Auxiliary retractor under arthroscope

Abstract

The invention relates to the technical field of medical instruments, in particular to an arthroscopic auxiliary retractor which comprises a retractor body, the retractor body comprises a retractor mouth, the retractor mouth is connected with a retractor head, a transition portion is connected to the lower portion of the retractor head, a lower portion is connected to the lower portion of the transition portion, and the lower portion of the transition portion is connected with an arthroscope. The tractor head is connected with the lower portion through a rear holding portion, a protruding and extending portion is arranged on the side, away from the rear holding portion, of the lower portion, the power cavity is communicated with the protruding and extending portion through a sealed air cavity, and needle driving assemblies are arranged at the two ends of the sealed air cavity. The air volume and the air pressure in the sealed space are kept unchanged, the sealing head compresses the air in the sealed air gun to drive the traction needle to move, mechanical movement of the traction needle is achieved, and compared with manual control, the distance of the traction needle penetrating into the human body is very easy to control and very stable.

Description

Technical Field

[0001] The present invention relates to the technical field of medical instruments, and more specifically to an arthroscopic auxiliary traction device. Background Art

[0002] In arthroscopic surgery, a clear field of vision is the key to a successful operation. Due to the complexity of the internal structure of the joint and space limitations, it is often difficult for doctors to obtain sufficient field of vision during surgery. Therefore, a tool is needed to assist doctors in expanding the surgical field of vision. Arthroscopic surgery requires precise operations in a small space. Due to the limitations of the internal space of the joint, it is often difficult for doctors to obtain sufficient operating space during surgery. The emergence of auxiliary traction devices can help doctors better expose the surgical site and provide sufficient space for surgical operations. Against the above background, arthroscopic auxiliary traction devices came into being.

[0003] A Chinese patent with patent publication number CN107307889B discloses an arthroscopic auxiliary tractor, which is designed in the medical field. In order to solve the problems that the raw materials and processing costs of the arthroscopic auxiliary tractor are high and the existing arthroscopic auxiliary retractor cannot be reused and cannot be thoroughly cleaned and disinfected, the arthroscopic auxiliary tractor is provided with a body, the body has a head end and a tail end, a support structure is swingably arranged at the head end of the body, a driving member is detachably arranged in the central cavity of the body, a needle-shaped structure is detachably connected to the driving member, the arthroscopic auxiliary tractor also includes a tail end member and a spring assembly, the tail end member is detachably clamped at the tail end of the driving member, the driving member is circumferentially fixed to the tail end member, the spring assembly is located in the central cavity of the body, is sleeved on the outer periphery of the driving member, and the spring assembly is pressed between the tail end member and the body.

[0004] The above structure has the following defects: during the operation, when adjusting the length of the needle-shaped structure inserted into the human body, manual operation is required, which places high requirements on the operator and is unstable. In addition, during the operation, if the operation requires controlling the arthroscopic auxiliary traction device not to move or shake, there is a great possibility of failure in manual operation, and the surgical field of view will shake, which is not conducive to the progress of the operation. Summary of the invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides an arthroscopic auxiliary traction device to solve the problems existing in the above-mentioned background technology.

[0006] The present invention provides the following technical solutions: an arthroscopic auxiliary tractor, comprising a tractor body, the tractor body comprising a tractor mouth, the tractor mouth is fixedly connected with a tractor head, the lower part of the tractor head is fixedly connected with a transition part, the lower part of the transition part is fixedly connected with a lower part, the tractor head and the lower part are also connected through a rear grip, a power chamber is arranged inside the tractor mouth, a convex part is arranged on a side of the lower part away from the rear grip, a sealed air chamber is passed through the power chamber and the convex part, needle drive components are arranged at both ends of the sealed air chamber, a rotating mechanism is fixedly connected below the lower part, and a lifting mechanism is fixedly connected below the rotating mechanism;

[0007] The needle drive assembly includes a third motor, the third motor is located inside the power chamber, the shaft end of the third motor is fixedly connected to a fourth gear, the lower part of the fourth gear is meshingly connected to a second rack, the lower end of the second rack is slidably connected to a guide rod, the end of the second rack close to the sealing air cavity is fixedly connected to one end of a sealing rod, the other end of the sealing rod is fixedly connected to a sealing head, the sealing head is sealingly and slidably connected to the upper end of the sealing air cavity, the lower end of the sealing air cavity is internally slidably and sealingly connected to a needle sealing block, the outer side of the needle sealing block is fixedly connected to a traction needle, a rebound spring is provided between the needle sealing block and the lower top of the sealing air cavity, and the traction needle is sleeved with a rebound spring;

[0008] Furthermore, a support assembly is sleeved on the protruding portion, a length measuring assembly is movably connected to one side of the second rack, a button group is provided on the surface of the lifting mechanism and the traction device body, and an opening and closing assembly is provided on the outer wall of the rear grip.

[0009] Furthermore, the lifting mechanism includes a sleeve, which is in a boss shape, with a large hole at the bottom of the sleeve and a small hole at the top of the sleeve, the large hole of the sleeve is connected to the small hole, a second motor is fixedly connected to the bottom of the large hole of the sleeve, a third gear is fixedly connected to the shaft end of the second motor, a first rack is meshedly connected to one side of the third gear, a circular push plate is fixedly connected to the top of the first rack, the circular push plate is slidingly and sealingly connected to the large hole of the sleeve, upper and lower rods are provided above the circular push plate, the upper and lower rods are T-shaped rods, the large ends of the upper and lower rods are sealingly and slidingly connected to the large hole of the sleeve, the small ends of the upper and lower rods are slidingly connected to the small hole of the sleeve, and power grooves are opened on the tops of the upper and lower rods.

[0010] Furthermore, the button group includes a left turn button, which is located on the surface of the rising mechanism; the surface of the rising mechanism is provided with a right turn button, an rising button, and a descending button; the outside of the transition part is provided with a block forward button, a block backward button, a ring forward button, and a ring backward button; the bottom of the tractor mouth is provided with a needle retraction button and a needle extension button.

[0011] Furthermore, the length measuring assembly includes a movable plate, which is trapezoidal in shape, and a vertical slider is fixedly connected to the side of the movable plate close to the needle driving assembly, and a vertical concave guide groove is slidably connected to the other side of the slider, and a top column is provided below the movable plate, and the bottom of the top column is fixedly connected to the bottom of the power chamber, and the top of the top column is in an arc shape, and the lower side of the movable plate is always tangent to the vertex of the arc portion of the top column, and a scale column is provided above the movable plate, and the bottom of the scale column is in an arc shape, and the upper side of the movable plate is always tangent to the vertex of the arc portion of the scale column, and the scale column is vertically slidably connected to the top of the power chamber.

[0012] Furthermore, the length measuring assembly includes a movable plate, which is trapezoidal in shape, and a vertical slider is fixedly connected to the side of the movable plate close to the needle driving assembly, and a vertical concave guide groove is slidably connected to the other side of the slider, and a top column is provided below the movable plate, and the bottom of the top column is fixedly connected to the bottom of the power chamber, and the top of the top column is in an arc shape, and the lower side of the movable plate is always tangent to the vertex of the arc portion of the top column, and a scale column is provided above the movable plate, and the bottom of the scale column is in an arc shape, and the upper side of the movable plate is always tangent to the vertex of the arc portion of the scale column, and the scale column is vertically slidably connected to the top of the power chamber.

[0013] Furthermore, the opening and closing assembly includes a push button, the interior of the push button is fixedly connected to a top head, the bottom of the top head is fixedly connected to a push rod, a compression spring is sleeved on the push rod, the compression spring is located between the top head and the outer wall of the rear grip, the bottom end of the push rod is fixedly connected to a dynamic sealing plate, the dynamic sealing plate is slidably and sealingly connected to an outer shell, the outer circular wall of the outer shell is fitted with the inner circular wall of the sealed air cavity, the dynamic sealing plate extends to the inner wall of the sealed air cavity, and the sealed air cavity is divided into two airtight upper and lower sections.

[0014] Furthermore, the rotating mechanism includes a first motor, which is fixed inside the power slot, and the shaft end of the first motor is fixedly connected to a first gear, one side of the first gear is meshingly connected to a second gear, the middle key of the second gear is connected to a rotating shaft, one end of the rotating shaft is rotatably connected to a rotating rod, and the other end of the rotating rod is fixed to the bottom of the lower part.

[0015] Technical effects and advantages of the present invention:

[0016] 1. The present invention is provided with a needle drive assembly, which is beneficial to maintaining the gas volume and air pressure in the sealed space unchanged, and utilizing the sealing head to compress the air inside the sealed air gun to drive the traction needle to move, thereby realizing mechanical movement of the traction needle. Compared with manual control, the distance that the traction needle penetrates into the human body is very easy to control and is very stable.

[0017] 2. The present invention is provided with a lifting mechanism, which is beneficial to the weight of the auxiliary traction device under arthroscopy, so that the center of gravity is lowered and it becomes very stable, and it can maintain stability during the operation, so that the traction needle does not move or shake, and the stability of the surgical field is maintained.

[0018] 3. The present invention is provided with a length measuring component, which is beneficial to utilizing the volume in the sealed space to remain unchanged, and linking the distance the traction needle is extended with the distance the second rack moves, so that the doctor can monitor the length of the traction needle inserted into the human body in real time. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0020] Figure 2 It is a cross-sectional view of the overall structure of the present invention.

[0021] Figure 3 It is a schematic structural diagram of the length measuring assembly of the present invention.

[0022] Figure 4 It is a schematic diagram of the structure of the length measuring assembly when the movable plate of the present invention moves to a certain position.

[0023] Figure 5 For the present invention Figure 2 A schematic diagram of the enlarged structure at point a.

[0024] Figure 6 For the present invention Figure 2 The enlarged structural diagram at point b is shown in FIG.

[0025] Figure 7 For the present invention Figure 2 The enlarged structural diagram at c is shown in FIG.

[0026] Figure 8 For the present invention Figure 2 The enlarged structural diagram at point d is shown.

[0027] The accompanying drawings are marked as follows: 1. tractor body; 101. tractor mouth; 102. tractor head; 103. transition part; 104. rear grip; 105. lower part; 106. protruding part; 107. power chamber; 108. sealed air chamber; 2. rotating mechanism; 201. rotating rod; 202. first motor; 203. first gear; 204. second gear; 205. rotating shaft; 3. rising mechanism; 301. sleeve; 302. second motor; 303. third gear; 304. first rack; 305. round push plate; 306. upper and lower rods; 307. power slot; 4. supporting assembly; 401. first cylinder; 402. moving block; 403. hinged rod; 404. supporting block; 405. moving ring; 406. second cylinder; 407. shock-absorbing spring; 5. needle drive assembly; 501 , the third motor; 502, the fourth gear; 503, the second rack; 504, the guide rod; 505, the sealing rod; 506, the sealing head; 507, the rebound spring; 508, the traction needle; 509, the needle sealing block; 6, the length measuring component; 601, the moving plate; 602, the slider; 603, the guide groove; 604, the top column; 605, the scale column; 7, the opening and closing component; 701, the pressing key; 702, the top head; 703, the compression spring; 704, the push rod; 705, the housing; 706, the dynamic sealing plate; 8, the button group; 801, the left turn button; 802, the right turn button; 803, the rising button; 804, the descending button; 805, the needle retracting button; 806, the needle extending button; 807, the block forward button; 808, the block backward button; 809, the ring forward button; 8010, the ring backward button. DETAILED DESCRIPTION

[0028] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention. In addition, the forms of the various structures recorded in the following embodiments are merely illustrative. The arthroscopic auxiliary traction device involved in the present invention is not limited to the various structures recorded in the following embodiments. All other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0029] Reference Figure 1The present invention provides an arthroscopic auxiliary tractor, comprising a tractor body 1, the tractor body 1 comprising a tractor mouth 101, the tractor mouth 101 is fixedly connected with a tractor head 102, a transition portion 103 is fixedly connected below the tractor head 102, a lower portion 105 is fixedly connected below the transition portion 103, the tractor head 102 and the lower portion 105 are also connected via a rear grip 104, a power chamber 107 is arranged inside the tractor mouth 101, a convex portion 106 is arranged on a side of the lower portion 105 away from the rear grip 104, the power chamber 107 and the convex portion 106 are connected via a sealed air chamber 108, needle drive assemblies 5 are arranged at both ends of the sealed air chamber 108, a rotating mechanism 2 is fixedly connected below the lower portion 105, and a lifting mechanism 3 is fixedly connected below the rotating mechanism 2;

[0030] The needle drive assembly 5 includes a third motor 501, which is located inside the power chamber 107. The shaft end of the third motor 501 is fixedly connected with a fourth gear 502, and the lower part of the fourth gear 502 is meshedly connected with a second rack 503. The lower end of the second rack 503 is slidably connected with a guide rod 504, and one end of the second rack 503 close to the sealed air chamber 108 is fixedly connected with one end of a sealing rod 505, and the other end of the sealing rod 505 is fixedly connected with a sealing head 506. The sealing head 506 is sealingly and slidably connected to the upper end of the sealed air chamber 108, and the lower end of the sealed air chamber 108 is internally slidably and sealedly connected with a needle sealing block 509, and the outer side of the needle sealing block 509 is fixedly connected with a traction needle 508. A rebound spring 507 is provided between the needle sealing block 509 and the lower top of the sealed air chamber 108, and the traction needle 508 is sleeved with a rebound spring 507;

[0031] In this embodiment, it should be specifically explained that the moving block 402 and the shock absorbing spring 407 are connected to an external air pump to provide sufficient gas during operation.

[0032] The main difference between this embodiment and the prior art is that in this embodiment, the volume of gas in the sealed space remains unchanged, and the movement of the sealing head 506 drives the movement of the gas, so that the gas drives the traction needle 508 to move, so as to achieve the displacement of the traction needle 508, and the weight of the lifting mechanism 3 and the rotating mechanism 2 itself is used to fix the traction device body 1, specifically the rotating mechanism 2, the lifting mechanism 3, and the needle driving assembly 5;

[0033] The above structure is the main structure of this embodiment, which solves the problem that the traction needle 508 remains stationary during the operation and the surgical field of view needs to be stable. The first motor 202 and the third motor 501 are existing structures. The specific structure and connection method of the first motor 202 and the third motor 501 are not described in detail in this embodiment.

[0034] Reference Figure 2The protruding portion 106 is sleeved with a support component 4, one side of the second rack 503 is movably connected with a length measuring component 6, the surfaces of the lifting mechanism 3 and the tractor body 1 are provided with a button group 8, the outer wall of the rear grip 104 is provided with an opening and closing component 7, the lifting mechanism 3 includes a sleeve 301, the sleeve 301 is in a boss shape, a large hole is opened at the bottom of the sleeve 301, a small hole is opened at the top of the sleeve 301, the large hole and the small hole are connected, the bottom of the large hole of the sleeve 301 is fixedly connected with a second motor 302, the shaft end of the second motor 302 is fixedly connected with a third gear 303, one side of the third gear 303 is meshedly connected with a first rack 304, the top of the first rack 304 is fixedly connected with a round push plate 305, the round push plate 305 and the large hole of the sleeve 301 slide Dynamic sealing connection, upper and lower rods 306 are provided above the circular push plate 305, and the upper and lower rods 306 are T-shaped rods. The large ends of the upper and lower rods 306 are sealed and slidably connected with the large hole of the sleeve 301, and the small ends of the upper and lower rods 306 are slidably connected with the small hole of the sleeve 301. A power groove 307 is opened at the top of the upper and lower rods 306. The button group 8 includes a left turn button 801, and the left turn button 801 is located on the surface of the rising mechanism 3. The surface of the rising mechanism 3 is provided with a right turn button 802, an rising button 803, and a descending button 804. The outside of the transition part 103 is provided with a block forward button 807, a block backward button 808, a ring forward button 809, and a ring backward button 8010. The bottom of the tractor nozzle 101 is provided with a needle retraction button 805 and a needle extension button 806.

[0035] In this embodiment, it should be specifically explained that: the second motor 302 rotates forward or reversely, driving the third gear 303 keyed thereto to rotate forward or reversely, driving the first rack 304 meshing with the third gear 303 to descend or ascend; when descending, the circular push plate 305 fixedly connected thereto is driven to descend, and the air pressure inside the sleeve 301 is reduced. Under the action of atmospheric pressure, the upper and lower rods 306 descend, driving the entire arthroscopic auxiliary tractor to descend; when ascending, the circular push plate 305 fixedly connected thereto is driven to ascend, and the air pressure inside the sleeve 301 is increased. Under the action of atmospheric pressure, the upper and lower rods 306 ascend, driving the entire arthroscopic auxiliary tractor to ascend; the ascending mechanism 3 is made of heavy metal, which can play a role in stabilizing the arthroscopic auxiliary tractor as a whole during the operation of the arthroscopic auxiliary tractor.

[0036] Reference Figure 3 and Figure 4The length measuring component 6 includes a moving plate 601, which is trapezoidal in shape. A vertical slider 602 is fixedly connected to the side of the moving plate 601 close to the needle driving component 5, and a vertical concave guide groove 603 is slidably connected to the other side of the slider 602. A top column 604 is provided below the moving plate 601, and the bottom of the top column 604 is fixedly connected to the bottom of the power chamber 107. The top of the top column 604 is in an arc shape, and the lower side of the moving plate 601 is always tangent to the vertex of the arc portion of the top column 604. A scale column 605 is provided above the moving plate 601, and the bottom of the scale column 605 is in an arc shape. The upper side of the moving plate 601 is always tangent to the vertex of the arc portion of the scale column 605, and the scale column 605 is vertically slidably connected to the top of the power chamber 107.

[0037] In this embodiment, it is necessary to specifically explain that: when the second rack 503 moves toward the direction close to the sealed air cavity 108, it drives the movable plate 601 to move toward the direction close to the sealed air cavity 108, and the movable plate 601 gradually rises during the contact process of the top column 604 and the guidance of the guide groove 603, and the scale column 605 also gradually rises during the contact process with the movable plate 601. The scale displayed on the scale column 605 is the elongation of the traction needle 508. From the scale column 605, the doctor can understand whether the length of the traction needle 508 penetrating into the human body is appropriate. When the operation is completed, the operator presses the compression needle button 805, and the second rack 503 retreats in the direction away from the sealed air cavity 108, driving the movable plate 601 to retreat, and the scale column 605 descends.

[0038] Reference Figure 5 and Figure 6 The support assembly 4 includes a first cylinder 401, the bottom of the first cylinder 401 is fixed to the outer side of the protruding portion 106, the top of the piston rod of the first cylinder 401 is fixedly connected with a moving block 402, the moving block 402 is slidably connected to the protruding portion 106, a circumferential array on the side of the moving block 402 away from the rear grip 104 is hinged with a plurality of hinged rods 403, the other end of the hinged rod 403 is hinged to the side of the support block 404, the bottom of the support block 404 is rotatably connected with a moving ring 405, the moving ring 405 is slidably connected to the protruding portion 106, the side of the moving ring 405 away from the rear grip 104 is fixedly connected to the piston rod of the second cylinder 406, the cylinder body of the second cylinder 406 is fixed to the outer side of the protruding portion 106, the side of the moving block 402 close to the rear grip 104 is fixedly connected with one end of a shock-absorbing spring 407, and the other end of the shock-absorbing spring 407 resists the outer side of the lower portion 105.

[0039] In this embodiment, it should be specifically explained that: when the doctor needs to stretch the muscle tissue, the second cylinder 406 pulls the movable ring 405 to move to a suitable position in the direction away from the rear grip 104. At this time, the support block 404 gradually contracts under the tension of the hinged rod 403, and the first cylinder 401 can also push the movable block 402 to move in the direction away from the rear grip 104. At this time, the support block 404 gradually opens under the support of the hinged rod 403 until the muscle tissue is stretched to expose the internal field of vision. The angle of the muscle stretched by the support block 404 can be adjusted by adjusting the distance between the movable block 402 and the movable ring 405. When the auxiliary traction device under arthroscopy vibrates unexpectedly, the vibration can be eliminated by the shock-absorbing spring 407.

[0040] Reference Figure 7 The opening and closing component 7 includes a push button 701, the interior of the push button 701 is fixedly connected with a top head 702, the bottom of the top head 702 is fixedly connected with a push rod 704, a compression spring 703 is sleeved on the push rod 704, the compression spring 703 is located between the top head 702 and the outer wall of the rear grip 104, the bottom end of the push rod 704 is fixedly connected with a dynamic sealing plate 706, the dynamic sealing plate 706 is slidingly and sealingly connected with an outer shell 705, the outer circular wall of the outer shell 705 is in contact with the inner circular wall of the sealed air cavity 108, and when the dynamic sealing plate 706 extends to the inner wall of the sealed air cavity 108, the sealed air cavity 108 can be divided into two airtight upper and lower sections.

[0041] In this embodiment, it should be specifically explained that: when the traction needle 508 is inserted into the appropriate position, the operator presses the push button 701 to the deepest position, and the top head 702 compresses the compression spring 703 under the pressure of the push button 701, and causes the push rod 704 to press the dynamic sealing plate 706 to the side wall of the sealed air cavity 108, thereby blocking the continued flow of airflow caused by the inertial rotation generated after the fourth gear 502 is powered off, so that the traction needle 508 can penetrate the human body more accurately. When the operator senses that the inertia of the fourth gear 502 disappears, he stops pressing the push button 701, and the dynamic sealing plate 706 returns to its original position under the action of the elastic restoring force of the compression spring 703, and the inside of the sealed air cavity 108 is connected.

[0042] Reference Figure 8 The rotating mechanism 2 includes a first motor 202, which is fixed inside the power slot 307. The shaft end of the first motor 202 is fixedly connected to the first gear 203, one side of the first gear 203 is meshedly connected to the second gear 204, the middle key of the second gear 204 is connected to the rotating shaft 205, one end of the rotating shaft 205 is rotatably connected to the rotating rod 201, and the other end of the rotating rod 201 is fixed to the bottom of the lower part 105.

[0043] In this embodiment, it is necessary to explain in detail: the angle of the traction needle 508 is subsequently adjusted. When the traction needle 508 is located at the left or right end of the patient's surgical joint, the operator presses the right-turn button 802 or the left-turn button 801, and the rotating shaft of the first motor 202 rotates forward or reversely, driving the first gear 203 keyed thereto to rotate forward or reversely, driving the second gear 204 meshing with the first gear 203 to rotate, and the second gear 204 drives the rotating shaft 205 to rotate, thereby driving the rotating rod 201 to turn right or left until the angle of the traction needle 508 is accurate.

[0044] Working principle of the present invention:

[0045] The main problem solved by this embodiment is: utilizing the constant gas volume and pressure in the sealed space, the movement of the sealing head 506 drives the movement of the gas, and the gas drives the traction needle 508 to move, thereby achieving the displacement of the traction needle 508, and utilizing the weight of the lifting mechanism 3 and the rotating mechanism 2 to fix the traction device body 1, so as to achieve the requirement that the traction needle 508 remains stationary during the operation and the surgical field of view is stable.

[0046] The specific steps are as follows:

[0047] First, the patient arrives at the surgical position and lies down, and the arthroscopic auxiliary traction device is fixed on the operating table not far from the joint surgery, and then the height of the traction needle 508 is adjusted. When the position of the traction needle 508 is higher or lower than the surgical joint of the patient, the operator presses the descending button 804 or the ascending button 803, and the second motor 302 rotates forward or reversely, driving the third gear 303 connected to the key to rotate forward or reversely, driving the first rack 304 meshing with the third gear 303 to descend or ascend. When descending, the circular push plate 305 fixedly connected thereto is driven to descend, and the air pressure inside the sleeve 301 is reduced. Under the action of atmospheric pressure, the upper and lower rods 306 descend, driving the entire arthroscopic auxiliary traction device to descend, and the traction needle 508 also descends accordingly. When ascending, the circular push plate 305 fixedly connected thereto is driven to ascend, and the air pressure inside the sleeve 301 is increased. Under the action of atmospheric pressure, the upper and lower rods 306 ascend, driving the entire arthroscopic auxiliary traction device to ascend, and the traction needle 508 also ascends accordingly, until the height of the traction needle 508 is accurate;

[0048] Then, the angle of the traction needle 508 is adjusted. When the traction needle 508 is located at the left or right end of the patient's surgical joint, the operator presses the right-turn button 802 or the left-turn button 801, and the rotating shaft of the first motor 202 rotates forward or reversely, driving the first gear 203 keyed thereto to rotate forward or reversely, driving the second gear 204 meshing with the first gear 203 to rotate, and the second gear 204 drives the rotating shaft 205 to rotate, thereby driving the rotating rod 201 to rotate right or left, until the angle of the traction needle 508 is accurate;

[0049] At the beginning of the operation, the operator presses the needle extension button 806, the third motor 501 is powered on and rotates forward, driving the fourth gear 502 to rotate, and the fourth gear 502 drives the second rack 503 to move toward the sealed air cavity 108, the sealing head 506 squeezes the air inside the sealed air cavity 108, the air pressure inside the sealed air cavity 108 increases, the air squeezes the needle sealing block 509, drives the traction needle 508 to pierce the patient's body and compresses the rebound spring 507, when the second rack 503 moves toward the sealed air cavity 108, The movable plate 601 is driven to move toward the sealed air cavity 108. The movable plate 601 gradually rises in the contact process of the top column 604 and under the guidance of the guide groove 603. The scale column 605 also gradually rises in the contact process with the movable plate 601. The scale displayed on the scale column 605 is the elongation of the traction needle 508. From the scale column 605, the doctor can understand whether the length of the traction needle 508 to penetrate into the human body is appropriate. When the traction needle 508 is inserted to the appropriate position, the operator presses the push button 701 to the deepest position, and the top head 702 presses the push button 701 to the deepest position. The compression spring 703 is compressed by pressing the key 701, and the push rod 704 presses the dynamic sealing plate 706 to the side wall of the sealed air cavity 108, thereby blocking the continued flow of air caused by the inertial rotation of the fourth gear 502 after the power is turned off, so that the traction needle 508 can penetrate the human body more accurately. The operator then quickly stops pressing the needle extension button 806, the third motor 501 stops rotating, the second rack 503 stops moving, and the traction needle 508 stops moving. When the operator senses that the inertia of the fourth gear 502 disappears, he stops pressing. By pressing the key 701, the dynamic sealing plate 706 returns to its original position under the elastic restoring force of the compression spring 703, and the inside of the sealed air cavity 108 is penetrated. When the traction needle 508 is inserted too deeply, it is necessary to reduce the insertion depth of the traction needle 508. Similarly, the operator presses the needle retraction button 805, and the third motor 501 is energized to rotate in the reverse direction, driving the second rack 503 to move away from the sealed air cavity 108. The air pressure inside the sealed air cavity 108 becomes smaller, and the traction needle 508 shrinks under the elastic force of the rebound spring 507 and the air pressure.

[0050] When the doctor needs to stretch the muscle tissue, the operator presses the ring forward button 809, and the second cylinder 406 pulls the moving ring 405 to move to a suitable position in the direction away from the rear grip 104. At this time, the support block 404 gradually shrinks under the tension of the hinge rod 403, and then the operator presses the block forward button 807, and the first cylinder 401 pushes the moving block 402 to move in the direction away from the rear grip 104. At this time, the support block 404 gradually opens under the support of the hinge rod 403 until the muscle tissue is stretched to expose the internal field of view. The angle of the muscle stretched by the support block 404 can be adjusted by adjusting the distance between the moving block 402 and the moving ring 405, and then the arthroscopic auxiliary traction device is moved to pull the muscle through the traction needle 508 to widen the field of view, and then the arthroscopic auxiliary traction device is fixed on a horizontal workbench;

[0051] Similarly, when the operation is over, the operator presses the compression needle button 805, the second rack 503 retreats in the direction away from the sealed air cavity 108, drives the movable plate 601 to retreat, the scale column 605 drops, the air pressure inside the sealed air cavity 108 drops, and under the action of atmospheric pressure and the restoring force of the rebound spring 507, the traction needle 508 begins to retract out of the human body and return to its original position.

[0052] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An arthroscopic auxiliary traction device, comprising a traction device body (1), characterized in that: The tractor body (1) comprises a tractor nozzle (101), the tractor nozzle (101) is fixedly connected to a tractor head (102), a transition portion (103) is fixedly connected below the tractor head (102), a lower portion (105) is fixedly connected below the transition portion (103), the tractor head (102) and the lower portion (105) are also connected via a rear grip portion (104), a power chamber (107) is provided inside the tractor nozzle (101), a convex portion (106) is provided on a side of the lower portion (105) away from the rear grip portion (104), the power chamber (107) and the convex portion (106) are connected via a sealed air chamber (108), needle drive assemblies (5) are provided at both ends of the sealed air chamber (108), a rotating mechanism (2) is fixedly connected below the lower portion (105), and a lifting mechanism (3) is fixedly connected below the rotating mechanism (2); The needle drive assembly (5) comprises a third motor (501), the third motor (501) is located inside the power chamber (107), the shaft end of the third motor (501) is fixedly connected to a fourth gear (502), the lower part of the fourth gear (502) is meshingly connected to a second rack (503), the lower end of the second rack (503) is slidably connected to a guide rod (504), the end of the second rack (503) close to the sealing air chamber (108) is fixedly connected to one end of a sealing rod (505), and the sealing rod The other end of (505) is fixedly connected to a sealing head (506), the sealing head (506) is sealingly and slidably connected to the upper end of the sealed air cavity (108), the lower end of the sealed air cavity (108) is internally and slidably connected to a needle sealing block (509), the outer side of the needle sealing block (509) is fixedly connected to a traction needle (508), a rebound spring (507) is provided between the needle sealing block (509) and the lower top of the sealed air cavity (108), and the traction needle (508) is sleeved with a rebound spring (507); When the third motor (501) is energized, it rotates in the forward direction, driving the fourth gear (502) to rotate. The fourth gear (502) drives the second rack (503) to move in the direction close to the sealed air cavity (108). The sealing head (506) squeezes the air inside the sealed air cavity (108). The air pressure inside the sealed air cavity (108) increases. The gas squeezes the needle seal block (509) to drive the traction needle (508) to pierce into the patient's body and compress the rebound spring (507). If the traction needle (508) is inserted too deeply, it is necessary to reduce the insertion depth of the traction needle (508). Similarly, when the third motor (501) is energized, it rotates in the reverse direction, driving the second rack (503) to move in the direction away from the sealed air cavity (108). The air pressure inside the sealed air cavity (108) decreases, and the traction needle (508) contracts under the action of the rebound force of the rebound spring (507) and the air pressure.

2. The arthroscopic auxiliary traction device according to claim 1, characterized in that: A support assembly (4) is sleeved on the protruding portion (106), a length measuring assembly (6) is movably connected to one side of the second rack (503), a button group (8) is provided on the surface of the lifting mechanism (3) and the tractor body (1), and an opening and closing assembly (7) is provided on the outer wall of the rear grip portion (104).

3. The arthroscopic auxiliary traction device according to claim 2, characterized in that: The lifting mechanism (3) comprises a sleeve (301), the sleeve (301) is in the shape of a boss, a large hole is formed at the bottom of the sleeve (301), a small hole is formed at the top of the sleeve (301), the large hole of the sleeve (301) and the small hole are connected, a second motor (302) is fixedly connected to the bottom of the large hole of the sleeve (301), a third gear (303) is fixedly connected to the shaft end of the second motor (302), one side of the third gear (303) is meshedly connected to the first rack (304), and the third gear (303) is meshedly connected to the first rack (304). A round push plate (305) is fixedly connected to the top of a rack (304), and the round push plate (305) is slidably and sealingly connected to the large hole of the sleeve (301). Upper and lower rods (306) are arranged above the round push plate (305), and the upper and lower rods (306) are T-shaped rods. The large ends of the upper and lower rods (306) are slidably and sealingly connected to the large hole of the sleeve (301), and the small ends of the upper and lower rods (306) are slidably connected to the small hole of the sleeve (301). The top ends of the upper and lower rods (306) are provided with power grooves (307).

4. The arthroscopic auxiliary traction device according to claim 2, characterized in that: The button group (8) comprises a left-turn button (801), the left-turn button (801) being located on the surface of the ascending mechanism (3), the surface of the ascending mechanism (3) being provided with a right-turn button (802), an ascending button (803), and a descending button (804), the exterior of the transition portion (103) being provided with a block forward button (807), a block backward button (808), a ring forward button (809), and a ring backward button (8010), and the bottom of the tractor nozzle (101) being provided with a needle retracting button (805) and a needle extending button (806).

5. The arthroscopic auxiliary traction device according to claim 2, characterized in that: The length measuring assembly (6) comprises a moving plate (601), the moving plate (601) being in a trapezoidal shape, a side of the moving plate (601) close to the needle driving assembly (5) being fixedly connected to a vertical sliding block (602), the other side of the sliding block (602) being slidably connected to a vertical concave guide groove (603), a top column (604) being provided below the moving plate (601), the bottom of the top column (604) being in contact with the bottom of the power chamber (107), and a vertical concave guide groove (603) being provided on the other side of the sliding block (602). The top of the top column (604) fixedly connected to the top column (604) is in an arc shape, the lower side of the movable plate (601) is always tangent to the vertex of the arc portion of the top column (604), a scale column (605) is provided above the movable plate (601), the bottom of the scale column (605) is in an arc shape, the upper side of the movable plate (601) is always tangent to the vertex of the arc portion of the scale column (605), and the scale column (605) is vertically slidably connected to the top of the power chamber (107).

6. The arthroscopic auxiliary traction device according to claim 2, characterized in that: The support assembly (4) comprises a first cylinder (401), the cylinder bottom of the first cylinder (401) is fixed to the outside of the protruding portion (106), the top end of the piston rod of the first cylinder (401) is fixedly connected to a moving block (402), the moving block (402) is slidably connected to the protruding portion (106), a circular array on one side of the moving block (402) away from the rear grip portion (104) is hinged to a plurality of hinged rods (403), the other end of the hinged rod (403) is hinged to the side of the support block (404), and the support block (404) is connected to the support block (404). 4) is rotatably connected to the bottom of the movable ring (405), the movable ring (405) is slidably connected to the protruding portion (106), the side of the movable ring (405) away from the rear grip (104) is fixedly connected to the piston rod of the second cylinder (406), the cylinder body of the second cylinder (406) is fixed to the outside of the protruding portion (106), and the side of the movable block (402) close to the rear grip (104) is fixedly connected to one end of a shock-absorbing spring (407), and the other end of the shock-absorbing spring (407) resists the outside of the lower part (105).

7. The arthroscopic auxiliary traction device according to claim 2, characterized in that: The opening and closing assembly (7) comprises a push button (701), the interior of the push button (701) is fixedly connected to a top head (702), the bottom of the top head (702) is fixedly connected to a push rod (704), a compression spring (703) is sleeved on the push rod (704), the compression spring (703) is located between the top head (702) and the outer wall of the rear grip (104), the bottom end of the push rod (704) is fixedly connected to a dynamic sealing plate (706), the dynamic sealing plate (706) is slidably and sealingly connected to an outer shell (705), the outer circular wall of the outer shell (705) is in contact with the inner circular wall of the sealing air cavity (108), the dynamic sealing plate (706) extends to the inner wall of the sealing air cavity (108), and the sealing air cavity (108) is divided into two airtight upper and lower sections.

8. The arthroscopic auxiliary traction device according to claim 3, characterized in that: The rotating mechanism (2) comprises a first motor (202), the first motor (202) being fixed inside the power slot (307), the shaft end of the first motor (202) being fixedly connected to a first gear (203), one side of the first gear (203) being meshingly connected to a second gear (204), a middle key of the second gear (204) being connected to a rotating shaft (205), one end of the rotating shaft (205) being rotatably connected to a rotating rod (201), and the other end of the rotating rod (201) being fixed to the bottom of the lower part (105).

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