Kirschner wire retractor under arthroscope and use method of Kirschner wire retractor

Abstract

The invention relates to the technical field of kirschner wire tractors, in particular to an arthroscopic kirschner wire retractor and a using method thereof.The arthroscopic kirschner wire retractor comprises a long handle and a guide needle, the bottom of the long handle is fixedly connected with a pull ring, the arthroscopic kirschner wire retractor further comprises a limiting traction mechanism used for limiting the pulled guide needle, the limiting traction mechanism is located at the end of the long handle, and the pull ring is fixedly connected with the pull ring; the limiting traction mechanism comprises a U-shaped groove and a positioning sleeve which are formed in the top of the long handle; through the effect of a limiting traction mechanism and the effect of a positioning sleeve, a worker can conveniently insert a guide needle into a fracture block of a patient, the positioning sleeve, a long handle and a pull ring are integrally arranged, the worker can conveniently use the traction device, the reduction and fixation treatment effect of the worker on the fracture block of the patient is improved, and the working efficiency is improved. And when the electric drill drives the guide pin to rotate, the guide pin is prevented from slipping off and causing difficulty in reduction of an avulsion fracture block, the operation time is correspondingly shortened, and ischemia reperfusion injury of an affected limb is relieved.

Description

Technical Field

[0001] The invention belongs to the technical field of Kirschner wire retractors, and in particular relates to an arthroscopic Kirschner wire retractor and a use method thereof. Background Art

[0002] The arthroscopic Kirschner wire retractor is a medical device used in arthroscopic surgery. It combines the functions of Kirschner wires and retractors and is mainly used for fracture reduction and fixation. In arthroscopic surgery, the doctor will first observe the fracture site through an arthroscope and determine the type and location of the fracture. Then, the Kirschner wire retractor is used to accurately insert the Kirschner wire into the fracture site and apply appropriate traction force through the handle of the retractor to reduce the fracture fragments to the correct position. Then, the doctor will use other fixation devices (such as hollow screws, etc.) as needed to further fix the fracture fragments to ensure their stability. The arthroscopic Kirschner wire retractor is an efficient and precise medical device that plays an important role in fracture surgery. Through reasonable use and maintenance, the success rate of the operation and the patient's rehabilitation effect can be ensured. However, it should be noted that the use of the Kirschner wire retractor should strictly follow medical standards and operating procedures to ensure the safety and effectiveness of the operation.

[0003] Arthroscopic Kirschner wire retractors are widely used in various fracture surgeries, especially those fracture types that require precise reduction and fixation. For example, in anterior cruciate ligament tibial insertion avulsion fracture surgery, doctors can use Kirschner wire retractors to reduce and fix the fracture fragments, thereby restoring the normal function and stability of the anterior cruciate ligament. In addition, Kirschner wire retractors can also be used for fracture surgeries in other joints, such as the knee, hip, ankle, etc.

[0004] Kirschner wire retractor plays an important role in the medical field, especially in orthopedic surgery. Kirschner wire retractor is a medical device. Kirschner wire is a steel needle commonly used in surgical operations. It has high strength and good corrosion resistance and can withstand large tensile forces. The traction device is used to pull the Kirschner wire to achieve bone traction and reduction. Kirschner wire retractor is mainly used for bone traction during fracture reduction, bone cutting, bone lengthening and other surgical procedures.

[0005] Ankle sprains are very common, and one of the consequences is avulsion fracture of the lateral malleolus. The traditional treatment method is open reduction and internal fixation surgery under anesthesia, but it is relatively traumatic to the patient. Compared with traditional surgery, minimally invasive ankle arthroscopy reduction and percutaneous internal fixation surgery causes less trauma to the patient and has become a new trend in the treatment of this disease.

[0006] Under minimally invasive ankle arthroscopy, after detecting the fracture fragment, the Kirschner wire or guide needle is first inserted percutaneously. The Kirschner wire or guide needle penetrates into the fracture fragment but does not completely pass through the fracture fragment. Then, the Kirschner wire or guide needle is pulled under the scope to reduce the fracture fragment to the lateral malleolus tip. After reduction, the Kirschner wire or guide needle is completely passed through the fracture fragment, and then the Kirschner wire or guide needle is inserted into the main bone block of the lateral malleolus tip.

[0007] However, in the actual operation, there is a lack of instruments for pulling the Kirschner wire or guide needle under the microscope. We can only clamp the Kirschner wire or guide needle with vascular clamps or other instruments and pull it at the same time. However, when the electric drill is used, the rotation of the Kirschner wire or guide needle often causes the Kirschner wire or guide needle to slip off repeatedly, making it difficult to reduce the avulsed fracture fragment, prolonging the operation time, and aggravating the ischemia-reperfusion injury of the affected limb.

[0008] Based on the above reasons, the arthroscopic Kirschner wire retractor and the use method thereof proposed in the present invention can assist in resetting the avulsed fracture fragment of the lateral malleolus, shorten the operation time, and reduce ischemia-reperfusion injury of the affected limb. Summary of the invention

[0009] The purpose of the present invention is to provide an arthroscopic Kirschner wire retractor and a method of using the same to solve the problems raised in the above-mentioned background technology.

[0010] To achieve the above object, the present invention provides the following technical solutions:

[0011] The arthroscopic Kirschner wire retractor comprises a long handle and a guide wire, wherein a pull ring is fixedly connected to the bottom of the long handle, and further comprises:

[0012] A limiting pulling mechanism is used to limit the pulling guide needle. The limiting pulling mechanism is located at the end of the long handle. The limiting pulling mechanism includes a U-shaped groove and a positioning sleeve opened at the top of the long handle. Both sides of the inner wall of the U-shaped groove are rotatably connected with a rotating shaft. The outer wall of the positioning sleeve is provided with a circular sliding groove. The outer wall of the positioning sleeve is provided with two square sliding grooves. Both sides of one end of the positioning sleeve are connected with a traction rope.

[0013] Through the setting of the above technical scheme, during the operation, the lateral malleolus avulsion fracture fragment is first found under the arthroscopy, at this time the positioning sleeve is in a vertical state, the retractor is inserted into the patient's ankle joint through the surgical incision, the guide needle or Kirschner wire is inserted percutaneously using an electric drill, the positioning sleeve is moved to rotate, so that the positioning sleeve is in a horizontal state, the guide needle is inserted into the internal through hole of the positioning sleeve, the guide needle or Kirschner wire is penetrated into the interior of the positioning sleeve, and the guide needle or Kirschner wire is inserted into the interior of the patient's fracture fragment using an electric drill. After pulling the pull ring and resetting the fracture fragment to a satisfactory position, the guide needle or Kirschner wire is completely penetrated through the fracture fragment by an electric drill to fix it to the main bone fragment. A small incision B is made at the place where the Kirschner wire or guide needle enters the skin, and a threader is inserted. The end of the threader passes through incision A. Two pull ropes are inserted into the threader, and the end of the threader is pulled to make the two pull ropes pass through incision B. The two pull ropes are pulled to make the two rotating shafts (301) slide along the square groove (304). When sliding to the end of the square groove (304), the U-shaped groove (3) is separated from the annular sleeve (302), and the pull ring (2) is pulled to remove the long handle (1) and the U-shaped groove (3). Then the threader is inserted from incision A, and the end of the threader passes through incision B. The two pull ropes are inserted into the threader, and the end of the threader is pulled to make the two pull ropes pass through incision A.

[0014] When removing the positioning sleeve, the positioning sleeve is rotated with the Kirschner wire or guide needle as the axis. When the positioning sleeve is rotated to the position, two pull ropes are pulled to separate the positioning sleeve from the Kirschner wire or guide needle. The pull ropes are continued to be pulled to remove the positioning sleeve from the small surgical incision.

[0015] Preferably, a through hole is provided inside the positioning sleeve, and the outer wall of the guide needle and the inner wall of the through hole are slidably fitted.

[0016] Preferably, the positioning sleeve is located between the two rotating shafts, and the outer wall of the rotating shaft and the inner wall of the circular sliding groove are slidably fitted.

[0017] Preferably, the square slide groove passes through the circular slide groove, the two square slide grooves are symmetrically arranged, and the ends of the square slide grooves extend to the ends of the outer side walls of the positioning sleeve.

[0018] Preferably, the two square slide grooves are arranged corresponding to the two rotating shafts, and the outer side walls of the rotating shafts and the inner side walls of the square slide grooves are arranged to be slidably fitted.

[0019] Preferably, the sleeve between the two symmetrical square grooves on the outer wall of the positioning sleeve is set as an open loop, and the width of the ring opening at the open loop is greater than the diameter of the Kirschner wire or the guide needle.

[0020] Preferably, the positioning sleeve is rotated to a vertical state, and its top extends to the outside of the U-shaped groove.

[0021] Preferably, the positioning sleeve is rotated to a horizontal state, and both sides thereof extend to the outside of the U-shaped groove.

[0022] Preferably, the two traction ropes are symmetrically arranged, and the long handle, the pull ring and the positioning sleeve are all made of stainless steel.

[0023] Through the setting of the above technical solution, it should be noted that: the stainless steel material of the long handle, the pull ring and the positioning sleeve is a medical setting;

[0024] The long handle, pull ring and positioning sleeve are made of stainless steel, which has the following advantages:

[0025] Stainless steel has high strength and hardness, which enables the Kirschner wire to withstand greater tension and pressure during surgery, thereby ensuring stable fixation of the fracture site. This high strength and hardness also ensures that the Kirschner wire is not easy to deform or break after long-term use, thereby improving the success rate of surgery and the patient's rehabilitation effect;

[0026] Stainless steel has excellent corrosion resistance and can resist erosion by a variety of chemicals. In arthroscopic surgery, the Kirschner wire needs to be exposed to the patient's internal environment for a long time, so it must have good corrosion resistance to prevent rust or corrosion. Stainless steel can meet this requirement and ensure the safety and reliability of the Kirschner wire during surgery.

[0027] Medical stainless steel has good biocompatibility and good compatibility with human tissues. It is not easy to cause rejection or infection. This allows the Kirschner wire to be safely implanted in the patient's body during surgery and maintain a stable fixation effect after surgery. At the same time, stainless steel is also convenient for doctors to operate and adjust during surgery, which improves the flexibility and accuracy of the surgery.

[0028] Stainless steel is easy to process and manufacture, and can meet the needs of different specifications and shapes. This allows the Kirschner wire to be customized according to the patient's specific situation to ensure the best fixation effect and surgical effect. At the same time, stainless steel also makes it easier for doctors to perform cutting, bending and other operations during surgery, improving the efficiency and success rate of the operation.

[0029] Compared with other materials such as titanium alloy, the cost of stainless steel is relatively low, which makes the arthroscopic Kirschner wire retractor more affordable and reduces the financial burden on patients. At the same time, stainless steel is also easy to produce and use on a large scale, increasing the popularity and accessibility of medical devices.

[0030] Preferably, the inner wall of the U-shaped groove is integrally connected to the two rotating shafts.

[0031] It should be noted that: the inner wall of the circular chute is provided with a circular magnetic strip, the outer wall of the rotating shaft is provided with a mounting magnetic strip, and the circular magnetic strip and the mounting magnetic strip are arranged to attract each other with corresponding opposite poles.

[0032] By setting up the above technical solution, utilizing the effect of the circular magnetic strip and the installation magnetic strip, the rotating shaft can be limited in rotation after rotation, avoiding the rotation shaking of the positioning sleeve, thereby improving the rotation use effect of the positioning sleeve.

[0033] A method for using an arthroscopic Kirschner wire retractor, comprising:

[0034] Step 1: During the operation, first find the avulsed fracture fragment of the lateral malleolus under arthroscopy. At this time, the positioning sleeve is in a vertical state, and the retractor is inserted into the patient's ankle joint through the surgical incision A.

[0035] Step 2: Use an electric drill to insert the guide needle percutaneously, turn the positioning sleeve to make it rotate, so that the positioning sleeve is in a horizontal state, insert the guide needle into the internal through hole of the positioning sleeve, make the guide needle pass through the interior of the positioning sleeve, and use an electric drill to insert the guide needle into the patient's fracture fragment;

[0036] Step 3: Pull the pull ring to reposition the fracture fragment to a satisfactory position, then use an electric drill to completely penetrate the fracture fragment with the guide wire and fix it to the main bone fragment.

[0037] Step 4: Make a small incision B at the place where the guide needle enters the skin, insert the threader, and let the end of the threader pass through incision A. Pass the two pull ropes into the threader, pull the end of the threader to make the two pull ropes pass through incision B, pull the two traction ropes, and make the two = rotating shafts slide along the square slide. When sliding to the end of the square slide, the U-shaped groove is separated from the positioning sleeve, pull the pull ring, remove the long handle and U-shaped groove, and then insert the threader from incision A, and let the end of the threader pass through incision B. Pass the traction rope into the threader, pull the end of the threader, and let the two pull ropes pass through incision A.

[0038] Step 5: When removing the positioning sleeve, rotate the positioning sleeve with the guide needle as the axis. When the positioning sleeve rotates to the position, pull the traction rope to separate the positioning sleeve from the guide needle. Continue to pull the traction rope to remove the positioning sleeve from the small surgical incision.

[0039] Compared with the prior art, the present invention has the following beneficial effects:

[0040] Through the role of the limiting traction mechanism and based on the role of the positioning sleeve, it is convenient for the staff to insert the guide needle into the patient's fracture fragment, and the positioning sleeve is integrated with the long handle and the pull ring, which is convenient for the staff to use the traction device, thereby improving the staff's reduction and fixation treatment effect on the patient's fracture fragment, and when the electric drill drives the guide needle to rotate, it avoids slippage of the guide needle and difficulty in reducing the avulsed fracture fragment, thereby shortening the operation time accordingly and reducing ischemia-reperfusion injury of the affected limb.

[0041] The long handle, pull ring and positioning sleeve are made of stainless steel. Compared with other materials such as titanium alloy, the cost of stainless steel is relatively low. This makes the arthroscopic Kirschner wire retractor more affordable and reduces the financial burden on patients. At the same time, stainless steel is also easy to produce and use on a large scale, which increases the popularity and accessibility of medical devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 This is a structural diagram of the positioning casing level of the present invention;

[0043] Figure 2 It is a top view of the structure of the present invention;

[0044] Figure 3 For the present invention Figure 2 The enlarged structural diagram at A;

[0045] Figure 4 This is a structural diagram of the vertical positioning sleeve of the present invention;

[0046] Figure 5 It is a front structural diagram of the present invention.

[0047] In the figure: 1. long handle; 2. pull ring; 3. U-shaped groove; 301. rotating shaft; 302. positioning sleeve; 303. circular slide groove; 304. square slide groove; 305. traction rope; 4. guide needle. DETAILED DESCRIPTION

[0048] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0049] like Figure 1-5As shown, the arthroscopic Kirschner wire retractor comprises a long handle 1 and a guide needle 4, a pull ring 2 is fixedly connected to the bottom of the long handle 1, and also comprises: a limiting retracting mechanism, which is used to limit the use of the retracted guide needle 4, and the limiting retracting mechanism is located at the end of the long handle 1, and the limiting retracting mechanism comprises a U-shaped groove 3 and a positioning sleeve 302 opened at the top of the long handle 1, both sides of the inner wall of the U-shaped groove 3 are rotatably connected with a rotating shaft 301, the outer wall of the positioning sleeve 302 is provided with a circular sliding groove 303, the outer wall of the positioning sleeve 302 is provided with two square sliding grooves 304, and both sides of one end of the positioning sleeve 302 are connected with a traction rope 305;

[0050] The present invention further specifically describes that a through hole is opened inside the positioning sleeve 302, and the outer wall of the guide pin 4 and the inner wall of the through hole are slidably fitted. The positioning sleeve 302 is located between the two rotating shafts 301, and the square slide groove 304 passes through the circular slide groove 303. The two square slide grooves 304 are symmetrically arranged, and the ends of the square slide grooves 304 extend to the ends of the outer wall of the positioning sleeve 302. The two square slide grooves 304 are correspondingly arranged with the two rotating shafts 301, and the outer wall of the rotating shaft 301 and the inner wall of the square slide groove 304 are slidably fitted. The positioning sleeve 302 is rotated to a vertical state, and its top extends to the outside of the U-shaped groove 3. The positioning sleeve 302 is rotated to a horizontal state, and its two sides extend to the outside of the U-shaped groove 3. The two traction ropes 305 are symmetrically arranged;

[0051] As can be seen from the above, during the operation, the avulsed fracture fragment of the lateral malleolus is first found under the arthroscopy. At this time, the positioning sleeve 302 is in a vertical state. The retractor is inserted into the patient's ankle joint through the surgical incision, and the guide needle 4 is inserted percutaneously using an electric drill. The positioning sleeve 302 is moved to rotate so that the positioning sleeve 302 is in a horizontal state, and the guide needle 4 is inserted into the internal through hole of the positioning sleeve 302 so that the guide needle 4 passes through the interior of the positioning sleeve 302. The guide needle 4 is inserted into the interior of the patient's fracture fragment using an electric drill; after pulling the pull ring 2 and resetting the fracture fragment to a satisfactory position, the guide needle 4 is completely penetrated through the fracture fragment by the electric drill to fix it to the main bone fragment. A small incision B is made at the place where the guide needle 4 enters the skin, and a threader is inserted, and the end of the threader passes through the incision A. The traction rope 305 is inserted into the threader, and the tail end of the threader is pulled to make the traction rope 305 pass through the incision B. The traction rope 305 is pulled to make the two rotating shafts 301 slide along the square slide groove 304. When sliding to the end of the square slide groove 304, the U-shaped groove 3 is separated from the positioning sleeve 302. The pull ring 2 is pulled to take out the long handle 1 and the U-shaped groove 3, and then the threader is inserted from the incision A, and the end of the threader passes through the incision B. The traction rope 305 is inserted into the threader, and the tail end of the threader is pulled to make the two ropes pass through the incision A.

[0052] When removing the positioning sleeve 302, the positioning sleeve 302 is rotated with the guide needle 4 as the axis. When the positioning sleeve 302 is rotated to the position of the circular slide groove 303, the traction rope 305 is pulled to separate the positioning sleeve 302 from the guide needle 4. The traction rope 305 is continued to be pulled to remove the positioning sleeve 302 from the small surgical incision.

[0053] The present invention further specifically describes that the long handle 1, the pull ring 2 and the positioning sleeve 302 are all made of stainless steel;

[0054] As can be seen from the above, it should be noted that the stainless steel material of the long handle 1, the pull ring 2 and the positioning sleeve 302 is medically set;

[0055] The long handle 1, the pull ring 2 and the positioning sleeve 302 are made of stainless steel, which has the following advantages:

[0056] Stainless steel has high strength and hardness, which enables the Kirschner wire to withstand greater tension and pressure during surgery, thereby ensuring stable fixation of the fracture site. This high strength and hardness also ensures that the Kirschner wire is not easy to deform or break after long-term use, thereby improving the success rate of surgery and the patient's rehabilitation effect;

[0057] Stainless steel has excellent corrosion resistance and can resist erosion by a variety of chemicals. In arthroscopic surgery, the Kirschner wire needs to be exposed to the patient's internal environment for a long time, so it must have good corrosion resistance to prevent rust or corrosion. Stainless steel can meet this requirement and ensure the safety and reliability of the Kirschner wire during surgery.

[0058] Medical stainless steel has good biocompatibility and good compatibility with human tissues. It is not easy to cause rejection or infection. This allows the Kirschner wire to be safely implanted in the patient's body during surgery and maintain a stable fixation effect after surgery. At the same time, stainless steel is also convenient for doctors to operate and adjust during surgery, which improves the flexibility and accuracy of the surgery.

[0059] Stainless steel is easy to process and manufacture, and can meet the needs of different specifications and shapes. This allows the Kirschner wire to be customized according to the patient's specific situation to ensure the best fixation effect and surgical effect. At the same time, stainless steel also makes it easier for doctors to perform cutting, bending and other operations during surgery, improving the efficiency and success rate of the operation.

[0060] Compared with other materials such as titanium alloy, the cost of stainless steel is relatively low, which makes the arthroscopic Kirschner wire retractor more affordable and reduces the financial burden on patients. At the same time, stainless steel is also easy to produce and use on a large scale, increasing the popularity and accessibility of medical devices.

[0061] The present invention further specifically describes that the inner wall of the U-shaped groove 3 is integrally connected to the two rotating shafts 301, the end of the square slide groove 304 extends to the end of the outer wall of the positioning sleeve 302, the inner wall of the circular slide groove 303 is provided with a circular magnetic strip, and the outer wall of the rotating shaft 301 is provided with an installation magnetic strip, and the circular magnetic strip and the installation magnetic strip are arranged with corresponding opposite poles to attract each other.

[0062] As can be seen from the above, by utilizing the function of the circular magnetic strip and the mounting magnetic strip, the rotating shaft 301 can be limited in rotation, thereby preventing the positioning sleeve 302 from rotating and shaking, thereby improving the rotation effect of the positioning sleeve 302;

[0063] Specifically, one end of the rotating shaft 301 located inside the circular groove 303 is spherical, and the outer wall of the spherical shape is slidingly fitted with the inner walls of the circular groove 303 and the square groove 304, thereby improving the stability of the sliding between the end of the rotating shaft 301 and the inner walls of the circular groove 303 and the square groove 304, and avoiding the rotating shaft 301 from falling off.

[0064] It should be noted that the guide needle 4 is a type of Kirschner wire or guide needle, and the staff can select and use it according to their needs.

[0065] A method for using an arthroscopic Kirschner wire retractor, comprising:

[0066] Step 1: During the operation, first find the avulsed fracture fragment of the lateral malleolus under the arthroscopy. At this time, the positioning sleeve 302 is in a vertical state, and the retractor is inserted into the patient's ankle joint through the surgical incision A.

[0067] Step 2: Use an electric drill to insert the guide needle 4 percutaneously, move the positioning sleeve 302 to rotate it, so that the positioning sleeve 302 is in a horizontal state, insert the guide needle 4 into the internal through hole of the positioning sleeve 302, so that the guide needle 4 passes through the interior of the positioning sleeve 302, and use an electric drill to insert the guide needle 4 into the patient's fracture fragment;

[0068] Step 3: After pulling the pull ring 2 and resetting the fracture fragment to a satisfactory position, the guide needle 4 is completely penetrated through the fracture fragment by an electric drill to fix it to the main bone fragment.

[0069] Step 4: Make a small incision B at the place where the guide needle 4 enters the skin, insert the threader, and let the end of the threader pass through the incision A. Pass the two pull ropes into the threader, pull the end of the threader to make the two pull ropes pass through the incision B, pull the two traction ropes 305, and make the two = rotating shafts 301 slide along the square slide 304. When sliding to the end of the square slide 304, the U-shaped groove 3 is separated from the positioning sleeve 302, pull the pull ring 2, take out the long handle 1 and the U-shaped groove 3, and then insert the threader from the incision A, and let the end of the threader pass through the incision B. Pass the traction rope 305 into the threader, pull the end of the threader, and let the two pull ropes pass through the incision A.

[0070] Step 5: When removing the positioning sleeve 302, rotate the positioning sleeve 302 with the guide needle 4 as the axis. When the positioning sleeve 302 rotates to the position of the circular slide groove 303, pull the traction rope 305 to separate the positioning sleeve 302 from the guide needle 4. Continue to pull the traction rope 305 to remove the positioning sleeve 302 from the small surgical incision.

[0071] Furthermore, the present design application is applied to inserting a guide needle 4 into a patient's fracture fragment. Based on the function of the positioning sleeve 302, it is convenient for the staff to insert the guide needle 4 into the interior of the patient's fracture fragment. The positioning sleeve 302 is integrated with the long handle 1 and the pull ring 2, which is convenient for the staff to use the retractor, thereby improving the staff's reduction and fixation treatment effect on the patient's fracture fragment.

[0072] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 electric welding connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0073] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples, unless they are contradictory.

[0074] In the drawings of the embodiments disclosed in the present invention, only the structures related to the embodiments disclosed in the present invention are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other.

[0075] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. Arthroscopic Kirschner wire retractor, characterized in that: It comprises a long handle (1) and a guide needle (4), wherein the bottom of the long handle (1) is fixedly connected with a pull ring (2), and further comprises: A limiting pulling mechanism is used for limiting the position of a pulling guide needle (4), the limiting pulling mechanism is located at the end of the long handle (1), the limiting pulling mechanism comprises a U-shaped groove (3) and a positioning sleeve (302) opened at the top of the long handle (1), both sides of the inner wall of the U-shaped groove (3) are rotatably connected with a rotating shaft (301), the outer wall of the positioning sleeve (302) is opened with a circular sliding groove (303), the outer wall of the positioning sleeve (302) is opened with two square sliding grooves (304), and one end of the positioning sleeve (302) is connected with a traction rope (305) on both sides.

2. The arthroscopic Kirschner wire retractor according to claim 1, characterized in that: A through hole is provided inside the positioning sleeve (302), and the outer wall of the guide needle (4) and the inner wall of the through hole are slidably fitted.

3. The arthroscopic Kirschner wire retractor according to claim 1, characterized in that: The positioning sleeve (302) is located between the two rotating shafts (301), and the outer side wall of the rotating shaft (301) and the inner side wall of the circular sliding groove (303) are slidably fitted.

4. The arthroscopic Kirschner wire retractor according to claim 1, characterized in that: The square slide groove (304) passes through the circular slide groove (303), the two square slide grooves (304) are symmetrically arranged, and the ends of the square slide grooves (304) extend to the ends of the outer side walls of the positioning sleeve (302).

5. The arthroscopic Kirschner wire retractor according to claim 1, characterized in that: The two square slide grooves (304) are arranged correspondingly to the two rotating shafts (301), and the outer side walls of the rotating shafts (301) and the inner side walls of the square slide grooves (304) are arranged to slide and fit together.

6. The arthroscopic Kirschner wire retractor according to claim 1, characterized in that: The positioning sleeve (302) is rotated to a vertical state, and its top extends to the outside of the U-shaped groove (3).

7. The arthroscopic Kirschner wire retractor according to claim 1, characterized in that: The positioning sleeve (302) is rotated to a horizontal state, and both sides thereof extend to the outside of the U-shaped groove (3).

8. The arthroscopic Kirschner wire retractor according to claim 1, characterized in that: The two traction ropes (305) are symmetrically arranged, and the long handle (1), the pull ring (2) and the positioning sleeve (302) are all made of stainless steel.

9. The arthroscopic Kirschner wire retractor according to claim 1, characterized in that: The inner wall of the U-shaped groove (3) and the two rotating shafts (301) are integrally connected.

10. A method for using the arthroscopic Kirschner wire retractor according to any one of claims 1 to 9, characterized in that: Included are: Step 1: During the operation, first find the avulsed fracture fragment of the lateral malleolus under arthroscopy. At this time, the positioning sleeve (302) is in a vertical state, and the retractor is inserted into the patient's ankle joint through the surgical incision A. Step 2: Use an electric drill to insert the guide needle (4) percutaneously, move the positioning sleeve (302) to rotate it, so that the positioning sleeve (302) is in a horizontal state, insert the guide needle (4) into the internal through hole of the positioning sleeve (302), so that the guide needle (4) passes through the interior of the positioning sleeve (302), and use an electric drill to insert the guide needle (4) into the interior of the patient's fracture fragment; Step 3: After pulling the pull ring (2) and resetting the fracture fragment to a satisfactory position, the guide pin (4) is completely inserted through the fracture fragment by an electric drill to fix it to the main bone fragment. Step 4: Make a small incision B at the place where the guide needle (4) enters the skin, insert the threader, and let the end of the threader pass through the incision A. Pass the two pull ropes into the threader, pull the end of the threader to make the two pull ropes pass through the incision B, pull the two traction ropes (305), and make the two = rotating shafts (301) slide along the square slide groove (304). When sliding to the end of the square slide groove (304), the U-shaped groove (3) and the positioning sleeve (302) are separated, pull the pull ring (2), take out the long handle (1) and the U-shaped groove (3), and then insert the threader from the incision A, and let the end of the threader pass through the incision B. Pass the traction rope (305) into the threader, pull the end of the threader, and let the two pull ropes pass through the incision A. Step 5: When removing the positioning sleeve (302), the positioning sleeve (302) is rotated with the guide needle (4) as the axis. When the positioning sleeve (302) is rotated to the position of the circular slide groove (303), the traction rope (305) is pulled to separate the positioning sleeve (302) from the guide needle (4). The traction rope (305) is continued to be pulled to remove the positioning sleeve (302) from the small surgical incision.

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