A special measuring ruler for arthroscopy

Abstract

This utility model discloses a special measuring ruler for arthroscopy, including a handle and a measuring part. The handle includes a finger grip and a connecting part, with the finger grip connected to the lower end of the connecting part. The measuring part includes a graduated tube with markings on its body and a marker part that can move along the graduated tube. The end of the graduated tube is connected to the front end of the connecting part. A hollow measuring channel is opened inside the graduated tube, and a measuring ruler is installed inside the measuring channel. A movable groove is opened at the bottom of the graduated tube, connecting to the measuring channel. The marker part passes through the movable groove and is connected to the measuring ruler. The front end of the measuring ruler is the measuring ruler head. It can quantify the degree of lesions, facilitating accurate intraoperative assessment and clinical data collection. Through ingenious design, the reading can be taken directly under the endoscope or externally. The scale is marked on both the front and back, allowing the surgeon and assistant to read and verify the results simultaneously, improving the accuracy of the results. Finally, the instrument can be sterilized and reused, reducing medical costs.

Description

Technical Field

[0001] This utility model belongs to the field of arthroscopic tools, specifically relating to a measuring ruler for arthroscopy. Background Technology

[0002] With the increasing maturity of arthroscopic technology, more and more patients are undergoing arthroscopic surgery, and the number of surgeries is rising year by year.

[0003] However, in shoulder arthroscopy, the assessment of the size (length, depth) of rotator cuff tears and the degree of Hill-Sachs injury (diameter, depth) under arthroscopy; in knee arthroscopy, the degree of meniscus tears (tear length), the measurement of bone tunnels in knee cruciate ligament reconstruction, and the assessment of the degree of articular cartilage degeneration (diameter, depth) under knee and ankle arthroscopy are often not accurate enough.

[0004] During surgery, the most common technique is to use an arthroscopic probe (with a 4mm curved tip) to roughly assess the size of the rotator cuff tear to guide screw placement and suture placement; or to use a suture hook (with a transverse diameter of about 6mm and a diameter of about 10mm) for approximate measurement. Assessment of Hill-Sachs tears primarily relies on preoperative CT measurements combined with intraoperative surgeon visual inspection to determine whether remplissage repair is necessary. The assessment and management of meniscal tears and cartilage damage are mainly based on the surgeon's experience to determine the meniscal suture spacing, cartilage microfracture treatment, or osteochondral grafting. Because the size and depth of the lesion cannot be accurately assessed, intraoperative management is primarily based on the surgeon's experience and subjective assessment, and the results vary from surgeon to surgeon. Utility Model Content

[0005] The purpose of this invention is to provide a special measuring ruler for arthroscopy to accurately quantify the degree of lesions.

[0006] The purpose of this utility model is achieved through the following technical means: a measuring ruler for arthroscopy, including a handle and a measuring part, wherein the handle includes a finger grip and a connecting part, and the finger grip is connected to the lower end of the connecting part; The measuring part includes a graduated tube with graduations on its body and a marking part that can move along the graduated tube. The end of the graduated tube is connected to the front end of the connecting part. The graduated tube has a hollow measuring tube inside, and a measuring ruler is installed inside the measuring tube. The bottom of the graduated tube has a moving groove that connects to the measuring tube. The marking part passes through the moving groove and is connected to the measuring ruler. The front end of the measuring ruler is the measuring ruler head, which extends out of the measuring tube and is located at the front end of the graduated tube. The finger gripping part is circular.

[0007] The marking part includes a ring, a guide rod connected to the ring, the guide rod being inserted into the moving groove and connected to the measuring ruler, and an observation part that is fitted onto the scale tube.

[0008] The observation section is a ring fitted onto the graduated tube.

[0009] The front end of the scale tube is also bent to form a curved tube, and the measuring ruler head is located at the front end of the curved tube.

[0010] The observation section consists of two tail fins that bend along the scale tube, with the two tail fins clamping the scale tube in the middle.

[0011] The length of the movable groove is less than the length of the scale tube.

[0012] The curved tube is marked with graduations and is bent in the horizontal direction.

[0013] The beneficial effects of this utility model are as follows: 1. The curved tube and the graduated tube are set with different lengths. The curved tube is shorter. When the measuring ruler is fully retracted, smaller lesions can be measured by the graduations on the curved tube. For larger lesions, the measuring ruler is moved by the ring, and the graduations on the graduated tube are used to measure the larger lesions.

[0014] 2. The observation section covers the graduated tube from both sides, allowing the measurement to be taken under the microscope after the operation, or the surgeon and assistant on both sides to take the reading. The reading is no longer limited to the surgeon, making it more convenient. Attached Figure Description

[0015] Figure 1 Diagram of the structure of a measuring ruler for arthroscopy; Figure 2 Top view of the arthroscopic measuring ruler; Figure 3 A top view of the arthroscopic measuring ruler; Figure 4 This is a schematic diagram of the first type of observation section structure; Figure 5 This is a schematic diagram of the second type of observation section structure; In the diagram: 1. Finger grip; 2. Connecting part; 3. Scale tube; 4. Moving groove; 5. Measuring ruler; 6. Finger ring; 7. Guide rod; 8. Observation part; 9. Bending tube; 10. Measuring ruler head. The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Detailed Implementation

[0016] like Figure 1 As shown, an arthroscopic measuring ruler includes a handle and a measuring part. The handle includes a finger grip part 1 and a connecting part 2, with the finger grip part 1 connected to the lower end of the connecting part 2. The measuring part includes a graduated tube 3 with graduations on its body, and a marking part that can move along the graduated tube 3. The end of the graduated tube 3 is connected to the front end of the connecting part 2. The scale tube 3 has a hollow measuring pipe inside, and a measuring ruler 5 is installed inside the measuring pipe. The bottom of the scale tube 3 has a moving groove 4 that connects to the measuring pipe. The marking part passes through the moving groove 4 and is connected to the measuring ruler 5. The front end of the measuring ruler 5 is a measuring ruler head 10, which extends out of the measuring pipe and is located at the front end of the scale tube 3. The graduated tube is a hollow design with a diameter of 4mm, and the specific diameter can be changed according to actual needs.

[0017] The handle includes a finger grip section 1 for finger gripping, and a connecting section 2 for connecting the finger grip section 1 and the scale tube 3 of the measuring section. The connecting section 2 is L-shaped to facilitate steering. Figure 1 As shown, the L-shaped connecting part 2 allows the finger grip part 1 to face downwards from the scale tube 3.

[0018] The scale tube 3 has a hollow measuring tube inside for holding the measuring ruler 5. The bottom of the scale tube 3 has an upward moving groove 4, which is connected to the measuring tube. The marking part is connected to the measuring ruler 5 through the moving groove 4, and can be pushed back and forth along the moving groove 4.

[0019] The finger grip portion 1 is circular. The circular shape makes it convenient for the user to grip.

[0020] The marking part includes a ring 6, a guide rod 7 connected to the ring 6, the guide rod 7 is inserted into the moving groove 4 and connected to the measuring ruler 5, and an observation part 8 that is sleeved on the scale tube 3 is also connected to the ring 6.

[0021] The ring 6 facilitates the movement of the entire moving part. The ring 6 is inserted into the moving groove 4 through the guide rod 7 and connected to the measuring ruler 5. When in use, the measuring ruler is moved by pushing it through the ring 6.

[0022] The observation section 8 is fitted onto the scale tube 3 and can slide and move, acting as a pointer to allow the user to observe the position of the scale on the scale tube 3, thereby clearly observing how much distance the measuring ruler 5 has moved.

[0023] like Figure 5 As shown, the observation part 8 is a ring fitted onto the scale tube 3.

[0024] like Figure 4 As shown, the observation section 8 consists of two tail fins that bend along the scale tube 3, with the two tail fins clamping the scale tube 3 in the middle.

[0025] The observation section 8 can be ring-shaped and fitted onto the scale tube 3, or it can take other forms, such as two arc-shaped bent tail fins, with the two tail fins clamping the scale tube 3 from both sides.

[0026] Since the observation section 8 must clamp the scale tube 3 from both sides, it is equivalent to both sides of the scale tube 3 being pointers indicating the scale. When in use, the surgeon and the assistant on the other side of the surgeon can quickly and clearly see the specific scale indicated.

[0027] The front end of the scale tube 3 is also bent to form a curved tube 9, and the measuring ruler head 10 is located at the front end of the curved tube 9.

[0028] like Figure 2 As shown, the curved tube 9 bends on the horizontal plane, that is, it bends to the left of the graduated tube 3. Figure 2 This is only a structural diagram. To clearly show the small structure of the bent tube 9, the bent tube 9 has been enlarged for display. It is not a scale of the actual product.

[0029] The degree of curvature of the bent pipe can be as follows: Figure 2 The angle is 90 degrees, but it can also be made at 135 degrees or even 180 degrees, thus becoming a straight tube without bending.

[0030] This allows for the use of arthroscopic measuring rulers with various curved tubes and different degrees of curvature, enabling flexible selection as needed during surgery.

[0031] The curved tube 9 is used for measuring small lesions. After bending to the left, there is a horizontal straight tube with a length of 4mm. The measuring ruler head 10 is semi-circular with a radius of 1mm, and the straight tube is marked with graduations.

[0032] The radius of the measuring ruler head 10 and the length of the straight tube are not fixed and can be made in various sizes as needed, such as a straight tube length of 5mm, etc., allowing for flexible selection during use.

[0033] When measuring small lesions, it is not necessary to move the measuring ruler through the observation section 8. The measurement can be performed directly through the scale of the straight tube section after the bending of the curved tube 9. For example, if the part of the curved tube 9 is cut into the patient's body through the arthroscopic approach and the scale of the part exposed outside the patient's body shows 3mm, then the lesion position is 4mm, that is, 3mm as shown on the scale, plus 1mm of the measuring ruler head 10.

[0034] Meanwhile, since the entire curved tube 9 and the measuring ruler head 10 are only 5mm long, which is very short, the front end can be adjusted at will after entering through the inlet in the retracted state to facilitate measurement operation and precisely measure lesions at different locations.

[0035] like Figure 3As shown, the length of the movable groove 4 is less than the length of the scale tube 3. The scale on the scale tube 3 corresponds to the length of the movable groove 4. Only the scale tube 3 above the movable groove 4 has a scale. For example, if the entire scale tube 3 is 20cm long, the movable groove 4 is set to 15cm (the distance between an adult's thumb and forefinger when fully extended is generally 18cm). The scale tube 3 above the movable groove 4 is marked with a 15cm scale. A small unmarked length is left at both ends of the scale tube 3.

[0036] The lengths of the scale tube 3 and the moving groove 4 can also be changed as needed. It is not limited to the scale tube 3 being 20cm long and the moving groove 4 being 15cm long.

[0037] The curved tube 9 is marked with graduations and is bent in the horizontal direction.

[0038] When measuring small lesions, the scale 3 is in the retracted state, that is, the observation part 8 is at the 0 mark, the head 10 of the measuring scale is attached to the front end of the curved tube 9, and the measurement is carried out only by the scale on the curved tube 9.

[0039] When measuring large lesions, the user places their thumb into the finger grip 1 and their index finger into the finger ring 6. By extending and retracting the index finger, the user can push the measuring ruler 5 to move and complete the measurement. The measuring ruler 5 can bend along the curved part of the curved tube 9 and then extend straight along the straight tube. The distance moved is determined by the observation section 8, which acts as a pointer, and the scale on the scale tube 3.

[0040] The structure of this application can quantify the degree of lesions, facilitating accurate intraoperative assessment and the collection of clinical data, thus supporting scientific research. Secondly, through ingenious design, the readings can be taken directly under the microscope or externally, with scales marked on both the front and back, allowing the surgeon and assistant to read and verify the results simultaneously, improving the accuracy of the results. Finally, the instrument can be sterilized and reused, reducing medical costs.

Claims

1. A measuring ruler specifically for arthroscopy, characterized in that: It includes a handle and a measuring part. The handle includes a finger grip (1) and a connecting part (2). The finger grip (1) is connected to the lower end of the connecting part (2). The measuring part includes a graduated tube (3) with graduations on its body, and a marking part that can move along the graduated tube (3). The end of the graduated tube (3) is connected to the front end of the connecting part (2). The scale tube (3) has a hollow measuring pipe inside, and a measuring ruler (5) is installed inside the measuring pipe. The bottom of the scale tube (3) has a moving groove (4) that connects to the measuring pipe. The marking part passes through the moving groove (4) and is connected to the measuring ruler (5). The front end of the measuring ruler (5) is the measuring ruler head (10), which extends out of the measuring pipe and is located at the front end of the scale tube (3). The marking part includes a finger ring (6), and a guide rod (7) is connected to the finger ring (6). The guide rod (7) is inserted into the moving groove (4) and connected to the measuring ruler (5). The finger ring (6) is also connected to an observation part (8) that is sleeved on the scale tube (3). The front end of the scale tube (3) is also bent to form a curved tube (9), and the measuring ruler head (10) is located at the front end of the curved tube (9). The curved tube (9) is marked with graduations and is bent in the horizontal direction.

2. The arthroscopic measuring ruler according to claim 1, characterized in that: The finger gripping part (1) is circular.

3. The arthroscopic measuring ruler according to claim 1, characterized in that: The observation part (8) is a ring fitted on the scale tube (3).

4. The arthroscopic measuring ruler according to claim 1, characterized in that: The observation section (8) consists of two tail fins that bend along the scale tube (3), with the two tail fins holding the scale tube (3) in the middle.

5. The arthroscopic measuring ruler according to claim 1, characterized in that: The length of the moving groove (4) is less than the length of the scale tube (3).

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