Acetabular liner operation device and method of using the acetabular liner operation device

Abstract

The present invention provides an acetabular liner operating device and a method for using the acetabular liner operating device. The acetabular liner operating device includes an operating rod, a suction cup assembly, and a limit assembly. The suction cup assembly provided at the first end of the operating rod is used to adsorb the inner wall of the acetabular liner, and the limit assembly is used to limit the freedom of the acetabular liner toward the second end of the operating rod. With such a configuration, the inner wall of the acetabular liner is adsorbed by the suction cup assembly, which will not cause scratches or damage to the inner wall of the acetabular liner. The setting of the limit assembly limits the freedom of the acetabular liner toward the second end, thereby avoiding the problem that the acetabular liner is easy to shake and difficult to position when the suction cup assembly is used to adsorb the acetabular liner. In this way, the acetabular liner can be conveniently and reliably adsorbed and operated by using tools, which can help surgical personnel to accurately and quickly install the acetabular liner during surgery, shorten the operation time, and reduce the risk of damage to the surface of the acetabular liner.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to an acetabular liner operating device and a method for using the acetabular liner operating device. Background Art

[0002] At present, in total hip surgery, the placement of the acetabular liner is usually done by hand, which is inconvenient and easy to damage the acetabular liner. Secondly, it is difficult to control the direction of the acetabular liner. When the acetabular liner is driven into the acetabular cup, it is easy to tilt and install it improperly. Due to the special shape of the acetabular liner, it is difficult to adsorb and operate it. If the inner side of the acetabular liner is expanded by a distraction tool and adsorbed, it is easy to wear the inner side of the acetabular liner, and the operation is also cumbersome. Summary of the invention

[0003] The object of the present invention is to provide an acetabular liner operating device and a method for using the acetabular liner operating device to solve the problem that the existing acetabular liner is difficult to adsorb and operate.

[0004] In order to solve the above technical problems, the present invention provides an acetabular liner operating device, which comprises:

[0005] An operating rod having a first end and a second end opposite to each other in the axial direction;

[0006] A suction cup assembly is arranged at the first end of the operating rod and is used to absorb the inner wall of the acetabulum liner; and a limiting assembly is movably arranged along the axial direction of the operating rod and is used to at least limit the freedom of the acetabulum liner toward the second end.

[0007] Optionally, in the acetabular liner operating device, the limiting assembly includes a limiting plate or a plurality of limiting claws, and the limiting plate or the plurality of limiting claws are used to abut against the end surface of the acetabular liner to at least limit the freedom of the acetabular liner toward the second end direction.

[0008] Optionally, in the acetabular liner operating device, the limiting assembly includes three limiting claws, and the three limiting claws are evenly distributed along the circumference of the operating rod.

[0009] Optionally, in the acetabular liner operating device, the limiting assembly further includes a pressure rod unit, the pressure rod unit includes a pawl, the operating rod includes a ratchet, and the pawl cooperates with the ratchet to limit the movement of the limiting assembly toward the second end.

[0010] Optionally, in the acetabular liner operating device, the pressure rod unit further includes an elastic member connected to the pawl, and under the action of the elastic member, the pawl and the ratchet are in a matched state.

[0011] Optionally, in the acetabular liner operating device, the pressure rod unit further includes a pressure rod connected to the pawl, and the pressure rod is configured to release the pawl from the mating relationship with the ratchet under the action of an external force.

[0012] Optionally, in the acetabular liner operating device, the limiting assembly includes two pressure rod units, and the pawls of the two pressure rod units are relatively arranged on both sides of the operating rod along the radial direction.

[0013] Optionally, in the acetabular liner operating device, the operating rod includes a plurality of ratchets, each of the ratchets is arranged around the circumference of the operating rod, and the plurality of ratchets are evenly distributed along the axial direction of the operating rod.

[0014] Optionally, in the acetabulum liner operating device, the operating rod, the suction cup assembly and the limiting assembly are detachably assembled to each other.

[0015] Optionally, in the acetabular liner operating device, a handle is provided at the second end of the operating rod.

[0016] In order to solve the above technical problems, the present invention also provides a method for using an acetabular liner operating device, which uses the acetabular liner operating device as described above. The method for using the acetabular liner operating device comprises the following steps:

[0017] Step 1: Pushing the operating rod toward the first end to press the suction cup assembly against the inner wall of the acetabular liner, squeezing out the air between the suction cup assembly and the acetabular liner, so that the suction cup assembly and the acetabular liner are adsorbed to each other;

[0018] Step 2: Pushing the limiting assembly toward the first end so that the limiting assembly abuts against the end surface of the acetabulum liner to tighten the gap between the acetabulum liner and the suction cup assembly;

[0019] Step three: After completing the operation on the acetabular liner, move the limiting assembly toward the second end to separate the limiting assembly from the acetabular liner, and then separate the suction cup assembly from the acetabular liner.

[0020] In summary, in the acetabular liner operating device and the method for using the acetabular liner operating device provided by the present invention, the acetabular liner operating device includes an operating rod, a suction cup assembly and a limit assembly. The suction cup assembly provided at the first end of the operating rod is used to adsorb the inner wall of the acetabular liner, and the limit assembly is used to limit the freedom of the acetabular liner toward the second end of the operating rod. With such a configuration, the inner wall of the acetabular liner is adsorbed by the suction cup assembly, which will not cause scratches and damage to the inner wall of the acetabular liner, and the setting of the limit assembly limits the freedom of the acetabular liner toward the second end, avoiding the problem that the acetabular liner is easy to shake and difficult to position when the suction cup assembly is used to adsorb the acetabular liner. Therefore, the acetabular liner operating device provided by the present invention can realize the convenient and reliable adsorption and operation of the acetabular liner using tools, and can help surgical personnel to accurately and quickly install the acetabular liner during surgery, shorten the operation time and reduce the risk of damage to the surface of the acetabular liner. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Those skilled in the art will appreciate that the accompanying drawings are provided for a better understanding of the present invention and do not constitute any limitation on the scope of the present invention.

[0022] Figure 1 is a schematic diagram of an acetabular liner operating device provided by an embodiment of the present invention;

[0023] Figure 2 is a schematic diagram of a limit assembly provided by an embodiment of the present invention;

[0024] Figure 3 is a schematic diagram of an operating lever provided by an embodiment of the present invention;

[0025] Figure 4 is a schematic diagram of a pressure rod unit provided by an embodiment of the present invention;

[0026] Figure 5 It is a schematic diagram of an axial section of an acetabular liner operating device provided by one embodiment of the present invention.

[0027] In the attached figure:

[0028] 1- Suction cup assembly;

[0029] 2-limiting assembly; 2a-limiting claw; 20-pressure rod unit; 2b-pressure rod; 2c-rotating shaft; 2d-ratchet; 2e-elastic member; 21-bracket;

[0030] 3-operating lever; 3a-ratchet; 3b-first end; 3c-second end; 3d-handle;

[0031] 4-Acetabular lining. DETAILED DESCRIPTION

[0032] In order to make the purpose, advantages and features of the present invention clearer, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the drawings are all in a very simplified form and are not drawn to scale, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention. In addition, the structure shown in the drawings is often a part of the actual structure. In particular, the emphasis of each drawing is different, and sometimes different scales are used.

[0033] As used in this specification and the appended claims, the singular forms "a", "an", and "the" include plural referents unless the context clearly indicates otherwise. As used in this specification and the appended claims, the term "or" is generally used in a sense including "and / or", unless the context clearly indicates otherwise, the term "proximal end" is generally the end closer to the operator, and the term "distal end" is generally the end closer to the affected part of the patient.

[0034] The core idea of ​​the present invention is to provide an acetabular liner operating device to solve the problem that the existing acetabular liner is difficult to adsorb and operate. The acetabular liner operating device includes: an operating rod, a suction cup assembly and a limiting assembly. The operating rod has a first end and a second end opposite to each other in the axial direction; the suction cup assembly is arranged at the first end of the operating rod, and is used to adsorb the inner wall of the acetabular liner; the limiting assembly is movably arranged relative to the suction cup assembly along the axial direction of the operating rod, and is at least used to limit the freedom of the acetabular liner toward the second end. In this configuration, the inner wall of the acetabular liner is adsorbed by the suction cup assembly, and scratches and damages will not be caused to the inner wall of the acetabular liner, and the setting of the limiting assembly limits the freedom of the acetabular liner toward the second end, avoiding the problem that the acetabular liner is easy to shake and difficult to position when the suction cup assembly is used to adsorb the acetabular liner. Therefore, the acetabular liner operating device provided by the present invention can realize the convenient and reliable adsorption and operation of the acetabular liner using tools, and at the same time can avoid the wear of the acetabular liner.

[0035] The following description is given with reference to the accompanying drawings.

[0036] Please refer to Figures 1 to 5 ,in, Figure 1 is a schematic diagram of an acetabular liner operating device provided by an embodiment of the present invention, Figure 2 is a schematic diagram of a limit assembly provided in one embodiment of the present invention, Figure 3 is a schematic diagram of an operating lever provided by an embodiment of the present invention, Figure 4 is a schematic diagram of a pressure rod unit provided in one embodiment of the present invention, Figure 5 It is a schematic diagram of an axial section of an acetabular liner operating device provided by one embodiment of the present invention.

[0037] like Figure 1As shown, an embodiment of the present invention provides an acetabular liner operating device, which includes: an operating rod 3, a suction cup assembly 1, and a limiting assembly 2. The operating rod 3 has a first end 3b and a second end 3c opposite to each other in the axial direction; the suction cup assembly 1 is arranged at the first end 3b of the operating rod 3, and is used to absorb the inner wall of the acetabular liner 4; the limiting assembly 2 is movably arranged along the axial direction of the operating rod 3, and is used to at least limit the degree of freedom of the acetabular liner 4 toward the second end 3c.

[0038] In an exemplary embodiment, the suction cup assembly 1 is mainly made of a smooth and soft material, such as medical silicone, which is fixed to the first end 3b of the operating rod 3. Generally, the acetabular liner 4 is hemispherical, and the suction cup assembly 1 has a suction cup, which can be used to adsorb the inner wall of the acetabular liner 4. In actual use, the suction cup is pressed against the inner wall of the acetabular liner 4 to squeeze out the air between the two, and then the suction cup and the acetabular liner 4 are tightly adsorbed by atmospheric pressure. Since the material of the suction cup assembly 1 is soft and smooth, the suction cup assembly 1 will not cause scratches or damage to the inner wall of the acetabular liner 4 when in contact with it. Preferably, the outer diameter of the suction cup is between 5mm-50mm. This size can generate sufficient adsorption force without hindering the surgical operation due to being too large. Those skilled in the art can select a suitable suction cup size according to the specific size of the acetabular liner 4 to adapt to the surgical operation.

[0039] like Figure 2As shown, the limiting assembly 2 includes three limiting claws 2a, which are used to abut against the end face of the acetabular liner 4 to at least limit the degree of freedom of the acetabular liner 4 toward the second end 3c. Since the material of the suction cup assembly 1 is soft, if the suction cup assembly 1 is used alone to absorb and operate the acetabular liner 4, the acetabular liner 4 is prone to shake and swing relative to the operating rod 3, so that it is difficult to fix the position of the acetabular liner 4. In addition, shaking is prone to cause the suction cup to leak, destroying the vacuum adsorption of the suction cup and the acetabular liner 4 and causing the acetabular liner 4 to fall off. Therefore, this embodiment provides the limiting claws 2a to deal with the shaking problem of the acetabular liner 4. Preferably, the three limiting claws 2a are evenly distributed along the circumference of the operating rod 3, and the end faces of the three limiting claws 2a facing the first end 3b are located on the same plane. With such a configuration, when the end face of the acetabular liner 4 contacts the three limiting claws 2a, it can abut against the end faces of the three limiting claws 2a at the same time to obtain stable support. More preferably, the end faces of the three limiting claws 2a facing the first end 3b are arranged perpendicular to the axis of the operating rod 3. Optionally, the limiting claws 2a are made of a relatively hard material, so that the limiting claws 2a limit the freedom of the acetabular liner 4 toward the second end 3c by abutting against the end face of the acetabular liner 4. The limiting assembly 2 is movably arranged on the operating rod 3. When the limiting assembly 2 moves toward the first end 3b, the limiting claws 2a abut against the end face of the acetabular liner 4, thereby limiting the freedom of the acetabular liner 4 toward the second end 3c. Further, the limiting assembly 2 is operated to push the acetabular liner 4 to move slightly toward the first end 3b, slightly tighten the gap between the acetabular liner 4 and the suction cup, increase the vacuum between the acetabular liner 4 and the suction cup, and make the two more tightly adsorbed, thereby further improving the reliability of the acetabular liner operation device to adsorb the acetabular liner 4. With such configuration, the limiting claw 2a cooperates with the suction cup assembly 1 to effectively prevent the acetabular liner 4 from shaking, which may cause the acetabular liner to be difficult to position and fall off due to air leakage. In addition, on the other hand, the end face of the acetabular liner 4 is generally of high strength, and the limiting claw 2a made of hard material mainly contacts the end face of the acetabular liner 4, so it will not cause damage to the fragile inner wall of the acetabular liner 4. Therefore, by using the suction cup assembly 1 and the limiting assembly 2 together, the acetabular liner 4 can be conveniently and reliably adsorbed and operated, and the acetabular liner 4 can be prevented from being worn. Optionally, the diameter of the circumscribed circle of the three limiting claws 2a is between 30mm and 100mm, which is sufficient to resist the end face of the acetabular liner 4 without being too large to hinder the surgical operation; of course, the number of limiting claws 2a is not limited to three, and those skilled in the art can select limiting claws 2a of corresponding sizes and a suitable number of limiting claws 2a according to the actual size of the acetabular liner 4. In some other embodiments, a limiting disk may be used to replace the plurality of limiting claws 2a, and similar effects may be obtained, which will not be described in detail here.

[0040] Please refer to Figure 4 , and combined with Figure 2 , Figure 3 and Figure 5 Preferably, the limit assembly 2 further includes a pressure rod unit 20, the pressure rod unit 20 includes a pawl 2d, and the operating rod 3 includes a ratchet 3a, and the pawl 2d cooperates with the ratchet 3a to limit the movement of the limit assembly 2 toward the second end 3c. In an alternative embodiment, the limit assembly 2 includes a bracket 21 arranged outside the operating rod 3, the limit pawl 2a is arranged at one end of the bracket 21, and the pressure rod unit 20 is arranged at the other end of the bracket 21. Optionally, the limit assembly 2 includes two pressure rod units 20, and the pawls 2d of the two pressure rod units 20 are relatively arranged on both sides of the operating rod 3 in the radial direction. The operating rod 3 includes 5 ratchet teeth 3a, each of which is arranged around the circumference of the operating rod 3, and the 5 ratchet teeth are evenly distributed along the axial direction of the operating rod. Specifically, each ratchet 3a includes an oblique tooth surrounding the operating rod 3, and its oblique surface extends in the direction away from the axis of the operating rod 3 toward the first end 3b, and extends in the direction close to the axis of the operating rod 3 toward the second end 3c, and each ratchet 3a has a limiting surface near the second end 3c, and the limiting surface is arranged in the direction of the first end 3b, which is used to block the pawl 2d. With such a configuration, the pawl 2d can move unidirectionally from the second end 3c of the operating rod 3 to the first end 3b, and the unidirectional movement from the first end 3b of the operating rod 3 to the second end 3c is limited by the limiting surface. Optionally, the pawl 2d is rotatably arranged on the bracket 21 through the rotating shaft 2c to cooperate with the ratchet 3a to form a ratchet system.

[0041] Furthermore, the pressure rod unit 20 further includes an elastic member 2e connected to the ratchet 2d, and the ratchet 2d is configured to initially be in a state of matching with the ratchet 3a under the action of the elastic member 2e. Figure 4 and Figure 5 As shown, the elastic member 2e may be a spring, one end of which is fixed to the pawl 2d and the other end is against the bracket 21. In the absence of external force, the spring initially applies a force to the pawl 2d toward the ratchet 3a, so that the pawl 2d is in a state of matching with the ratchet 3a by default.

[0042] Furthermore, the pressure rod unit 20 also includes a pressure rod 2b connected to the pawl 2d, and the pressure rod 2b is configured to release the matching relationship between the pawl 2d and the ratchet 3a under the action of external force, so as to release the limitation on the displacement of the limit assembly 2. In one example, the pressure rod 2b is arranged on the other side of the pawl 2d relative to the rotating shaft 2c. When the pressure rod 2b is pressed down, the pawl 2d can be driven to tilt up, so that the pawl 2d and the ratchet 3a are released from the matching relationship, and the entire limit assembly 2 can move toward the second end 3c of the operating rod 3. In practice, after the positioning of the acetabular liner 4 is completed, the pressure rod 2b can be pressed to separate the limit assembly 2 from the acetabular liner 4, so that the acetabular liner 4 can be quickly released.

[0043] Preferably, the operating rod 3, the suction cup assembly 1 and the limit assembly 2 are detachably assembled to facilitate cleaning and sterilization after surgery. Preferably, the second end 3c of the operating rod 3 is provided with a handle 3d for the operator to hold.

[0044] Furthermore, in some embodiments, the operating rod 3 has a hollow ventilation cavity, a ventilation valve is provided near the handle 3d, and the suction cup of the suction cup assembly 1 is connected to the ventilation cavity of the operating rod 3. When the acetabular liner operating device is operated to absorb and operate the acetabular liner 4, the ventilation valve is closed; and when the installation of the acetabular liner 4 is completed and the pressure rod 2b is pressed to separate the limit assembly 2 from the acetabular liner 4, the ventilation valve can be opened to connect the inside of the suction cup with the outside atmosphere, so that the suction cup and the acetabular liner 4 can be separated naturally.

[0045] The following describes the method for using the acetabular liner operating device provided in this embodiment:

[0046] Step 1: The operator holds the handle 3d and pushes the operating rod 3 toward the first end 3b, pressing the suction cup of the suction cup assembly 1 against the inner wall of the acetabular liner 4, squeezing out the air between the suction cup assembly 1 and the acetabular liner 4, and making the suction cup of the suction cup assembly 1 and the acetabular liner 4 tightly adsorbed by atmospheric pressure;

[0047] Step 2: Push the limiting assembly 2 toward the direction of the first end 3b so that the three limiting claws 2a of the limiting assembly 2 abut against the end surface of the acetabular liner 4, thereby fixing the position of the acetabular liner 4 and preventing it from shaking; further slightly press the three limiting claws 2a of the limiting assembly 2 toward the end surface of the acetabular liner 4 to slightly tighten the gap between the acetabular liner 4 and the suction cup, increase the vacuum degree between the two, and make the two more tightly adsorbed;

[0048] Step 3: The operator holds the handle 3d and installs the acetabular liner 4 to a predetermined position. During the installation process, the direction can be freely adjusted by the handle 3d without worrying about the acetabular liner 4 shaking or falling off;

[0049] Step 4: After completing the operation on the acetabular liner, press the pressure rod 2b to move the limiting assembly 2 toward the second end 3c to separate the limiting assembly 2 from the acetabular liner 4, and then separate the suction cup assembly 1 from the acetabular liner 4, so that the acetabular liner 4 can be quickly released to complete the entire operation process.

[0050] In summary, in the acetabular liner operating device and the method for using the acetabular liner operating device provided by the present invention, the acetabular liner operating device includes an operating rod, a suction cup assembly and a limit assembly. The suction cup assembly provided at the first end of the operating rod is used to adsorb the inner wall of the acetabular liner, and the limit assembly is used to limit the freedom of the acetabular liner toward the second end of the operating rod. In this configuration, the inner wall of the acetabular liner is adsorbed by the suction cup assembly, which will not cause scratches and damage to the inner wall of the acetabular liner, and the setting of the limit assembly limits the freedom of the acetabular liner toward the second end, avoiding the problem that the acetabular liner is easy to shake and difficult to position when the suction cup assembly is used to adsorb the acetabular liner, and the problem of air leakage and falling off can also be used to appropriately tighten the space between the acetabular liner and the suction cup to improve the vacuum degree. Therefore, the acetabular liner operating device provided by the present invention can realize the convenient and reliable adsorption and operation of the acetabular liner using tools, realize quick connection and quick release, and avoid wear of the acetabular liner. Furthermore, the acetabular liner operating device provided by the present invention has a simple structure and low cost, thus saving surgical costs.

[0051] The above description is only a description of the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention. Any changes or modifications made by a person skilled in the art in the field of the present invention based on the above disclosure shall fall within the scope of protection of the claims.

Claims

1. An acetabular liner operating device, It is characterized in that include: An operating rod having a first end and a second end opposite to each other in the axial direction; A suction cup assembly, disposed at the first end of the operating rod, for adsorbing the inner wall of the acetabulum liner; as well as a limiting assembly, movably arranged along the axial direction of the operating rod, for at least limiting the degree of freedom of the acetabular liner toward the second end; The limiting assembly includes a limiting plate or a plurality of limiting claws, and also includes a pressure rod unit, the pressure rod unit includes a pawl and an elastic member and a pressure rod connected to the pawl, the operating rod includes a plurality of ratchet teeth, the inclined surface of the ratchet teeth extends in a direction away from the axis of the operating rod toward the first end, and extends in a direction close to the axis of the operating rod toward the second end; the ratchet teeth have a limiting surface, and the limiting surface is set in the direction of the first end for blocking the ratchet teeth; the ratchet teeth cooperate with the ratchet teeth to limit the movement of the limiting assembly toward the second end; under the action of the elastic member, the ratchet teeth and the ratchet teeth are in a matched state; A handle is provided at the second end of the operating rod. The operating rod has a hollow ventilation cavity. The handle is provided with a ventilation valve. The suction cup of the suction cup assembly is connected to the ventilation cavity.

2. The acetabular liner operating device according to claim 1, It is characterized in that The limiting plate or the plurality of limiting claws are used to abut against the end surface of the acetabular liner to at least limit the degree of freedom of the acetabular liner toward the second end.

3. The acetabular liner operating device according to claim 2, It is characterized in that The limiting assembly includes three limiting claws, and the three limiting claws are evenly distributed along the circumference of the operating rod.

4. The acetabular liner operation device according to claim 1, It is characterized in that The pressure rod is configured to release the pawl from the matching relationship with the ratchet tooth under the action of external force.

5. The acetabular liner operating device according to claim 1, It is characterized in that The limiting assembly includes two pressure rod units, and the pawls of the two pressure rod units are arranged oppositely on two sides of the operating rod along the radial direction.

6. The acetabular liner operation device according to claim 1 or 5, It is characterized in that Each ratchet is disposed around the circumference of the operating rod, and a plurality of ratchet teeth are evenly distributed along the axial direction of the operating rod.

7. The acetabular liner operation device according to claim 1, It is characterized in that The operating rod, the suction cup assembly and the limiting assembly are detachably assembled with each other.

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