Coil spring type tissue traction device and tissue traction system

Abstract

The present invention relates to a coil spring type tissue tractor and a tissue traction system. The coil spring type tissue tractor of the present invention comprises a tractor body having a wire pulling channel for a wire to pass through, a coil spring is arranged on the tractor body, one end of the coil spring is used to connect with the wire, and the other end is connected with an operating member, the operating member is locked with the tractor body through a locking mechanism, the operating member can be rotated to pull the wire at one end thereof to move, thereby providing different magnitudes of pulling force, and the operating member is locked on the tractor body through the locking mechanism after being rotated to the right position, when in use, the rotating operating member can cause the coil spring to contract, thereby providing elastic pulling force to the wire connected to the other end of the coil spring, after being adjusted to the right position, the locking mechanism locks the operating member on the tractor body, thus providing elastic pulling force through the coil spring, thus avoiding large errors caused by relying on the doctor's experience and judgment, and being easy to use.

Description

Technical Field

[0001] The invention relates to a coil spring type tissue traction device and a tissue traction system. Background Art

[0002] When a patient is injured due to an unexpected accident, the wound at the injured part is too large, and it will heal slowly or not at all if it is bandaged and the skin's self-healing ability is used. If it is not suitable for skin or flap transplantation, external force is needed to pull the skin to heal due to its elasticity and extensibility. The instrument used in the traction process is a traction device, also called a retractor. The existing skin traction device is troublesome to pull due to its structural limitations and cannot meet the traction requirements of multiple schemes at the same time, so it has poor applicability. In addition, the existing traction device structure is complicated to operate. During the use and adjustment process, the doctor relies on the doctor's experience to judge the traction force, which has a large error. It is common for the patient to be injured due to excessive traction or the healing time is prolonged due to insufficient traction, which increases the patient's pain. Therefore, there is an urgent need for an easy-to-use skin tissue traction device. Summary of the invention

[0003] The present invention provides a tissue traction device to solve the problem that the existing tissue traction device is inconvenient to use; meanwhile, the present invention also provides a tissue traction system using the tissue traction device.

[0004] The coil spring type tissue retractor of the present invention adopts the following technical solution:

[0005] A coil spring type tissue tractor comprises a tractor body having a pull wire channel for passing a pull wire, the tractor body being provided with a coil spring, one end of the coil spring being used to connect with the pull wire and the other end being connected with an operating member, the operating member being locked in anti-rotation cooperation with the tractor body through a locking mechanism, and rotating the operating member can pull the pull wire at one end thereof to move, thereby providing pulling forces of different magnitudes, and after being rotated into place, the operating member is locked to the tractor body through the locking mechanism.

[0006] A winding wheel is rotatably mounted on the tractor body, and the coil spring is connected with the pulling wire through the winding wheel.

[0007] The operating member is an operating wheel that cooperates with the winding wheel set. One end of the coil spring is connected to the winding wheel, and the other end is connected to the operating wheel. An indicating structure for indicating the relative rotation position of the operating wheel and the winding wheel is provided between the operating wheel and the winding wheel.

[0008] The indicating structure includes an indicating scale arranged on one of the operating wheel and the winding wheel, and one of the operating wheel and the winding wheel is rotatably equipped with an indicating disk, and the other is provided with a toggle structure for toggling the indicating disk to rotate after the indicating disk is rotated by a set angle.

[0009] The winding wheel includes a winding portion for winding a wire and a mating wheel that cooperates with an operating wheel set. The indicating dial is rotatably arranged on the inner wall of the operating wheel. The dial structure is a dial column arranged on the mating wheel. The indicating scale is arranged on the outer periphery of the mating wheel. A display window for displaying the indicating scale and the value of the indicating dial is opened on the operating wheel.

[0010] The operating member is axially movable along its axis and is arranged on the tractor body. The locking mechanism includes a concave-convex anti-rotation matching structure arranged between the operating member and the tractor body. The operating member is connected to an elastic member that elastically presses it to keep it in a concave-convex anti-rotation position with the tractor body.

[0011] The concave-convex matching structure is an end face tooth matching structure.

[0012] A locking tongue is radially movable on the operating member, one end of the locking tongue is engaged with the axial stop of the tractor body, and the other end is elastically clamped on the operating member. The coil spring tissue tractor also includes an unlocking key, which has an elastic clamping end for driving the locking tongue to disengage and move it away from the tractor body, so that the other end is disengaged from the tractor body.

[0013] The elastic clamping end of the lock tongue is provided with a clamping protrusion cantilevered inwardly, the operating member is provided with a clamping groove for clamping the clamping protrusion, the lock tongue is provided with an avoidance groove for allowing the key to pass through, the front end of the key is provided with a shift block, and the operating member is provided with an unlocking inclined surface. When the key is rotated, the shift block is driven by the unlocking inclined surface to press the lock tongue outward to make the clamping protrusion escape from the clamping groove.

[0014] The tissue traction system of the present invention adopts the following technical solutions:

[0015] The tissue traction system includes a pull wire and a coil spring type tissue traction device, wherein the coil spring type tissue traction device includes a traction device body having a pull wire channel for the pull wire to pass through, and the traction device body is provided with a coil spring, one end of the coil spring is used to be connected to the pull wire, and the other end is connected to an operating member, and the operating member is locked with the traction device body through a locking mechanism and a locking mechanism. Rotating the operating member can pull the pull wire at one end thereof to move, thereby providing different sizes of pulling force, and after being rotated into place, the operating member is locked to the traction device body through the locking mechanism.

[0016] A winding wheel is rotatably mounted on the tractor body, and the coil spring is connected with the pulling wire through the winding wheel.

[0017] The operating member is an operating wheel that cooperates with the winding wheel set. One end of the coil spring is connected to the winding wheel, and the other end is connected to the operating wheel. An indicating structure for indicating the relative rotation position of the operating wheel and the winding wheel is provided between the operating wheel and the winding wheel.

[0018] The indicating structure includes an indicating scale arranged on one of the operating wheel and the winding wheel, and one of the operating wheel and the winding wheel is rotatably equipped with an indicating disk, and the other is provided with a toggle structure for toggling the indicating disk to rotate after the indicating disk is rotated by a set angle.

[0019] The winding wheel includes a winding portion for winding a wire and a mating wheel that cooperates with an operating wheel set. The indicating dial is rotatably arranged on the inner wall of the operating wheel. The dial structure is a dial column arranged on the mating wheel. The indicating scale is arranged on the outer periphery of the mating wheel. A display window for displaying the indicating scale and the value of the indicating dial is opened on the operating wheel.

[0020] The operating member is axially movable along its axis and is arranged on the tractor body. The locking mechanism includes a concave-convex anti-rotation matching structure arranged between the operating member and the tractor body. The operating member is connected to an elastic member that elastically presses it to keep it in a concave-convex anti-rotation position with the tractor body.

[0021] The concave-convex matching structure is an end face tooth matching structure.

[0022] A locking tongue is radially movable on the operating member, one end of the locking tongue is engaged with the axial stop of the tractor body, and the other end is elastically clamped on the operating member. The coil spring tissue tractor also includes an unlocking key, which has an elastic clamping end for driving the locking tongue to disengage and move it away from the tractor body, so that the other end is disengaged from the tractor body.

[0023] The elastic clamping end of the lock tongue is provided with a clamping protrusion cantilevered inwardly, the operating member is provided with a clamping groove for clamping the clamping protrusion, the lock tongue is provided with an avoidance groove for allowing the key to pass through, the front end of the key is provided with a shift block, and the operating member is provided with an unlocking inclined surface. When the key is rotated, the shift block is driven by the unlocking inclined surface to press the lock tongue outward to make the clamping protrusion escape from the clamping groove.

[0024] The beneficial effects of the present invention are as follows: the coil spring type tissue traction device of the present invention comprises a traction device body having a wire pulling channel for allowing a wire to pass through, a coil spring is arranged on the traction device body, one end of the coil spring is used to be connected to the wire pulling channel, and the other end is connected to an operating member, the operating member is locked in cooperation with the traction device body through a locking mechanism and a rotation-stopping lock, the rotating operating member can pull the wire pulling channel at one end thereof to move, thereby providing pulling forces of different magnitudes, and the operating member is locked on the traction device body through the locking mechanism after being rotated into place, when in use, the rotating operating member can cause the coil spring to contract, thereby providing elastic pulling force to the wire pulling channel connected to the other end of the coil spring, after being adjusted into place, the locking mechanism locks the operating member on the traction device body, thus providing elastic pulling force through the coil spring, thus avoiding large errors caused by relying on the doctor's experience and judgment, and being easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0026] Figure 1 is a schematic structural diagram of a tissue traction device in an embodiment of a tissue traction system of the present invention;

[0027] Figure 2 for Figure 1 A top view of

[0028] Figure 3 for Figure 2 A schematic diagram of the position of the indicator plate in FIG.

[0029] Figure 4 for Figure 1 The right side cross-sectional view of

[0030] Figure 5 It is a schematic diagram of the structure of the crankshaft;

[0031] Figure 6 It is a structural schematic diagram of the winding wheel;

[0032] Figure 7 is a structural schematic diagram of an operating wheel;

[0033] Figure 8 for Figure 7 Left view of

[0034] Fig. 9 for Figure 8 The cross-sectional view of the rectangular slot in the AA direction;

[0035] Fig.10It is a structural schematic diagram of the lock tongue;

[0036] Fig.11 is a schematic diagram of the structure of the key;

[0037] Fig.12 It is a structural schematic diagram of the indicator panel;

[0038] In the figure: 1, crankshaft; 2, connecting cylinder; 3, locking spring; 4, winding wheel; 5, operating wheel; 6, locking tongue; 7, second end face gear; 8, key; 11, rotating shaft; 101, ring groove; 102, quadrangular segment; 103, external thread segment; 41, winding part; 42, matching wheel; 401, hanging column; 402, installation cylinder; 403, winding spring fixing column; 404, blocking column hole; 405, dial column; 406, scale value; 51, operating wheel body; 52, first end face gear; 501, positioning sleeve; 502, coil spring outer stop column; 503, annular window; 504, circular hole; 505, L-shaped groove; 506, rectangular groove; 507, positioning shaft; 508, flexible stop column; 509, first digital window; 510, second digital window; 511, lock tongue slot; 601, slot; 602, avoidance hole; 603, clamping protrusion; 604, return protrusion; 801, small cylinder; 802, dial block; 803, handle; 901, sliding mouth; 902, indication. DETAILED DESCRIPTION

[0039] 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.

[0040] An embodiment of the tissue traction system of the present invention, such as Figures 1 to 12 As shown, it includes a pull wire and a coil spring type tissue traction device, including a traction device body having a pull wire channel for the pull wire to pass through, a coil spring is provided on the traction device body, one end of the coil spring is used to connect with the pull wire, and the other end is connected with an operating member, the operating member is locked with the traction device body through a locking mechanism and a locking mechanism, and rotating the operating member can pull the pull wire at one end thereof to move, thereby providing different sizes of pulling force, and after rotating into place, the operating member is locked to the traction device body through the locking mechanism.

[0041] In this embodiment, the tractor body includes a crankshaft 1 and a connecting tube 2. The crankshaft 1 is made of 3mm medical stainless steel. The crankshaft 1 includes a vertical portion extending in the up-down direction and connected to the connecting tube 2, and a horizontal portion extending in the horizontal direction at the upper end of the vertical portion, wherein the horizontal portion forms a rotating shaft 11 for mounting components such as a coil spring, a winding wheel 4, and an operating wheel 5. An annular groove 101 is provided at the middle position on the right side of the rotating shaft 11 for clamping the locking tongue 6, and a quadrangular segment 102 is provided on the right side of the annular groove 101 for anti-rotation cooperation with the second end face gear 7. The external thread segment 103 is used to mount a cap nut, so that the second end face gear 7 can be fixed on the rotating shaft 11.

[0042] In this embodiment, a winding wheel 4 is rotatably mounted on the traction device body, and a coil spring is connected to the pull wire through the winding wheel 4, so that during the winding process, the pull wire can be wound around the winding wheel 4, thereby preventing the pull wire from being entangled on the traction device body.

[0043] In order to achieve the coordination between the operating member and the winding wheel 4, in the present embodiment, the operating member is an operating wheel 5 which is fitted with the winding wheel 4, one end of the coil spring is connected to the winding wheel 4, and the other end is connected to the operating wheel 5, and an indicating structure for indicating the relative rotation position of the two is provided between the operating wheel 5 and the winding wheel 4.

[0044] The structure of the winding wheel 4 is as follows: Figure 6 As shown, the left side of the winding wheel 4 is set as a winding part 41, and the inner diameter of the winding part 41 is set as a step-like shape with a larger inner diameter on the left and a smaller inner diameter on the right, so that the locking spring 3 can be pressed against the inner hole of the winding part 41. The length of the larger inner diameter on the left side is one-third of the length of the locking spring 3. A wire hanging column is set on the outer periphery of the winding part 41, and a notch is set in the middle of the wire hanging column along the long rod direction for connecting the pull wire. The right side of the winding wheel 4 is set as a matching wheel 42, and a mounting cylinder 402 is set in the inner center of the matching wheel 42. The mounting cylinder 402 is used to be installed on the rotating shaft 11 to achieve rotational matching.

[0045] A coil spring fixing post 403 is fixedly disposed directly above the mounting tube 402 for connecting the coil spring, and a stop post hole 404 (such as Figure 4 As shown in FIG. 4 ), the stopper hole 404 is used for the initial positioning of the coil spring, which is convenient for the installation of the winding wheel 4 and the matching operating wheel 5. When in use, the coil spring is in a specified position through the cooperation of the stopper hole 404 and the coil spring fixing column 403. At this time, when installing the matching operating wheel 5, the outer part of the coil spring is directly mounted on the coil spring outer stopper 502 to achieve the purpose of fixing.

[0046] The indicating structure includes an indicating scale arranged on one of the operating wheel 5 and the winding wheel 4, and an indicating disk is rotatably mounted on one of the operating wheel 5 and the winding wheel 4, and a toggle structure for toggling the indicating disk after the indicating disk is rotated to a set angle is arranged on the other. In this embodiment, the winding wheel 4 includes a winding portion 41 for winding and a matching wheel 42 fitted with the operating wheel 5, the indicating disk is rotatably arranged on the inner wall of the operating wheel 5, the toggle structure is a dial column 405 arranged on the matching wheel 42, the indicating scale is arranged on the outer periphery of the matching wheel 42, and a display window for displaying the indicating scale and the value of the indicating disk is opened on the operating wheel 5. A dial column 405 is arranged on the right outer circumferential surface of the matching wheel 42, and the indicating scale is the scale value 406 arranged on the right side of the dial column 405.

[0047] The structure of the operating wheel 5 is as follows: Figure 7-9 As shown, the left side of the operating wheel 5 is provided with an operating wheel body 51, and the outer circumferential surface of the operating wheel body 51 is provided with anti-slip stripes to facilitate operation by medical staff. A positioning sleeve 501 is provided at the inner center of the operating wheel body 51, and the outer circumferential surface of the mounting cylinder 402 matches the inner circumferential surface of the positioning sleeve 501, so that the winding wheel 4 and the operating wheel 5 are coaxial, so that the relative movement of the winding wheel 4 and the operating wheel is stable.

[0048] A coil spring outer stop column 502 is fixedly provided on the inner upper rear of the operating wheel body 51, which is used to connect the other end of the coil spring. One end of the coil spring is fixed on the coil spring fixing column 403, and the other end of the coil spring is fixed on the coil spring outer stop column 502, so that the force value of the wire pulling changes by 1kg for each rotation of the winding wheel 4. An annular window 503 is provided on the front upper part of the operating wheel body 51, and the annular window 503 is provided with a conical surface with a thick upper part and a thin lower part, which is used to guide the shift block 802 of the key 8 to move outward. A circular hole 504 is provided in the middle of the annular window 503, and the circular hole 504 is used for positioning and matching the small cylinder 801 of the key 8. An inclined L-shaped groove is provided on the upper part of the circular hole 504, and the L-shaped groove is used for the locking tongue 6 to be clamped.

[0049] A rectangular groove 506 is provided just above the inner side of the operating wheel body 51, and a positioning shaft 507 is fixedly provided in the middle of the rectangular groove 506 for rotating the assembly indicator plate. Flexible blocking columns 508 are fixedly provided on both sides of the front and rear of the positioning shaft 507, and a hemispherical shape is provided at the lower end of the flexible blocking column 508. A first digital window 509 and a second digital window 510 are provided on the right side of the flexible blocking column 508, respectively, and an indicating arrow is provided in the middle of the right side of the second digital window 510 for marking. The first digital window 509 and the second digital window 510 are display windows. The indication 902 is read through the first digital window 509, and the scale value 406 is read through the second digital window 510.

[0050] The structure of the indicator plate is as follows Fig.12As shown, the indicator disk is made of elastic material, and the upper surface of the indicator disk is provided with an indication 902 arranged around the center. Sliding openings 901 are provided at the six corners of the indicator disk, and the sliding openings 901 correspond to the dial column 405, so that when the winding wheel 4 rotates one circle, the dial column 405 drives the indicator disk to rotate 60 degrees through the sliding openings 901, so that the indication 902 of the indicator disk changes. The sliding openings 901 correspond to the flexible blocking column 508, so that when the indicator disk rotates, the indicator disk can bypass the flexible blocking column 508 under its own elastic action. At the same time, when the indicator disk does not rotate, the flexible blocking column 508 can ensure that the indicator disk is located at an accurate position through the sliding openings 901, thereby preventing the indication 902 of the indicator disk from being incorrect due to shaking or other reasons, thereby causing medical accidents.

[0051] The right side of the operating wheel 5 is provided with a first end face gear 52, the number of teeth of the first end face gear 52 is 10, the first end face gear 52 and the second end face gear 7 are mutually anti-rotatable, and cooperate with the locking spring 3 to form a locking mechanism. The left side of the first end face gear 52 is provided with a lock tongue slot 511 for inserting the lock tongue 6. The lock tongue slot 511 corresponds to the position of the circumferential direction of the annular window 503, and the lock tongue slot 511 is opposite to the annular groove 101 in the axial direction of the rotating shaft 11.

[0052] The structure of the lock tongue 6 is as follows: Fig.10 As shown, the lock tongue 6 is made of elastic material, and a slot 601 is provided at the lower center of the lock tongue 6, so that the annular groove 101 is concentric with the slot 601, so that the lock tongue 6 can be inserted into the annular groove 101 through the slot 601, so that the lock tongue 6 and the operating wheel 5 are axially locked on the rotating shaft 11. A avoidance hole 602 is provided along the length direction at the upper center of the lock tongue 6, and the avoidance hole 602 is used for inserting the key 8. A clamping protrusion 603 is provided on one side of the top of the lock tongue 6, and the clamping protrusion 603 can be clamped in the first notch of the L-shaped groove 505, thereby preventing the lock tongue 6 from coming out of the lock tongue slot 511. A call-back protrusion 604 is provided at the lower part of the clamping protrusion 603, and the call-back protrusion 604 is clamped in the second notch of the L-shaped groove, wherein the length of the call-back protrusion 604 is greater than the length of the clamping protrusion 603, so that when the clamping protrusion 603 is disengaged from the L-shaped groove, it can still be guided and moved in the L-shaped groove.

[0053] The structure of key 8 is as follows Fig.11 As shown, the left end of the key 8 is provided with a small cylinder 801, so that the small cylinder 801 cooperates with the circular hole 504 to play a positioning role, and a shift block 802 is provided on the right side of the small cylinder 801, and the shift block 802 can move outward under the guidance of the thick upper and thin lower conical surface provided by the annular window 503. A handle 803 is provided on the right side of the shift block 802.

[0054] In this embodiment, the operating member is axially movable along its axis and arranged on the tractor body, that is, the operating wheel 5 is axially slidably arranged on the rotating shaft 11. The locking mechanism includes a concave-convex anti-rotation matching structure arranged between the operating member and the tractor body, and the concave-convex anti-rotation matching structure is a structure in which the first end face gear 52 and the second end face gear 7 cooperate. The operating member is connected with an elastic member that elastically presses it to keep it in the concave-convex anti-rotation position with the tractor body, that is, the locking spring 3.

[0055] The operating member is radially movable and equipped with a lock tongue 6, that is, the lock tongue 6 is radially slidably arranged in the lock tongue slot 511, one end of the lock tongue 6 is axially blocked with the tractor body, and the other end is elastically clamped on the operating member, that is, the lock tongue 6 is axially blocked through the slot and the annular groove 101 of the rotating shaft 11, and is elastically clamped through the clamping protrusion 603 and the L-shaped groove. The coil spring tissue tractor also includes an unlocking key 8, which has an elastic clamping end for driving the lock tongue 6 to disengage from the engagement so that it moves away from the tractor body, so that the other end is disengaged from the tractor body.

[0056] The elastic clamping end of the lock tongue 6 is provided with a clamping protrusion 603 cantilevered inwardly, and the operating member is provided with a clamping groove (i.e., an L-shaped groove 505) for clamping the clamping protrusion 603. The lock tongue 6 is provided with an avoidance groove for the key 8 to pass through. A shift block 802 is provided at the front end of the key 8, and the operating member is provided with an unlocking inclined surface (i.e., a conical surface with a thick top and a thin bottom provided in the annular window 503). When the key 8 is rotated, the shift block 802 is driven by the unlocking inclined surface to press the lock tongue 6 outward to make the clamping protrusion 603 escape from the clamping groove.

[0057] When the present invention is used, first, the patient passes the pull wire with the steel needle through the skin on both sides of the wound (the specific method of use can refer to the threading method of the skin retractor in CN209611223U). The pull wire passes through the connecting tube 2 and is wound on the winding part 41 and fixed on the notch of the hanging wire column 401. Then, the medical staff turns the key 8 to make the small cylinder 801 match the circular hole 504, so that the shift block 802 is located between the annular window 503 and the lock tongue 6 (at this time, the main body of the lock tongue 6 and the bottom of the annular window 503 have a certain interval, and the interval can accommodate the shift block 802). By turning the key 8, the shift block 802 rotates along the unlocking surface of the annular window 503, and the shift block 802 moves outward under the guidance of the unlocking surface, so that the pressing and mounting protrusion 603 is separated from the L-shaped groove 505, and the return protrusion 604 is still moving in the L-shaped groove 505 to prevent the lock tongue 6 from completely separating from the L-shaped groove 505. At the same time, the locking tongue 6 moves upward with the circular hole 504 as the center, driving the locking tongue 6 to move upward (in the direction away from the rotating shaft 11), so that the slot is separated from the annular groove 101. At this time, the winding wheel 4 and the operating wheel 5 can move axially along the rotating shaft 11, so that the first end face teeth and the second end face teeth on the operating wheel 5 are separated from the anti-rotation fit, so that the operating wheel 5 can be rotated to store energy in the coil spring and set the operating wheel 5 to the value of the first stage when the wound grows. The initial value is recorded through the first digital window 509 and the second digital window 510.

[0058] Finally, the key 8 is turned continuously, so that the shifting block 802 pushes the return projection 604 to move downward along the L-shaped groove 505, so that the lock tongue 6 is reset, and the adjustment is completed. Afterwards, the medical staff takes the key 8 away to prevent the patient from adjusting the lock at will and avoid injuries such as wound tearing caused by the patient's operation.

[0059] During the entire use process, the first end face gear 52 and the second end face gear 7 cooperate with each other, so that every time the first end face gear 52 rotates one tooth, the scale value 406 on the matching wheel 42 rotates accordingly. When the number on the matching wheel 42 turns to 9, at this time, the dial column 405 cooperates with the sliding opening 901, so that the indicator dial rotates 60 degrees, so that the indicator dial in the first digital window 509 displays a different value; the moving distance of the first end face gear 52 and on the rotating shaft 11 is less than the distance from the left end face of the winding part 41 to the left side of the locking spring 3.

[0060] During the adjustment and use process, the medical staff applies a pre-tightening force to the coil spring so that the coil spring can drive the winding wheel 4 to rotate, thereby avoiding the pain caused to the patient by the medical staff's frequent operations. At the same time, the present invention is adjustable and readable, which is convenient for the medical staff to record, so that they have a rough reference when dealing with the same situation again.

[0061] In other embodiments of the present invention, the pull wire can also be directly set on the coil spring. In this case, there is no need to set a winding wheel, and the coil spring can directly drive the pull wire to be wound around the rotating shaft; the operating part can also be set as a star-shaped handle structure; the winding wheel can also be mounted on the operating wheel; the concave-convex matching structure can also adopt a matching structure of a spherical protrusion and a spherical groove; a hanging hole can also be set on the elastic clamping end of the lock tongue, and a hook can be set on the key to achieve unlocking of the lock tongue; a pull wire channel can also be set on the traction device body.

[0062] When the retractor of the present invention is used, it can be used in conjunction with a steel needle. In this case, the steel needle is inserted into the skin on both sides of the wound, and the pull wire is passed around the two steel needles and the excess part of the pull wire is connected to the skin retractor. In addition, the steel needle can be used without using it. In this case, the pull wire is directly passed around the skin at the edge of the wound, and at the same time, the excess parts of the two ends of the pull wire are wrapped around the retractor, so that the wound can be pulled directly by a pull wire.

[0063] The tissues described in the present invention are human tissues, specifically including skin, blood vessels, nerves, tendons, muscles, joint capsules, ligaments, bones, etc., that is, the tissue pulling system and tissue pulling device of the present invention can pull all of the above tissues.

[0064] The embodiment of the coiled spring tissue retractor of the present invention has the same structure as the coiled spring tissue retractor in the embodiment of the tissue retracting system, and will not be described in detail.

[0065] 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. Coil spring tissue retractor, characterized in that: The utility model comprises a tractor body having a wire pulling channel for passing the wire, the wire pulling channel is a connecting tube, a coil spring is arranged on the tractor body, one end of the coil spring is used to be connected with the wire pulling, and the other end is connected with an operating member, the operating member is locked with the tractor body through a locking mechanism, and the wire pulling at one end thereof can be pulled to move by rotating the operating member, thereby providing pulling forces of different sizes, and the operating member is locked on the tractor body through the locking mechanism after being rotated into place, a winding wheel is rotatably mounted on the tractor body, the coil spring is connected with the wire pulling through the winding wheel, the operating member is an operating wheel matched with the winding wheel set, one end of the coil spring is connected with the winding wheel, and the other end is connected with the operating wheel, an indicating structure for indicating the relative rotational position of the two is arranged between the operating wheel and the winding wheel, the indicating structure comprises an indicating scale arranged on one of the operating wheel and the winding wheel, and an indicating disk is rotatably mounted on one of the operating wheel and the winding wheel, and a toggle structure for toggling the indicating disk after the indicating disk is rotated to a set angle is arranged on the other.

2. The coil spring tissue retractor according to claim 1, characterized in that: The winding wheel includes a winding portion for winding a wire and a mating wheel that cooperates with an operating wheel set. The indicating dial is rotatably arranged on the inner wall of the operating wheel. The dial structure is a dial column arranged on the mating wheel. The indicating scale is arranged on the outer periphery of the mating wheel. A display window for displaying the indicating scale and the value of the indicating dial is opened on the operating wheel.

3. The coil spring tissue retractor according to claim 1 or 2, characterized in that: The operating member is axially movable along its axis and is arranged on the tractor body. The locking mechanism includes a concave-convex anti-rotation matching structure arranged between the operating member and the tractor body. The operating member is connected to an elastic member that elastically presses it to keep it in a concave-convex anti-rotation position with the tractor body.

4. The coil spring tissue retractor according to claim 3, characterized in that: The concave-convex anti-rotation matching structure is an end face tooth matching structure.

5. The coil spring tissue retractor according to claim 3, characterized in that: A locking tongue is radially movable on the operating member, one end of the locking tongue is engaged with the axial stop of the tractor body, and the other end is elastically clamped on the operating member. The coil spring tissue tractor also includes an unlocking key, which has an elastic clamping end for driving the locking tongue to disengage and move it away from the tractor body, so that the other end is disengaged from the tractor body.

6. The coil spring tissue retractor according to claim 5, characterized in that: The elastic clamping end of the lock tongue is provided with a clamping protrusion cantilevered inwardly, the operating member is provided with a clamping groove for clamping the clamping protrusion, the lock tongue is provided with an avoidance groove for allowing the key to pass through, the front end of the key is provided with a shift block, and the operating member is provided with an unlocking inclined surface. When the key is rotated, the shift block is driven by the unlocking inclined surface to press the lock tongue outward to make the clamping protrusion escape from the clamping groove.

7. Tissue traction system, characterized in that: It comprises a pulling wire and a coiled spring type tissue retractor, wherein the coiled spring type tissue retractor is the coiled spring type tissue retractor as described in any one of claims 1-6.

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