 201 is not limited thereto.

In the present embodiment, the clasping mechanism 3 is made of an elastic material, and the relative wear between the clasping mechanism 3 and the instrument fixing portion 201 is relatively small compared to a rigid structure, which can extend the service life of the apparatus.

With continued reference to fig. 3, first and second clasping

arms

312, 322 preferably have first and

second protrusions

314, 324, respectively, that extend outward of clasping mechanism 3. When the instrument fixing portion 201 needs to be taken out of the accommodating chamber 2, the first protruding portion 314, the second protruding portion 324 are applied with a force toward the outside of the clasping mechanism 3, which is transmitted to the first connecting unit 311, the second connecting unit 321 and finally acts on the third rotating shaft 330 through the first clasping arm 312 and the second clasping arm 322, so that the first connecting unit 311, the second connecting unit 321 are pressed against each other to be elastically deformed, and the third rotating shaft 330 is pushed to move from below the rotating shaft plane 30 to above the rotating shaft plane 30, that is, the clasping mechanism 3 is changed from the second state to the first state. At this time, the instrument holder 201 can be easily removed from the housing chamber 2.

It will be appreciated that the first holding portion 31 may have the first holding arm 312 removed and only the first connecting arm 311 left. When the instrument fixing portion 201 is installed in the accommodating chamber 2, the third rotating shaft 330 moves downward, the second holding arm 322 rotates into the accommodating chamber 2, the instrument fixing portion 201 is pressed toward the first chamber wall 21 while being held, and the instrument fixing portion 201 is fixed together through the first chamber wall 21 and the second holding arm 322. Similarly, the second holding portion 32 may be omitted from the second holding arm 322, and only the second connecting arm 321 may be retained, so that the instrument fixing portion 201 is fixed together by the first holding arm 312 and the second cavity wall 22. It should be understood that at least one of the first holding arm 312 and the second holding arm 322 should be reserved for holding the instrument fixing portion 201, which is not repeated herein.

Example two

Next, a second embodiment will be described with reference to fig. 4 to 7. Fig. 4 is a schematic cross-sectional view of the second embodiment in the fastened state, fig. 5 (a) is a schematic structural view of the second holding portion 32, fig. 5 (b) is a schematic structural view of the first holding portion 31, fig. 6 is a schematic stress view of the second holding portion 32 in the first state, and fig. 7 is a schematic stress view of the second holding portion 32 in the second state.

As a preferred embodiment, referring to fig. 4, 5 (a) and 5 (b), the second connecting unit 321 includes a second fixing rod 3211, a second elastic member 3212 and a second telescopic portion 3213. The second fixing rod 3211 extends from a connection portion of the second clasping portion 32 and the second rotating shaft 320 toward the third rotating shaft 330 along an extending direction of the second connecting unit 321. The second telescoping portion 3213 has a second telescoping rail 3215 that mates with the second fixed rod 3211, the second telescoping rail 3215 being a generally elongated slot or aperture. One end of the second fixing rod 3211, which is far from the second rotating shaft 320, extends into the second telescopic rail 3215, so that the second telescopic portion 3213 moves along the second fixing rod 3211 toward/away from the second rotating shaft 320.

As an example, the second telescopic portion 3213 has a second telescopic portion pivot hole 3216 extending in the axial direction at an end thereof remote from the second pivot 320, and in the assembled state, the third pivot 330 is disposed in the axial direction with one end thereof positioned in the second telescopic portion pivot hole 3216, so that the second telescopic portion 3213 and the third pivot 330 are rotatably connected.

The second elastic member 3212 may be a spring that is positioned between the second telescopic portion 3213 and the second rotating shaft 320, is connected to the second telescopic portion 3213, and has a predetermined allowable deformation amount in the extending direction along the second fixing rod 3211. For example, one end of the second elastic member 3212 may be connected to an end of the second telescopic portion 3213 near the second rotating shaft 320, or may extend into the second telescopic portion 3213, and the other end is connected to a connection portion between the second holding portion 32 and the second rotating shaft 320, which is not limited herein.

Preferably, the first connection unit 311 also includes a first fixed rod 3111, a first elastic member 3112, and a first telescopic portion 3113. The first fixing lever 3111 extends from a connection of the first grip 31 and the first shaft 310 toward the third shaft 330 along an extending direction of the first connection unit 311. The first telescoping portion 3113 has a first telescoping rail 3115 adapted to the first fixed bar 3111, the first telescoping rail 3115 being generally elongate slot or aperture. One end of the first fixing rod 3111, which is far from the first rotation shaft 310, is extended into the first telescopic rail 3115, so that the first telescopic portion 3113 moves along the first fixing rod 3111 toward/away from the first rotation shaft 310.

As an example, the first telescopic portion 3113 has a first telescopic portion shaft hole 3116 extending in an axial direction at an end remote from the first shaft 310, and in an assembled state, the third shaft 330 is disposed in the axial direction and an end remote from the second telescopic portion 3213 is located at the first telescopic portion shaft hole 3116, so that the first telescopic portion 3113 and the third shaft 330 are rotatably connected.

The first elastic member 3112 may be a spring that is located between the first telescoping portion 3113 and the first shaft 310, is connected to the first telescoping portion 3113, and has a predetermined deformation allowance in an extending direction along the first fixing rod 3111. For example, one end of the first elastic member 3112 may be connected to an end of the first flexible portion 3113 near the first rotation shaft 310, may extend into the first flexible portion 3113, and the other end may be connected to a connection portion between the first holding portion 31 and the first rotation shaft 310, which is not limited herein.

Meanwhile, with continued reference to fig. 4, 5 (a) and 5 (b), it is preferable that the first and second

fixed bars

3111 and 3211 are provided with first and second sliding

rails

3114 and 3214 extending in respective extending directions, respectively, at positions near the third rotation shaft 330. The third rotating shaft 330 is connected to the first sliding rail 3114 and the second sliding rail 3214, and is capable of moving along the extending directions of the first sliding rail 3114 and the second sliding rail 3214, respectively.

Taking the second sliding rail 3214 as an example, it is an illustrated notch-shaped groove that extends in the extending direction of the second fixing rod 3211 and penetrates forward and backward in the axial direction. The second slide rail 3214 may be a vertically long through hole extending in the extending direction of the second fixing rod 3211 and penetrating forward and backward in the axial direction. Preferably, the pattern of the first sliding rail 3114 on the first fixed bar 3111 is identical to the pattern of the second sliding rail 3214 on the second fixed bar 3211, which is not repeated here. As an example, in the assembled state, the third rotating shaft 330 is provided so as to pass through the first telescopic portion 3113, the first slide rail 3114, the second slide rail 3214, and the second telescopic portion 3213 at the same time as illustrated.

As another example, the first slide rail 3114 and the second slide rail 3214 do not penetrate in the axial direction. The first slide rail 3114 is a half-groove-shaped groove provided toward the second telescopic portion 3213 and extending in the extending direction of the first fixed rod 3111, and the second slide rail 3214 is a half-groove-shaped groove provided toward the first telescopic portion 3113 and extending in the extending direction of the second fixed rod 3211. Both ends of the third rotation shaft 330 are inserted into the first and second sliding

rails

3114 and 3214, respectively, and are not provided so as to penetrate the first and second

telescopic portions

3113 and 3213 as shown.

The edges of the first sliding rail 3114 and the second sliding rail 3214 near to/far from the third rotation shaft 330 may be rounded, straight, or beveled as shown. The matching area with the third rotating shaft 330 is relatively large when the arc edge is processed, so that excessive collision or abrasion generated by long-time repeated work can be avoided.

In the present embodiment, when the holding mechanism 3 is switched between the first state and the second state, the first telescopic portion 3113 and the second telescopic portion 3213 respectively press the first elastic member 3112 and the second elastic member 3212 along the first fixing rod 3111 and the second fixing rod 3211, and respectively move in directions approaching the first rotating shaft 310 and the second rotating shaft 320, so that the third rotating shaft 330 moves between the upper side and the lower side of the rotating shaft plane 30. Taking the example that the third rotating shaft 330 moves from top to bottom, after the third rotating shaft 330 passes over the rotating shaft plane 30 from top to bottom, due to the elastic force of the first elastic member 3112 and the second elastic member 3212, the first telescopic portion 3113 and the second telescopic portion 3213 continue to descend until the third rotating shaft 330 contacts with the edges of the first sliding track 3114 and the second sliding track 3214, which are far away from the first rotating shaft 310 and the second rotating shaft 320, respectively, the third rotating shaft 330 stops sliding downwards, thereby achieving stable holding of the apparatus fixing portion 201. The principle of the third rotation shaft 330 moving from bottom to top is the same as that, and will not be described again.

In the process of moving up and down, the third shaft 330 can also slide in a small range relative to the first fixed rod 3111 and the second fixed rod 3211 along the extending direction of the first sliding rail 3114 and the second sliding rail 3214, so that the third shaft 330 can move up and down.

However, as another preferable mode, one end of the first and

second fixing bars

3111 and 3211 near the third rotation shaft 330 may be not connected to the third rotation shaft 330, but may be spaced apart from the third rotation shaft 330, and the third rotation shaft 330 may be connected to only the first and second

telescopic portions

3113 and 3213. At this time, the first elastic member 3112 and the second elastic member 3212 are respectively pressed by the first telescopic portion 3113 and the second telescopic portion 3213, so that the third shaft 330 can be moved up and down on the shaft plane 30.

Next, the stress of the second holding portion 32 will be described by taking the example.

Referring to fig. 6, in the first state of the holding mechanism 3, the third rotating shaft 330 is located above the rotating shaft plane 30, the second elastic member 3212 is in a pre-tensioned state, and the second telescopic portion 3213 receives a thrust force F1 of the second elastic member 3212 in a direction away from the second rotating shaft 320 along the extending direction of the second fixing rod 3211, but the second telescopic portion 3213 does not come out of an end portion of the second fixing rod 3211 away from the second rotating shaft 320 due to the third rotating shaft 330.

Meanwhile, the pushing force F2 in the horizontal direction applied to the second telescopic portion 3213 by the first telescopic portion 3113 through the third rotating shaft 330, F2 is a component force in the horizontal direction of the elastic force applied to the first telescopic portion 3113 by the first elastic member 3112. At this time, in the transverse cross section, an angle θ between a line connecting the center of the third rotation shaft 330 and the center of the second rotation shaft 320 and the rotation shaft plane 30 is determined by a position and a dimension of the second sliding rail 3214 along the extending direction of the second fixing rod 3211.

In the first state of the holding mechanism 3, when the instrument fixing portion 201 is installed and an external force F is applied to the third rotating shaft 330 in the installation direction, that is, from top to bottom, the force F and F2 combine to generate a resultant force opposite to the direction of the elastic force F1, if the resultant force is greater than the elastic force F1, the second elastic member 3212 is compressed, the third rotating shaft 330 moves downward, the angle θ becomes smaller, if the external force F is removed from the third rotating shaft 330 without reaching the rotating shaft plane 30, the elastic force of the second elastic member 3212 pushes the second telescopic portion 3213 back to the initial position of the solid line in the figure, and the angle θ reaches the maximum. Once the third shaft 330 is lower than the shaft plane 30 by the external force, the second elastic member 3212 makes the third shaft 330 move downward to reach the dotted line position in the figure, and the angle θ is maximized. At this time, the second holding portion 32 drives the second hook 323 to rotate toward the inner side with a small angle, so as to fix the instrument fixing portion 201.

Referring to fig. 7, when the release tool fixing portion 201, i.e., the holding mechanism 3, is required to be changed from the second state to the first state, the operator manually pulls the second protruding portion 324 of the second holding arm 322 to the outside of the holding mechanism 3, and the external force F at this time is converted into an upward component force F' applied to the third rotating shaft 330 by the second holding arm 322 and the second connecting unit 321. The second elastic member 3212 applies elastic force F1' to the second telescopic portion 3213 in a direction away from the second rotation axis 320 along the extending direction of the second fixing rod 3211, and the first telescopic portion 3113 applies a horizontal pushing force F2', F2' to the second telescopic portion 3213 through the third rotation axis 330, which is a component force in the horizontal direction of the elastic force applied to the first telescopic portion 3113 by the first elastic member 3112.

When the resultant force value of F ' and F2' is greater than the elastic force F1' of the second elastic member 3212, the second elastic member 3212 is compressed, the second telescopic portion 3213 moves upward, the second holding arm 322 opens to the outside of the holding mechanism 3, and the movement track of the second hook 323 is an arc inclined upward around the second rotation axis 320, so that the second hook 323 is convenient to separate from the clamping position and open, and finally, the apparatus fixing portion 201 is released.

The force-bearing principle of the first holding portion 31 and the second holding portion 32 is the same, and will not be described here again.

In addition, the elastic forces of the first elastic member 3112 and the second elastic member 3212 are balanced, so that the third rotating shaft 330 is located between the first rotating shaft 310 and the second rotating shaft 320 in the rotating shaft plane 30, and the first connecting unit 311 and the second connecting unit 321 are located on the same horizontal plane. However, this is also an unstable state, and the spring back to the first state or the second state is easily caused by a slight external force. The change of the holding means 3 between the first state and the second state of the present application is also realized on the basis of this principle.

The first and second embodiments are preferred embodiments. In practice, one of the first connection unit 311 and the second connection unit 321 may be a complete elastic arm made of an elastic material in the first embodiment, the other may be a form of an elastic assembly including a spring in the second embodiment, or one of the first connection unit 311 and the second connection unit 321 may be an elastic structure and the other may be a rigid structure, which is not particularly limited herein.

Next, the instrument holder 5 will be specifically described with reference to fig. 2, 8, and 9. Fig. 8 is a cross-sectional view of the instrument holder 5 after the instrument holder 201 is fitted therein, and fig. 9 is a cross-sectional view of the instrument holder 5 after it is fitted into the housing chamber 2.

Referring to fig. 2 and 8, as a preferable embodiment, an instrument holder 5 for holding an instrument fixing portion 201 and detachably connecting to the instrument fixing portion 201 is provided. The instrument holder 5 has a through groove structure penetrating in the front-rear direction, i.e., having both ends open, and may have different shapes such as a C-shape and a U-shape in cross section, and is specifically defined by the shape of the instrument holder 201, and only the U-shape structure having an upward opening as shown in the drawing is described as an example.

In the present embodiment, the instrument holder 5 has a jaw 50 which is an opening for fitting the instrument holder 201, a bottom 53 which is apart from the jaw 50, and first and

second clamping plates

51, 52 which are located between the jaw 50 and the bottom 53 and are disposed opposite to each other. Thus, the instrument fixing portion 201 can be first inserted into the instrument fixing clip 5, and then inserted into the accommodating chamber 2 together with the instrument fixing clip 5. That is, in the fixed state of the instrument fixing portion 201, the instrument fixing portion 201 is held by the fixing base 1 via the instrument fixing clip 5, and at this time, the instrument fixing clip 5 forms a pattern partially surrounding the instrument fixing portion 201 in the lateral direction.

By providing the instrument holder 5, more instrument holders 201 of different shapes can be applied, and unnecessary damage to the instrument holders 201 by the instrument holder 100 can be avoided. Accordingly, as shown in fig. 8, the drape 300 may be first placed into the instrument holder 5, and then the instrument fixing portion 201 may be placed into the instrument holder 5, that is, the instrument fixing portion 201 may be held by the instrument holder 5 through the drape 300.

The instrument fixing clamp 5 can be used repeatedly as a consumable, the cost performance is improved, alcohol can be used alone or low-temperature plasma or ethylene oxide can be used for sterilizing if necessary, and a new instrument fixing clamp 5 can be conveniently replaced after a period of use, so that the fixation of the instrument fixing part 201 is not affected due to material deterioration or cracking caused by repeated sterilization. In addition, the apparatus fixing clip 5 and the drape 300 may be integrally formed and disposed of after use, so that the apparatus can be more conveniently and effectively protected, but the cost is increased accordingly.

Referring to fig. 8 and 9, preferably, the outer walls of the first clamping plate 51 and the second clamping plate 52 have a first clamping position 511 and a second clamping position 521, respectively. In the fixed state of the instrument fixing portion 201, the first hook 313 and the second hook 323 of the holding mechanism 3 are engaged with the first engaging position 511 and the second engaging position 521, respectively, so that displacement of the instrument fixing clip 5 in the lateral direction is restricted. It should be understood that hooks may be provided on the outer walls of the first clamping plate 51 and the second clamping plate 52, and locking positions may be provided on the first holding portion 31 and the second holding portion 32, respectively, so long as they can be locked to each other, and the present invention is not limited thereto.

As a preferred embodiment, a clip boss 55 that fits in the guide groove 4 of the fixing base 1 is provided on the outer wall of the instrument holder 5, and the clip boss 55 is configured to extend laterally from the clip base 53 in the direction of the clip opening 50 along the first and

second clip plates

51, 52 on both sides, and has a width in the axial direction, i.e., the front-rear direction, smaller than the width of the guide groove 4 in this direction. Accordingly, on the one hand, the fixing clip boss 55 forms a first locking position 511 and a second locking position 521 with a step structure with the outer walls of the first clamping plate 51 and the second clamping plate 52, respectively, for locking with the first hook 313 and the second hook 323, respectively. On the other hand, when the instrument holder 5 is mounted in the housing cavity 2, the holder boss 55 is engaged in the guide groove 4 and abuts against the connection portions of the first connection unit 311 and the second connection unit 321. This not only facilitates the installation of the instrument fixing clip 5, but also allows the guide groove 4 to restrict the displacement of the instrument fixing clip 5 in the front-rear direction by the clip boss 55.

It is to be understood that the first clamping position 511 and the second clamping position 521 are not limited to the above-mentioned step structure, for example, may be in a groove shape, and thus, after being respectively clamped with the first clamping hook 313 and the second clamping hook 323, the displacement of the instrument fixing clip 5 in the lateral direction can be limited, and the displacement of the instrument fixing clip in the front-rear direction can be limited.

The instrument fixing clip 5 can be made of ductile plastic such as polypropylene (PP), and has a thin-wall through groove structure, and has a certain deformation allowance in the transverse direction. The width of the nip 50 in the horizontal direction can be set to be equal to or slightly smaller than the maximum width of the instrument fixing portion 201 in the horizontal direction, so that the first and

second clamping plates

51, 52 generate a tighter clamping force to the instrument fixing portion 201. Preferably, a certain depth is provided between the clamping opening 50 and the clamping bottom 53, when the instrument fixing portion 201 is installed in the instrument fixing clip 5, the clamping opening 50 is ensured to be located above the maximum width position of the instrument fixing portion 201 in the horizontal direction, for example, for an instrument fixing portion 201 with a circular cross section, the clamping opening 50 is ensured to be higher than the center of the instrument fixing portion 201 in the up-down direction, and for an instrument fixing portion 201 with a square cross section, the clamping opening 50 is ensured to wrap the uppermost edge angle or the rounded corner of the instrument fixing portion 201.

Further, as a preferable aspect, the first clamping plate 51 and the second clamping plate 52 have a first outer edge 512 and a second outer edge 522 extending obliquely from one ends thereof away from the clamping bottom 53 in a direction away from the clamping bottom 53, respectively. The root portions of the first and second

outer edges

512, 522 near the grip bottom 53 have a first and second elastically deforming

regions

513, 523, respectively, each having a substantially S-shape.

As shown in fig. 8, when the instrument holder 201 is fitted into the instrument holder 5 and the instrument holder 5 is not yet fitted into the accommodation chamber 2, a certain gap is maintained in the lateral direction between the first outer edge 512, the second outer edge 522 and the outer wall of the instrument holder 201. As shown in fig. 9, after the instrument holder 5 is installed in the accommodating cavity 2, the first outer edge 512 and the second outer edge 522 are folded toward the inner side of the instrument holder 5 and abut against the outer wall of the instrument fixing portion 201 under the extrusion of the fixing base 1, and the S-shaped first elastic deformation region 513 and the second elastic deformation region 523 form a certain elastic clamping on the instrument fixing portion 201 and apply a downward pressure on the instrument fixing portion 201, so as to clamp and limit the lateral displacement of the instrument fixing portion 201. The presence of the first elastic deformation region 513 and the second elastic deformation region 523 can avoid direct stress damage to the instrument fixing portion 201.

Next, the limiting of the instrument fixing portion 201 in the front-rear direction will be specifically described.

With continued reference to fig. 2, as previously described, when the instrument holder 5 is fitted into the receiving chamber 2, the guide groove 4 restricts displacement of the instrument holder 5 in the front-rear direction by the holder boss 55. Further, as a preferable aspect, one of the inner wall of the first clamping plate 51 and/or the second clamping plate 52 and the outer wall of the instrument fixing portion 201 has a projection, and the other has a groove adapted to the projection. For example, the inner wall of the second clamping plate 52 is provided with 2 clamping plate protrusions 54 shown in fig. 2, and the outer wall of the instrument fixing portion 201 abutting against the second clamping plate 52 is provided with fixing portion grooves (not shown) that are fitted with the two clamping plate protrusions 54, and when the instrument fixing portion 201 is fitted into the instrument fixing clip 5, the clamping plate protrusions 54 are fitted with the fixing portion grooves, thereby restricting displacement of the instrument fixing portion 201 in the front-rear direction by the instrument fixing clip 5.

In summary, the present application provides the semi-open type fixing device 100 for the instrument, and forms a partially enclosed fixing pattern having an opening to the instrument fixing portion 201 in the lateral direction, so that the drape 300 can cover the apparatus more conveniently, and the apparatus is prevented from being contaminated. At the same time, by providing the clasping mechanism 3 capable of changing between the released state and the fastened state, the fixation and removal of the instrument fixing portion 201 is conveniently achieved. In addition, the reusable and convenient-to-replace instrument fixing clamp 5 is arranged, so that abrasion of the instrument fixing part 201 is avoided, and convenience and economy are improved.

It should be understood that the above specific embodiments are only for explaining the present application, the protection scope of the present application is not limited thereto, and any person skilled in the art should be able to modify, replace and combine the technical solution and concepts according to the present application within the scope of the present application.

Claims

1. A device for securing an instrument, the instrument having an elongated instrument securing portion, the device characterized by:

comprises a fixed base, wherein the fixed base is provided with an accommodating cavity for accommodating at least part of the instrument fixing part; the accommodating cavity is a through groove which is penetrated front and back along the axial direction of the accommodating cavity and comprises a notch serving as a mounting port of the instrument fixing part;

The fixing device for the instrument is provided with a holding mechanism arranged on the fixing base, the holding mechanism comprises a first holding part and a second holding part which are oppositely arranged, and the first holding part and the second holding part are used for holding the instrument fixing part in the accommodating cavity;

the first holding part and the second holding part are respectively and rotatably connected to the fixed base through a first rotating shaft and a second rotating shaft which are parallel to the axial direction; the first rotating shaft and the second rotating shaft are positioned on the same plane perpendicular to the installation direction, namely the opposite direction of the direction in which the notch faces, namely a rotating shaft plane;

the first holding part and the second holding part are connected through a third rotating shaft parallel to the axial direction, and the projection of the third rotating shaft on the rotating shaft plane falls between the first rotating shaft and the second rotating shaft;

the first holding part and the second holding part are provided with a first connecting unit and a second connecting unit which extend from the connecting parts of the first holding part and the second holding part with the first rotating shaft and the second rotating shaft towards the third rotating shaft along the direction perpendicular to the first rotating shaft and the second rotating shaft respectively;

the first connecting unit and the second connecting unit are rotatably connected through the third rotating shaft; and the effective length of the first connecting unit, namely the distance between the third rotating shaft and the first rotating shaft has a specified compression allowance;

In a release state of the holding mechanism, namely in a first state, the third rotating shaft is positioned on one side of the rotating shaft plane, which is close to the notch; in a second state which is a fastening state of the holding mechanism, the third rotating shaft is positioned on one side of the rotating shaft plane, which is far away from the notch;

thus, when a force in the mounting direction is applied to the third rotating shaft, the effective length of the first connecting unit is compressed, and after the third rotating shaft passes over the rotating shaft plane, the effective length of the first connecting unit is restored, thereby changing the clasping mechanism from the first state to the second state;

the first holding part and/or the second holding part is/are provided with a first holding arm and/or a second holding arm which extend from the connection parts of the first rotating shaft and the second rotating shaft respectively towards the notch;

when the instrument fixing part is installed in the fixing base along the installation direction, the first holding arm and/or the second holding arm rotate around the first rotating shaft and the second rotating shaft respectively to the direction close to the instrument fixing part and hold the instrument fixing part.

2. The device according to claim 1, wherein:

The effective length of the second connection unit, i.e. the distance of the third rotation axis relative to the second rotation axis has a prescribed compression allowance,

when a force in the mounting direction, that is, in the direction opposite to the direction in which the notch is directed is applied to the third rotating shaft, the effective length of the second connecting unit is compressed/restored in synchronization with the effective length of the first connecting unit, thereby changing the clasping mechanism from the first state to the second state.

3. The device according to claim 2, wherein:

the first connecting unit and the second connecting unit are respectively made of elastic materials and have prescribed deformation allowance which is respectively compressed towards the first rotating shaft and the second rotating shaft in the respective extending directions;

in the first state and the second state, the first connection unit and the second connection unit are in an unstressed state.

4. The device according to claim 1, wherein:

the first connecting unit comprises a first fixed rod, a first elastic component and a first telescopic part;

the first fixing rod extends from the joint of the first holding part and the first rotating shaft towards the third rotating shaft along the extending direction of the first connecting unit;

The first telescopic part is provided with a first telescopic rail matched with the first fixed rod, and one end of the first fixed rod, which is far away from the first rotating shaft, stretches into the first telescopic rail to enable the first telescopic part to move along the first fixed rod to be close to/far away from the first rotating shaft;

one end of the first telescopic part, which is far away from the first rotating shaft, is rotatably connected with the third rotating shaft;

the first elastic member is located between the first expansion portion and the first rotation shaft, is connected to the first expansion portion, and has a predetermined deformation allowance in an extending direction along the first fixing lever.

5. The device-securing apparatus as claimed in claim 4, wherein:

the second connecting unit comprises a second fixing rod, a second elastic component and a second telescopic part;

the second fixing rod extends from the joint of the second holding part and the second rotating shaft towards the third rotating shaft along the extending direction of the second connecting unit;

the second telescopic part is provided with a second telescopic rail matched with the second fixed rod, and one end of the second fixed rod, which is far away from the second rotating shaft, stretches into the second telescopic rail to enable the second telescopic part to move along the second fixed rod to be close to/far away from the second rotating shaft;

One end of the second telescopic part, which is far away from the second rotating shaft, is rotatably connected with the third rotating shaft;

the second elastic component is positioned between the second telescopic part and the second rotating shaft, is connected with the second telescopic part, and has a specified deformation allowance along the extending direction of the second fixing rod.

6. The device-securing apparatus as claimed in claim 5, wherein:

the first fixing rod and the second fixing rod are respectively provided with a first sliding rail and a second sliding rail which extend along respective extending directions at positions close to the third rotating shaft;

the third rotating shaft is connected to the first sliding track and the second sliding track, and can move along the extending directions of the first sliding track and the second sliding track respectively.

7. The device according to claim 1, wherein:

in the first state, when a predetermined force is applied to the first holding arm and/or the second holding arm away from the instrument fixing portion, the first connecting unit and/or the second connecting unit pushes the third rotation shaft in the reverse direction of the mounting direction, and the holding mechanism is changed from the first state to the second state.

8. The device according to claim 1, wherein:

the accommodating cavity is provided with a cavity bottom far away from the notch and cavity walls positioned at two sides between the notch and the cavity bottom;

in the direction perpendicular to the axial direction, a guide groove extending from the cavity wall on both sides of the cavity bottom to the notch and penetrating the cavity wall is provided, and the guide groove is used for accommodating the first holding part and/or the second holding part.

9. An instrument workbench, characterized in that:

an instrument fixing clip detachably connected to the instrument fixing portion, the instrument fixing clip having a through groove extending longitudinally therethrough, the through groove being provided with the instrument fixing device according to any one of claims 1 to 8;

in the fixed state of the instrument, the instrument fixing portion is fixed by the instrument fixing device via the instrument fixing clip.

10. The instrument table of claim 9, wherein:

the instrument fixing clamp is provided with a clamp bottom, and a first clamping plate and a second clamping plate which extend from the clamp bottom to the same side of the clamp bottom and are oppositely arranged;

One of the inner wall of the first holding arm and the outer wall of the first clamping plate is provided with a first convex clamping hook, and the other is provided with a first clamping position matched with the first clamping hook; in the fixed state of the instrument, the first clamping hook and the first clamping position are mutually clamped;

and/or the number of the groups of groups,

one of the inner wall of the second holding arm and the outer wall of the second clamping plate is provided with a convex second clamping hook, and the other is provided with a second clamping position matched with the second clamping hook; and in the fixed state of the instrument, the second clamping hook and the second clamping position are mutually clamped.

11. The instrument table of claim 10, wherein:

the first clamping plate and/or the second clamping plate are/is provided with an outer edge which extends obliquely from one end of the clamping plate away from the clamping bottom and towards the direction away from the clamping bottom;

in the fixed state of the instrument, the outer edge is folded towards the inner side of the instrument fixing clamp under the extrusion of the fixing base and is abutted against the instrument fixing part.

12. The instrument table of claim 10, wherein:

one of the inner wall of the first clamping plate and/or the second clamping plate and the outer wall of the instrument fixing part which is abutted against the inner wall is provided with a bulge, and the other is provided with a groove matched with the bulge;

In the assembled state of the instrument fixing part and the instrument fixing clamp, the protrusion is connected with the groove in a matching way.