CN111789662A - An ESD surgical traction device - Google Patents

Abstract

The invention discloses an ESD surgical traction instrument, comprising a guide handle, an upper cover, a guide ball, an outer sleeve, a guide tube and a pulling clip; the outer sleeve, the guide tube and the pulling clip are sequentially connected in the axial direction, and the The guide ball is fixedly connected with the outer sleeve, the upper cover is sleeved on the outer circumference of the guide ball, and is set to be rotatable along the spherical surface of the guide ball; the guide handle is connected with a push-pull cable, and the The push-pull cable passes through the upper cover, the guide ball, the outer sleeve and the guide tube in turn in the axial direction and is connected to the pulling clip, and the guide handle can reciprocate along the axial direction of the push-pull cable; the upper A number of traction wires are connected to the cover, and each of the traction wires is connected to the end of the guide tube along the outer circumference of the guide ball, over the guide ball. The invention can simultaneously have the functions of controlling the rotation, bending, opening and closing of the head pulling clip, and has wider applicability.

Description

An ESD surgical traction device

technical field

The invention relates to the technical field of medical devices, in particular to an ESD surgical traction device.

Background technique

ESD surgery refers to endoscopic submucosal resection, which is a minimally invasive surgery to remove gastric polyps or colon polyps under gastroscope or colonoscopy. There are many manipulations for stripping tissue in ESD surgery, but due to the limitations of instruments The operation process is difficult, and it is not easy to accurately grasp, move and control the direction. Therefore, it is necessary to design an ESD surgical instrument with a controllable head.

SUMMARY OF THE INVENTION

In view of the limitations of the current mucosal tissue pulling instruments during ESD surgery, the grasping head cannot realize rotation and bending, and all need to rely on the bending of the endoscope to perform the grasping operation. The present invention provides a An ESD surgical traction device is proposed to solve the above problems.

The technical solution adopted by the present invention to solve the technical problem is: an ESD surgical traction instrument, comprising a guiding handle, an upper cover, a guiding ball, an outer sleeve, a guiding tube and a pulling clip; the outer sleeve, the guiding tube and the pulling The clips are sequentially connected along the axial direction, the guide ball is fixedly connected with the outer sleeve, the upper cover is sleeved on the outer circumference of the guide ball, and is set to be rotatable along the spherical surface of the guide ball; the guide A push-pull cable is connected to the handle, and the push-pull cable passes through the upper cover, the guide ball, the outer sleeve and the guide tube in turn in the axial direction and is connected to the pulling clip, and the guide handle can follow the push-pull cable. The upper cover is connected with a plurality of traction wires, and each of the traction wires is connected to the end of the guide tube along the outer circumference of the guide ball, over the guide ball.

Further, a spring is sleeved on the push-pull cable, and a cavity suitable for axially limiting the spring is provided between the guide handle and the guide ball.

Further, a bracket is fixed on the bottom of the guide ball, and the outer sleeve passes through the bracket and is rotatably connected with the bracket.

Further, the upper cover further includes a pressing cover and a card cover that is fastened and fixed with the bracket.

Further, the ESD surgical traction instrument further includes a traction handle sleeved on the guide ball, the traction handle is configured to be rotatable along the spherical surface of the guide ball, and the outer surface of the traction handle is provided with a handle suitable for any A plurality of sliding grooves through which the traction wire passes, the press cover is pressed against the outer surface of the traction handle, and the card cover is provided on the outer circumference of the press cover.

Further, there is a rolling groove between the upper cover and the guide ball, and a plurality of balls are arranged in the rolling groove.

Further, the upper cover further includes a guide post, and the lower part of the guide handle is adapted to pass through the guide post and reciprocate along the axial direction of the guide post.

Further, the upper part of the guide ball has a spherical surface suitable for the rotation of the upper cover, the lower part of the guide ball has a tapered structure with a wide upper and a narrow lower, and the bracket is fixed on the tapered structure.

Further, the bracket is provided with two hand buckles suitable for the fingers to pass through, and the top of the guide handle is also provided with a finger cover suitable for the thumb to pass through.

Further, the pulling clip includes a fixed seat and two sets of jaw assemblies, the fixed seat is fixedly connected with the guide tube, and each set of jaw assemblies includes a draw rod and a jaw whose ends are hinged to each other. The middle part of the jaws of the jaw assembly is hinged with the guide tube of the fixed seat at the same time, and the pull rods of the two groups of the jaw assemblies are hinged with the push-pull cable at the same time.

The beneficial effects of the present invention are:

(1) The ESD surgical traction instrument of the present invention has a simple structure, and can be opened or closed by pushing and pulling the guide handle along the axial direction to make the push-pull cable push and pull the pulling clip to realize the opening or closing of the pulling clip; Rotating the guide handle realizes the rotation of the pulling clip; the upper cover can also be rotated laterally, and the guide tube can be bent by using the pulling wire, so as to control the rotation, bending, opening and closing of the head pulling clip. All functions are integrated in the present invention, and the applicability is wider.

(2) In the present invention, a spring is sleeved on the push-pull cable, and the spring can automatically reset the push-pull cable. At the same time, when the guide handle drives the guide tube to angularly deflect, the spring can also offset the radial deviation of the push-pull cable. Avoid bending the push-pull cable and prolong the service life of the instrument.

(3) In the present invention, the traction wire is arranged on the traction handle sleeved on the outer circumference of the guide ball and fixed at the top of the traction handle. When the guide tube is not bent, the connection point between the traction wire and the traction handle is located in the center of the instrument This greatly reduces the difficulty of finding welding points when connecting the traction wire and the traction handle.

(4) The present invention is provided with a hand buckle and a finger cover, and uses the thumb, index finger and middle finger capable of flexible movement to operate the instrument, which conforms to the principle of ergonomics and is convenient to operate.

Description of drawings

The present invention will be further described below with reference to the accompanying drawings and embodiments.

1 is a perspective view of a specific embodiment of the ESD surgical traction instrument of the present invention;

Fig. 2 is an enlarged view at a place in Fig. 1;

FIG. 3 is a front view of the specific embodiment of the ESD surgical traction device shown in FIG. 1;

Fig. 4 is A-A sectional view of Fig. 3;

Fig. 5 is an enlarged view at b in Fig. 4;

Fig. 6 is the enlarged view of c place in Fig. 4;

7 is a perspective view of a specific embodiment of the ESD surgical traction instrument of the present invention;

FIG. 8 is a schematic cross-sectional view of the ESD surgical traction device shown in FIG. 7;

Fig. 9 is an enlarged view at d in Fig. 8;

FIG. 10 is a schematic structural diagram of the traction handle in the ESD surgical traction device shown in FIG. 7 .

In the figure, 1, the pulling clip, 101, the first jaw, 102, the first draw rod, 103, the second jaw, 104, the second draw rod, 105, the fixed seat, 2, the guide tube, 3, the outer sleeve, 4. Bracket, 401, hand buckle, 5, traction wire, 6, guide ball, 601, groove, 7, card cover, 8, upper cover, 801, traction handle, 8011, chute, 802, gland, 803, guide column, 8031, upper boss, 9, guide handle, 901, finger cover, 902, lower boss, 10, rolling groove, 11, push-pull cable, 12, cavity, 13, ball, 14, spring.

Detailed ways

The following describes in detail the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary, only used to explain the present invention, and should not be construed as a limitation of the present invention.

When the instrument of the present invention is in use, the central axis is vertical, and the guide handle is located above. The terms "up" and "down" that indicate orientation or positional relationship in the present invention are all based on the positional relationship when the instrument is in use. .

As shown in Figures 1-7, an ESD surgical traction instrument includes a guide handle 9, an upper cover 8, a guide ball 6, an outer sleeve 3, a guide tube 2 and a pulling clip 1; an outer sleeve 3, a guide tube 2 and The pulling clips 1 are connected in sequence in the axial direction, the guide ball 6 is fixedly connected with the outer sleeve 3, the upper cover 8 is sleeved on the outer circumference of the guide ball 6, and is configured to be rotatable along the spherical surface of the guide ball 6; the guide handle 9 is connected to There is a push-pull cable 11. The push-pull cable 11 passes through the upper cover 8, the guide ball 6, the outer sleeve 3 and the guide tube 2 in turn in the axial direction and is connected to the pulling clip 1, and the guide handle 9 can reciprocate along the axial direction of the push-pull cable 11. Movement; a number of traction wires 5 are connected to the upper cover 8 , and each traction wire 5 is connected to the end of the guide tube 2 along the outer circumference of the guide ball 6 over the guide ball 6 .

The shape of the guide ball 6 is generally spherical, and the upper cover 8 is sleeved on the outer circumference of the guide ball 6, which means that the radial distance between the upper cover 8 and the guide ball 6 is fixed. Under the premise of the guide ball 6, it rotates in all directions, thereby changing the distance between each traction wire 5 and the end of the guide tube 2, and realizing the angular deflection of the guide tube 2 (the push-pull cable 11 can be bent to a certain extent at this time). The outer sleeve 3, the guide tube 2 and the pulling clip 1 are arranged in a straight line, the pulling clip 1 is used to directly grasp the tissue, the outer sleeve 3 plays the role of guiding the linear movement, the guiding tube 2 can be bent, and the The angle of the pulling clip 1 is adjusted by bending, the guide handle 9 is used as the operating end, and the push-pull cable 11 on the guiding handle 9 directly pushes the pulling clip 1 to drive the pulling clip 1 to open or close.

When the ESD surgical traction instrument of this embodiment is working, the guide ball 6 and the outer sleeve 3 are fixed components, and the movement of the guide handle 9 and the upper cover 8 is controlled to drive the pulling clip 1 to perform corresponding actions. The guide ball 6 itself is mainly used to realize The universal rotation of the upper cover 8 refers to the rotation of the upper cover 8 around the center of the guide ball 6. Since the end of the traction wire 5 is fixed to the upper cover 8, when the upper cover When rotating, the distance between each pulling wire 5 and the end of the guide tube 2 changes, and the bending of the guide tube 2 in all directions is realized by the different pulling forces of each pulling wire 5 on the guide tube 2.

Embodiment 1, an ESD surgical traction instrument, as shown in Figures 1-6, includes a guide handle 9, an upper cover 8, a guide ball 6, an outer sleeve 3, a guide tube 2 and a pulling clip 1; an outer sleeve 3, a guide The tube 2 and the pulling clip 1 are sequentially connected in the axial direction, the guide ball 6 is fixedly connected with the outer sleeve 3, and the upper cover 8 is sleeved on the outer circumference of the guide ball 6 and rotates along the spherical surface of the guide ball 6; the guide handle 9 is connected with a The push-pull cable 11, the push-pull cable 11 passes through the gland 802, the guide ball 6, the outer sleeve 3 and the guide tube 2 in turn in the axial direction and is connected to the pulling clip 1, and the guide handle 9 can reciprocate along the axial direction of the push-pull cable 11 ; A number of traction wires 5 are connected to the upper cover 8, and each traction wire 5 is connected to the end of the guide tube 2 along the outer circumference of the guide ball 6 over the guide ball 6.

The guide ball 6 is formed by cutting the sphere structure. After the top and bottom of the guide ball 6 are cut, the installation and movement space is reserved for the guide handle 9 and the outer sleeve 3 to reduce the size of the instrument. Only the central spherical shape of the guide ball 6 needs to be used. The surface can be matched with the upper cover 8.

The center of the upper cover 8 and the guide ball 6 has a hole for the push-pull cable 11 to pass through. The clip 1 usually has the function of opening and closing, and is used to grasp the internal tissue of the human body, and the push-pull cable 11 is made of steel wire or nickel-titanium alloy wire.

The push-pull cable 11 drives the pulling clip 1 to open or close, but is not limited to the following structures: the pulling clip 1 includes a fixed seat 105 and two sets of jaw assemblies, the fixed seat 105 is fixedly connected with the guide tube 2, and each set of jaws The assembly includes draw rods and jaws whose ends are hinged to each other. The middle parts of the jaws of the two sets of jaw assemblies are simultaneously hinged with the guide tube of the fixing seat 105 , and the draw rods of the two sets of jaw assemblies are simultaneously hinged with the push-pull cable 11 . As shown in FIGS. 3 and 5 , the pulling clip 1 includes a first jaw assembly and a second jaw assembly, the first jaw assembly includes a first pull rod 102 and a first jaw 101 , and the second jaw assembly includes a first Two tie rods 104 and second jaws 103, the upper ends of the first tie rod 102 and the second tie rod 104 are hinged with the lower end of the push-pull cable 11 at the same time, the lower end of the first tie rod 102 is hinged with the upper end of the first jaw 101, and the second tie rod 104 The lower end of the second jaw 103 is hinged with the upper end of the second jaw 103, the middle parts of the first jaw 101 and the second jaw 103 are hinged with the guide tube of the fixing seat 105 at the same time, and the hinge point of the first pull rod 102 and the first jaw 101 and the first The hinge points of the second pull rod 104 and the second jaw 103 are arranged on both sides of the push-pull cable 11 in the axial direction. When the push-pull cable 11 moves downward, the hinge point of the first pull rod 102 and the first clamp jaw 101 and the second pull rod 104 The distance with the hinge point of the second jaw 103 is increased, so that the lower ends of the first jaw 101 and the second jaw 103 are separated from each other, so that the opening of the pulling clamp 1 is realized. On the contrary, when the push-pull cable 11 moves upward , the pulling clip 1 is closed.

The traction wire 5 can be directly arranged between the outer circumferences of the guide balls 6, as long as the traction wire 5 is arranged along the spherical surface. When the upper cover 8 rotates, the traction wire 5 moves with the upper cover 8. When the upper cover 8 deviates from the outer jacket When the central axis of the tube 3, the distance between each pulling wire 5 and the end of the guide tube 2 is different, and the pulling wire 5 with a larger distance pulls the guide tube 2, so that the guide tube 2 bends to this side, as shown in Figure 2 As shown, the traction wires 5 are provided with four, and the four traction wires 5 are divided into two groups, respectively controlling the guide tube 2 to bend in two mutually perpendicular planes, and one end of the four traction wires 5 is fixed under the upper cover 8 , the other end is fixed on the end of the guide tube 2, and the end of the guide tube 2 is the end of the guide tube 2 that is away from the operator. When the guide tube 2 is not bent, the connection point of each traction wire 5 and the upper cover 8 is located at the same height to ensure the symmetry of the structure.

The upper cover 8 and the guide ball 6 can be limited by means of snapping, so that the upper cover 8 can rotate around the center of the guide ball 6 without being separated from the surface of the guide ball 6 . The guide handle 9 reciprocates in the axial direction. At this time, the upper cover 8 or the guide ball 6 needs to be provided with a hole for the guide handle 9 to reciprocate and fit with the outer diameter of the guide handle 9 to prevent the guide handle 9 from shaking. In this embodiment, the upper end of the upper cover 8 is located above the guide ball 6 , and the reciprocating space of the guide handle 9 is located in the upper cover 8 .

The rotation of the upper cover 8 along the spherical surface of the guide ball 6 can be achieved by the following methods: a rolling groove 10 is provided between the upper cover 8 and the guide ball 6 , and a number of balls 13 are arranged in the rolling groove 10 . As shown in FIG. 2 and FIG. 6 , the rolling groove 10 extends from one radial end of the guide ball 6 along the spherical surface of the guide ball 6 to the other radial end. The ball 13 can reduce the friction between the upper cover 8 and the guide ball 6 . The rolling grooves 10 can provide guidance for the rolling direction of the balls 13 . Since the rotation of the upper cover 8 is mainly used to drive the traction wire 5 to move, the extending direction of the rolling groove 10 is generally the same as the extending direction of the traction wire 5 . At this time, the traction wire 5 can also use the rolling groove 10 to avoid the lateral deviation of the traction wire 5 .

Example 2:

In Embodiment 1, the traction wire 5 is located on the surface of the guide ball 6. In order to avoid interference with the ball 13, the traction wire 5 needs to be fixed on the lower part of the upper cover 8, that is, the connection point of each traction wire 5 on the upper cover 8 is different, and the welding It is more difficult to find the point. For this reason, the setting position of the traction wire 5 is improved in this embodiment, and the spherical rotation of the upper cover 8 and the guide ball 6 is also changed accordingly: as shown in Figure 7-Figure 10, The upper cover 8 includes a pressure cover 802 and a card cover 7 that is snap-fitted with the bracket 4 . The card cover 7 can ensure that the upper cover 8 does not detach from the guide ball 6 . On the surface, the card cover 7 is covered on the outer circumference of the pressing cover 802 , and at this time, there is no need to provide a radial limiting structure between the upper cover 8 and the guide ball 6 . In this embodiment, a traction handle 801 is also provided. The traction handle 801 is sleeved on the guide ball 6 and rotates along the spherical surface of the guide ball 6 . The outer surface of the pulling handle 801 is provided with a plurality of sliding grooves 8011 suitable for the pulling wire 5 to pass through, and the pressing cover 802 is pressed against the outer surface of the pulling handle 801 . In this embodiment, the chute 8011 for guiding the movement of the traction wire 5 is transferred from the outer circumference of the guide ball 6 to the outer circumference of the traction handle 801, and the traction wire 5 is limited in the chute 8011 through the gland 802. At the same time, on the one hand, The ball 13 in Embodiment 1 is cancelled, the structure is simplified, and the problem of interference between the ball 13 and the traction wire 5 may be avoided in Embodiment 1. On the other hand, the connection points of the four traction wires 5 and the traction handle 801 are It is uniformly arranged on the top of the traction handle 801, and when the guide tube 2 is not bent, the connection point is located on the central axis of the instrument, which greatly reduces the difficulty of finding the welding point when the traction wire 5 and the traction handle 801 are connected. The gland 802 can be fixed on the outer periphery of the traction handle 801 by welding or other detachable connection methods.

Example 3:

On the basis of Embodiment 2, as shown in FIG. 3 and FIG. 9 , the traction handle 801 further includes a guide column 803 arranged at the upper end. The guide column 803 protrudes from the outer surface of the hemispherical traction handle 801 and is in the shape of a hollow column as a whole. The lower part of the guide handle 9 is adapted to pass through the guide post 803 and reciprocate along the axial direction of the guide post 803 . The center hole of the guide post 803 is adapted to the lower part of the guide handle 9 for radially limiting the guide handle 9 to prevent the guide handle 9 from shaking, for example, arranged to abut each other. As shown in FIGS. 6 and 9 , the center hole of the guide post 803 is also provided with an upper boss 8031 that cooperates with the lower boss 902 of the guide handle 9 , and the outer diameter of the lower boss 902 is larger than the inner diameter of the upper boss 8031 . The upper boss 8031 extends radially inward along the inner edge of the guide post 803, the lower boss 902 extends radially outward along the outer edge of the guide handle 9, and the lower boss 902 is located inside the guide post 803 and clamped to the upper boss 8031, so as to limit the height that the guide handle 9 is pulled upward. Under the structure of the one-piece upper cover 8 in Embodiment 1, the guide posts 803 are also integrally provided on the upper cover 8. Under the structure of the split-type upper cover 8 in Embodiment 2, the guide posts 803 can be integrally formed with the traction handle 801.

Example 4:

In the above embodiment, since the push-pull cable 11 is fixedly connected with the guide handle 9, when the guide handle 9 drives the guide tube 2 to produce an angular deflection, the push-pull cable 11 will bend, which will affect the pushing strength of the push-pull cable 11 after frequent use. In addition, both the pulling up and pushing down of the guide handle 9 need to be done manually, and since the instrument is in a vertical state in use, the guide handle 9 will always push the pulling clip 1 downward under the action of gravity, and the operation flexibility is very poor To this end, this embodiment makes the following improvements on the basis of the above-mentioned embodiment: the push-pull cable 11 is sleeved with a spring 14 on the section of the guide handle 9, and there is a suitable axial limit between the guide handle 9 and the guide ball 6 Cavity 12 of spring 14 . The cavity 12 can be enclosed by the guide handle 9 and the guide ball 6. At this time, the guide handle 9 needs to always extend into the guide ball 6; the cavity 12 can also be enclosed by the guide ball 6, the upper cover 8 and the guide ball 6. When the guide handle 9 only needs to extend into the upper cover 8 .

As shown in Figure 6, Figure 8 and Figure 9, the upper part of the guide ball 6 is cut, and a groove 601 for placing one end of the spring 14 is dug out in the center. The other end of the spring 14 is pressed against the end of the guide handle 9, and the cavity 12 It is formed by the guide ball 6, the upper cover 8 and the guide ball 6. The guide handle 9 reciprocates in the guide column 803 of the upper cover 8, that is, the guide handle 9 does not extend into the guide ball 6, and the groove 601 and the guide column 803 together The spring 14 is axially limited. The spring 14 can counteract the bending deformation of the push-pull cable 11 . When the guide handle 9 is pressed down, the spring 14 contracts and the pulling clip 1 opens. When the guide handle 9 is released, under the restoring force of the spring 14, the guide handle 9 automatically pulls up the push-pull cable 11, and the pulling clip 1 gradually closed.

Example 5:

The difference between this embodiment and the above-mentioned embodiment is that the bottom of the guide ball 6 is also fixed with a bracket 4 , and the outer sleeve 3 passes through the bracket 4 and is rotatably connected to the bracket 4 . In this embodiment, the inlet of the outer sleeve 3 is hidden by the arrangement of the bracket 4, the sealing effect is good, and the contact area between the outer sleeve 3 and the guide ball 6 and the adjacent components is increased, and the connection strength is improved. The outer sleeve 3 is rotatably connected to the bracket 4. At this time, when the guide handle 9 is rotated around the central axis of the instrument, the push-pull cable 11, the outer sleeve 3, the guide tube 2 and the pulling clip 1 rotate synchronously, and the rest of the components remain fixed.

Preferably, the upper part of the guide ball 6 has a spherical surface suitable for the rotation of the upper cover 8, and the lower part of the guide ball 6 has a conical structure that is wide in the upper part and narrow in the bottom, and the bracket 4 is fixed on the conical structure to maximize the savings The size of the instrument.

Preferably, the bracket 4 is provided with two hand buckles 401 suitable for the fingers to pass through, and the top of the guide handle 9 is also provided with a finger cover 901 suitable for the thumb to pass through. As shown in FIG. 7 , the top of the guide handle 9 has a U-shaped structure, and the finger cover 901 is hinged on the U-shaped structure, which is convenient for the thumb to rotate. When the push-pull cable 11 is made of steel wire, the push-pull cable 11 can be extended to the guide The top of the handle 9 is riveted to the U-shaped structure.

When using the instrument, the thumb passes through the finger cover 901, and the middle finger and the index finger pass through the two hand buckles 401 respectively. When the thumb rotates (rotates in a direction deviating from the central axis of the instrument), the guide handle 9 will drive the upper cover 8 to rotate, Then the pulling wire 5 is pulled, so that the guide tube 2 is bent under the pulling of the pulling wire 5. The bending direction of the guide tube 2 is opposite to the rotation direction of the thumb. For example, as shown in Figure 8, if the thumb is rotated to the left , then the pulling wire 5 on the right side pulls the right end of the guide tube 2, and then the bending is soft and the right end is bent. When the thumb is pressed in the axial direction, the guide handle 9 drives the push-pull cable 11 to move up and down, so as to realize the opening or closing of the pulling clip 1 . When the thumb is released from the finger cover 901 and the guide handle 9 is directly rotated around the central axis, the synchronous rotation of the pulling clip 1 can be realized.

Preferably, the outer periphery of the upper cover 8 is further provided with a card cover 7 that is fixedly engaged with the bracket 4 . The snap cover 7 can ensure that the upper cover 8 does not detach from the guide ball 6 , and at this time, there is no need to provide a radial limiting structure between the upper cover 8 and the guide ball 6 .

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "inner", "outer", "axial", "radial", etc. is Based on the orientation or positional relationship shown in the drawings, it is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood to limit the present invention.

Furthermore, the terms "first," "second," etc. are used for descriptive purposes only and should not be construed to indicate or imply relative importance.

In this specification, schematic representations of such terms do not necessarily refer to the same embodiment. Furthermore, the particular features, structures, materials or characteristics described may be combined in any suitable manner in one or more embodiments.

Taking the above ideal embodiments according to the present invention as inspiration, and through the above description, relevant personnel can make various changes and modifications without departing from the technical idea of the present invention. The technical scope of the present invention is not limited to the content in the specification, and the technical scope must be determined according to the scope of the claims.

Claims (10)

1. An ESD surgical traction device, comprising: comprises a guide handle (9), an upper cover (8), a guide ball (6), an outer sleeve (3), a guide tube (2) and a traction clamp (1); the outer sleeve (3), the guide tube (2) and the drawing clamp (1) are sequentially connected along the axial direction, the outer sleeve (3) is connected between the guide ball (6) and the guide tube (2), and the upper cover (8) is sleeved on the periphery of the guide ball (6) and can rotate along the spherical surface of the guide ball (6);

the guide handle (9) is connected with a push-pull cable (11), the push-pull cable (11) sequentially penetrates through the upper cover (8), the guide ball (6), the outer sleeve (3) and the guide pipe (2) along the axial direction and then is connected with the traction clamp (1), and the guide handle (9) can reciprocate along the axial direction of the push-pull cable (11); the upper cover (8) is connected with a plurality of traction wires (5), and each traction wire (5) crosses the guide ball (6) along the periphery of the guide ball (6) and is connected with the tail end of the guide tube (2).

2. The ESD surgical traction device of claim 1, wherein: a spring (14) is sleeved on the push-pull cable (11), and a cavity (12) suitable for axially limiting the spring (14) is formed between the guide handle (9) and the guide ball (6).

3. The ESD surgical traction device of claim 1, wherein: the bottom of the guide ball (6) is also fixed with a bracket (4), and the outer sleeve (3) penetrates through the bracket (4) and is rotatably connected with the bracket (4).

4. The ESD surgical traction device of claim 3, wherein: the upper cover (8) further comprises a pressing cover (802) and a clamping cover (7) which is fixedly clamped with the bracket (4).

5. The ESD surgical traction device of claim 4, wherein: the ESD surgery traction apparatus further comprises a traction handle (801) sleeved on the guide ball (6), the traction handle (801) is arranged to rotate along the spherical surface of the guide ball (6), a plurality of sliding grooves (8011) suitable for the traction wires (5) to pass through are formed in the outer surface of the traction handle (801), the pressing cover (802) presses the outer surface of the traction handle (801), and the clamping cover (7) covers the periphery of the pressing cover (802).

6. The ESD surgical traction device of claim 1, wherein: a rolling groove (10) is formed between the upper cover (8) and the guide ball (6), and a plurality of balls (13) are arranged in the rolling groove (10).

7. The ESD surgical traction device of claim 1, wherein: the upper cover (8) further comprises a guide column (803), and the lower part of the guide handle (9) is suitable for penetrating through the guide column (803) and reciprocating along the axial direction of the guide column (803).

8. The ESD surgical traction device of claim 3, wherein: the upper part of the guide ball (6) is provided with a spherical surface suitable for the rotation of the upper cover (8), the lower part of the guide ball (6) is in a conical structure with a wide upper part and a narrow lower part, and the bracket (4) is fixed on the conical structure.

9. The ESD surgical traction device of claim 3, wherein: two hand buckles (401) suitable for fingers to penetrate through are arranged on the bracket (4), and finger sleeves (901) suitable for thumbs to penetrate through are further arranged at the top of the guide handle (9).

10. The ESD surgical traction device of claim 1, wherein: the traction clamp (1) comprises a fixed seat (105) and two groups of jaw assemblies, the fixed seat (105) is fixedly connected with the guide pipe (2), each group of jaw assemblies comprises a pull rod and a jaw, the end parts of the pull rods are hinged to each other, the middle parts of the jaws of the two groups of jaw assemblies are hinged to the guide pipe of the fixed seat (105), and the pull rods of the two groups of jaw assemblies are hinged to the push-pull cable (11) at the same time.

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