Acetabular cup holder

Abstract

The invention belongs to the field of acetabular surgical instruments, and discloses an acetabular cup holder which comprises an operating rod, a grab handle fixedly connected to the first end of the operating rod, a sleeve hinged to the inner wall of the operating rod and a cup containing assembly arranged in the operating rod. The operating rod is provided with a locking piece located in the operating rod and a trigger assembly driving the locking piece to swing in a reciprocating mode in the radial direction of the operating rod, the trigger assembly is hinged to the operating rod, one end of the locking piece is hinged to the trigger assembly, and the other opposite end of the locking piece is matched with the side face of the cup containing assembly in a pluggable mode to form a first state or a second state. A first clamping part is arranged on the locking piece, a second clamping part is arranged on the inner wall of the operating rod, and the second clamping part and the first clamping part are in sliding fit in the axial direction of the operating rod to form a first sliding position and a second sliding position. And the cup loading assembly can be locked and mounted on the holder for repeated use.

Description

Technical Field

[0001] The present invention relates to the field of acetabular cup surgical instruments, and particularly to an acetabular cup holder. Background Art

[0002] Hip joint surgery involves fixing artificial prostheses, including the femoral part and the acetabular part, to normal bone using bone cement and screws to replace the diseased joint and reconstruct the normal function of the patient's hip joint. It is a relatively mature and reliable treatment method.

[0003] During the operation, when the femur is separated from the acetabular fossa and the acetabular fossa is polished with an acetabular rasp, it is necessary to fix the acetabular cup in the acetabular reamer. During the period of fixing the acetabular cup in the acetabular fossa, the acetabular cup needs to be fixed on the holder, and the acetabular cup is pressed tightly in the acetabular fossa through the holder. After the acetabular cup is fixed, the holder and the acetabular cup are separated, and the acetabular cup is installed in the acetabular fossa, while the holder is withdrawn outside the body.

[0004] Currently, most holders are detachably connected to the acetabular cup through a cup-loading assembly. Specifically, the cup-loading assembly includes a rotation shaft built inside the holder, and the outer end of the rotation shaft extends to the outside of the holder. The rotation shaft is used to install or disassemble the acetabular cup through its outer end in a forward and reverse rotation manner. Since the rotation shaft and other cup-loading components need to rotate relative to the holder, there are clearance fits between the housing of the holder and the relevant cup-loading components. Each time it is used, the body fluid and blood in the acetabular joint penetrate into the inside of the holder through the clearance fits. Moreover, the rotation shaft and other cup-loading components are not detachable, making it difficult to clean the inside of the holder, increasing the difficulty and cost of cleaning the holder, and prone to potential hygienic and safety hazards. Summary of the Invention

[0005] The purpose of the present invention is to provide an acetabular cup holder, which enables the cup-loading assembly inside the holder to be detachably separated from the holder, facilitating the cleaning of the inner cavity of the holder and related components, and can also be locked and installed on the holder for repeated use.

[0006] The technical solution provided by the present invention is: an acetabular cup holder, including an operating rod with a hollow structure and a handle fixedly connected to the first end of the operating rod. An inner cup-loading assembly and a sleeve hinged on the inner wall of the operating rod are provided inside the operating rod. The included angle between both ends of the cup-loading assembly is set to be an obtuse angle. One end of the cup-loading assembly penetrates and extends to the outside of the end face of the second end of the operating rod for connecting the acetabular cup. The relatively other end of the cup-loading assembly is sleeved on the sleeve. The cup-loading assembly can move relative to the end face of the second end of the operating rod and the inner circumferential surface of the sleeve along its axial and circumferential directions. A first avoidance hole is formed on the operating rod and is directly opposite to the upper end of the sleeve.

[0007] The operating rod is provided with a locking member inside it and a trigger assembly for driving the locking member to swing reciprocally in the radial direction of the operating rod. The trigger assembly is hinged on the operating rod. One end of the locking member is hinged on the trigger assembly, and the opposite end of the locking member is in pluggable cooperation with the side surface of the cup-loading assembly to form a first state or a second state. The locking member is provided with a first clamping portion, and the inner wall of the operating rod is provided with a second clamping portion. The second clamping portion and the first clamping portion are in sliding cooperation along the axial direction of the operating rod to form a first sliding position and a second sliding position. An installation and removal hole is formed in the operating rod, and the installation and removal hole is arranged on the side of the sleeve away from the first avoidance hole.

[0008] In the first state, when the second clamping portion is located inside the first clamping portion and slides to the first sliding position, the locking member drives the lower end of the sleeve to abut against the locking member to form a self-locking state.

[0009] When the second clamping portion slides to the second sliding position and separates from the first clamping portion, it reaches the second state, and the locking member swings from the installation and removal hole to the outside of the operating rod to form a disassembly state.

[0010] Preferably, a side plate is provided on one side of the locking member adjacent to the second clamping portion. The first clamping portion is an L-shaped groove formed on the side plate. The first end of the L-shaped groove extends along the axial direction of the operating rod towards the second end of the operating rod, and the second end of the L-shaped groove penetrates through the top of the side plate. The L-shaped groove penetrates through the opposite side surfaces of the side plate.

[0011] When the second clamping portion slides to the first sliding position, the second clamping portion abuts against the inner wall of the first end of the L-shaped groove.

[0012] When the second clamping portion slides to the second sliding position, the second clamping portion faces the second end of the L-shaped groove.

[0013] Preferably, a first acting portion is formed on the cup-loading assembly, and a second acting portion is provided at one end of the locking member away from the trigger assembly.

[0014] In the first state, the second acting portion is inserted into the first acting portion. When the second clamping portion moves to the first sliding position, the second acting portion abuts against the inner wall of the first acting portion adjacent to the handle.

[0015] In the second state, the second acting portion is separated from the first acting portion.

[0016] Preferably, the first acting portion is an annular groove formed by surrounding and opening along the axial direction of the cup-loading assembly, and the second acting portion is a hook bent towards the cup-loading assembly.

[0017] Preferably, a bayonet is provided on one side of the folding hook adjacent to the cup loading assembly. In the first state, the central axis of the annular groove is clamped in the bayonet.

[0018] Preferably, a second avoidance hole is provided on the operating rod on the same side as the first avoidance hole. The trigger assembly includes a trigger that can swing back and forth in the second avoidance hole. The trigger is provided with a first hinge point hinged to the operating rod. One end of the locking member away from the trigger assembly is rotatably provided on the trigger and can swing around the first hinge point.

[0019] Preferably, the trigger assembly further includes a connecting rod. The trigger is provided with a second hinge point spaced from the first hinge point. One end of the connecting rod is hinged to the second hinge point, and the locking member is hinged to the opposite end of the connecting rod.

[0020] Preferably, a concave cavity is provided on one side of the trigger adjacent to the operating rod. The side of the concave cavity adjacent to the second avoidance hole and the side adjacent to the loading and unloading hole are both open, and the second hinge point is provided in the concave cavity.

[0021] Preferably, the cup loading assembly includes a connecting rod for detachably connecting with the acetabular cup, an adjusting rod for being twisted by a screwdriver, and a universal joint provided between the connecting rod and the adjusting rod; the connecting rod, the universal joint and the adjusting rod are all provided in the operating rod, and the universal joint is fixedly connected to the connecting rod and the adjusting rod respectively;

[0022] The adjusting rod is sleeved in the sleeve and is arranged at an obtuse angle with the connecting rod; the adjusting rod is slidably matched with the sleeve along its axial direction and is rotatably matched with the sleeve along its circumferential direction;

[0023] The connecting rod penetrates and extends to the outside of the end face of the second end of the operating rod. The connecting rod is slidably matched with the end face of the second end of the operating rod along its axial direction and is rotatably matched with the end face of the second end of the operating rod along its circumferential direction;

[0024] The locking member is detachably connected to the side surface of the connecting rod.

[0025] Preferably, one end of the connecting rod away from the universal joint is a threaded portion. The end face of the second end of the operating rod is provided with a convex platform for being embedded in the acetabular cup. The threaded end penetrates the convex platform for detachably connecting with the acetabular cup, and the side surface of the convex platform is provided with an edge.

[0026] After the present invention adopts the above technical solutions, the beneficial effects thereof are:

[0027] In this solution, the lower end of the sleeve is pressed tightly against the locking member through the cooperation of the locking member and the cup mounting assembly. The second clamping portion in the operating rod exerts a force on the first clamping portion on the locking member to form a mutual balance of forces, so that the gripper enters the self-locking state and the installation of the gripper is completed. On the contrary, the second clamping portion disengages from the first clamping portion, the force applied to the first clamping portion is withdrawn, the locking member is separated from the cup mounting assembly at the same time, the force applied to the cup mounting assembly is withdrawn, and the path of the force transmitted to the lower end of the sleeve is interrupted. The locking member also swings from the loading and unloading hole to the outside of the operating rod, and the sleeve and the locking member are no longer pressed tightly against each other. The locking gripper is in the disassembled state. After the gripper is in the disassembled state, the cup mounting assembly can be removed for cleaning, and at the same time, the inner cavity of the control rod can also be cleaned. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a schematic structural diagram of the acetabular cup gripper according to Embodiment 1 of the present invention;

[0029] Figure 2 is a cross-sectional view of the acetabular cup gripper according to Embodiment 1 of the present invention;

[0030] Figure 3 is of the present invention Figure 2 partial enlarged view of A;

[0031] Figure 4 is an assembly schematic diagram of the trigger assembly, the locking member and the cup mounting assembly according to Embodiment 1 of the present invention;

[0032] Figure 5 is of the present invention Figure 4 partial enlarged view of B;

[0033] Figure 6 is of the present invention Figure 4 partial enlarged view of C;

[0034] Figure 7 is a schematic structural diagram of the operating rod according to Embodiment 1 of the present invention;

[0035] Figure 8 is a schematic diagram of the effect of the disassembled state of the acetabular cup gripper according to Embodiment 1 of the present invention.

[0036] Reference numerals: 1, handle; 2, operating rod; 3, trigger assembly; 4, sleeve; 5, cup mounting assembly; 6, acetabular cup; 7, locking member;

[0037] 201, third horizontal portion; 202, second bending portion; 203, first horizontal portion; 204, first bending portion; 205, first avoidance hole; 206, second avoidance hole; 207, ball screw; 208, limiting portion; 209, second clamping portion; 210, second horizontal portion; 211, boss; 212, loading and unloading hole;

[0038] 301. Trigger; 302. Connecting rod; 303. Second hinge point; 304. Concave cavity; 305. Guide groove; 306. First hinge point;

[0039] 501. Adjusting rod; 502. Universal joint; 503. Connecting rod; 5031. First acting part; 5032. Threaded end; 701. First clamping part; 702. Folding hook; 703. Bayonet. Detailed implementation mode

[0040] Embodiment 1:

[0041] As Figures 1-8 shown, an acetabular cup holder includes an operating rod 2 with a hollow structure and a handle 1 fixedly connected to the first end of the operating rod 2. A cup loading assembly 5 is arranged inside the operating rod 2, and a sleeve 4 is hinged to the inner wall of the operating rod 2. The included angle between the two ends of the cup loading assembly 5 is set to be an obtuse angle. One end of the cup loading assembly 5 penetrates and extends to the outside of the end face of the second end of the operating rod 2 for connecting an acetabular cup 6. The relatively other end of the cup loading assembly 5 is sleeved on the sleeve 4. The cup loading assembly 5 can move relative to the end face of the second end of the operating rod 2 and the inner peripheral surface of the sleeve 4 along its axial direction and circumferential direction. A first avoidance hole 205 is formed in the operating rod 2 opposite to the upper end of the sleeve 4.

[0042] The operating rod 2 is provided with a locking member 7 inside it and a trigger assembly 3 for driving the locking member 7 to swing reciprocally in the radial direction of the operating rod 2. The trigger assembly 3 is hinged to the operating rod 2. One end of the locking member 7 is hinged to the trigger assembly 3, and the relatively other end of the locking member 7 is in pluggable and detachable cooperation with the side surface of the cup loading assembly 5 to form a first state or a second state; a first clamping part 701 is arranged on the locking member 7, and a second clamping part 209 is arranged on the inner wall of the operating rod 2. The second clamping part 209 and the first clamping part 701 are in sliding cooperation along the axial direction of the operating rod 2 to form a first sliding position and a second sliding position. A loading and unloading hole 212 is formed in the operating rod 2, and the loading and unloading hole 212 is arranged on the side of the sleeve 4 away from the first avoidance hole 205.

[0043] In the first state, when the second clamping part 209 is located inside the first clamping part 701 and slides to the first sliding position, the locking member 7 drives the lower end of the sleeve 4 to tightly press against the locking member 7 to form a self-locking state;

[0044] When the second clamping part 209 slides to the second sliding position and separates from the first clamping part 701, it reaches the second state, and the locking member 7 swings from the loading and unloading hole 212 to the outside of the operating rod 2 to form a disassembly state.

[0045] The implementation effect is that, through the mutual cooperation of the locking member 7 and the cup mounting assembly 5, the lower end of the sleeve 4 is pressed against the locking member 7, and the second clamping portion 209 in the operating rod 2 applies a force to the first clamping portion 701 on the locking member 7 to form a mutual balance of forces, so that the gripper enters the self-locking state and the installation of the gripper is completed. On the contrary, the second clamping portion 209 disengages from the first clamping portion 701, the force applied to the first clamping portion 701 is withdrawn, the locking member 7 is simultaneously separated from the cup mounting assembly 5, the force applied to the cup mounting assembly 5 is withdrawn, the path of the force transmitted to the lower end of the sleeve 4 is interrupted, and the locking member 7 also swings from the loading and unloading hole 212 to the outside of the operating rod 2. The sleeve 4 and the locking member 7 are no longer pressed against each other, and the locking gripper is in the disassembled state. After the gripper is in the disassembled state, the cup mounting assembly 5 can be removed for cleaning, and at the same time, the inner cavity of the control rod can also be cleaned.

[0046] Combined Figure 2 、 Figure 4 and Figure 8 As shown, the specific cooperation mode between the first clamping portion 701 and the second clamping portion 209 is that a side plate is provided on the side of the locking member 7 adjacent to the second clamping portion 209, the first clamping portion 701 is an L-shaped groove opened on the side plate, the first end of the L-shaped groove extends along the axial direction of the operating rod 2 towards the second end of the operating rod 2, and the second end of the L-shaped groove penetrates through the top of the side plate; the L-shaped groove penetrates through the opposite side surfaces of the side plate;

[0047] When the second clamping portion 209 slides to the first sliding position, the second clamping portion 209 abuts against the inner wall of the first end of the L-shaped groove;

[0048] When the second clamping portion 209 slides to the second sliding position, the second clamping portion 209 faces the second end of the L-shaped groove.

[0049] As Figure 5 shown, the cooperation mode between the locking member 7 and the cup mounting assembly 5 is that a first acting portion 5031 is provided on the cup mounting assembly 5, and a second acting portion is provided at one end of the locking member 7 away from the trigger assembly 3;

[0050] In the first state, the second acting portion is inserted into the first acting portion 5031. When the second clamping portion 209 moves to the first sliding position, the second acting portion abuts against the inner wall of the first acting portion 5031 adjacent to the handle 1;

[0051] In the second state, the second acting portion is separated from the first acting portion 5031.

[0052] In this embodiment, the second clamping portion 209 is a protrusion on the inner wall of the operating rod 2, and the protrusion is preferably a cylindrical structure. The structure of the protrusion is not overly limited in this embodiment; among them, the distance between the outer end surface of the protrusion and the inner wall of the corresponding operating rod 2 is greater than the distance between the outer side surface of the side plate and the inner wall of the corresponding operating rod 2.

[0053] In a specific implementation, the first acting portion 5031 is an annular groove axially surrounding the cup loading assembly 5, and the second acting portion is a hook 702 bent toward the cup loading assembly 5.

[0054] Preferably, a bayonet 703 is provided on the side of the hook 702 adjacent to the cup loading assembly 5. In the first state, the central axis of the annular groove is clamped in the bayonet 703.

[0055] When the central axis of the annular groove is clamped in the bayonet 703, the hook 702 is positioned relative to the cup loading assembly 5 along the radial direction of the cup loading assembly 5, and the central axis of the annular groove also plays a role in guiding and limiting the sliding of the hook 702.

[0056] Combined Figure 2 、 Figure 4 、 Figure 6 and Figure 8 As shown in, the specific structure of the trigger assembly 3 is that a second avoidance hole 206 is provided on the operating rod 2 on the same side as the first avoidance hole 205. The trigger assembly 3 includes a trigger 301 that can swing back and forth in the second avoidance hole 206. The trigger 301 is provided with a first hinge point 306 hinged to the operating rod 2. One end of the locking member 7 away from the trigger assembly 3 is rotatably provided on the trigger 301 and can swing around the first hinge point 306.

[0057] Through the transmission connection with the trigger 301, the end of the locking member 7 adjacent to the trigger assembly 3 swings in an eccentric circle on the trigger 301 with the first hinge point 306 as the center, and forms a crank structure with the trigger 301, so that the locking member 7 can swing along the radial direction of the operating rod 2 and also slide axially along the operating rod 2.

[0058] The specific way for the locking member 7 and the trigger 301 to form a crank structure is that the trigger assembly 3 further includes a connecting rod 302. The trigger 301 is provided with a second hinge point 303 spaced from the first hinge point 306. One end of the connecting rod 302 is hinged to the second hinge point 303, and the locking member 7 is hinged to the opposite end of the connecting rod 302.

[0059] Combined Figure 2 and Figure 6 As shown in, for further improvement, a limiting portion 208 is further provided on the inner wall of the operating rod 2. The limiting portion 208 is used to abut against the trigger assembly 3 (specifically the trigger 301), and the limiting portion 208 is provided above the first hinge point 306.

[0060] Another improvement is that ball screws 207 are also symmetrically arranged on the inner wall of the operating rod 2 on opposite sides of the trigger assembly 3 (specifically the trigger 301). The ball screws 207 act on the side surface of the trigger assembly 3 (specifically the side surface of the trigger 301) to limit the trigger 301 in the width direction of the trigger 301.

[0061] Correspondingly, guiding grooves 305 are formed on the side surfaces of opposite sides of the trigger assembly 3 (specifically the side surfaces of the trigger 301). The guiding grooves 305 extend in an arc shape. The ball screws 207 act in the guiding grooves 305, and the ball screws 207 cooperate with the guiding grooves 305 to guide and limit the swinging trajectory of the trigger 301.

[0062] In actual use, there is a transition state between the disassembled state and the self-locking state of the gripper in this solution. In this transition state, with the assistance of a screwdriver, the acetabular cup 6 can be fixed to one end of the cup mounting assembly 5 (this end specifically refers to an end that penetrates to the second end of the operating tube 2). Before the locking member 7 and the cup mounting assembly 5 form the first state, preparatory operations are carried out in advance. Specifically, tools such as a screwdriver are inserted into the opposite end of the cup mounting assembly 5 (this end specifically refers to the end of the cup mounting assembly 5 located in the first relief hole 205, and an adjustment hole for inserting the tip of the screwdriver is provided on this end). The screwdriver drives the cup mounting assembly 5 to rotate around its own axis through the adjustment hole, and the acetabular cup 6 is locked to the cup mounting assembly 5 by a threaded connection. Subsequently, it enters the first state, and the trigger assembly 3 (specifically the trigger 301) is swung, and the connecting rod 503 is pressed against the inside of the operating rod 2 through the locking member 7.

[0063] Among them, the adjustment hole is formed at one end of the adjustment rod 501 away from the universal joint 502. During actual operation, the adjustment rod 501 is driven by the screwdriver and drives the connecting rod 503 to rotate through the universal joint 502, so that the threaded end 5032 on the connecting rod 503 is continuously screwed into the acetabular cup 6 to be locked.

[0064] In a specific application, a concave cavity 304 is formed on one side of the trigger 301 close to the operating rod 2. The side of the concave cavity 304 close to the second relief hole 206 and the side close to the loading and unloading hole 212 are both open, and the second hinge fulcrum 303 is arranged in the concave cavity 304.

[0065] In some embodiments, the limiting portion 208 is arranged on one side of the concave cavity 304 and does not interfere with the movement of the connecting rod 302 in the concave cavity 304.

[0066] Combined with Figure 2 、 Figure 3 and Figure 8As shown, the specific structure of the cup - mounting assembly 5 is that the cup - mounting assembly 5 includes a connecting rod 503 for detachably connecting with the acetabular cup 6, an adjusting rod 501 for being twisted by a screwdriver, and a universal joint 502 provided between the connecting rod 503 and the adjusting rod 501; the connecting rod 503, the universal joint 502, and the adjusting rod 501 are all arranged inside the operating rod 2, and the universal joint 502 is fixedly connected to the connecting rod 503 and the adjusting rod 501 respectively;

[0067] The adjusting rod 501 is sleeved inside the sleeve 4 and is arranged at an obtuse angle with the connecting rod 503; the adjusting rod 501 is in sliding fit with the sleeve 4 along its axial direction and in rotational fit with the sleeve 4 along its circumferential direction;

[0068] The connecting rod 503 penetrates and extends to the outside of the end face of the second end of the operating rod 2, and the connecting rod 503 is in sliding fit with the end face of the second end of the operating rod 2 along its axial direction and in rotational fit with the end face of the second end of the operating rod 2 along its circumferential direction;

[0069] The locking member 7 is plug - and - play connected to the side surface of the connecting rod 503.

[0070] In this embodiment, the first acting portion 5031 of the cup - mounting assembly 5 is arranged on the connecting rod 503, that is, the annular groove is wound around the outer peripheral surface of the connecting rod 503.

[0071] As Figure 7 shown, for further improvement, one end of the connecting rod 503 away from the universal joint 502 is a threaded portion, and a boss 211 for embedding into the acetabular cup 6 is provided on the end face of the second end of the operating rod 2. The threaded end 5032 penetrates the boss 211 for detachably connecting with the acetabular cup 6, and the side surface of the boss 211 is provided with an edge.

[0072] After the boss 211 is embedded into the acetabular cup 6, the side surface of the boss 211 has an edge, so that the acetabular cup 6 and the boss 211 cannot produce relative rotation along the circumferential direction of the acetabular cup 6. Whenever the threaded end 5032 rotates, in a screw - rod transmission manner, it pushes the acetabular cup 6 and the second end of the operating rod 2 away from each other, or pushes the acetabular cup 6 and the second end of the operating rod 2 to approach and press against each other. In specific applications, after the acetabular cup 6 is fixed in the acetabular fossa, a screwdriver is inserted into the sleeve 4 and is clamped with the adjusting rod 501. The screwdriver twists to drive the adjusting rod 501 to rotate. The torque of the adjusting rod 501 drives the connecting rod 503 to rotate through the transmission of the universal joint 502, and the acetabular cup 6 clamped in the boss 211 is pushed out to complete the separation of the acetabular cup 6 from the hand - held device; among them, the boss 211 can adopt structures such as a triangular prism, a quadrangular prism, and their prismatic bodies and frustum - shaped bodies. This embodiment does not limit this too much.

[0073] In some embodiments, the operating rod 2 includes a first horizontal portion 203 and a first bending portion 204 fixedly connected to one end of the first horizontal portion 203. The handle 1 is fixed at the opposite end of the first horizontal portion 203. A first avoidance hole 205 is provided on the first bending portion 204. A loading and unloading hole 212 is opened on the first horizontal portion 203 and extends to the first bending portion 204. The sleeve 4 is hinged within the first bending portion 204 so that the adjusting rod 501 can be hidden within the first bending portion 204. The axis of the sleeve 4 forms a misaligned angle with the axis of the first horizontal portion 203, facilitating the insertion of a screwdriver. The cup loading assembly 5 penetrates through one end of the first bending portion 204 away from the first horizontal portion 203 and extends out of the first bending portion 204.

[0074] In the above embodiment, a second horizontal portion 210 is provided at one end of the first bending portion 204 away from the first horizontal portion 203. The second horizontal portion 210 is arranged parallel to the first horizontal portion 203. By observing the state and movement trajectory of the first horizontal portion 203, the state and movement trajectory of the second horizontal portion 210 and the acetabular cup 6 fixed at the second horizontal portion 210 can be known, which is convenient for operation and improves the control degree.

[0075] The second horizontal portion 210, the first bending portion 204 and the first horizontal portion 203 form a Z-shaped structure and jointly form two inflection points between the second horizontal portion 210 and the first bending portion 204, and between the first bending portion 204 and the first horizontal portion 203, which play a role in restricting the structural form, sliding trajectory and path of the cup loading assembly 5.

[0076] In the above embodiment, a second bending portion 202 is provided at one end of the first horizontal portion 203 adjacent to the handle 1. The second bending portion 202 is symmetrically arranged with the first bending portion 204. A second avoidance hole 206 is provided on the second bending portion 202. The loading and unloading hole 212 extends to the second bending portion 202. The trigger assembly 3 is hinged within the second bending portion 202. Additionally, similar to the second horizontal portion 210, a third horizontal portion 201 is provided at one end of the second bending portion 202 adjacent to the handle 1. The third horizontal portion 201 is parallel to the first horizontal portion 203, and the handle 1 is fixedly connected to the third horizontal portion 201.

[0077] The specific operation process of this technical solution is as follows: Combining Figure 2 and Figure 8As shown, one end of the locking member 7 away from the trigger assembly 3 passes through the loading and unloading hole 212 from the outside of the operating rod 2 and enters the operating rod 2, and is inserted on the side of the cup loading assembly 5. The locking member 7 enters the first state. At this time, the second latching portion 209 on the inner wall of the handle also enters the first latching portion 701. The trigger assembly 3 drives the locking member 7 to move along the axial direction of the operating rod 2 towards the grip 1. The first latching portion 701 on the locking member 7 moves synchronously. The relative sliding between the first latching portion 701 and the second latching portion 209 means that the second latching portion 209 slides relative to the first latching portion 701. When the second latching portion 209 slides to the first sliding position, the second latching portion 209 generates a force on the locking member towards the second end of the operating rod 2. During the sliding of the locking portion, the cup loading assembly 5 as a whole is driven to move towards the grip 1 side. The cup loading assembly 5 pushes the lower end of the sleeve 4 to swing towards the grip 1 side until it abuts against the locking member 7. The locking member 7 generates a force on the cup loading assembly 5 towards the grip 1 side and also generates a force towards the second end of the operating rod 2. The above three forces are balanced with each other, and the handle reaches the self-locking state; conversely, driving the locking member 7 to slide reversely, the second latching portion 209 slides relative to the first latching position. When the second latching portion 209 slides to the second sliding position, the mutual acting forces between the sleeve 4 and the locking member 7, and between the first latching portion 701 and the second latching portion 209 (i.e., the locking member 7 and the operating rod 2) disappear. When the second latching portion 209 disengages from the first latching portion 701 by gravity or external force, the end of the locking member away from the trigger assembly 3 disengages from the cup loading assembly 5 at the same time. The locking member 7 enters the second state. The locking member 7 in the second state swings from the loading and unloading hole 212 to the outside of the operating rod 2 by gravity or external force, specifically as Figure 8 shown. The handle is in the disassembled state. Since the cup loading assembly 5 is not fixedly connected to the sleeve 4 and the operating rod 2, the cup loading assembly 5 can be removed for cleaning after the handle is in the disassembled state, and the inner cavity of the control rod can also be cleaned.

[0078] The above embodiments are the preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principle of the present invention shall be equivalent replacement methods and are all included in the protection scope of the present invention.

Claims

1. Acetabular cup holder, comprising an operating rod with a hollow structure and a handle fixedly connected to the first end of the operating rod. An acetabular cup assembly and a sleeve hinged to the inner wall of the operating rod are provided inside the operating rod. The included angle between the two ends of the acetabular cup assembly is set to be an obtuse angle. One end of the acetabular cup assembly penetrates and extends to the outside of the end face of the second end of the operating rod for connecting an acetabular cup. The opposite end of the acetabular cup assembly is sleeved on the sleeve. The acetabular cup assembly can move relative to the end face of the second end of the operating rod and the inner circumferential surface of the sleeve along its axial and circumferential directions. A first avoidance hole is formed in the operating rod opposite to the upper end of the sleeve. It is characterized in that, a locking member is provided inside the operating rod, and a trigger assembly for driving the locking member to swing reciprocally along the radial direction of the operating rod. The trigger assembly is hinged to the operating rod. One end of the locking member is hinged to the trigger assembly. The opposite end of the locking member is in pluggable cooperation with the side surface of the acetabular cup assembly to form a first state or a second state; a first clamping portion is provided on the locking member, and a second clamping portion is provided on the inner wall of the operating rod. The second clamping portion and the first clamping portion are in sliding cooperation along the axial direction of the operating rod to form a first sliding position and a second sliding position. An installation and removal hole is formed in the operating rod, and the installation and removal hole is arranged on the side of the sleeve away from the first avoidance hole. In the first state, when the second clamping portion is located inside the first clamping portion and slides to the first sliding position, the locking member drives the lower end of the sleeve to abut against the locking member to form a self-locking state. When the second clamping portion slides to the second sliding position and separates from the first clamping portion, it reaches the second state, and the locking member swings from the installation and removal hole to the outside of the operating rod to form a disassembly state.

2. The acetabular cup holder according to claim 1, wherein A side plate is provided on the side of the locking member adjacent to the second clamping portion. The first clamping portion is an L-shaped groove formed on the side plate. The first end of the L-shaped groove extends along the axial direction of the operating rod towards the second end of the operating rod, and the second end of the L-shaped groove penetrates the top of the side plate; the L-shaped groove penetrates the opposite side surfaces of the side plate. When the second clamping portion slides to the first sliding position, the second clamping portion abuts against the inner wall of the first end of the L-shaped groove. When the second clamping portion slides to the second sliding position, the second clamping portion is aligned with the second end of the L-shaped groove.

3. The acetabular cup holder according to claim 1, characterized in that, A first acting portion is formed on the acetabular cup assembly, and a second acting portion is provided at the end of the locking member away from the trigger assembly. In the first state, the second acting portion is inserted into the first acting portion. When the second clamping portion moves to the first sliding position, the second acting portion abuts against the inner wall of the first acting portion adjacent to the handle. In the second state, the second acting portion is separated from the first acting portion.

4. The acetabular cup holder according to claim 3, wherein, The first acting portion is an annular groove formed by surrounding along the axial direction of the acetabular cup assembly, and the second acting portion is a hook bent towards the acetabular cup assembly.

5. The acetabular cup holder according to claim 4, wherein, A bayonet opening is provided on one side of the folding hook adjacent to the cup mounting assembly. In the first state, the central axis of the annular groove is clamped in the bayonet opening.

6. The acetabular cup holder according to any one of claims 1-5, characterized in that, A second avoidance hole is provided on the operating rod on the same side as the first avoidance hole. The trigger assembly includes a trigger that can swing reciprocally in the second avoidance hole. The trigger is provided with a first hinge point hinged to the operating rod. One end of the locking member away from the trigger assembly is rotatably provided on the trigger and can swing around the first hinge point.

7. The acetabular cup holder according to claim 6, characterized in that, The trigger assembly further includes a connecting rod. The trigger is provided with a second hinge point spaced from the first hinge point. One end of the connecting rod is hinged to the second hinge point, and the locking member is hinged to the opposite end of the connecting rod.

8. The acetabular cup holder according to claim 7, characterized in that, A concave cavity is provided on one side of the trigger adjacent to the operating rod. The side of the concave cavity adjacent to the second avoidance hole and the side adjacent to the loading and unloading hole are both open. The second hinge point is provided in the concave cavity.

9. The acetabular cup holder according to any one of claims 1-5, characterized in that, The cup mounting assembly includes a connecting rod for detachably connecting to the acetabular cup, an adjusting rod for being twisted by a screwdriver, and a universal joint provided between the connecting rod and the adjusting rod; the connecting rod, the universal joint and the adjusting rod are all provided in the operating rod, and the universal joint is fixedly connected to the connecting rod and the adjusting rod respectively; The adjusting rod is sleeved in the sleeve and is arranged at an obtuse angle to the connecting rod; the adjusting rod is slidably matched with the sleeve along its axial direction and is rotatably matched with the sleeve along its circumferential direction; The connecting rod penetrates and extends to the outside of the end face of the second end of the operating rod. The connecting rod is slidably matched with the end face of the second end of the operating rod along its axial direction and is rotatably matched with the end face of the second end of the operating rod along its circumferential direction; The locking member is detachably connected to the side surface of the connecting rod.

10. The acetabular cup holder according to claim 9, characterized in that, One end of the connecting rod away from the universal joint is a threaded portion. A convex platform for being embedded in the acetabular cup is provided on the end face of the second end of the operating rod. The threaded end penetrates through the convex platform for detachably connecting to the acetabular cup. An edge is provided on the side surface of the convex platform.

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