Hip arthroscopic surgery approach positioning device
By adjusting the angle of the positioning sleeve using the left and right positioning arms with their concentric arc design, the problem of multiple fluoroscopic punctures during hip arthroscopy is solved, achieving accurate entry into the joint cavity and reducing fluoroscopic radiation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-25
- Publication Date
- 2026-04-03
AI Technical Summary
Existing arthroscopic surgical devices require multiple punctures under fluoroscopy to correct deviations before entering the joint cavity, leading to prolonged operation time and the risk of damage to important blood vessels and nerves.
The left and right positioning arms are designed with concentric arcs and threaded holes. By stacking and adjusting the angle of the positioning sleeves, it is ensured that they all point to the center of the arthroscope within the range of 30-120°. They are then fixed with screws to avoid inaccurate positioning during blind puncture and reduce the number of fluoroscopy sessions.
This method enables accurate puncture into the joint cavity, reduces fluoroscopic radiation exposure and surgical time, and lowers the radiation risk and surgical complexity for patients.
Smart Images
Figure CN224070424U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of medical device technology, and in particular to a hip arthroscopic surgical approach positioning device. Background Technology
[0002] When performing arthroscopic surgery on the hip joint, it is necessary to first establish an arthroscopic approach. Because the hip joint is located deep within the body, it is not only covered by abundant muscles and ligaments, but also has the femoral nerve and blood vessels, lateral femoral cutaneous nerve, sciatic nerve, and the ascending branch of the lateral circumflex femoral artery running through it, making the establishment of an arthroscopic approach no easy task. The current procedure involves first performing lower limb traction to expand the joint space, then establishing an anterolateral approach under fluoroscopic guidance, followed by the establishment of other additional approaches (including anterior approach, auxiliary anterior-middle approach, and posterior approach). When establishing additional approaches, the current method is to first locate bony landmarks, use these landmarks as references to mark puncture points on the skin, and then puncture into the joint cavity under fluoroscopic guidance.
[0003] However, because the skin is far from the joint cavity and is separated by thick muscles, blood vessels and nerves, it is difficult to control the angle and depth of the puncture needle. The puncture accuracy is not high, and it is necessary to perform repeated punctures and correct deviations under fluoroscopy before entering the joint cavity. This significantly increases the operation time and also increases the risk of damaging important blood vessels, nerves, glenoid labrum and cartilage outside the joint.
[0004] Therefore, we need a hip arthroscopic surgical approach positioning device that can solve the problem that existing approach devices require multiple punctures under fluoroscopy to correct deviations before entering the joint cavity. Utility Model Content
[0005] The purpose of this application is to provide a hip arthroscopic surgical approach positioning device that can solve the problem that existing approach devices require multiple punctures under fluoroscopy to correct deviations before entering the joint cavity.
[0006] To achieve the above objectives, the embodiments of this application adopt the following technical solution: a hip arthroscopy surgical approach positioning device, comprising: a sheath, the sheath being a tubular shape matching the arthroscope, the sheath accommodating the arthroscope entering and exiting the joint cavity; an arthroscope, the arthroscope being disposed within the sheath and inserted into the sheath; a left positioning arm, the left positioning arm being disposed on the sheath, one end of the left positioning arm being connected to the sheath, and the left positioning arm having a connection hole; a positioning sleeve, the positioning sleeve being disposed on the side of the right positioning arm, the positioning sleeve being hollow and having an opening; a right positioning arm, the right positioning arm being disposed on the positioning sleeve, the right positioning arm having a connection hole, the right positioning arm having the same center as the left positioning arm, one end of the right positioning arm being connected to the positioning sleeve, the right positioning arm and the left positioning arm being movably connected, and the positioning sleeve pointing to the center indicated by the arthroscope at any position within its movement trajectory range.
[0007] In the above technical solution, this embodiment uses a left and right positioning arm designed with concentric circles of the same radius, and threaded holes. The left and right positioning arms are then stacked, ensuring that the positioning sleeve at one end of the right positioning arm points to the center indicated by the arthroscope at any point within its movement trajectory. This allows for a wide adjustment range of the positioning sleeve angle, from 30-120°. The left and right positioning arms are fixed with screws, securing the positioning sleeve in the required position. This avoids the inaccurate blind puncture positioning and repeated operations required in existing technologies, eliminates the need for repeated C-arm fluoroscopy, reduces patient radiation exposure, and shortens surgical time. It solves the problem that existing access devices require multiple punctures under fluoroscopy to correct deviations before entering the joint cavity, achieving accurate puncture entry into the joint cavity.
[0008] Furthermore, according to an embodiment of this application, a fixing screw is also provided on the left positioning arm, which is used to fix the left positioning arm and the right positioning arm.
[0009] Furthermore, according to an embodiment of this application, the sheath is used to be inserted into the joint cavity to form a channel and protect the surrounding tissues.
[0010] Furthermore, according to embodiments of this application, the positioning device further includes:
[0011] The guide tube is located inside the positioning sleeve, and the inside of the guide tube is a hollow structure.
[0012] The tissue separation rod is placed inside the guide tube and is used to separate soft tissue, pushing the guide tube all the way to the front of the joint capsule;
[0013] The trocar is placed inside the guide tube and is used to enlarge the joint capsule incision.
[0014] Furthermore, according to an embodiment of this application, the outer diameter of the guide tube is smaller than that of the positioning sleeve, and the inner diameter is large enough to insert a tissue separation rod.
[0015] Furthermore, according to an embodiment of this application, the diameter of the stab handle is the same as that of the tissue separation rod, and the tip is spindle-shaped with a sharp edge.
[0016] Furthermore, according to the embodiments of this application, the left positioning arm has four positioning holes. When the four threaded holes of the left positioning arm and the right positioning arm are aligned, the angle between the arthroscope and the positioning sleeve is 30°. When the left positioning arm and the right positioning arm have one threaded hole aligned, the angle between the arthroscope and the positioning sleeve is 120°.
[0017] Furthermore, according to the embodiments of this application, the arthroscope is currently widely used in the market and is used to observe the internal structure of the joint.
[0018] Furthermore, according to an embodiment of this application, the positioning sleeve has openings at both ends, and the positioning sleeve is used for positioning during surgery.
[0019] Compared with existing technologies, this application has the following advantages: This application employs a hip arthroscopic surgical approach positioning device. It utilizes a left and right positioning arm, both designed as concentric circles with the same radius and threaded holes. The left and right positioning arms are stacked, ensuring that the positioning sleeve at one end of the right positioning arm always points to the center indicated by the arthroscope within its movement trajectory. This allows for a wide adjustment range of the positioning sleeve angle, from 30-120°. The left and right positioning arms are fixed with screws, securing the positioning sleeve in the required position. This avoids the inaccurate blind puncture positioning and repeated operations required in existing technologies, eliminates the need for repeated C-arm fluoroscopy, reduces fluoroscopic radiation exposure for the patient, and shortens surgical time. It solves the problem of existing approach devices requiring multiple punctures under fluoroscopy to correct deviations before entering the joint cavity, achieving accurate puncture entry into the joint cavity. Attached Figure Description
[0020] The present application will be further described below with reference to the accompanying drawings and embodiments.
[0021] Figure 1 This is a schematic diagram of a hip arthroscopic surgical approach positioning device according to an embodiment.
[0022] Figure 2 This is a schematic diagram of the slide groove fixing structure in an embodiment.
[0023] In the attached diagram
[0024] 1. Arthroscopy 2. Sheath 3. Positioning sleeve
[0025] 4. Left positioning arm; 5. Right positioning arm; 6. Threaded hole
[0026] 7. Fixing screws; 8. Guide tube; 9. Tissue separation rod
[0027] 10. Piercing knife 11. Slide groove Detailed Implementation
[0028] To make the objectives, technical solutions, and advantages of this utility model clear and complete, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of this utility model, and are merely used to explain the embodiments of this utility model. They are not intended to limit the embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0029] In the description of this utility model, it should be noted that the terms "center," "middle," "upper," "lower," "left," "right," "inner," "outer," "top," "bottom," "side," "vertical," and "horizontal," 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 do not 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. Furthermore, the terms "a," "first," "second," "third," "fourth," "fifth," and "sixth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0031] For purposes of simplicity and illustration, the principles of the embodiments are described primarily by way of example. In the following description, numerous specific details are set forth to provide a thorough understanding of the embodiments. However, it will be apparent to those skilled in the art that these embodiments may not be limited to these specific details in practice. In some instances, well-known methods and structures have not been described in detail to avoid unnecessarily obscuring these embodiments. Furthermore, all embodiments can be used in combination with each other.
[0032] Example 1:
[0033] like Figure 1 As shown, this application discloses a hip arthroscopic surgical approach positioning device, characterized in that it includes: a sheath 2, which is a tubular tube matching the arthroscope 1, and the sheath 2 accommodates the arthroscope 1 to enter and exit the joint cavity; an arthroscope 1, which is disposed inside the sheath 2 and inserted into the sheath 2; a left positioning arm 4, which is disposed on the sheath 2, with one end of the left positioning arm 4 connected to the sheath 2, and a connection hole provided on the left positioning arm 4; a positioning sleeve 3, which is disposed on the side of the right positioning arm 5, and the positioning sleeve 3 is hollow and has an opening; and a right positioning arm 5, which is disposed on the positioning sleeve 3, with a connection hole provided on the right positioning arm 5, and the right positioning arm 5 has the same center as the left positioning arm 4, with one end of the right positioning arm 5 connected to the positioning sleeve 3, and the right positioning arm 5 and the left positioning arm 4 are movably connected, and the positioning sleeve 3 points to the center indicated by the arthroscope 1 at any position within its movement trajectory range.
[0034] Specifically, a fixing screw 7 is also provided on the left positioning arm 4, which is used to fix the left positioning arm 4 and the right positioning arm 5. The fixing screw 7 passes through the threaded holes 6 of the left positioning arm 4 and the right positioning arm 5 to fix the positioning sleeve 3 with the adjusted angle.
[0035] Specifically, sheath 2 is used to insert into the joint cavity to form a channel and protect the surrounding tissues.
[0036] Specifically, the positioning device also includes: a guide tube 8, which is housed within the positioning sleeve 3 and has a hollow interior; a tissue separation rod 9, also housed within the guide tube 8, used to separate soft tissue and push the guide tube 8 all the way to the front of the joint capsule; and a stab knife 10, housed within the guide tube 8, used to enlarge the joint capsule incision. The outer diameter of the guide tube 8 is smaller than that of the positioning sleeve 3, while its inner diameter is large enough to accommodate the tissue separation rod 9. The handle diameter of the stab knife 10 is the same as that of the tissue separation rod 9, and its tip is spindle-shaped with a sharp edge.
[0037] Specifically, the positioning sleeve 3 always faces the tip of the arthroscope 1 at any angle, guiding the trocar to the right end of the arthroscope 1. The tissue dissection rod 9, in conjunction with the guide tube 8, uses a slingshot technique to dissect soft tissue, reducing the risk of damage to blood vessels and nerves.
[0038] Specifically, the left positioning arm 4 has four threaded holes 6. When the four threaded holes 6 of the left positioning arm 4 and the right positioning arm 5 are aligned, the angle between the arthroscope 1 and the positioning sleeve 3 is 30°. When the positioning arm is aligned with one threaded hole 6 of the right positioning arm 5, the angle between the arthroscope 1 and the positioning sleeve 3 is 120°.
[0039] Specifically, arthroscopy 1 is currently the most widely used in the market. Arthroscopy 1 is used to observe the internal structures of joints.
[0040] Specifically, the positioning sleeve 3 has openings at both ends and is used for positioning during surgery.
[0041] Specifically, during hip arthroscopy, the skin incision locations for the anterolateral approach, anterior approach, and auxiliary anterior-middle approach are marked with a marking pen according to bony landmarks on the body surface. The lower limb is first pulled back, and the anterolateral approach is initiated under C-arm fluoroscopy. After successfully placing the arthroscope 1 into the joint cavity, additional approaches such as the auxiliary anterior-middle approach and anterior approach are performed as needed. The arthroscope 1 is then removed, the exchange rod is inserted into the joint cavity, and the positioning device is switched. The arthroscope 1 sheath 2 of the positioning device is inserted into the joint cavity along the exchange rod, and then the arthroscope 1 is reinserted into the joint cavity along the arthroscope 1 sheath 2. Then, based on the location of the additional approach skin incision, move the right positioning arm 5. After determining the required position, lock the right positioning arm 5 with the fixing screw 7. Insert the guide tube 8 into the positioning sleeve 3, make a skin incision about 8mm long, use the tissue separation rod 9 to separate the soft tissue, push the guide tube 8 all the way to the front of the joint capsule, and then insert the trocar 10 into the joint cavity from the guide tube 8. After confirming that the trocar 10 has entered the joint cavity under direct vision of the arthroscope 1, the joint capsule incision can be enlarged with the trocar 10 as needed for the operation.
[0042] Specifically, this application utilizes a left positioning arm 4 and a right positioning arm 5, both designed as concentric circles with the same radius, and equipped with threaded holes 6. The left and right positioning arms 4 and 5 are then stacked, ensuring that the positioning sleeve 3 at one end of the right positioning arm 5 always points to the center indicated by the arthroscope 1 within its movement trajectory. This allows for a wide range of angle adjustment for the positioning sleeve 3, from 30 to 120°. The left and right positioning arms 4 and 5 are secured with fixing screws 7, fixing the positioning sleeve 3 in the desired position. This avoids the inaccurate blind puncture positioning and repeated operations required in existing technologies, eliminates the need for repeated C-arm fluoroscopy, reduces patient fluoroscopic radiation exposure, and shortens surgical time. Furthermore, this device is simple to manufacture and reusable. It solves the problem of existing access devices requiring multiple punctures under fluoroscopy to correct deviations before entering the joint cavity, achieving accurate puncture entry into the joint cavity.
[0043] Example 2:
[0044] like Figure 2As shown, modifications are made to the left positioning arm 4 and right positioning arm 5 based on Embodiment 1. The left positioning arm 4 is hollow inside, with an opening at one end and a screw or pin for fixing near the opening. The right positioning arm 5 is a concentric circle with the same radius as the left positioning arm 4, and has a groove 11 with an angle on its outer side. The right positioning arm 5 is inserted into the left positioning arm 4 through the opening and can slide on the left positioning arm 4. The angle on the right positioning arm 5 pressed against by the opening end of the left positioning arm 4 is the angle between the positioning sleeve 3 and the arthroscope 1. By sliding the right positioning arm 5, the angle of the positioning sleeve 3 can be adjusted at any time and fixed by the fixing components. This avoids the inaccurate blind puncture positioning and repeated operations of the prior art, avoids repeated C-arm fluoroscopy, reduces the patient's fluoroscopic radiation dose, and shortens the operation time. It solves the problem that existing access devices require multiple punctures under fluoroscopy to correct deviations before entering the joint cavity, achieving the effect of accurate puncture into the joint cavity.
[0045] Although the illustrative specific embodiments of this application have been described above to enable those skilled in the art to understand this application, this application is not limited to the scope of the specific embodiments. For those skilled in the art, all applications utilizing the concept of this application are protected as long as various variations are within the spirit and scope of this application as defined and determined by the appended claims.
Claims
1. A hip arthroscopic surgical approach positioning device, characterized by, It comprises: a sheath, which is a tubular matched with an arthroscope, the sheath containing the arthroscope to enter or exit the joint cavity; the arthroscope, which is arranged in the sheath, inserted into the sheath; a left positioning arm, which is arranged on the sheath, one end of the left positioning arm being connected with the sheath, and a connecting hole being arranged on the left positioning arm; a positioning sleeve, which is arranged on the right positioning arm side, the positioning sleeve being hollow, and the positioning sleeve having an opening; the right positioning arm, which is arranged on the positioning sleeve, a connecting hole being arranged on the right positioning arm, the right positioning arm having the same center as the left positioning arm, one end of the right positioning arm being connected with the positioning sleeve, and the right positioning arm being movably connected with the left positioning arm, the positioning sleeve being directed to the center of the arthroscope at any position in the moving track range.
2. A hip arthroscopic surgical access positioning device according to claim 1, wherein, The left positioning arm is further provided with a fixing screw, which is used for fixing the left positioning arm and the right positioning arm.
3. The hip arthroscopic surgical access positioning device of claim 1, wherein, The sheath is used for inserting into the joint cavity to form a channel and protect the surrounding tissues.
4. The hip arthroscopic surgical access positioning device of claim 1, wherein, The positioning device further comprises: a guide tube, which is arranged in the positioning sleeve, the guide tube being hollow; a tissue separation rod, which is arranged in the guide tube, the tissue separation rod being used for separating soft tissues and pushing the guide tube to the front of the joint capsule; a punch, which is arranged in the guide tube, the punch being used for enlarging the joint capsule incision.
5. An arthroscopic surgical access positioning device according to claim 4, wherein, The guide tube has an outer diameter smaller than the positioning sleeve and an inner diameter capable of inserting the tissue separation rod.
6. A hip arthroscopic surgical access positioning device according to claim 4, wherein, The punch handle has a diameter equal to that of the tissue separation rod, and the tip is a shuttle-shaped blade.
7. The hip arthroscopic surgical access positioning device of claim 1, wherein, The positioning hole on the left positioning arm has four holes, when the left positioning arm is aligned with the four threaded holes of the right positioning arm, the angle between the arthroscope and the positioning sleeve is 30°, and when the left positioning arm is aligned with one threaded hole of the right positioning arm, the angle between the arthroscope and the positioning sleeve is 120°.
8. The hip arthroscopic surgical access positioning device of claim 1, wherein, The arthroscope is commonly used in the market, and the arthroscope is used for observing the structure inside the joint.
9. The hip arthroscopic surgical access positioning device of claim 1, wherein, The positioning sleeve has openings at both ends, and the positioning sleeve is used for positioning the surgery.