CN112618034A

CN112618034A - Fixing seat for medical instrument

Info

Publication number: CN112618034A
Application number: CN202011637806.3A
Authority: CN
Inventors: 周毅; 马晓忠; 高倩
Original assignee: Jixian Artificial Intelligence Co Ltd
Current assignee: Jixian Artificial Intelligence Co Ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2021-04-09
Anticipated expiration: 2040-12-31
Also published as: CN112618034B

Abstract

The invention discloses a fixing seat for a medical instrument, wherein the medical instrument is provided with a positioning part, the fixing seat is provided with a clamping unit, the clamping unit comprises at least two clamping pieces, and the clamping pieces can be mutually matched to form a clamping cavity matched with the positioning part; at least one clamping piece is movable, so that the fixing seat is provided with a clamping state for forming the clamping cavity to clamp the positioning part and a releasing state for releasing the clamping of the positioning part. This scheme can convenience of customers change location portion to make the fixing base can fix more types of medical instrument, and then promote the application range of fixing base, make it can adapt to more application scenes. And the relative motion of the positioning part in the clamping cavity can be avoided to a certain extent, so that the limiting effect of the positioning part in the fixing seat is improved, the fixing of medical equipment is facilitated, and the stability and the accuracy of the operation process are greatly improved.

Description

Fixing seat for medical instrument

Technical Field

The invention belongs to the technical field of medical instruments, and particularly relates to a fixing seat for a medical instrument.

Background

In the course of modern medical operations, a number of advanced medical instruments and related equipment have been added. Such as endoscopes, irrigation tubes, and draw hooks, which are commonly used in minimally invasive surgery, and in order to ensure the stability and accuracy of the surgery, the pose of the medical equipment is often required to be fixed and the medical equipment is required to be adjusted within a certain range.

At present, adopt artificial mode to fix above-mentioned medical equipment usually, this just needs medical personnel to hold one or more equipment with hand, if the time of operation is longer, can greatly increase medical personnel's work load and operation intensity undoubtedly, is unfavorable for the promotion of operation efficiency. In addition, if the medical staff keeps a fixed posture for a long time, the shaking of hands cannot be avoided at all, which may possibly affect the stability and accuracy of the operation. In the prior art, a universal medical instrument support with screwing and locking functions also exists, and comprises a first sleeve and a second sleeve, wherein the first sleeve is fixed with a first sleeve; a second sleeve is fixed on the second sleeve; a cylindrical head screw penetrates through the first sleeve and the second sleeve and is connected with a screwing handle; a second threaded hole is formed in the cylindrical head screw and connected with a positioning screw; a second shaft lever penetrates through the second sleeve, a first wedge-shaped surface is arranged on the second shaft lever, a second wedge-shaped surface is arranged on the cylindrical head screw, and the second wedge-shaped surface is attached to the first wedge-shaped surface; a second ball joint is arranged on the second sleeve, and the second shaft rod is abutted against the ball head of the second ball joint; an instrument chuck is fixed on the ball head.

The support that above-mentioned scheme provided realizes fixing and adjustment to each spare part in the support through rotatory twisting handle to because the instrument chuck is connected with the bulb is universal, consequently can make the medical instrument of centre gripping on the instrument chuck realize the rotation of arbitrary direction. The bracket with the structure can avoid shaking caused by manually holding each instrument to a certain extent, and improves the stability and the accuracy of the operation. However, in the above-described aspect, the fixing structure of the ball head is fixed only by the form of surface contact between the second ball joint and the ball head. Specifically, friction force is generated between the second ball joint and the ball head through contact of the spherical surface and the plane, and therefore limiting of the ball head is achieved. This kind of mode of face contact makes the stress dispersion between second bulb joint and the bulb, if the medical instrument weight that the instrument chuck was centre gripping is too big, perhaps when the instrument chuck received the exogenic action, probably can lead to the bulb to take place to rotate for second bulb joint to unable realization is spacing to medical instrument stability, and then is unfavorable for promoting the stability and the accuracy nature of operation.

In addition, no matter be the universal connection structure between above-mentioned second ball joint and the bulb, still the universal connector of other structures that exists among the prior art, unable separation usually between ball shell and the spheroid, and adopt the integral type structure in order to promote the joint strength to spare part more. However, in the actual use process, the universal connector with the integrated structure has a limited application range, and can only form universal connection with specific parts, so that the universal connector cannot adapt to complex and changeable external scenes.

It will thus be seen that the prior art is susceptible to further improvement and enhancement.

Disclosure of Invention

The invention provides a fixing seat for a medical instrument, which aims to solve at least one technical problem in the technical problems.

The technical scheme adopted by the invention is as follows:

the invention provides a fixing seat for a medical instrument, wherein the medical instrument is provided with a positioning part, the fixing seat is provided with a clamping unit, the clamping unit comprises at least two clamping pieces, and the clamping pieces can be mutually matched to form a clamping cavity matched with the positioning part; at least one clamping piece is movable, so that the fixing seat is provided with a clamping state for forming the clamping cavity to clamp the positioning part and a releasing state for releasing the clamping of the positioning part.

As a preferred embodiment of the present invention, the fixing base further has a locking unit, the locking unit includes a clamping arm, the clamping arm is movable relative to the clamping members, and the clamping arm can drive at least one of the clamping members to move during the movement of the clamping arm so as to reduce the radial dimension of the clamping cavity, so that the clamping arm has a locking position for locking the clamping unit and an unlocking position for releasing the locking of the clamping unit.

As a preferred embodiment of the present invention, the locking unit further includes a locking structure; the locking structure comprises a locking part arranged on the clamping arm and a stopping part arranged on the clamping piece, in the locking position, the locking part is in backstop fit with the stopping part to limit the clamping arm to move from the locking position to the unlocking position, and in the unlocking position, the locking part is separated from the stopping part; and/or, the locking structure comprises a locking part arranged on one of the clamping pieces and a stopping part arranged on the other clamping piece, in the locking position, the locking part is matched with the stopping part in a stopping way so as to enable the fixing seat to be in a clamping state, and in the unlocking position, the locking part is separated from the stopping part so as to enable the fixing seat to be switched from the clamping state to the releasing state.

As a preferred embodiment of the present invention, the clamping unit further includes a pressing member, and the pressing member drives the movable clamping member to move, so that the fixed seat is switched from the clamping state to the releasing state; in the closed position, the clamping arm covers at least a partial region of the pressing piece.

As a preferred embodiment of the present invention, the clamping unit includes a first clamping member and a second clamping member, the first clamping member being movable relative to the second clamping member to change an inner diameter of the clamping chamber; the pressing piece drives the first clamping piece to move along a first direction, so that the fixed seat is switched from the clamping state to the releasing state; the clamping arm drives the second clamping piece to move along a first direction, so that the fixed seat keeps the clamping state.

As a preferred embodiment of the present invention, the clamping unit further includes a reset member, and the reset member is configured to drive the first clamping member to move in a second direction, which is opposite to the first direction.

In a preferred embodiment of the present invention, the pressing member is provided with a first guide portion, and at least one of the first clamping member and the second clamping member is provided with a second guide portion engaged with the first guide portion.

As a preferred embodiment of the present invention, the clamp arm includes a clamp arm body and a pivot portion connected to the clamp arm body; the pivot part is in rotating connection with the second clamping piece and is provided with an abutting surface with a variable curvature radius, and during the rotation of the clamping arm, the abutting surface is in contact with the second clamping piece and pushes the second clamping piece to move so as to reduce the radial size of the clamping cavity.

As a preferred embodiment of the present invention, the clamping arm body includes a first clamping arm body and a second clamping arm body connected to the first clamping arm body, and an avoidance gap capable of facing the clamping cavity is formed between the first clamping arm body and the second clamping arm body; the pressing piece comprises a first pressing piece and a second pressing piece which are arranged oppositely, at least partial area of the first pressing piece is shielded by the first clamping arm body, and at least partial area of the second pressing piece is shielded by the second clamping arm body in the locking position.

In a preferred embodiment of the present invention, in the clamped state, the inner wall of the clamping cavity is in line contact and/or point contact with the surface of the positioning portion.

The application also discloses other fixing device of bed, other fixing device of bed includes the support frame, the support frame is provided with as above fixing base for medical instrument.

Due to the adoption of the technical scheme, the invention has the beneficial effects that:

1. the fixing seat for the medical instrument provided by the invention realizes clamping of the positioning part through the arrangement of the clamping unit. Specifically, at least one clamping piece in the clamping unit can move, so that the fixed seat has a clamping state and a releasing state. The fixing base with the structure can realize clamping and releasing actions on the positioning part through the movement of the at least one clamping piece, so that a user can replace the positioning part conveniently, the fixing base can fix medical instruments of more types, the application range of the fixing base is further expanded, and the fixing base can adapt to more application scenes. In addition, the clamping cavity formed by matching of the clamping pieces can be matched with the positioning part, and the arrangement mode can facilitate the assembly between the positioning part and the fixed seat on one hand, so that the replacement efficiency of the positioning part is improved; on the other hand can avoid location portion to take place relative motion in the centre gripping chamber to a certain extent to promote the spacing effect of location portion in the fixing base, do benefit to medical instrument's fixed, and then promote the stability and the accuracy nature of operation process by a wide margin.

2. As a preferred embodiment of the present invention, the clamping arm in the locking unit is configured to drive the at least one clamping member to move so as to reduce the radial dimension of the clamping cavity, thereby switching the fixing base from the clamping state to the locking position, further locking the clamping state of the fixing base, preventing the positioning portion from falling off from the clamping cavity when the positioning portion is subjected to an external force in the clamping state, and further improving the clamping effect of the fixing base on the positioning portion to a great extent, so that the fixing base has a first self-locking structure. In addition, the clamping arm is simple in structure and clear in action principle, so that the product can be conveniently processed, manufactured and assembled, the fastening effect of the fixing seat is guaranteed to a certain extent, and meanwhile, the product cost is reduced.

3. As a preferred embodiment of the present invention, the locking structure in the locking unit is configured to enable the fixing base to have the second self-locking structure through the cooperation between the locking portion and the stopping portion on the basis of the first self-locking structure of the fixing base, so as to further improve the limiting effect of the fixing base on the positioning portion, and prevent the movable clamping member from being separated from other clamping members when the movable clamping member in the fixing base is affected by an external force. This kind of mode of setting up can further promote between fixing base and the location portion complex stability and security, does benefit to the steady of operation process and goes on.

4. As a preferred embodiment of the invention, on one hand, the pressing piece is arranged, so that the user can conveniently switch the state of the fixing seat, the force application of the user is facilitated, and the use experience of the user is improved; on the other hand, the clamping arm can cover at least part of the pressing piece in the locking position, so that a user cannot easily observe the pressing piece from the outside, and the probability of touching the pressing piece by the user is reduced; on the other hand, the clamping arm is in contact with the pressing piece to form friction limitation, so that the pressing piece is prevented from moving under stress to a certain extent when a user mistakenly touches the pressing piece, and the fixing seat is prevented from being switched from a clamping state to a releasing state.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic structural diagram of a working channel device according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a fixing seat in an unlocking position according to an embodiment of the present invention;

fig. 3 is a schematic structural view of another fixing base according to an embodiment of the present invention;

FIG. 4 is a schematic structural view of a fixing base in a locking position according to an embodiment of the present invention;

FIG. 5 is a top view of a fixing base in a locking position according to an embodiment of the present invention;

FIG. 6 is a cross-sectional view of a fixing base in a locking position according to an embodiment of the present invention;

FIG. 7 is a side view of a mounting bracket in an unlocked position according to an embodiment of the present invention;

FIG. 8 is a side view of a fixing base rotating from an unlocked position to a locked position according to an embodiment of the present invention;

FIG. 9 is a side view of a fixing base in a locked position according to an embodiment of the present invention;

FIG. 10 is a top view of another embodiment of the fixing base of the present invention in a locking position;

fig. 11 is a schematic structural view of a bedside fixing device according to an embodiment of the present invention.

Wherein the content of the first and second substances,

100 a positioning part;

200 a fixed seat, 210 a clamping unit, 211 a clamping cavity, 212 a first clamping piece, 213 a second clamping piece, 214 a resetting piece, 220 a clamping arm, 221 a clamping arm body, 2211 a first clamping arm body, 2212 a second clamping arm body, 2213 an avoiding notch, 222 a pivoting part, 230 a pressing piece, 231 a first pressing piece, 232 a second pressing piece, 233 a non-slip part, 240 a fastening piece, 241 a first connecting hole, 242 a second connecting hole, 250 a connecting column and 260 a connecting head;

300 support frame, 310 movable arm and 320 positioning arm.

Detailed Description

In order to more clearly explain the overall concept of the present application, the following detailed description is given by way of example in conjunction with the accompanying drawings.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

In addition, in the description of the present invention, it is to be understood that the terms "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present invention and simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus are not to be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

At present, minimally invasive surgeries for abdominal cavities, spines and other parts of bodies at home and abroad are generally performed by establishing surgical channels by adopting a replacement method. Namely, the steps of puncture needle positioning, guide wire embedding, positioning rod embedding, working channel device embedding, positioning rod extraction and the like are sequentially carried out to complete the establishment of the operation channel. The working channel device may be a device as shown in fig. 1, and the ball in fig. 1 is a positioning part 100, and the positioning part 100 is used for connecting with a fixing seat 200 described below in this embodiment.

In addition, in the above replacement method, the operation channel is often deviated due to unbalanced stress during the process of inserting the working channel along the positioning rod, thereby causing a positioning error. If the positioning is wrong, the operation is required to be carried out again, and the operation channel is reset. However, this results in prolonged operation time and increased risk of operation, as well as increased working strength for the surgeon.

Based on this, as shown in fig. 2, an embodiment of the present invention provides a fixing base 200 for a medical instrument, the medical instrument has a positioning portion 100, the fixing base 200 has a clamping unit 210, the clamping unit 210 includes at least two clamping pieces, and each clamping piece can cooperate with each other to form a clamping cavity 211 adapted to the positioning portion 100.

At least one of the clamping members is movable so that the fixing base 200 has a clamping state in which the clamping cavity 211 is formed to clamp the positioning part 100 and a releasing state in which the clamping of the positioning part 100 is released.

It should be noted that the number of the clamping members included in the clamping unit 210 is not particularly limited in the present embodiment. Specifically, the clamping unit 210 may include two oppositely disposed clamping members as shown in fig. 2, or may include three clamping members capable of enclosing to form the clamping cavity 211 as shown in fig. 3, for example, and the clamping unit 210 may even be an assembly of four or even more clamping members. In addition, regarding the specific shape of the clamping cavity 211, the present embodiment is not limited, and the clamping cavity 211 may be a circular cavity as shown in fig. 2 and 3, a square cavity, a rectangular cavity, or a diamond cavity, so that any regular or irregular shape cavity may be used. Preferably, the clamping cavity 211 is adapted to the positioning part 100 to realize stable clamping of the positioning part 100. It should be further noted that the form of the medical device is not limited in the present application, and certainly, the structural form of the positioning portion connected to the medical device is also not limited, and both are not limited to the exemplary illustration in fig. 1. The medical instrument can also be an endoscope, a surgical clamp, a laparoscope and the like, and can also be a common patient limb supporting structure, even a medical illuminating lamp for conveniently illuminating a surgical site and the like.

Accordingly, the arrangement between the clamping members may be of various types based on the shape of the clamping cavity 211 and the number of clamping members. If the clamping cavity 211 in fig. 3 is a circular cavity and the number of the clamping members is three, for example, the three clamping members may be uniformly arranged around the circumferential direction to form a circular clamping cavity 211; if the clamping cavity 211 is a square cavity and the number of the clamping pieces is four, the four clamping pieces can evenly divide the square cavity into four equal parts, and the four clamping pieces surround to form the square cavity; if the clamping cavity 211 is a circleThe four clamping pieces can divide the circular cavity into four parts or divide the circular cavity into four parts in sequence

Portions are,

Portions are,

Portions are,

And the like, and this example is not intended to limit the same. Moreover, the layout of the clamping members is not described in detail herein.

In addition, it should be noted that, since the present embodiment provides the holder structure with at least one movable clamp, the skilled person can conceive various moving manners of the clamp based on the prior experience and prior knowledge. Specifically, the clamping members may move along a radial direction of the clamping cavity 211 as shown in fig. 2, or move along an axial direction of the clamping cavity 211 as shown in fig. 2, or horizontally rotate around a certain position in the clamping unit 210, or even rotate up and down around a certain axis, and the like, and the specific moving manner of at least one clamping member is not limited in this embodiment. In another aspect, specific types of movement of the clamp members in this embodiment include, but are not limited to, the following examples: sliding, rolling, flipping, etc. In another aspect, it is obviously understood that the at least one movable clamp member in the present embodiment includes one movable clamp member, and two, three or all movable clamp members.

The fixing base 200 for medical equipment provided by the invention realizes clamping of the positioning part 100 through the arrangement of the clamping unit 210. Specifically, at least one of the clamping members in the clamping unit 210 is movable to enable the fixing base 200 to have a clamping state and a releasing state. The fixing base 200 with the structure can clamp and release the positioning part 100 through the movement of at least one clamping piece, so that a user can replace the positioning part 100 conveniently, the fixing base 200 can fix more types of medical instruments, the use range of the fixing base 200 is further enlarged, and the fixing base 200 can adapt to more application scenes. In addition, the clamping cavity 211 formed by the matching of the clamping pieces can be matched with the positioning part 100, and the arrangement mode can facilitate the assembly between the positioning part 100 and the fixed seat 200 on one hand, so that the replacement efficiency of the positioning part 100 is improved; on the other hand can avoid to a certain extent that location portion 100 takes place relative motion in centre gripping chamber 211 to promote the spacing effect of location portion 100 in fixing base 200, do benefit to medical instrument's fixed, and then promote the stability and the accuracy nature of operation process by a wide margin.

It should be noted that although the fixing base 200 can clamp the positioning portion 100 in the clamped state, the clamping is more similar to the preliminary limiting or pre-tightening of the positioning portion 100, that is, the clamping force generated by the clamping member on the positioning portion 100 can only overcome the influence of the acting force in a certain range (such as the gravity of the positioning portion 100), so that the positioning portion 100 can be clamped by the clamping unit 210. If the user presses the positioning portion 100 in the clamping state or the positioning portion 100 is subjected to other external forces, the clamping force generated by the clamping unit 210 cannot overcome the influence of the self-gravity and the external force of the positioning portion 100 at the same time, and can only be released from the clamping cavity 211.

In order to avoid the above situation, as a preferred embodiment of the present invention, referring to fig. 2 and 4, for example, a locking unit (not labeled) may be provided on the fixing base 200. Specifically, the locking unit may comprise a clamping arm 220, wherein the clamping arm 220 is movable relative to the clamping members, and the clamping arm 220 can drive at least one clamping member to move during the movement to reduce the radial dimension of the clamping cavity 211, so that the clamping arm 220 has a locking position (such as the position shown in fig. 4) for locking the clamping unit 210 and an unlocking position (such as the position shown in fig. 2) for unlocking the clamping unit 210.

In this embodiment, the movement of the clamp arm 220 relative to the clamping members may be rotational, sliding, or even rolling, and the like, and is similar to the movement of the at least one clamping member, and will not be described herein. In addition, the specific structure, number and arrangement of the clamping arms 220 in the present embodiment may also be different, for example, the clamping arms 220 may be hollow as shown in fig. 2, and the number is one and is rotatably arranged at one side of the clamping unit 210; the number of the clamping arms 220 may be two, and the two clamping arms 220 are respectively rotatably disposed on two opposite sides of the clamping unit 210, which is not limited in the present embodiment.

The clamping arm 220 is arranged to switch the fixing seat 200 from the clamping state to the locking position, further locking of the clamping state of the fixing seat 200 is achieved, the positioning portion 100 is prevented from falling off from the clamping cavity 211 when being subjected to external force in the clamping state, the clamping effect of the fixing seat 200 on the positioning portion 100 is further improved to a great extent, and the fixing seat 200 is provided with a first self-locking structure. In addition, the clamping arm 220 has a simple structure and a clear action principle, so that the product is convenient to process, manufacture and assemble, and the fastening effect of the fixing seat 200 is ensured to a certain extent, and meanwhile, the product cost is reduced.

Continuing with the structure of the fixing base 200 shown in fig. 4 as an example, if the clamping arm 220 is in the locking position and the fixing base 200 is not affected by an external force or is subjected to a small external force, the fixing base 200 can form a good clamping effect on the positioning portion 100. However, if the clamping member in the fixing base 200 is subjected to a large horizontal pulling force, the clamping member may move horizontally by an external force, so that the fixing base 200 cannot maintain an effective clamping of the positioner 100.

Based on this, as another preferred implementation of the embodiment of the present invention, the locking unit may further include a locking structure (not shown in the figure), for example. The locking structure may include a locking portion (not shown) disposed on the clamping arm 220, and a stopping portion (not shown) disposed on the clamping member.

In the locked position, the locking portion cooperates with the stop portion stop to limit the movement of the clamping arm 220 from the locked position to the unlocked position; in the unlocking position, the locking part is separated from the stopping part. And/or, the locking structure may include a locking portion provided to one of the clamping members, and a stopping portion provided to the other clamping member; in the locking position, the locking portion cooperates with the stopper portion to keep the fixing base 200 in the clamping state; in the unlocking position, the locking portion is disengaged from the stopper portion, so that the fixing base 200 can be switched from the clamping state to the releasing state.

The locking structure in the above embodiment may be a snap structure, wherein one of the locking portion and the stopping portion may be a snap, and the other may be a slot; the locking structure can also be a magnetic attraction structure, wherein one of the locking part and the stopping part can be a first magnet, the other of the locking part and the stopping part can be a second magnet, and magnetic force can be generated between the first magnet and the second magnet; the locking structure may also be a screw fastening structure in which one of the locking portion and the stopper portion may be a bolt, and the other of the locking portion and the stopper portion may be a screw hole or the like. Although the types of the locking structures are various, the purpose of any type of the locking structures is to lock the clamping unit 210 and prevent the clamping unit 210 from being switched from the clamping state to the releasing state when a large external force is applied to the clamping unit, and the specific form of the locking structures is not limited in this embodiment and is not illustrated.

The setting of this embodiment locking structure can be on the basis of the first way self-locking structure of fixing base 200, through the cooperation between locking portion and the backstop portion for fixing base 200 possesses the second way self-locking structure, thereby promotes fixing base 200 again and to the spacing effect of location portion 100, when preventing that mobilizable holder from receiving the influence of external force in fixing base 200, with the appearance of the phase separation condition between other holders. This kind of arrangement can further promote stability and the security of cooperation between fixing base 200 and location portion 100, does benefit to the steady progress of operation process.

In an embodiment, as shown in fig. 2 and 4, the clamping unit 210 may further include a pressing member 230, and the pressing member 230 may drive the movable clamping member to move, so as to switch the fixing base 200 from the clamping state to the releasing state. Furthermore, in the locked position, the clamping arm 220 may cover at least a partial area of the pressing piece 230.

It should be noted that the structure, pressing manner, and the like of the pressing member 230 should be set or adjusted accordingly according to the structure and movement manner of the clamping unit 210, and if the clamping unit 210 has the structure shown in fig. 2, the pressing member 230 may be a sliding pressing member 230 provided at both sides of the clamping unit 210. The following description of the present embodiment will describe the specific structure of the pressing member 230 and the driving manner of the clamping member in detail, and will not be expanded herein.

The pressing piece 230 is arranged, on one hand, the user can switch the state of the fixing seat 200 conveniently, the force application of the user is facilitated, and the use experience of the user is improved; on the other hand, the clamping arm 220 can cover at least part of the region of the pressing piece 230 in the locking position, so that the user cannot easily observe the pressing piece 230 from the outside, and the probability of touching the pressing piece 230 by the user is reduced; on the other hand, the clamping arm 220 contacts with the pressing member 230 to form a friction limit, so that when the user accidentally touches the pressing member 230, the pressing member 230 is prevented from moving under force to some extent, and the fixing base 200 is prevented from being switched from the clamping state to the releasing state.

In order to clearly understand the fixing base 200 for medical device provided by the present invention, a specific embodiment will be described below:

in this embodiment, referring to fig. 5, the number of the clamping members is two, and the two clamping members are respectively referred to as a first clamping member 212 and a second clamping member 213, and the first clamping member 212 can move relative to the second clamping member 213 to change the inner diameter of the clamping cavity 211. Moreover, the pressing member 230 may drive the first clamping member 212 to move along a first direction (as indicated by an arrow in fig. 5), so as to switch the fixing base 200 from the clamping state to the releasing state; the clamping arm 220 can drive the second clamping member 213 to move in the first direction, so as to maintain the fixing base 200 in the clamped state. In this embodiment, the moving direction of the clamping arm 220 driving the second clamping member 213 is the same as the moving direction of the pressing member 230 driving the first clamping member 212, so that the assisting effect of the clamping arm 220 and the pressing member 230 on the formation of the clamping cavity 211 is consistent, and the same-direction movement of the first clamping member 212 and the second clamping member 213 avoids the misalignment of the two in the axial direction of the clamping cavity 211, and even after repeated and frequent switching between the clamping state and the releasing state, and the unlocking position and the locking position during use, the first clamping member 212 and the second clamping member 213 can still ensure no misalignment in the axial direction after being matched, so that the stability can be ensured.

Further, in order to achieve the relative movement between the first clamping member 212 and the second clamping member 213, the first clamping member 212 and the second clamping member 213 are prevented from being disengaged when the relative movement occurs. Referring to fig. 6, the fixing base 200 may further include a fastening member 240, and the first clamping member 212 and the second clamping member 213 may further have a first connection hole 241 and a second connection hole 242, respectively, and the fastening member 240 may pass through the first connection hole 241 and the second connection hole 242 to connect the first clamping member 212 and the second clamping member 213.

The fastening member 240 may be a bolt, one end of the bolt may be in threaded engagement with the second clamping member 213, the other end of the bolt may be a bolt head in stop engagement with the first connection hole 241, a middle portion of the bolt is a smooth stud, and the stud is engaged with the first connection hole 241 and the second connection hole 242, so that the first clamping member 212 may slide with the stud as a guide rail. The structure of the fastening member 240 is very simple, and the first clamping member 212 is prevented from being separated from the second clamping member 213 while the first clamping member 212 slides relative to the second clamping member 213, thereby facilitating the guarantee of the structural stability of the fixing base 200. The fastening member 240 may be a bolt, an L-shaped pin, a T-shaped post, or the like, and the embodiment is not limited to the specific structure of the fastening member 240.

In addition, the fixing base 200 may further include a connection column 250 disposed on the second clamping member 213, wherein a threaded hole is opened in the connection column 250, so that the connection column 250 can be in threaded engagement with the fastening member 240.

Still further, the clamping unit 210 in the present embodiment may further include a reset member 214, wherein the reset member 214 is configured to drive the first clamping member 212 to move in a second direction (as indicated by an arrow in fig. 6), and the second direction is opposite to the first direction.

The arrangement of the reset piece 214 enables the first clamping piece 212 to have an automatic reset function, after the external force acting on the pressing piece disappears, a user does not need to reset manually, and the elastic force provided by the reset piece 214 can realize the switching of the fixing seat 200 from the release state to the clamping state, so that the operation of the user on the fixing seat 200 can be simplified, and good use experience can be provided for the user.

It should be noted that the reset element 214 may be a reset spring, an elastic rubber element, a metal elastic sheet, or the like, and the present embodiment is not limited to the type of the reset element 214. In addition, the resetting member 214 may be connected to only the first clamping member 212, or may be connected to the first clamping member 212 and the second clamping member 213, in other words, one or two resetting members 214 may be provided, and the number and the arrangement manner of the resetting members 214 are not limited in this embodiment.

As a preferred embodiment of the present embodiment, as shown in fig. 5 and 6, the pressing member 230 may be provided with a first guide 231, and at least one of the first and

second clamping members

212 and 213 may be provided with a second guide 232 engaged with the first guide 231. Here, the first guide 231 may be a guide groove, and the second guide 232 may be a guide post. Also, the guide direction when the first guide portion 231 and the second guide portion 232 are engaged may be inclined in the extension direction of the contact surface of the first clamping member 212 and the second clamping member 213.

As for the inclination angles of the first guide 231 and the second guide 232, the present embodiment is not limited, and may be 15 °, 20 °, 30 °, or the like. In the present embodiment, the number of the first guide portions 231 and the second guide portions 232 is not limited. In addition, the first guide portion 231 and the second guide portion 232 may be engaged with the guide post and the guide groove, or may be engaged with the slide groove and the slide rail, or may be engaged with the guide wheel and the rib. It should be understood that the specific implementation structure of the first guiding portion 231 and the second guiding portion 232 can be various, and will not be described in detail herein.

The arrangement of the first guide part 231 and the second guide part 232 in the pressing part 230 can guide the moving process of the pressing part 230 to a certain extent, so that the user can operate the pressing part 230 conveniently, the switching of the fixing base 200 between the clamping state and the releasing state is facilitated, and the user can replace and take and place the positioning part 100 conveniently.

In one particular example, as shown with reference to fig. 7-9, the clamp arm 220 may include a clamp arm body 221 and a pivot portion 222 connected to the clamp arm body 221. Wherein the pivot portion 222 can be rotatably connected with the second clamping member 213, and the pivot portion 222 has an abutting surface with a varying curvature radius, and during the rotation of the clamping arm 220, the abutting surface contacts with the second clamping member 213 and pushes the second clamping member 213 to move so as to reduce the radial dimension of the clamping cavity 211. In the present embodiment, the pivot portion 222 has the abutting surface with a variable curvature radius to push the second clamping member 213 to move through the abutting surface in the rotation process of the clamping arm 220, such a design manner is compared with a technical means that the second clamping member 213 is driven to move by adopting a sliding type or other motion manner, the movement stroke and the movement range of the clamping arm 220 are greatly reduced, which not only helps to improve the adjustment efficiency, but also has a compact overall structure, which helps to miniaturize the fixing base, and the miniaturization of the fixing base helps to reduce the influence on the visual field of a doctor in the surgical process, so as to facilitate the doctor to perform the surgical operation.

As shown in fig. 7, when the clamp arm 220 is in the unlocking position, there is a gap between the abutting surface of the pivot portion 222 and the second clamping member 213, no force acts therebetween, and the second clamping member 213 does not move; as shown in fig. 8, when the clamp arm 220 is rotated from the unlocking position to the locking position, the abutment surface comes into contact with the second clamping member 213, and as the radius of curvature of the abutment surface increases, the pressing force of the pivot portion 222 on the second clamping member 213 increases accordingly, and the second clamping member 213 also starts to move toward the first clamping member 212; as shown in fig. 9, when the clamping arm 220 is in the locking position, the abutment surface with the largest radius of curvature in the pivot portion 222 contacts the second clamping member 213, so that the radial dimension of the clamping cavity 211 formed by the second clamping member 213 and the first clamping member 212 is the smallest, i.e. the clamping effect of the fixing base 200 on the positioning portion 100 is the best.

Further, the rotational connection between the pivot portion 222 and the second clamping member 213 may be a rotational connection between the pivot portion 222 and the connection post 250 described above. Specifically, the pivot portion 222 may be formed with a first shaft hole (not labeled), the connection column 250 is formed with a second shaft hole (not labeled), and the fixing base 200 may further include a rotation shaft (not labeled) that can pass through the first shaft hole and the second shaft hole to realize the rotational connection between the connection column 250 and the pivot portion 222. On the other hand, regarding the specific structure of the pivot portion 222, the present embodiment is not limited, and it may be a cam structure as shown in fig. 7 to 9, an eccentric wheel structure, a grooved wheel structure, and the like.

It should be noted that, although the structure and size of the clamping arm body 221 are not limited in this embodiment, in order to facilitate the user to hold and apply force to the clamping arm 220, the length of the clamping arm body may be greater than the length of the clamping unit 210, so as to increase the length of the rotating arm of the clamping arm 220, so that the user can implement the rotating operation of the clamping arm 220 with a smaller force. And, can set up the arcwall face with user's hand type looks adaptation in the edge of pressing from both sides tight arm body 221 to make the product of processing more accord with the ergonomic principle, when promoting the fixing base 200 aesthetic property, avoid the user to lead to the hand injured's condition to take place because of frequently operating clamping arm 220, and then do benefit to the promotion and the improvement of product security performance to a certain extent.

Further, referring to fig. 10, the clamp arm body 221 of the present embodiment may include a first clamp arm body 2211 and a second clamp arm body 2212 connected to the first clamp arm body 2211, and an avoidance gap 2213 capable of facing the clamping cavity 211 is formed between the first clamp arm body 2211 and the second clamp arm body 2212. In addition, the pressing piece 230 may include a first pressing piece 231 and a second pressing piece 232 which are oppositely disposed, and when the clamping arm 220 is in the locking position, at least a partial area of the first pressing piece 231 is shielded by the first clamping arm body 2211, and at least a partial area of the second pressing piece 232 is shielded by the second clamping arm body 2212.

The arrangement of the avoiding gap 2213 can prevent the clamping arm 220 from interfering with the positioning portion 100 located in the clamping cavity 211 when the clamping arm 220 is located at the locking position, so as to avoid the mutual acting force generated by the contact between the clamping arm 220 and the positioning portion 100, further improve the clamping effect of the fixing base 200 on the positioning portion 100, and facilitate the stability of the whole structure of the fixing base 200. In addition, the first pressing piece 231 and the second pressing piece 232 not only conform to the habit of one-hand operation of people, but also facilitate the operation of both hands of a user, so that the user can switch the clamping state and the releasing state of the fixing seat 200 more conveniently; on the other hand, the relative arrangement between the first pressing member 231 and the second pressing member 232 makes the relative movement process between the first clamping member 212 and the second clamping member 213 more stable, and avoids the deviation of the first clamping member 212 caused by the arrangement of the single-side pressing member 230 when the first clamping member 212 moves, so that the movement process of the first clamping member 212 is smoother, and the sensitivity of switching between the clamping state and the releasing state in the fixing base 200 is improved. Moreover, the first clamping arm body 2211 and the second clamping arm body 2212 respectively shield at least partial areas of the first pressing piece 231 and the second pressing piece 232, and the arrangement mode can further improve the capability of preventing the fixed seat 200 from being touched by mistake.

As a preferred embodiment of the present invention, in the clamped state of the holder 200, the inner wall of the clamping cavity 211 may be in line contact and/or point contact with the surface of the positioning part 100. Compared with the surface contact mode between the spherical shell and the spherical body in the prior art, no matter the point contact mode or the line contact mode, the contact area between the positioning part 100 and the clamping cavity 211 can be reduced, so that the stress of the clamping cavity 211 acting on the positioning part 100 is concentrated on certain points or certain lines, and the fixing effect of the clamping cavity 211 on the positioning part 100 is further improved. Even if the positioning part 100 is acted by external force, the arrangement mode can avoid the relative movement of the positioning part 100 in the clamping cavity 211 to a great extent, thereby being beneficial to the pose fixation of medical instruments and further being beneficial to the improvement of the stability and the accuracy of the operation process.

The point contact may be implemented in various ways, for example, a small protrusion may be provided on the inner wall of the clamping cavity 211, and the number of the protrusions may be multiple, and the multiple protrusions contact with the surface of the positioning part 100, so as to improve the friction between the positioning part 100 and the clamping cavity 211, and the like. The line contact may be implemented in various ways, for example, a vertical rib, a horizontal rib, an annular rib, etc. may be disposed on the inner wall of the clamping cavity 211, or a circular hole, a triangular hole, a rectangular hole, or a diamond hole, etc. may be disposed on the inner wall of the clamping cavity 211, and the embodiment does not limit the specific form of the point contact and the line contact between the clamping cavity 211 and the positioning portion 100.

As a preferred embodiment of the present invention, as shown in fig. 10, the surface of the pressing member 230 may be further provided with a non-slip portion 233. The anti-slip part 233 can increase the friction between the user's hand and the pressing member 230, thereby preventing the user from slipping off the pressing member 230 due to uneven force application or wetting of the hand when the user presses the pressing member 230, and facilitating the opening and closing of the pressing member 230 while facilitating the force application of the user.

The anti-slip portion 233 in this embodiment may be a continuous groove provided on the surface of the pressing member 230, may also be a plurality of ribs provided at intervals, may also be an anti-slip strip having a diagonal line, and the specific structure of the anti-slip portion 233 is not limited in this embodiment.

As shown in fig. 11, the present application further discloses a bedside fixing device, the bedside fixing device includes a support frame 300, and the support frame 300 is provided with the fixing seat 200 for medical devices as described above. The present application is not limited to the arrangement position and the structure form of the support frame 300, that is, the structure of the support frame 300 is not limited to the structure form in fig. 11. In one particular example, the support 300 is a floor stand, i.e., the support 300 has a base that can be supported on the ground or other support surface beside the operating bed. As a preferred embodiment of the present application, the support frame 300 is fixed to an operating table, and further, the support frame 300 is movable along the operating table. The support frame 300 may have one or more degrees of freedom, so as to drive the fixing base to move, and adjust the position of the fixing base relative to the operating table.

Further, as shown in fig. 2 or fig. 4, the fixing base 200 may further include a connector 260 disposed on at least one of the first clamping member 212 and the second clamping member 213, wherein the connector 260 can be connected to the supporting frame 300.

As a preferred embodiment of this application, the support frame 300 includes the digging arm 310 and the location arm 320, the one end of digging arm 310 with fixing base 200 links to each other, and drives fixing base 200 is rotatory around the first axis at least, the location arm set up in one side of the bed body, just the location arm 320 have with digging arm 310 swing joint's link, just the projection of link on the horizontal plane falls into the projection range of the bed body on the horizontal plane.

The method can be realized by adopting or referring to the prior art in places which are not described in the invention.

The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments.

The above description is only an example of the present invention, and is not intended to limit the present invention. Various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A fixing seat for medical equipment is provided with a positioning part, and is characterized in that the fixing seat is provided with a clamping unit, the clamping unit comprises at least two clamping pieces, and the clamping pieces can be mutually matched to form a clamping cavity matched with the positioning part;

at least one clamping piece is movable, so that the fixing seat is provided with a clamping state for forming the clamping cavity to clamp the positioning part and a releasing state for releasing the clamping of the positioning part.

2. The holder according to claim 1, further comprising a locking unit, wherein the locking unit comprises a clamping arm, the clamping arm is movable relative to the clamping members, and the clamping arm is capable of driving at least one of the clamping members to move during the movement of the clamping arm to reduce the radial dimension of the clamping cavity, so that the clamping arm has a locked position for locking the clamping unit and an unlocked position for unlocking the clamping unit.

3. The holder according to claim 2, wherein the locking unit further comprises a locking structure;

the locking structure comprises a locking part arranged on the clamping arm and a stopping part arranged on the clamping piece, in the locking position, the locking part is in backstop fit with the stopping part to limit the clamping arm to move from the locking position to the unlocking position, and in the unlocking position, the locking part is separated from the stopping part; and/or the like and/or,

the locking structure comprises a locking part arranged on one of the clamping pieces and a stopping part arranged on the other clamping piece, wherein in the locking position, the locking part is matched with the stopping part in a stopping way so as to enable the fixing seat to be in a clamping state, and in the unlocking position, the locking part is separated from the stopping part so as to enable the fixing seat to be switched from the clamping state to the releasing state.

4. The fixing base for the medical apparatus according to claim 2, wherein the clamping unit further comprises a pressing member, the pressing member drives the movable clamping member to move, so that the fixing base is switched from the clamping state to the releasing state;

in the closed position, the clamping arm covers at least a partial region of the pressing piece.

5. The holder according to claim 4, wherein the clamping unit comprises a first clamping member and a second clamping member, the first clamping member being movable relative to the second clamping member to change an inner diameter of the clamping cavity;

the pressing piece drives the first clamping piece to move along a first direction, so that the fixed seat is switched from the clamping state to the releasing state; the clamping arm drives the second clamping piece to move along a first direction, so that the fixed seat keeps the clamping state.

6. The holder of claim 5, wherein the clamping unit further comprises a reset member for driving the first clamping member to move in a second direction, the second direction being opposite to the first direction.

7. The holder according to claim 5, wherein the pressing member is provided with a first guide portion, and at least one of the first holding member and the second holding member is provided with a second guide portion engaged with the first guide portion.

8. The holder according to claim 5, wherein the clamp arm includes a clamp arm body and a pivot portion connected to the clamp arm body;

the pivot part is in rotating connection with the second clamping piece and is provided with an abutting surface with a variable curvature radius, and during the rotation of the clamping arm, the abutting surface is in contact with the second clamping piece and pushes the second clamping piece to move so as to reduce the radial size of the clamping cavity.

9. The fixing seat for the medical instrument according to claim 8, wherein the clamping arm body comprises a first clamping arm body and a second clamping arm body connected with the first clamping arm body, and an avoidance gap capable of facing the clamping cavity is formed between the first clamping arm body and the second clamping arm body;

the pressing piece comprises a first pressing piece and a second pressing piece which are arranged oppositely, at least partial area of the first pressing piece is shielded by the first clamping arm body, and at least partial area of the second pressing piece is shielded by the second clamping arm body in the locking position.

10. The holder according to any of claims 1 to 9, wherein the holder comprises a base,

in the clamping state, the inner wall of the clamping cavity is in line contact and/or point contact with the surface of the positioning part.