CN221205568U - Connecting device and acetabular file operation assembly - Google Patents
Connecting device and acetabular file operation assembly Download PDFInfo
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- CN221205568U CN221205568U CN202322252784.4U CN202322252784U CN221205568U CN 221205568 U CN221205568 U CN 221205568U CN 202322252784 U CN202322252784 U CN 202322252784U CN 221205568 U CN221205568 U CN 221205568U
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Abstract
The application provides a connecting device and an acetabular file surgery assembly. Wherein, connecting device is used for connecting acetabular file and acetabular file connecting rod, and acetabular file is including the connecting rod that is used for receiving moment of torsion, and connecting device includes: one end of the transmission shaft is provided with an extension part, and the extension part is used for transmitting torque to the connecting rod when the transmission shaft rotates circumferentially so as to enable the acetabular file to rotate; the installation piece is arranged on the transmission shaft, the installation piece is provided with a connecting rod clamping groove for clamping the connecting rod, the installation piece is configured to move along the axial direction of the transmission shaft and is provided with a first position and a second position relative to the extension part, the extension part can prevent the connecting rod from falling out of the clamping groove in the first position, the extension part allows the connecting rod to fall out of the clamping groove in the second position, and the moving direction of the installation piece from the first position to the second position is consistent with the extending direction of the extension part. The connecting device can solve the problem that the existing connecting device needs two hands to operate when the connecting device is disconnected with the acetabular bone file, and is convenient to detach the acetabular bone file.
Description
Technical Field
The application relates to the technical field of medical instruments, in particular to a connecting device and an acetabular file surgery assembly.
Background
In hip joint replacement operation, the acetabular file is connected with a power device through an acetabular file connecting rod, and the power device provides rotary motion to finish grinding of human acetabulum. The existing connection mode of the acetabular file connecting rod and the acetabular file is generally a mode of clamping grooves and movable pin shafts, namely after the acetabular file is clamped into the clamping grooves (the clamping grooves are fixedly connected with the acetabular file connecting rod), the movable pin shafts are ejected out by spring force to block openings of the clamping grooves. However, with this type of connection, it is inconvenient to operate with both hands (one hand pulls the movable pin and the other hand removes the acetabular file) when removing the acetabular file.
Disclosure of utility model
The embodiment of the application at least provides a connecting device and an acetabular file operation assembly, which can solve the problem that the existing connecting device needs two hands to operate when the connecting device is disconnected with an acetabular file, and is convenient to detach the acetabular file.
In a first aspect, embodiments of the present application provide a connection device for connecting an acetabular file to an acetabular file connecting rod, the acetabular file including a connecting rod for receiving torque, the connection device comprising:
A drive shaft having an extension at one end for transmitting torque to the connecting rod when the drive shaft is rotated circumferentially to rotate the acetabular file;
The installation piece is arranged on the transmission shaft, the installation piece is provided with a connecting rod clamping groove used for clamping the connecting rod, the installation piece is configured to move along the axial direction of the transmission shaft and is provided with a first position and a second position relative to the extension part, the extension part can prevent the connecting rod from falling out of the clamping groove in the first position, the extension part allows the connecting rod to fall out of the clamping groove in the second position, and the moving direction of the installation piece from the first position to the second position is consistent with the extending direction of the extension part.
In a first possible implementation, the mount is specifically configured to be movable from the first position to the second position against a preset resistance.
With reference to the foregoing possible implementation manner, in a second possible implementation manner, the connection device further includes:
And an elastic member disposed between the driving shaft and the mounting member, the elastic member being configured to contract/stretch when the mounting member moves from the first position to the second position so as to apply the preset resistance to the mounting member.
With reference to the foregoing possible implementation manner, in a third possible implementation manner, the elastic member is a spring.
With reference to the foregoing possible implementation manner, in a fourth possible implementation manner, the connection device further includes:
The bottom support is arranged on the transmission shaft;
a gland disposed on the mounting member;
The mounting piece moves from the first position to the second position, and the collet and the gland are mutually close to each other so as to enable the elastic piece to shrink.
In combination with the foregoing possible implementation manner, in a fifth possible implementation manner, the shoe is disposed on the mounting member and is in sliding fit with the mounting member, and the shoe is detachably connected with the transmission shaft.
In combination with the foregoing possible implementation manner, in a sixth possible implementation manner, a first limiting portion is provided on the collet, a second limiting portion is provided on the transmission shaft, and the first limiting portion and the second limiting portion are configured to have a locked state and an unlocked state in different positional relationships, and in the locked state, the collet can be prevented from moving along an extension direction of the extension portion, and in the unlocked state, the collet is allowed to move along the extension direction of the extension portion.
In combination with the foregoing possible implementation manner, in a seventh possible implementation manner, one end of the mounting member and the transmission shaft are nested, a cavity is formed between the mounting member and the transmission shaft, and the elastic member is disposed in the cavity.
In combination with the foregoing possible implementation manner, in an eighth possible implementation manner, the connecting rod clamping slot opening has a clamping surface, and the clamping surface has a predetermined angle with the extending direction of the extending portion.
In a second aspect, an embodiment of the present application further provides an acetabular file surgical assembly, including an acetabular file connecting rod, an acetabular file and a connection mechanism, wherein one end of the acetabular file connecting rod is connected with the acetabular file through the connection mechanism, and the connection mechanism is the connection device described above.
The technical scheme of the application has the following beneficial technical effects:
According to the connecting device disclosed by the embodiment of the application, the mounting piece of the connecting device can move along the axial direction of the transmission shaft, so that the clamping groove of the connecting rod and the extending part have different position matching relations, and the connecting device can be connected with the acetabular file or disconnected with the acetabular file. In addition, as the moving direction of the mounting piece from the first position to the second position is consistent with the extending direction of the extending part, the mounting piece can reach the second position by pulling the connecting rod along the extending direction of the extending part, and the action of pulling the connecting rod and the action of enabling the connecting rod to be separated from the connecting rod clamping groove can be completed by operating the acetabular file by one hand, the connection relation between the connecting device and the acetabular file can be released by operating the acetabular file by one hand, and therefore, the quick connection and the disassembly of the connecting device and the acetabular file can be realized.
In order to make the above objects, features and advantages of the present application more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are necessary for the embodiments to be used are briefly described below, the drawings being incorporated in and forming a part of the description, these drawings showing embodiments according to the present application and together with the description serve to illustrate the technical solutions of the present application. It is to be understood that the following drawings illustrate only certain embodiments of the application and are therefore not to be considered limiting of its scope, for the person of ordinary skill in the art may admit to other equally relevant drawings without inventive effort.
Fig. 1 shows a schematic structural diagram of a connection device according to an embodiment of the present application;
FIG. 2 is a schematic diagram of a connection device according to an embodiment of the present application;
FIG. 3 shows a cross-sectional view of a connection device provided by an embodiment of the present application;
FIG. 4 shows a perspective assembly view of a connection device provided by an embodiment of the present application;
FIG. 5 shows a schematic structural view of a composite member provided by an embodiment of the present application;
FIG. 6 illustrates a schematic structural view of an acetabular file surgical assembly provided by an embodiment of the application;
100, connecting device; 110. a transmission shaft; 111. an extension; 112. a hanging lug clamping groove; 113. a chute; 120. a mounting member; 121. a connecting rod clamping groove; 122. clamping the surface; 130. an elastic member; 140. a bottom support; 141. hanging lugs; 150. a gland; 200. acetabular files; 210. a connecting rod; 300. acetabular file connecting rod.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail with reference to the accompanying drawings.
It should be noted that unless otherwise defined, technical or scientific terms used in one or more embodiments of the present specification should be given the ordinary meaning as understood by one of ordinary skill in the art to which the present application pertains. The use of the terms "first," "second," and the like in one or more embodiments of the present description does not denote any order, quantity, or importance, but rather the terms "first," "second," and the like are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof, but does not exclude other elements or items. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", etc. are used merely to indicate relative positional relationships, which may also be changed when the absolute position of the object to be described is changed.
Fig. 1 shows a schematic structural diagram of a connection device according to an embodiment of the present application. Fig. 2 shows a schematic connection diagram of a connection device according to an embodiment of the present application. Fig. 3 shows a cross-sectional view of a connection device provided by an embodiment of the present application. Fig. 4 shows a first perspective assembly view of a connection device according to an embodiment of the present application. Fig. 5 shows a second perspective assembly view of the connection device according to an embodiment of the present application. Fig. 6 shows a schematic structural view of an acetabular file surgical assembly provided by an embodiment of the application. The connecting device 100 according to the embodiment of the present application is used for connecting the acetabular file 200 with the acetabular file connecting rod 300, and the acetabular file 200 includes a connecting rod 210 for receiving torque.
Referring to fig. 1 and 2 together, a connection device 100 according to an embodiment of the present application includes: a drive shaft 110 and a mount 120. One end of the drive shaft 110 has an extension 111, the extension 111 being adapted to transmit torque to the connecting rod 210 when the drive shaft 110 is rotated circumferentially to rotate the acetabular file 200. The mount 120 is disposed on the drive shaft 110. The mount 120 has a link catching groove 121 for catching the link 210, and the mount 120 is configured to be movable in an axial direction of the transmission shaft 110 and has a first position and a second position with respect to the extension 111. In the first position, the extension 111 can prevent the connecting rod 210 from coming out of the clamping groove. In the second position, the extending portion 111 allows the connecting rod 210 to be separated from the connecting rod clamping groove 121, and the moving direction of the mounting piece 120 from the first position to the second position is consistent with the extending direction of the extending portion 111.
The transmission shaft 110 and the extension 111 may be separate members formed integrally, or may be a combined member fixed integrally by a fixed connection means such as welding or screwing. In an embodiment of the present application, the drive shaft 110 and the extension 111 are preferably integrally formed as separate components. For example, one end of the drive shaft 110 extends axially outwardly to form an extension 111. This arrangement can improve the connection strength of the drive shaft 110 and the extension 111, and can also reduce the connection process, which is advantageous in improving efficiency and reducing cost.
It may be that the extending portion 111 and the connecting rod clamping groove 121 are multiple, the extending portion 111 and the connecting rod clamping groove 121 are respectively corresponding, and the extending portion 111 and the connecting rod clamping groove 121 are alternately distributed at intervals along the circumferential direction of the transmission shaft 110. Wherein the corresponding extension 111 and the connecting rod clamping groove 121 cooperate to form locking or unlocking of the corresponding connecting rod 210.
In use, as the mounting member 120 is movable in the axial direction of the drive shaft 110, this allows the connecting rod catch 121 to have a different positional mating relationship with the extension 111, thereby enabling connection of the connecting device 100 to the acetabular file 200 or disconnection of the connecting device 100 from the acetabular file 200. Specifically, the connection device 100 and the acetabular file 200 may be connected by moving the mounting member 120 to the first position, and preventing the connecting rod 210 from exiting the connecting rod catch 121 with the extension 111. The connection between the connection device 100 and the acetabular file 200 can be released by moving the mounting member 120 to the second position and rotating the acetabular file 200 to disengage the connecting rod 210 from the connecting rod slot 121.
In addition, since the direction in which the mounting member 120 moves from the first position to the second position coincides with the extending direction of the extending portion 111, pulling the connecting rod 210 along the extending direction of the extending portion 111 can make the mounting member 120 reach the second position, and the action of pulling the connecting rod 210 and the action of removing the connecting rod 210 from the connecting rod clamping groove 121 can be completed by operating the acetabular file 200 with one hand. Therefore, the connection relation between the connecting device 100 and the acetabular file 200 can be released by one-hand operation, so that the connecting device 100 and the acetabular file 200 can be quickly connected and detached.
Referring to fig. 3, the mounting member 120 and the drive shaft 110 are nested on the basis of the above-described embodiment.
It is possible that the mounting member 120 is sleeved outside the transmission shaft 110 or sleeved inside the transmission shaft 110.
In the embodiment of the present application, the installation member 120 is sleeved in the transmission shaft 110, so that the installation member 120 is built in the transmission shaft 110, and the radial size of the structure can be reduced.
Illustratively, to achieve a nested arrangement, the drive shaft 110 has an interior cavity extending therethrough for receiving one end of the mount 120 and allowing the mount 120 to move axially of the drive shaft 110 within the interior cavity.
When in use, the mounting piece 120 and the transmission shaft 110 are nested, so that the transmission shaft 110 guides the mounting piece 120 in the moving process of the mounting piece 120, thereby being beneficial to ensuring the reliability of the moving of the mounting piece 120.
On the basis of the above embodiment, the mounting member 120 is specifically configured to be movable from the first position to the second position against a preset resistance, i.e., the mounting member 120 needs to be movable from the first position to the second position against the resistance.
In the use process, the mounting piece 120 can move from the first position to the second position only by overcoming the resistance, so that the mounting piece 120 cannot move to the second position at will in the working process, and the falling-off of the mounting piece 120 in the operation process can be avoided, and the operation is prevented from being influenced.
It is possible to have a damping structure between the drive shaft 110 and the mount 120 that allows the mount 120 to be moved from the first position to the second position against the resistance of the damping structure.
Referring to fig. 3, the connection device 100 further includes an elastic member 130, as an example. The elastic member 130 is disposed between the driving shaft 110 and the mounting member 120, and the elastic member 130 is configured to contract/stretch when the mounting member 120 moves from the first position to the second position, so as to apply a preset resistance to the mounting member 120.
When specifically provided, the elastic member 130 may be disposed in a cavity between the mounting member 120 and the transmission shaft 110, that is, the elastic member 130 is disposed inside the transmission shaft 110, which may reduce the radial dimension of the structure.
In addition to preventing the mount 120 from moving to the second position during the operation, the elastic member 130 may accumulate elastic potential energy when the mount 120 moves from the first position to the second position, so that the mount 120 can move to the first position under the action of the elastic potential energy, thereby realizing the restoration of the mount 120.
It is possible that the elastic member 130 is a spring. For example, the elastic member 130 is a compression spring, or an extension spring, or the like.
In an embodiment of the present application, the elastic member 130 is a compression spring, which is sleeved outside the mounting member 120, for contracting when the mounting member 120 moves from the first position to the second position.
In order to be able to compress the elastic member 130, the transmission shaft 110 and the mounting member 120 are provided with a pressing structure for pressing the elastic member 130. The extrusion structure may be the structure of the transmission shaft 110 and the mounting member 120, or may be a separate member provided on the transmission shaft 110 and the mounting member 120.
Referring to fig. 3 and 4 together, the exemplary connection device 100 may further include a shoe 140 and a gland 150. The shoe 140 is disposed on the drive shaft 110. The gland 150 is disposed on the mount 120. Wherein, the collet 140 and the gland 150 are disposed at intervals along the axial direction of the transmission shaft 110, and an elastic member 130 is disposed between the collet 140 and the gland 150, and when the mounting member 120 moves from the first position to the second position, the collet 140 and the gland 150 are close to each other, so that the elastic member 130 is contracted.
On the basis of the above embodiment, the shoe 140 is disposed on the mounting member 120 and slidably engaged with the mounting member 120, and the shoe 140 is detachably connected to the transmission shaft 110.
In use, since the shoe 140 is disposed on the mounting member 120 and the shoe 140 is detachably connected to the drive shaft 110, this enables the shoe 140 to form a combined member with the gland 150, the elastic member 130, and the mounting member 120, as shown in fig. 5, so that the shoe 140 can be detached together when the mounting member 120 is detached.
In the embodiment of the present application, the shoe 140 is in an annular structure, and the shoe 140 is sleeved on the mounting member 120 and can move along the axial direction of the mounting member 120.
In the embodiment of the present application, the shoe 140 is provided with a first limiting portion, the transmission shaft 110 is provided with a second limiting portion, and the first limiting portion and the second limiting portion are configured to have a locked state and an unlocked state in different positional relationships, wherein the shoe 140 is prevented from moving along the extending direction of the extending portion 111 in the locked state, and the shoe 140 is allowed to move along the extending direction of the extending portion 111 in the unlocked state.
Referring to fig. 1, 3 and 4, the first limiting portion is an ear hanger 141, and the second limiting portion is an ear hanger slot 112. When the hanging lugs 141 are clamped into the hanging lug clamping grooves 112, the hanging lugs 141 are limited by the hanging lug clamping grooves 112 and cannot move along the extending direction of the extending portion 111, so that the mounting piece 120 drives the pressing cover 150 to be close to the bottom support 140 when moving along the extending direction of the extending portion 111, and compression of the elastic piece 130 is achieved.
In order to facilitate the clamping of the hanging lugs 141 into the hanging lug clamping grooves 112, the inner wall of the transmission shaft 110 is provided with sliding grooves 113, and the sliding grooves 113 are communicated with the hanging lug clamping grooves 112. When assembled, the chute 113 may allow the hanger 141 to move along the chute 113 to the hanger catch 112, thereby causing the hanger 141 to catch into the hanger catch 112. It should be appreciated that after the lugs 141 are engaged in the lug engaging grooves 112, the shoe 140 should also be rotated circumferentially relative to the drive shaft 110 to misalign the slide slots 113.
In an alternative embodiment, the lugs 141 are resilient and the lugs 141 can be retracted during assembly to enable them to snap into the lug detents 112.
Referring to fig. 1, on the basis of the above embodiment, the opening of the connecting rod clamping groove 121 has a clamping surface 122, and the clamping surface 122 has a predetermined angle with the extending direction of the extending portion 111, that is, the clamping surface 122 is an inclined surface inclined from the opening of the connecting rod clamping groove 121 to the extending direction of the extending portion 111.
In use, when the connecting rod 210 is in contact with the clamping surface 122, the connecting rod 210 can press the clamping surface 122 when the acetabular file 200 is rotated, so that the mounting member 120 moves to the second position in the extending direction of the extending portion 111, and simultaneously the connecting rod 210 can be twisted into the connecting rod clamping groove 121, thereby realizing one-hand mounting of the acetabular file 200.
The predetermined angle between the engagement surface 122 and the extending direction of the extending portion 111 may be 30 °, 45 °, 60 °, or the like. The embodiment of the present application is not particularly limited in this regard.
In another alternative embodiment, the clamping surface 122 may also be a cambered surface.
In the above-mentioned solution, since the mounting member 120 can move along the axial direction of the transmission shaft 110, the connecting rod clamping groove 121 and the extension 111 have different position matching relationship, so that the connection device 100 can be connected with the acetabular file 200 or the connection device 100 can be disconnected with the acetabular file 200. In addition, since the direction in which the mounting member 120 moves from the first position to the second position is consistent with the extending direction of the extending portion 111, pulling the connecting rod 210 along the extending direction of the extending portion 111 can enable the mounting member 120 to reach the second position, and the action of pulling the connecting rod 210 and the action of releasing the connecting rod 210 from the connecting rod clamping groove 121 can be completed by operating the acetabular file 200 with one hand, the connection relationship between the connecting device 100 and the acetabular file 200 can be released by operating the acetabular file 200 with one hand, and thus the quick connection and detachment of the connecting device 100 and the acetabular file 200 can be realized.
Referring to fig. 2 and 6 together, the embodiment of the present application further provides an acetabular file surgical assembly, which includes an acetabular file connecting rod 300, an acetabular file 200 and a connecting mechanism, wherein one end of the acetabular file connecting rod 300 is connected with the acetabular file 200 through the connecting mechanism, and the connecting mechanism is the connecting device 100.
In the above-mentioned solution, since the mounting member 120 can move along the axial direction of the transmission shaft 110, the connecting rod clamping groove 121 and the extension 111 have different position matching relationship, so that the connection device 100 can be connected with the acetabular file 200 or the connection device 100 can be disconnected with the acetabular file 200. In addition, since the direction in which the mounting member 120 moves from the first position to the second position is consistent with the extending direction of the extending portion 111, pulling the connecting rod 210 along the extending direction of the extending portion 111 can enable the mounting member 120 to reach the second position, and the action of pulling the connecting rod 210 and the action of releasing the connecting rod 210 from the connecting rod clamping groove 121 can be completed by operating the acetabular file 200 with one hand, the connection relationship between the connecting device 100 and the acetabular file 200 can be released by operating the acetabular file 200 with one hand, and thus the quick connection and detachment of the connecting device 100 and the acetabular file 200 can be realized.
The present disclosure is intended to embrace all such alternatives, modifications and variances which fall within the broad scope of the appended claims. It is therefore contemplated to cover any such omissions, modifications, equivalents, improvements or similar fall within the spirit and scope of the one or more embodiments of the application.
The foregoing is merely illustrative embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think about variations or substitutions within the technical scope of the present application, and the application should be covered. Therefore, the protection scope of the application is subject to the protection scope of the claims.
Claims (10)
1. A connection device for connecting an acetabular file to an acetabular file connecting rod, the acetabular file including a connecting rod for receiving torque, the connection device comprising:
A drive shaft having an extension at one end for transmitting torque to the connecting rod when the drive shaft is rotated circumferentially to rotate the acetabular file;
The installation piece is arranged on the transmission shaft, the installation piece is provided with a connecting rod clamping groove used for clamping the connecting rod, the installation piece is configured to move along the axial direction of the transmission shaft and is provided with a first position and a second position relative to the extension part, the extension part can prevent the connecting rod from falling out of the clamping groove in the first position, the extension part allows the connecting rod to fall out of the clamping groove in the second position, and the moving direction of the installation piece from the first position to the second position is consistent with the extending direction of the extension part.
2. The connection device of claim 1, wherein the mounting is specifically configured to move from the first position to the second position against a predetermined resistance.
3. The connection device according to claim 2, further comprising:
And an elastic member disposed between the driving shaft and the mounting member, the elastic member being configured to contract/stretch when the mounting member moves from the first position to the second position so as to apply the preset resistance to the mounting member.
4. A connection device according to claim 3, wherein the resilient member is a spring.
5. A connection device according to claim 3, wherein the connection device further comprises:
The bottom support is arranged on the transmission shaft;
a gland disposed on the mounting member;
The mounting piece moves from the first position to the second position, and the collet and the gland are mutually close to each other so as to enable the elastic piece to shrink.
6. The connection device of claim 5, wherein the shoe is disposed on and in sliding engagement with the mounting member and the shoe is removably connected to the drive shaft.
7. The connection device of claim 6, wherein the shoe is provided with a first stop portion and the drive shaft is provided with a second stop portion, the first and second stop portions being configured to have a locked state in which the shoe is prevented from moving in the direction of extension of the extension and an unlocked state in which the shoe is permitted to move in the direction of extension of the extension in different positional relationships.
8. A connection device as claimed in claim 3 wherein one end of the mounting member is nested with the drive shaft, a cavity is provided between the mounting member and the drive shaft, and the resilient member is disposed within the cavity.
9. The connecting device according to claim 1, wherein the connecting rod clamping groove opening is provided with a clamping surface, and the clamping surface and the extending direction of the extending part have a preset angle.
10. An acetabular file surgical assembly comprising an acetabular file connecting rod, an acetabular file and a connecting mechanism, wherein one end of the acetabular file connecting rod is connected with the acetabular file by the connecting mechanism, wherein the connecting mechanism is a connecting device according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322252784.4U CN221205568U (en) | 2023-08-21 | 2023-08-21 | Connecting device and acetabular file operation assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322252784.4U CN221205568U (en) | 2023-08-21 | 2023-08-21 | Connecting device and acetabular file operation assembly |
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| CN221205568U true CN221205568U (en) | 2024-06-25 |
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| CN202322252784.4U Active CN221205568U (en) | 2023-08-21 | 2023-08-21 | Connecting device and acetabular file operation assembly |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117017413A (en) * | 2023-08-21 | 2023-11-10 | 北京和华瑞博医疗科技有限公司 | Connecting device and acetabular file operation assembly |
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2023
- 2023-08-21 CN CN202322252784.4U patent/CN221205568U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117017413A (en) * | 2023-08-21 | 2023-11-10 | 北京和华瑞博医疗科技有限公司 | Connecting device and acetabular file operation assembly |
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