Glenoid cavity beater

Abstract

The utility model belongs to the technical field of medical instruments, and particularly discloses a glenoid cavity beating device. The glenoid cavity beating device comprises an outer pipe assembly, a beating head, a connecting assembly, a driving assembly and a positioning piece, wherein the outer pipe assembly is provided with an inner cavity; the beating head is arranged at the near end of the outer tube assembly, and the inner cavity is communicated to the beating head; the connecting assembly is arranged in the inner cavity and can move in the axial direction relative to the inner cavity. The driving assembly is arranged on the outer tube assembly and connected with the connecting assembly, so that the driving assembly drives the connecting assembly to stretch out towards the near end of the outer tube assembly or retract towards the far end of the outer tube assembly, the connecting assembly can be separated from the first matching part on the prosthesis when stretching out, and the connecting assembly can be connected with the first matching part when retracting; the positioning piece is arranged on the striking head and used for being matched with a second matching part on the prosthesis so as to position the prosthesis. According to the utility model, the prosthesis can be held and taken, and can be conveniently implanted at an expected position and angle, so that the operation efficiency can be improved.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology, specifically relating to a glenoid impactor. Background Technology

[0002] Reverse shoulder arthroplasty is a surgical procedure used to treat complex shoulder joint diseases. It is widely used because it can improve the speed and quality of postoperative recovery, significantly reduce patient pain, maintain stable joint function in the long term, and reduce the occurrence of complications.

[0003] In reverse shoulder arthroplasty, the glenoid percussion device is used to install the artificial glenoid assembly to implant the prosthesis into the bone bed. However, the glenoid percussion device in this technology can usually only strike the prosthesis, but cannot be held and is not convenient for the doctor to implant the prosthesis in the desired position and angle, resulting in a prolonged operation time. Summary of the Invention

[0004] This invention aims to at least partially solve one of the technical problems in related technologies. To this end, embodiments of this invention provide a glenoid percussion device capable of holding a prosthesis and facilitating its implantation at a desired position and angle, thereby improving surgical efficiency.

[0005] The glenoid impactor of this utility model includes an outer tube assembly, an impact head, a connecting assembly, a driving assembly, and a positioning element. The outer tube assembly has an inner cavity. The impact head is disposed at the proximal end of the outer tube assembly, and the inner cavity communicates with the impact head. The connecting assembly is disposed in the inner cavity and is axially movable relative to the inner cavity. The driving assembly is disposed in the outer tube assembly and connected to the connecting assembly, so as to drive the connecting assembly to extend towards the proximal end of the outer tube assembly or retract towards the distal end of the outer tube assembly. When the connecting assembly extends, it can separate from a first mating part on the prosthesis, and when the connecting assembly retracts, it can connect with the first mating part. The positioning element is disposed in the impact head and is used to cooperate with a second mating part on the prosthesis to position the prosthesis.

[0006] Understandably, when implantation is required, the external tube assembly is first moved to position the implant by engaging the positioning element with the second mating part on the implant. Then, the drive assembly extends and rotates the connecting component. As the connecting component retracts under the action of the drive assembly, it connects with the first mating part of the implant, allowing for stable and reliable implant handling. Furthermore, by controlling the position and angle of the external tube assembly, the implant can be moved accurately and quickly to the desired position and angle. Finally, striking the external tube assembly transmits force to the striking head, which applies pressure to the implant, ensuring stable implantation. After implantation, the drive assembly extends the connecting component, allowing it to separate from the first mating part of the implant. Rotating the drive assembly allows the connecting component to separate from the implant, at which point the external tube assembly can be removed, improving surgical efficiency. Furthermore, placing the connecting component within the internal cavity allows for guidance, facilitating stable extension and ensuring accurate engagement between the connecting component and the first mating part of the implant, further enhancing surgical efficiency.

[0007] In this embodiment, the prosthesis is divided into a large-size prosthesis and a small-size prosthesis. The positioning component includes a first positioning part and a second positioning part. The first positioning part is used to cooperate with the second mating part of the large-size prosthesis, and the second positioning part is used to cooperate with the second mating part of the small-size prosthesis.

[0008] In this embodiment, the positioning element includes two positioning posts spaced apart from the striking head, and the second mating part includes two positioning holes corresponding to the positioning posts.

[0009] In this embodiment, the connecting assembly includes a connecting rod and a latch. The connecting rod is disposed in the inner cavity and connected to the driving assembly; the latch is connected to the connecting rod and located at the proximal end of the outer tube assembly.

[0010] In this embodiment, the striking head has a groove on the side opposite to the outer tube assembly, the connecting rod slides through the bottom wall of the groove, and the latch is located on the side of the bottom wall of the groove opposite to the outer tube assembly.

[0011] In this embodiment, the driving assembly includes a first driving member and a second driving member. The first connecting portion of the first driving member is connected to the outer tube assembly, and the second connecting portion of the first driving member is connected to the connecting assembly. The first driving member is used to drive the connecting assembly to extend. The first connecting portion of the second driving member is connected to the outer tube assembly, and the second connecting portion of the second driving member is connected to the connecting assembly. The second driving member is used to cooperate with the first driving member to drive the connecting assembly to retract.

[0012] In this embodiment, the first driving member includes an operating rod. A limiting groove communicating with the inner cavity is provided on the side wall of the outer tube assembly. The operating rod passes through the limiting groove from the outside of the outer tube assembly and is connected to the connecting assembly. The limiting groove has a first groove and a second groove that communicate with each other. The first groove extends axially along the outer tube assembly, and the second groove extends circumferentially along the outer tube assembly. The second groove is located on the side of the first groove near the proximal end of the outer tube assembly. When the operating rod moves into the second groove, the connecting assembly extends out. When the operating rod moves into the first groove, the second driving member drives the connecting assembly to retract.

[0013] In this embodiment, the first driving member further includes a knob, which is disposed outside the outer tube assembly and connected to the operating lever. The knob is axially movable or circumferentially rotated relative to the outer tube assembly.

[0014] In this embodiment, the second driving member includes an elastic member disposed in the inner cavity and on the circumferential exterior of the connecting assembly. The proximal end of the elastic member elastically abuts against a first protrusion inside the inner cavity, and the distal end of the elastic member elastically abuts against a second protrusion on the outer circumferential surface of the connecting assembly.

[0015] In this embodiment, the outer tube assembly includes a first tube segment and a second tube segment connected sequentially from its proximal end to its distal end. The first tube segment and the second tube segment together form the inner cavity, and the first protrusion is formed between the first tube segment and the second tube segment.

[0016] In this embodiment, the striking head is provided with a mark.

[0017] In this embodiment, the glenoid fossa striker further includes a handle assembly disposed at the distal end of the outer tube assembly.

[0018] In this embodiment, the handle assembly includes a handle body and a pad. The handle body is disposed at the distal end of the outer tube assembly. The pad is detachably disposed at the end of the handle body opposite to the outer tube assembly.

[0019] In this embodiment, the handle assembly further includes a connecting shaft. The handle body has a mounting groove at one end away from the outer tube assembly. The connecting shaft is disposed in the mounting groove. The distal end of the outer tube assembly extends into the mounting groove and is connected to the connecting shaft. The pad is connected to the connecting shaft. Attached Figure Description

[0020] Figure 1 This is a first-view perspective perspective view of the articular impactor according to an embodiment of the present invention.

[0021] Figure 2 This is a second-view perspective perspective view of the articular impactor according to an embodiment of the present invention.

[0022] Figure 3 This is a cross-sectional view of the articular impactor according to an embodiment of the present invention.

[0023] Figure 4 This is a structural schematic diagram of the positioning component according to an embodiment of the present utility model.

[0024] Figure label:

[0025] 1. Outer pipe assembly; 11. Inner cavity; 12. Limiting groove; 121. First groove; 122. Second groove; 13. First pipe section; 14. Second pipe section;

[0026] 2. Striking head; 21. Groove; 22. Marking;

[0027] 3. Connecting assembly; 31. Connecting rod; 32. Locking tongue;

[0028] 4. Drive assembly; 41. First drive component; 411. Operating lever; 412. Knob; 42. Second drive component;

[0029] 5. Positioning component; 51. First positioning part; 52. Second positioning part;

[0030] 6. First boss; 7. Second boss;

[0031] 8. Handle assembly; 81. Handle body; 82. Pad; 83. Connecting shaft. Detailed Implementation

[0032] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0033] In this embodiment, as Figures 1 to 3 As shown, the glenoid impactor includes an outer tube assembly 1, an impact head 2, a connecting assembly 3, a drive assembly 4, and a positioning element 5. The outer tube assembly 1 has an inner cavity 11. The impact head 2 is disposed at the proximal end of the outer tube assembly 1, and the inner cavity 11 communicates with the impact head 2. The connecting assembly 3 is disposed in the inner cavity 11 and is axially movable relative to the inner cavity 11. The drive assembly 4 is disposed in the outer tube assembly 1 and connected to the connecting assembly 3, so as to drive the connecting assembly 3 to extend towards the proximal end of the outer tube assembly 1 or retract towards the distal end of the outer tube assembly 1. When the connecting assembly 3 extends, it can separate from the first mating part on the prosthesis (not shown in the figure), and when the connecting assembly 3 retracts, it can connect with the first mating part. The positioning element 5 is disposed in the impact head 2 and is used to cooperate with the second mating part on the prosthesis to position the prosthesis.

[0034] It should be noted that the proximal end of the outer tube assembly 1 refers to one end of the outer tube assembly 1 along its axial direction, and the distal end of the outer tube assembly 1 refers to the end of the outer tube assembly 1 that is axially opposite to the proximal end.

[0035] Understandably, when the prosthesis needs to be installed, the positioning element 5 is first positioned by moving the outer tube assembly 1 to engage with the second mating part on the prosthesis. Then, the connecting assembly 3 is extended and rotated by the drive assembly 4. After the connecting assembly 3 retracts, it connects with the first mating part of the prosthesis, thus allowing for stable and reliable holding of the prosthesis. Furthermore, by controlling the position and angle of the outer tube assembly 1, the prosthesis can be moved accurately and quickly to the required position and angle. Finally, the force is transmitted to the striking head 2 by striking the outer tube assembly 1, and the striking head 2 applies pressure to the prosthesis, allowing for stable implantation. After the prosthesis is implanted, the connecting assembly 3 is extended and rotated by the drive assembly 4, allowing the connecting assembly 3 to detach from the prosthesis and be removed from the outer tube assembly 1, which improves surgical efficiency. In addition, placing the connecting assembly 3 within the inner cavity 11 allows the inner cavity 11 to guide the connecting assembly 3, facilitating its stable extension and ensuring accurate engagement between the connecting assembly 3 and the first mating part on the prosthesis, further improving surgical efficiency.

[0036] In this embodiment, the prosthesis is divided into large-size prostheses and small-size prostheses, such as... Figure 4 As shown, the positioning component 5 includes a first positioning part 51 and a second positioning part 52. The first positioning part 51 is used to cooperate with the second mating part of the large-sized prosthesis, and the second positioning part 52 is used to cooperate with the second mating part of the small-sized prosthesis.

[0037] It is understandable that by setting the first positioning part 51 and the second positioning part 52 on the positioning member 5 to cooperate with the second mating part of the large prosthesis and the second positioning part 52 of the small prosthesis respectively, the positioning member 5 can position both the large and small prostheses, thus expanding the applicability of the glenoid impactor of this embodiment.

[0038] In this embodiment, as Figure 2 and Figure 3 As shown, the positioning component 5 includes two positioning posts spaced apart from the striking head 2, and the second mating part includes two positioning holes that correspond one-to-one with the positioning posts.

[0039] Specifically, each positioning post has a first positioning surface and a second positioning surface sequentially along its outer peripheral wall. The first positioning surface forms the second mating part of the large-sized prosthesis, and the second positioning surface forms the second mating part of the small-sized prosthesis. When positioning the large-sized prosthesis, the two positioning posts are inserted into the two positioning holes one-to-one, with the first positioning surface abutting against the relatively inner sides of the inner peripheral walls of the two positioning holes. When positioning the small-sized prosthesis, the two positioning posts are inserted into the two positioning holes one-to-one, with the second positioning surface abutting against the relatively outer sides of the inner peripheral walls of the two positioning holes.

[0040] Understandably, by setting the positioning element 5 as a positioning post and the second mating part as a positioning hole, the positioning of the prosthesis can be achieved by inserting the positioning post into the positioning hole. This allows for rapid positioning, facilitates operation, and improves surgical efficiency.

[0041] In this embodiment, as Figure 2 and Figure 3 As shown, the connecting assembly 3 includes a connecting rod 31 and a latch 32. The connecting rod 31 is disposed in the inner cavity 11 and connected to the driving assembly 4; the latch 32 is connected to the connecting rod 31 and is located at the proximal end of the outer tube assembly 1.

[0042] Specifically, the diameters of the proximal and distal ends of the connecting rod 31 are larger than the diameter of the middle part, so that a gap is formed between the middle part of the connecting rod 31 and the inner wall of the inner cavity 11. This can reduce the friction between the connecting rod 31 and the inner wall of the inner cavity 11 when the connecting rod 31 moves. At the same time, the connecting rod 31 can be guided by the cooperation between the two ends and the inner wall of the inner cavity 11, which is conducive to the stable and rapid movement of the connecting rod 31.

[0043] For example, a screw can be provided at the end of the latch 32 facing the connecting rod 31, and a threaded hole can be provided at the end of the connecting rod 31. The screw is threaded into the threaded hole, so that the latch 32 is connected to the connecting rod 31. The threaded connection between the connecting rod 31 and the latch 32 facilitates the installation and removal of the latch 32. When the shape or size of the first mating part on the prosthesis changes, it is easy to replace the latch 32 with a corresponding shape or size, so that the latch 32 matches and connects with the first mating part. The first mating part can be a locking hole that matches the shape of the latch 32. The shape of the latch 32 can be set by those skilled in the art as needed, and is not limited here.

[0044] It is understood that the connecting component 3 includes a connecting rod 31 and a latch 32. By setting the connecting rod 31 to cooperate with the inner cavity 11, the latch 32 can be stably driven to move through the connecting rod 31, so that the latch 32 can be accurately connected with the first mating part.

[0045] In this embodiment, as Figure 3As shown, the striking head 2 has a groove 21 on the side away from the outer tube assembly 1. The connecting rod 31 slides through the bottom wall of the groove 21, and the latch 32 is located on the side of the bottom wall of the groove 21 away from the outer tube assembly 1.

[0046] It is understandable that placing the tongue 32 in the groove 21 can make the overall structure more compact and allow the striking head 2 to be positioned in the middle of the corresponding outer tube assembly 1. This facilitates the uniform application of force to the striking head 2 through the connecting tube, thereby allowing the striking head 2 to apply force evenly to the prosthesis, which is beneficial for the stable implantation of the prosthesis.

[0047] In this embodiment, as Figures 1 to 3 As shown, the drive assembly 4 includes a first drive member 41 and a second drive member 42. The first connecting part of the first drive member 41 is connected to the outer tube assembly 1, and the second connecting part of the first drive member 41 is connected to the connecting assembly 3. The first drive member 41 is used to drive the connecting assembly 3 to extend. The first connecting part of the second drive member 42 is connected to the outer tube assembly 1, and the second connecting part of the second drive member 42 is connected to the connecting assembly 3. The second drive member 42 is used to cooperate with the first drive member 41 to drive the connecting assembly 3 to retract.

[0048] It should be noted that when it is necessary to connect the connecting component 3 to the prosthesis, the first driving component 41 is operated to drive the connecting component 3 to extend and rotate, and the second driving component drives the component 3 to retract to complete the connection to the prosthesis. When it is necessary to separate the connecting component 3 from the prosthesis, the first driving component 41 extends and rotates the connecting component 3, and the second driving component 42 drives the connecting component 3 to retract.

[0049] In this embodiment, as Figure 2 and Figure 3 As shown, the first driving member 41 includes an operating rod 411. A limiting groove 12 communicating with the inner cavity 11 is provided on the side wall of the outer tube assembly 1. The limiting groove is U-shaped. The operating rod 411 passes through the limiting groove 12 from the outside of the outer tube assembly 1 and is connected to the connecting assembly 3. The limiting groove 12 has a first groove 121 and a second groove 122 that are interconnected. The first groove 121 extends along the axial direction of the outer tube assembly 1, and the second groove 122 extends along the circumferential direction of the outer tube assembly 1. The second groove 122 is located on the side of the first groove 121 near the proximal end of the outer tube assembly 1. When the operating rod 411 moves into the second groove 122, the connecting assembly 3 extends out. When the operating rod 411 moves into the first groove 121, the second driving member 42 drives the connecting assembly 3 to retract.

[0050] Specifically, such as Figure 2 and Figure 3As shown, one end of the operating lever 411 forms a first connecting portion of the first driving member 41 and is connected to the connecting assembly 3, while the other end of the operating lever 411 forms a second connecting portion of the first driving member 41 and is limited within the limiting groove 12. Further, the operating lever 411 is connected to the connecting rod 31, and the connecting rod 31 has a corresponding insertion hole for the operating lever 411, into which the operating lever 411 is inserted.

[0051] It should be noted that when the connecting assembly 3 is in the retracted position, the operating lever 411 is located within the first groove 121. When it is necessary to extend the connecting assembly 3, the operating lever 411 is moved towards the proximal end of the outer tube assembly 1. When the operating lever 411 is moved from the first groove 121 to the second groove 122, the connecting assembly 3 extends. Then, the operating lever 411 is moved along the second groove 122. The operating lever 411 is limited between the two side walls of the second groove 122 that are axially distributed on the outer tube assembly 1, thereby keeping the connecting assembly 3 in the extended state. When it is necessary to retract the connecting assembly 3, the operating lever 411 is moved to the intersection of the second groove 122 and the first groove 121. Under the drive of the second driving member 42, the operating lever 411 resets, thereby driving the connecting assembly 3 to reset to the retracted state.

[0052] In this embodiment, as Figure 2 and Figure 3 As shown, the first driving component 41 also includes a knob 412, which is located outside the outer tube assembly 1 and connected to the operating lever 411. The knob 412 can move axially or rotate circumferentially relative to the outer tube assembly 1.

[0053] Specifically, the knob 412 is tubular and sleeved on the outer circumferential surface of the outer tube assembly 1, and the knob 412 can be clearance-fitted with the outer circumferential surface of the outer tube assembly 1. A corresponding insertion hole is provided on the peripheral wall of the knob 412 for the operating rod 411, and the operating rod 411 is inserted into the insertion hole of the knob 412. Thus, when the knob 412 is moved, the knob 412 can drive the operating rod 411 to move; when the knob 412 is rotated, the operating rod 411 can be rotated.

[0054] Understandably, by using a knob 412 instead of directly operating the lever 411, the contact surface can be increased, thus making it easier for the operator to perform the work.

[0055] In this embodiment, as Figure 3 As shown, the second driving member 42 includes an elastic member, which is disposed in the inner cavity 11 and on the circumferential outside of the connecting component 3. The proximal end of the elastic member elastically abuts against the first protrusion 6 in the inner cavity 11, and the distal end of the elastic member elastically abuts against the second protrusion 7 on the outer circumferential surface of the connecting component 3.

[0056] For example, the elastic element is a spring, which is sleeved on the outside of the connecting assembly 3. It is easy to install, can provide a stable and reliable restoring force, and has a long service life.

[0057] Specifically, such as Figure 3 As shown, when the connecting assembly 3 includes the connecting rod 31, the diameter of the distal end of the connecting rod 31 is larger than the diameter of the middle part. Therefore, a stepped surface can be formed at the junction of the distal end and the middle part of the connecting rod 31. The stepped surface can be used as the second boss 7, thereby saving the processing steps of the second boss 7.

[0058] It is understandable that, since the proximal end of the elastic element elastically abuts against the first protrusion 6 inside the inner cavity 11, and the distal end elastically abuts against the second protrusion 7 on the outer peripheral surface of the connecting assembly 3, when the first driving member 41 drives the connecting assembly 3 to extend, that is, when the second protrusion 7 applies pressure to the elastic element, the elastic element is compressed. When the first driving member 41 releases the pressure applied to the connecting assembly 3, the elastic element can drive the connecting assembly 3 to reset.

[0059] In this embodiment, as Figure 2 and Figure 3 As shown, the outer tube assembly 1 includes a first tube segment 13 and a second tube segment 14 connected sequentially from its proximal end to its distal end. The first tube segment 13 and the second tube segment 14 enclose an inner cavity 11, and a first protrusion 6 is formed between the first tube segment 13 and the second tube segment 14.

[0060] Specifically, such as Figure 3 As shown, a first boss 6 is formed between the first pipe segment 13 and the second pipe segment 14, meaning that the inner diameter of the first pipe segment 13 is smaller than the inner diameter of the second pipe segment 14, thereby allowing the first boss 6 to be formed on the inner ring end face of the second pipe segment 14. Of course, protrusions can be provided in the inner walls of the first pipe segment 13 and the second pipe segment 14 to form the first boss 6, which is not limited here.

[0061] It is understood that the outer tube assembly 1 includes a first tube segment 13 and a second tube segment 14. By forming a first boss 6 between the first tube segment 13 and the second tube segment 14, since the first boss 6 is located at the end of the first tube segment 13 or the second tube segment 14, it is convenient to process the first boss 6. When the first boss 6 is formed on the cross section of the first tube segment 13, the processing steps of the first boss 6 are saved, thereby further improving production efficiency.

[0062] In this embodiment, as Figure 1 As shown, the striking head 2 is marked with a mark 22.

[0063] Specifically, markings 22 can be provided on both the side of the striking head 2 facing the outer tube assembly 1 and the side of the striking head 2. For example, markings 22 can be color markings 22 or shape markings 22. The specific style of markings 22 can be set according to actual needs and is not limited here.

[0064] In this embodiment, by setting a mark 22 on the striking head 2, the operator can make adjustments according to the mark 22 when adjusting the position and angle of the prosthesis, which makes the operation convenient.

[0065] In this embodiment, as Figure 2 and Figure 3 As shown, the glenoid fossa impactor also includes a handle assembly 8, which is located at the distal end of the outer tube assembly 1.

[0066] It is understandable that by setting up the handle assembly 8, work can be performed by operating the handle assembly 8, and the handle assembly 8 can be set to the corresponding shape and size according to work habits, thus making it easier to operate.

[0067] In this embodiment, as Figure 3 As shown, the handle assembly 8 includes a handle body 81 and a pad 82. The handle body 81 is located at the far end of the outer tube assembly 1; the pad 82 is detachably located at the end of the handle body 81 opposite to the outer tube assembly 1.

[0068] For example, the handle body 81 can be made of silicone, which is comfortable to the touch, has good anti-slip properties, and helps to improve the user experience and control accuracy.

[0069] Specifically, the pad 82 can be supported by an impact-resistant material. Those skilled in the art can choose the specific material as needed, and no restrictions are imposed here.

[0070] Understandably, by setting up the handle body 81, the operation can be performed by operating the handle body 81. A pad 82 is set at the end of the handle body 81 away from the outer tube assembly 1. When implanting the prosthesis, the force can be transmitted to the striking head 2 by striking the pad 82. The pad 82 is set to be detachable. When the pad 82 is damaged, it is easy to replace the pad 82 without having to replace the entire striking device, which helps to reduce costs and increase service life.

[0071] In this embodiment, as Figure 3 As shown, the handle assembly 8 also includes a connecting shaft 83. The handle body 81 has a mounting groove at the end opposite to the outer tube assembly 1. The connecting shaft 83 is disposed in the mounting groove. The distal end of the outer tube assembly 1 extends into the mounting groove and is connected to the connecting shaft 83. The pad 82 is connected to the connecting shaft 83.

[0072] Specifically, the connecting shaft 83 has a first mounting hole at the end facing the connecting component 3, and a second mounting hole at the end facing away from the connecting component 3. The connecting component 3 is inserted into the first mounting hole and fixed to the connecting shaft 83 by a first connector to improve the reliability of the connection. For example, the first connector can be a connecting pin, which can be inserted radially into the connecting shaft 83 and the connecting component 3 sequentially. Similarly, one end of the pad 82 is inserted into the second mounting hole, and the pad 82 is connected to the connecting shaft 83 by a second connector. The connection method of the second connector can be the same as that of the first connector, and is not limited here.

[0073] It is understandable that by setting the connecting shaft 83 to connect both the connecting component 3 and the pad 82 to the handle body 81, when the connecting component 3 is forced away from the handle body 81, the bottom wall of the mounting groove limits the connecting shaft 83, making it difficult for the connecting component 3 to detach from the handle body 81. When the pad 82 is subjected to a force away from the handle body 81, the handle body 81 limits the connecting component 3, making it difficult for the connecting shaft 83 to detach from the pad 82 together, which helps to improve the overall reliability of the connection.

[0074] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0075] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0076] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0077] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0078] In this utility model, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0079] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A glenoid impactor, characterized in that, include: Outer tube assembly, the outer tube assembly having an inner cavity; A striking head is disposed at the proximal end of the outer tube assembly, and the inner cavity communicates with the striking head; A connecting assembly, wherein the connecting assembly is disposed in the inner cavity and is movable relative to the inner cavity along its axial direction; A driving component is disposed on the outer tube assembly and connected to the connecting component, so as to drive the connecting component to extend toward the proximal end of the outer tube assembly or retract toward the distal end of the outer tube assembly. When the connecting component extends, it can separate from the first mating part on the prosthesis, and when the connecting component retracts, it can connect with the first mating part. A positioning element is disposed on the striking head, and the positioning element is used to cooperate with a second mating part on the prosthesis to position the prosthesis.

2. The articular impactor according to claim 1, characterized in that, The prosthesis is divided into a large-size prosthesis and a small-size prosthesis. The positioning component includes a first positioning part and a second positioning part. The first positioning part is used to cooperate with the second mating part of the large-size prosthesis, and the second positioning part is used to cooperate with the second mating part of the small-size prosthesis. And / or, the positioning element includes two positioning posts spaced apart from the striking head, and the second mating part includes two positioning holes corresponding one-to-one with the positioning posts; And / or, it also includes a handle assembly disposed at the distal end of the outer tube assembly.

3. The articular impactor according to claim 1, characterized in that, The connection component includes: A connecting rod, wherein the connecting rod is disposed in the inner cavity and connected to the drive assembly; A latch, which is connected to the connecting rod and located near the end of the outer tube assembly.

4. The articular impactor according to claim 3, characterized in that, The striking head has a groove on the side opposite to the outer tube assembly, the connecting rod slides through the bottom wall of the groove, and the latch is located on the side of the bottom wall of the groove opposite to the outer tube assembly.

5. The articular impactor according to claim 1, characterized in that, The driving component includes: A first driving member, wherein a first connecting portion of the first driving member is connected to the outer tube assembly, and a second connecting portion of the first driving member is connected to the connecting assembly, and the first driving member is used to drive the connecting assembly to extend. The second driving member has a first connecting part connected to the outer tube assembly and a second connecting part connected to the connecting assembly. The second driving member is used to cooperate with the first driving member to drive the connecting assembly to retract.

6. The articular impactor according to claim 5, characterized in that, The first driving component includes an operating lever. A limiting groove communicating with the inner cavity is provided on the side wall of the outer tube assembly. The operating lever passes through the limiting groove from the outside of the outer tube assembly and is connected to the connecting component. The limiting groove has a first groove and a second groove that communicate with each other. The first groove extends along the axial direction of the outer tube assembly, and the second groove extends along the circumferential direction of the outer tube assembly. The second groove is located on the side of the first groove near the proximal end of the outer tube assembly. When the operating lever moves into the second groove, the connecting assembly extends; when the operating lever moves into the first groove, the second driving member drives the connecting assembly to retract.

7. The articular impactor according to claim 6, characterized in that, The first drive unit also includes a knob, which is disposed outside the outer tube assembly and connected to the operating lever. The knob is axially movable or circumferentially rotated relative to the outer tube assembly.

8. The articular impactor according to claim 5, characterized in that, The second driving member includes an elastic member disposed in the inner cavity and on the circumferential exterior of the connecting assembly. The proximal end of the elastic member elastically abuts against a first protrusion inside the inner cavity, and the distal end of the elastic member elastically abuts against a second protrusion on the outer circumferential surface of the connecting assembly.

9. The articular impactor according to claim 8, characterized in that, The outer tube assembly includes a first tube segment and a second tube segment connected sequentially from its proximal end to its distal end. The first tube segment and the second tube segment together enclose the inner cavity, and the first protrusion is formed between the first tube segment and the second tube segment.

10. The articular impactor according to claim 1, characterized in that, It also includes a handle assembly disposed at the distal end of the outer tube assembly.

11. The articular impactor according to claim 10, characterized in that, The handle assembly includes: A handle body, wherein the handle body is disposed at the distal end of the outer tube assembly; A pad is detachably disposed at one end of the handle body opposite to the outer tube assembly.

12. The articular impactor according to claim 11, characterized in that, The handle assembly also includes a connecting shaft. The handle body has a mounting groove at one end away from the outer tube assembly. The connecting shaft is disposed in the mounting groove. The distal end of the outer tube assembly extends into the mounting groove and is connected to the connecting shaft. The pad is connected to the connecting shaft.

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