Drag hook assembly for hip replacement and medical instrument system

Abstract

The utility model discloses a drag hook assembly and a medical instrument system for hip joint replacement, the drag hook assembly can comprise a drag hook and an identification frame suite, the drag hook comprises a tip warp, an arc-shaped transition handle and a fixed handle; the free end of the pointed warped part is pointed, and the pointed warped part is warped below the acetabular transverse ligament; the fixing handle is used for being externally connected with a fixing clamp to fix the drag hook. The identification frame kit is used for being arranged on the sharp warped part in a sleeving mode and comprises a first identification rod, a second identification rod, a first swing rod and a second swing rod, the first swing rod and the second swing rod are movably connected with the first identification rod and the second identification rod respectively, and the first identification rod, the second identification rod, the first swing rod and the second swing rod define a parallelogram structure; the first identification rod is used for abutting against the pointed warped part, and the second identification rod is used for being connected with the pointed warped part in the state that the first identification rod is adjusted to be parallel to the acetabular transverse ligament. Compared with the prior art, due to the design of the identification frame suite, the accuracy of placing the hip joint cup and the operation efficiency are remarkably improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, and particularly relates to a retractor assembly for hip replacement surgery and a medical device system. Background Art

[0002] Artificial hip replacement surgery is an effective surgical method for treating hip joint diseases or injuries. By implanting artificial prostheses (acetabular prostheses, hip joint acetabular cups) into the patient's body, the diseased joint is replaced to reconstruct the normal hip joint function. During the surgery, it is necessary to fully expose the patient's acetabulum to facilitate subsequent surgical operations. Referring to Figure 1 and Figure 2 As shown, the commonly used method in clinical practice at present is to use multiple retractors to retract tissues such as skin and muscles to expose the surgical field. However, traditional retractors have some deficiencies, such as short handles, blunt tips of the retractors, and laborious and time-consuming pulling by assistants. The operation is laborious and time-consuming, affecting the efficient progress of the surgery.

[0003] In addition, when placing the hip joint acetabular cup, since the acetabular transverse ligament ( Figure 1 the green part in) will be blocked and cannot be directly observed, it is difficult for doctors to accurately judge the horizontal angle of the hip joint acetabular cup, affecting the ideal implantation of the hip joint acetabular cup.

[0004] Therefore, a new type of retractor assembly is needed, which can effectively expose the surgical field, reduce the workload of assistants, and at the same time provide reference marks to help doctors judge the placement angle of the hip joint acetabular cup, thereby improving the accuracy and efficiency of the surgery. Summary of the Utility Model

[0005] In order to accurately judge the horizontal angle of the hip joint acetabular cup and fully expose the surgical field, the utility model provides a retractor assembly for hip replacement surgery and a medical device system.

[0006] In a first aspect, an embodiment of the utility model provides a retractor assembly for hip replacement surgery. The retractor assembly may include: a retractor and a marking frame kit. The retractor includes a tip, an arc-shaped transition handle, and a fixed handle; the free end of the tip is pointed, and the tip is used to pry under the acetabular transverse ligament; the fixed handle is used to externally connect a fixed clip to fix the retractor;

[0007] The marking frame kit is used to be sleeved on the tip. The marking frame kit may include: a first marking rod, a second marking rod, and a first swing rod and a second swing rod respectively movably connected to the first marking rod and the second marking rod. The first marking rod, the second marking rod, the first swing rod, and the second swing rod enclose a parallelogram structure;

[0008] The first marking rod is used to abut against the tip, and the second marking rod is used to connect with the tip when the first marking rod and the acetabular transverse ligament are adjusted to be parallel.

[0009] In one embodiment, the length of the first identification rod is greater than that of the second identification rod, the first swing rod is movably connected to the ends of the first identification rod and the second identification rod respectively, one end of the second swing rod is movably connected to the middle area of ​​the first identification rod, and the other end is movably connected to the end of the second identification rod.

[0010] In one embodiment, the second swing arm extends at one end movably connected to the second identification rod, and the hook assembly may further include a protractor, which is detachably connected to one end of the second swing arm away from the first identification rod; the protractor is used to measure the angle between the horizontal plane of the hip acetabulum and the second identification rod when the hip acetabulum is placed, so as to adjust the placement angle of the hip acetabulum.

[0011] In one embodiment, the tip is provided with a first slide groove along the central axis direction of the hook, and the second identification rod is provided with a second slide groove; the hook assembly also includes a connecting bolt; the connecting bolt passes through the first slide groove and the second slide groove, and when the first identification rod and the acetabular transverse ligament are parallel, the second identification rod is fixed to the tip by the connecting bolt.

[0012] In one embodiment, the length of the first marking rod is 5 cm±0.5 cm, and the length of the second marking rod is 3 cm±0.5 cm; the first marking rod and the second marking rod are made of stainless steel.

[0013] In one embodiment, the first identification rod is used to abut against the tip and is located on the side of the tip away from the transverse acetabular ligament, and the second identification rod is used to connect to the tip and is located on the side of the tip that fits the transverse acetabular ligament.

[0014] In one embodiment, a mounting hole is formed on the tip, and the mounting hole is close to one side of the free end of the tip;

[0015] The mounting hole is used for externally connecting a guide head, and the guide head is used for connecting with a drainage tube of an aspirator.

[0016] In one embodiment, the fixing handle is provided with a plurality of through holes, and an external fixing clip fixes the hook through the through holes.

[0017] In a second aspect, an embodiment of the utility model provides a medical device system for hip replacement, comprising: a fixing clamp, a connecting head, an aspirator, and a retractor assembly for hip replacement as described in the first aspect;

[0018] The fixing clip is connected to the fixing handle of the draw hook to fix the draw hook;

[0019] The connecting head is connected to the pointed tip through the mounting hole on the pointed tip in the retractor, and the suction device is connected to the connecting head through a drainage tube.

[0020] In one embodiment, a thread is provided on the outer wall of one end of the connecting head connected to the mounting hole, and the connecting head is threadedly connected to the mounting hole;

[0021] The clamping wall at one end of the connecting head and the drainage tube of the suction device is open, a pawl is provided on the inner side of the clamping wall, a protrusion is provided on the outer side of the clamping wall, and a groove matching the protrusion is provided on the inner side of the open end of the clamping wall.

[0022] The beneficial effects of the above technical solution provided by the embodiment of the utility model at least include:

[0023] The embodiment of the utility model provides a retractor assembly and a medical device system for hip replacement surgery. The retractor structure in the retractor assembly is more reasonably designed, which can reduce the work intensity of the assistant, effectively expose the surgical field of view, provide sufficient space for surgical operations, improve surgical efficiency, and improve surgical accuracy. The identification frame kit is cleverly designed, the first identification rod is parallel to the patient's acetabular transverse ligament, and the second identification rod is parallel to the first identification rod. By observing the second identification rod, it is easy to judge the angle between the horizontal plane of the hip acetabulum and the second identification rod, indicating the ideal placement of the hip acetabulum and improving the surgical effect. The identification frame kit can be fixed on the retractor, has a compact structure, and will not affect the surgical field of view and the retractor operation.

[0024] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by implementing the utility model. The purpose and other advantages of the utility model can be realized and obtained by the structures particularly pointed out in the written description and the drawings.

[0025] The technical solution of the utility model is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0027] Figure 1 Schematic diagram of the hip joint transverse acetabular ligament and retractor surgery;

[0028] Figure 2 It is a structural diagram of a draw hook in the prior art;

[0029] Figure 3 A structural diagram of a draw hook provided in an embodiment of the utility model;

[0030] Figure 4 This is one of the structural diagrams of the hook assembly provided in the embodiment of the utility model;

[0031] Figure 5 This is the second structural diagram of the hook assembly provided in the embodiment of the utility model;

[0032] Figure 6 This is an example of a structural diagram of a hip acetabular cup;

[0033] Figure 7 This is a schematic diagram of the structure of a medical device system provided in an embodiment of the present utility model;

[0034] Figure 8 A structural diagram of a connecting head provided in an embodiment of the utility model;

[0035] Figure 9 for Figure 8 Sectional view in the middle AA direction;

[0036] 1- retractor assembly; 2- fixing clip; 3- hip acetabular cup; 4- guide head; 5- suction device;

[0037] 11-retractor hook; 12-marking frame kit; 13-connecting bolt; 41-thread; 42-clamping wall; 43-ratchet; 51-drainage tube;

[0038] 111-pointed handle; 112-arc transition handle; 113-fixed handle;

[0039] 121 - first identification rod; 122 - second identification rod; 123 - first swing rod; 124 - second swing rod; 125 - protractor;

[0040] 421- raised portion; 422- recessed portion;

[0041] 1111-first slide groove; 1112-mounting hole; 1131-through hole; 1221-second slide groove. DETAILED DESCRIPTION

[0042] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present disclosure can be more thoroughly understood and the scope of the present disclosure can be fully conveyed to those skilled in the art.

[0043] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "far", "near", "front", "rear", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and should not be construed as indicating or implying relative importance.

[0044] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0045] In the prior art regarding the problem of determining the horizontal plane position of the hip acetabular cup during hip replacement surgery, the existing technical solutions are as follows: For example, Patent CN114403952A discloses an auxiliary retractor device for hip replacement surgery, including a base, a support rod, a telescopic rod, a first clamping member, a second clamping member, a first connecting rod, a connecting swing rod, a fixed hook assembly, and a fixed hook assembly connecting rod. This device saves surgical space and improves surgical efficiency. However, in actual application, the inventor found that the positions of the fixed hook assembly and the fixed hook assembly connecting rod may affect the exposure of the acetabulum and the retractor operation. Patent CN215839236U discloses a retractor that is more suitable for exposure on the acetabular side during posterior lateral approach total hip replacement surgery, including a handle sleeve and a handgrip piece. The bottom end of the handgrip piece is connected to a hook piece, the hook piece is arc-shaped, and a sawtooth is connected to the end of the hook piece away from the handgrip piece. This retractor has the advantages of being convenient for the surgical assistant to hold the handle, the front hole structure can facilitate the assistant to support this retractor with the other hand, and the frontmost serrated structure can increase the stability of the retractor under the acetabular labrum and is not easy to slip off. However, different degrees of polishing treatment on the arc structure of the hook body are still required to enhance the exposure effect and reduce soft tissue damage, which still needs further improvement.

[0046] After analyzing the existing retractors or retractor auxiliary tools in the prior art, the inventor found that the existing retractors or retractor auxiliary tools have the following drawbacks or defects: 1. Traditional retractors are difficult to fully expose the surgical field of view, affecting the smooth progress of surgical operations; 2. Traditional retractors are prone to cause tissue damage during use, increasing the pain of patients; 3. Traditional retractors require long-term traction by assistants; 4. When placing the hip acetabular cup (refer to Figure 6 ), due to the acetabular transverse ligament being blocked and unable to be directly observed, it is difficult to accurately judge the horizontal angle of the hip acetabular cup, affecting the ideal implantation of the hip acetabular cup; 5. The existing auxiliary devices have complex structures and may affect the exposure of the acetabulum and the retractor operation in actual application. In view of the above problems, the present utility model is proposed to provide a retractor assembly and a medical device system for hip replacement surgery that overcome the above problems or at least partially solve the above problems.

[0047] In an embodiment of the present utility model, a retractor assembly for hip replacement surgery is provided, referring to Figures 3 to 5 , and in combination with Figure 7As shown in the figure, the retractor assembly 1 may include a retractor 11 and an identification frame kit 12. The retractor 11 includes a pointed tip 111, an arc-shaped transition handle 112, and a fixed handle 113. The free end of the pointed tip 111 is pointed, and the pointed tip 111 is used to pry (insert) under the acetabular transverse ligament. The fixed handle 113 is used to externally connect to a fixing clip 2 to fix the retractor 11. The identification frame kit 12 is used to be sleeved on the pointed tip 111. The identification frame kit 12 may include a first identification rod 121, a second identification rod 122, and a first swing rod 123 and a second swing rod 124 that are respectively movably connected to the first identification rod 121 and the second identification rod 122. The first identification rod 121, the second identification rod 122, the first swing rod 123, and the second swing rod 124 enclose a parallelogram structure. The first identification rod 121 is used to abut against the pointed tip 111, and the second identification rod 122 is used to connect to the pointed tip 111 in a state where the first identification rod 121 is adjusted to be parallel to the acetabular transverse ligament.

[0048] The above-mentioned retractor 11 in the embodiment of the present utility model is integrally formed, and successively includes a pointed tip 111, an arc-shaped transition handle 112, and a fixed handle 113. During use, the pointed tip 111 is used to pry under the acetabular transverse ligament, and the fixed handle 113 is used to externally connect to the fixing clip 2 to fix the retractor 11. On the one hand, this reduces the working intensity of the assistant, and on the other hand, it ensures the stability of the entire retractor 11 during use. At the same time, the design of the arc-shaped transition handle 112 can increase the length of the handle of the entire retractor 11, so that the fixed handle 113 is extended farther, and the arc-shaped area of the arc-shaped transition handle 112 helps to reserve the operation space for the doctor and avoid the fixed handle 113 from interfering with the doctor's hand surgery operation. The free end of the pointed tip 111 is pointed, which is convenient for inserting into the hip joint gap, that is, under the acetabular transverse ligament, and the assistant does not need to always hold the retractor 11 by hand, and both hands can be freed to assist the doctor in performing other surgical operations.

[0049] In the prior art, after the hip joint acetabular cup 3 is placed, the hip joint acetabular cup 3 will block the acetabular transverse ligament. Therefore, in order to solve this technical problem, the inventor innovatively proposed the inventive concept of using the identification frame kit 12 in cooperation with the retractor 11. The identification frame kit 12 in this embodiment is a separately used kit, which can be used as a separate surgical instrument or as a surgical instrument assembled with the retractor 11 (assembling together is convenient for disinfection before surgery and also convenient for the doctor to operate quickly). The inventive concept of the identification frame kit 12 in this embodiment is to make a parallelogram structure, so that during use, the first identification rod 121 can be abutted against the side of the pointed tip 111 close to the free end. Before placing the hip joint acetabular cup 3, by adjusting the second identification rod 122, the first swing rod 123, and the second swing rod 124, the first identification rod 121 is made parallel to the acetabular transverse ligament, and then the second identification rod 122 is fixed on the retractor 11.

[0050] What needs to be explained in this embodiment is that since the identification frame kit 12 is mounted on the pointed tip 111, after the free end of the pointed tip 111 is tilted below the transverse ligament of the acetabulum, the first identification rod 121 is located on the side facing the surgeon, and the second identification rod 122 is located on the side away from the surgeon. In this way, the retractor 11 also applies force (tilts) to the first identification rod 121 and the second identification rod 122 respectively. Therefore, after the second identification rod 122 is fixed on the pointed tip 111, the position of the identification frame kit 12 relative to the pointed tip 111 is relatively fixed.

[0051] It should also be noted that in this embodiment, the first swing arm 123 and the second swing arm 124 are respectively movably connected to the first identification rod 121 and the second identification rod 122. The movable connection methods in this embodiment include but are not limited to the following connection methods: hinge connection, ball joint connection, universal joint connection, etc.

[0052] The inventor found in the actual development and use process that the first swing rod 123 and the second swing rod 124 are at a certain angle with the central axis direction of the hook 11 as a whole, and there is a certain space from the hook 11 (the tip 111 of the hook 11), so it is not easy to fix the first swing rod 123 or the second swing rod 124 on the tip 111. If other parts are added to fix the first swing rod 123 or the second swing rod 124 on the tip 111, it will inevitably occupy the surgical operation space and increase the difficulty of fixing, which is not conducive to the doctor's working time (generally hip replacement surgery takes a few minutes to complete). Therefore, in the embodiment of the utility model, it is preferred to fix the identification frame kit 12 on the hook 11 by fixing the second identification rod 122. In this way, since the second identification rod 122 is far away from the free end of the tip 111 (that is, far away from the transverse ligament of the acetabulum), it is convenient for surgical operation.

[0053] The hook structure design in the above-mentioned hook assembly provided in this embodiment is more reasonable, which can reduce the work intensity of the assistant, effectively expose the surgical field of view, provide sufficient space for surgical operations, improve surgical efficiency, and improve surgical accuracy; the identification frame kit is cleverly designed, the first identification rod is parallel to the patient's acetabular transverse ligament, and the second identification rod is parallel to the first identification rod. By observing the second identification rod, it is easy to judge the angle between the horizontal plane of the hip acetabulum and the second identification rod, indicating the ideal placement of the hip acetabulum and improving the surgical effect; the identification frame kit can be fixed on the hook, with a compact structure, and will not affect the surgical field of view and the hook operation.

[0054] Furthermore, the retractor and identification frame kit are both made of stainless steel, have good biocompatibility and corrosion resistance, are reusable, and are economical and environmentally friendly.

[0055] In an alternative embodiment, referring to Figure 4 and Figure 5As shown, the length of the first identification rod 121 is greater than that of the second identification rod 122. The first swing rod 123 is movably connected to the ends of the first identification rod 121 and the second identification rod 122 respectively. One end of the second swing rod 124 is movably connected to the middle area of the first identification rod 121, and the other end is movably connected to the end of the second identification rod 122.

[0056] In the embodiment of the present utility model, in order to prevent the second identification rod 122 from interfering with other surgical instruments or other body tissues, the second identification rod 122 is set to a shorter length. Since the first identification rod 121 is abutted against one side of the tip 111 near the free end, the length of the first identification rod 121 cannot be shorter than the width of the tip 111. In this embodiment, the first swing rod 123 is movably connected to the ends of the first identification rod 121 and the second identification rod 122 respectively, and the second swing rod 124 is movably connected to the end of the second identification rod 122, while the second swing rod 124 is movably connected to the middle area of the first identification rod 121, so that the four components can form a parallelogram structure, so that the first identification rod 121 and the second identification rod 122 always remain parallel.

[0057] In a specific embodiment, the length of the first identification rod 121 is 5 cm ± 0.5 cm, and the length of the second identification rod 122 is 3 cm ± 0.5 cm; the first identification rod 121 and the second identification rod 122 are made of stainless steel. In a specific example, the retractor 11 is integrally made of stainless steel. The length of the tip 111 of the retractor 11 is 5 cm, the angle of the free end (tip) is 30°, and the total length of the arc transition handle 112 and the fixed handle 113 is 10 cm, the diameter is 1 cm, and the curvature radius of the arc transition handle 112 is 5 cm. In order to adapt to the retractor 11, in this example, the length of the first identification rod 121 is 5 cm, the diameter is 0.3 cm, the length of the second identification rod 122 is 3 cm, the diameter is 0.2 cm, the length of the first swing rod 123 is 3 cm, and the length of the second swing rod 124 is 8 cm, the diameter is 0.4 cm.

[0058] In another alternative embodiment, still referring to Figure 4 and Figure 5 as shown, the end of the second swing rod 124 movably connected to the second identification rod 122 extends. The retractor assembly 1 may further include a protractor 125, and the protractor 125 is detachably connected to the end of the second swing rod 124 away from the first identification rod 121; the protractor 125 is used to measure the angle between the horizontal plane of the hip joint acetabular cup 3 and the second identification rod 122 in the state of placing the hip joint acetabular cup 3 (refer to Figure 6 ) to realize the adjustment of the placement angle of the hip joint acetabular cup 3.

[0059] The protractor 125 in this embodiment is made of plastic material. The protractor 125 is installed on the second swing rod 124 when not in use, and is removed from the second swing rod 124 when in use, so as to quickly measure the angle between the horizontal plane of the hip joint acetabulum 3 and the second marking rod 122, so that there is no need to temporarily find other protractors 125 when in use, which is convenient for surgical operation and saves time. In a specific example, the protractor 125 has a diameter of 2 cm, a scale range of 0°~90°, and a graduation value of 1°.

[0060] In another optional embodiment, also refer to Figure 4 and Figure 5 As shown, the tip 111 is provided with a first slide groove 1111 along the central axis direction of the hook 11, and the second identification rod 122 is provided with a second slide groove 1221; the hook assembly 1 may also include a connecting bolt 13; the connecting bolt 13 passes through the first slide groove 1111 and the second slide groove 1221, and when the first identification rod 121 is parallel to the transverse ligament of the acetabulum, the second identification rod 122 is fixed to the tip 111 by the connecting bolt 13.

[0061] In this embodiment, a specific connection method between the second identification rod 122 and the pointed tip 111 is provided, by providing a first slide groove 1111 on the pointed tip 111, providing a second slide groove 1221 on the second identification rod 122, and then using a connecting bolt 13 to penetrate the first slide groove 1111 and the second slide groove 1221 to achieve the fixing of the second identification rod 122. In specific use, when no operation is performed, the identification frame kit 12 is also connected to the retractor 11 through this structure, but the connecting bolt 13 is in a loose state and not completely tightened at this time, and the retractor 11 and the identification frame kit 12 are connected together for easy cleaning and disinfection; during the operation, when the free end of the pointed tip 111 is tilted below the transverse ligament of the acetabulum, and the fixing handle 113 is fixed by the fixing clamp 2, the angle of the first identification rod 121 is adjusted to be parallel to the transverse ligament of the acetabulum, and the second identification rod 122 is fixed to the pointed tip 111 at this time, and the horizontal angle of the hip joint acetabulum 3 can be judged.

[0062] In another optional embodiment, also refer to Figure 4 and Figure 5 As shown, the first marking rod 121 is used to abut against the tip 111 and is located at the tip 111 away from the acetabular transverse ligament ( Figure 1The second identification rod 122 is used to be connected to the tip 111 and is located on the side where the tip 111 fits the transverse ligament of the acetabulum. Since the identification frame kit 12 is sleeved on the tip 111, there are two sleeve methods. In this embodiment, the first identification rod 121 is located on the side of the tip 111 away from the transverse ligament of the acetabulum (the side facing the operation of the medical staff), and the second identification rod 122 is located on the side of the tip 111 that fits the transverse ligament of the acetabulum (the side away from the operation of the medical staff). This position setting is convenient for medical staff to adjust the first identification rod 121 so that the first identification rod 121 is parallel to the transverse ligament of the acetabulum, and on the other hand, it is prevented that the first identification rod 121 and the transverse ligament of the acetabulum are entangled.

[0063] In another optional embodiment, also refer to Figure 4 and Figure 5 As shown, a mounting hole 1112 is provided on the tip 111, and the mounting hole 1112 is close to one side of the free end of the tip 111; the mounting hole 1112 is used to connect the external guide head 4, and the guide head 4 is used to connect to the drainage tube 51 of the suction device 5. The mounting hole 1112 on the tip 111 in the embodiment of the utility model is to facilitate the installation of the guide head 4, so that by installing the guide head 4 and the suction device 5, the (bloody) effusion generated during the operation can be drained out in time, avoiding the effusion affecting the surgical operation and the effusion infection.

[0064] In another optional embodiment, also refer to Figure 4 and Figure 5 As shown, the fixing handle 113 is provided with a plurality of through holes 1131, and the external fixing clip 2 fixes the hook 11 through the through holes 1131. In this embodiment, the through holes 1131 on the fixing handle 113 can cooperate with the fixing clip 2 to fix the hook 11, further stabilizing the position of the entire hook 11. In this embodiment, a specific fixing handle 113 external connection structure is provided, and by providing the through holes 1131 on the fixing handle 113, the fixing handle 113 and the fixing clip 2 are connected through the through holes 1131, as shown in FIG. Figure 3 As shown, a plurality of through holes 1131 may be provided on the fixing handle 113 , and different through holes 1131 may be selected according to actual needs to adapt to the best fixing position.

[0065] Based on the same inventive concept, the present invention also provides a medical device system for hip replacement surgery, referring to Figure 7 as well as Figures 3 to 5 As shown, the system may include: a fixing clamp 2, a connecting head 4, an aspirator 5 and the above-mentioned retractor assembly 1 for hip replacement; the fixing clamp 2 is connected to the fixing handle 113 of the retractor 11 to fix the retractor 11; the connecting head 4 is connected to the pointed tip 111 in the retractor 11 through the mounting hole 1112 on the pointed tip 111, and the aspirator 5 is connected to the connecting head 4 through the drainage tube 51.

[0066] In another alternative embodiment, with reference to Figure 8 and Figure 9 as shown, a thread 41 is provided on the outer wall of one end of the adapter 4 connected to the mounting hole 1112, and the adapter 4 is threadedly connected to the mounting hole 1112 (with reference to Figure 3 or Figure 5 as shown); the clamping wall 42 of one end of the adapter 4 connected to the drainage tube 51 of the aspirator 5 is open, a pawl 43 is provided inside the clamping wall 42, a protrusion 421 is provided outside the clamping wall 42, and a groove 422 matching the protrusion 421 is provided inside the opening end of the clamping wall 42. The above-mentioned adapter 4 in this embodiment is more convenient for installing the drainage tube 51, enabling the rapid application of this medical device during the operation and saving operation time.

[0067] For the specific description and beneficial effects of the above-mentioned medical device system for hip replacement surgery in this embodiment, reference may be made to the retractor assembly in the above-mentioned embodiment, and the embodiments of the present invention will not be elaborated herein.

[0068] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. The present disclosure is not limited to the exact structure already described and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present disclosure is only limited by the appended claims. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these changes and modifications.

Claims

1. A retractor assembly for hip replacement, characterized in that: The retractor assembly comprises: a retractor and a marking frame kit, wherein the retractor comprises a pointed tip, an arc-shaped transition handle and a fixed handle; the pointed tip is used to be placed below the transverse ligament of the acetabulum; the fixed handle is used to be externally connected with a fixing clip to fix the retractor; The identification frame kit is used to be mounted on the tip, and the identification frame kit includes: a first identification rod, a second identification rod, and a first swing rod and a second swing rod movably connected to the first identification rod and the second identification rod respectively, and the first identification rod, the second identification rod, the first swing rod and the second swing rod form a parallelogram structure; The first marking rod is used to abut against the tip, and the second marking rod is used to connect with the tip when the first marking rod and the acetabular transverse ligament are adjusted to be parallel.

2. The hook assembly according to claim 1, characterized in that: The length of the first identification rod is greater than that of the second identification rod, the first swing rod is movably connected to the ends of the first identification rod and the second identification rod respectively, one end of the second swing rod is movably connected to the middle area of ​​the first identification rod, and the other end is movably connected to the end of the second identification rod.

3. The hook assembly according to claim 2, characterized in that: The second swing arm extends at one end movably connected to the second identification rod, and the hook assembly also includes a protractor, which is detachably connected to the end of the second swing arm away from the first identification rod; the protractor is used to measure the angle between the horizontal plane of the hip acetabulum and the second identification rod when the hip acetabulum is placed, so as to adjust the placement angle of the hip acetabulum.

4. The hook assembly according to claim 2, characterized in that: The tip is provided with a first slide groove along the central axis direction of the hook, and the second identification rod is provided with a second slide groove; the hook assembly also includes a connecting bolt; the connecting bolt passes through the first slide groove and the second slide groove, and when the first identification rod and the acetabular transverse ligament are parallel, the second identification rod is fixed to the tip by the connecting bolt.

5. The hook assembly according to claim 2, characterized in that: The length of the first marking rod is 5 cm±0.5 cm, and the length of the second marking rod is 3 cm±0.5 cm; the first marking rod and the second marking rod are made of stainless steel.

6. The hook assembly according to any one of claims 1 to 5, characterized in that: The first identification rod is used to abut against the tip and is located on the side of the tip away from the acetabular transverse ligament, and the second identification rod is used to connect to the tip and is located on the side of the tip abutting against the acetabular transverse ligament.

7. The hook assembly according to any one of claims 1 to 5, characterized in that: A mounting hole is provided on the tip, and the mounting hole is close to one side of the free end of the tip; The mounting hole is used for externally connecting a guide head, and the guide head is used for connecting with a drainage tube of an aspirator.

8. The hook assembly according to any one of claims 1 to 5, characterized in that: The fixing handle is provided with a plurality of through holes, and an external fixing clip fixes the draw hook through the through holes.

9. A medical device system for hip replacement, characterized in that: include: A fixing clamp, a connecting head, an aspirator and a retractor assembly for hip replacement as claimed in any one of claims 1 to 8; The fixing clip is connected to the fixing handle of the draw hook to fix the draw hook; The connecting head is connected to the pointed tip through the mounting hole on the pointed tip in the retractor, and the suction device is connected to the connecting head through a drainage tube.

10. The system according to claim 9, characterized in that A thread is provided on the outer wall of one end of the connecting head connected to the mounting hole, and the connecting head is threadedly connected to the mounting hole; The clamping wall at one end of the connecting head and the drainage tube of the suction device is open, a pawl is provided on the inner side of the clamping wall, a protrusion is provided on the outer side of the clamping wall, and a groove matching the protrusion is provided on the inner side of the open end of the clamping wall.

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