Endoscopic tissue grasping device without incision

Abstract

The present invention discloses an incision-free tissue grasping device for endoscope, comprising: a laparoscope releaser, having a clamping rod and a pair of clamping forceps heads arranged at the front end of the clamping rod and capable of opening or closing; a grasper, having a pair of mutually hinged gripping handles and a pair of grasping forceps correspondingly connected to the front end of the pair of gripping handles; a traction line, one end of which is connected to a pair of gripping handles or a gripping handle; a puncture needle, the tail end of which has a needle hole for connecting to the other end of the traction line; wherein, the pair of gripping handles are clamped by the pair of clamping forceps heads, and the pair of gripping forceps are driven by the pair of gripping handles to first open to contain the target tissue and then close to grasp the target tissue; wherein, the traction line is driven by the puncture needle to pull the grasper after grasping the target tissue so as to expose the surgical field of view. The grasping device of the present invention can be applied to the traction of tissues in laparoscope surgery, is simple and easy to operate, does not occupy the surgical incision, reduces the mutual interference between instruments, and has a good surgical field of view.

Description

Technical Field

[0001] The invention relates to the technical field of medical instruments, and in particular to an incision-free tissue grasping device for an endoscope. Background Art

[0002] With the improvement of surgical techniques and the improvement of people's health awareness, more and more surgical procedures can be completed under laparoscopy, and the laparoscopic incisions are getting smaller and smaller. In recent years, single-port surgery has also increased and has become the mainstream. However, in laparoscopic surgery, especially single-port surgery, it is inevitable that multiple surgical instruments enter and exit from one surgical incision, and interference between instruments is inevitable. The traction angle is too concentrated, and it is impossible to achieve angled traction and expose the target position, which greatly affects the fluency and safety of the operation. The usual practice is to increase the length of the laparoscopic incision or add an additional incision, which increases the trauma of the operation to the patient. If the operation is forced, the operation time will be increased invisibly. The extension of the operation time is also a kind of increased trauma to the patient. In addition, single-port laparoscopic or few-port laparoscopic surgery has high requirements for the operator and a long learning curve, which is not conducive to the training of young doctors. To a certain extent, it aggravates the situation that patients have difficulty and high cost of seeing a doctor. Summary of the invention

[0003] The purpose of the present invention is to solve the above problems and to provide an incision-free tissue grasping device for endoscope, which can be used for tissue traction in laparoscopic surgery, is simple and easy to operate, does not occupy the surgical incision, reduces mutual interference between instruments, and has a good surgical field of view.

[0004] To achieve the above-mentioned purpose of the present invention, the present invention provides an incision-free tissue grasping device for endoscope, which includes: a laparoscope releaser, having a clamping rod and a pair of clamping forceps heads arranged at the front end of the clamping rod and capable of opening or closing; a grasper, having a pair of grasping handles hinged to each other and a pair of grasping forceps correspondingly connected to the front ends of the pair of grasping handles; a traction line, one end of which is connected to a pair of grasping handles or a grasping handle; a puncture needle, the tail end of which has a needle hole for connecting to the other end of the traction line; wherein, the pair of grasping handles are clamped by the pair of clamping forceps heads, and the pair of grasping handles drive the pair of grasping forceps to first open to contain the target tissue and then close to grasp the target tissue; wherein, the traction line is driven by the puncture needle to pull the grasper after grasping the target tissue so as to expose the surgical field of view.

[0005] Furthermore, it also includes a quick positioning structure for quickly aligning a pair of clamping forceps of the laparoscope releaser and clamping a pair of gripping handles of the gripper.

[0006] Preferably, the quick positioning structure includes: a pair of bosses arranged on the inner side walls opposite to each other of the pair of clamping pliers; a pair of grooves or a pair of through holes arranged on the pair of gripping handles; wherein the pair of bosses can be inserted into the pair of grooves or the pair of through holes.

[0007] Alternatively, the quick positioning structure comprises: a pair of grooves arranged on the inner side walls opposite to each other of the pair of clamping pliers; a pair of bosses arranged on the outer side walls opposite to each other of the pair of gripping handles; wherein the pair of bosses can be inserted into the pair of grooves.

[0008] Preferably, the boss is a boss with a cylindrical or star-shaped cross section, and the groove is a groove with a cylindrical or star-shaped cross section.

[0009] Wherein, the inner side walls of the pair of grasping forceps of the grasper are arranged with a force-adding structure which facilitates the pair of grasping forceps to grasp the target tissue firmly.

[0010] Preferably, the force-adding structure includes: a recessed structure or a protruding structure arranged on the inner side wall of the first grasping forceps in the pair of grasping forceps; a protruding structure or a recessed structure arranged on the inner side wall of the second grasping forceps in the pair of grasping forceps; wherein the recessed structure is adapted to the protruding structure to increase the force of the pair of grasping forceps to clamp the target tissue, and to ensure that the target tissue is evenly subjected to force when clamped to avoid damage.

[0011] Wherein, the protruding structure includes a convex point or a tooth-shaped protrusion or a wavy protrusion, and the concave structure includes a concave pit or a tooth-shaped groove or a wavy groove matched with the convex point or the tooth-shaped protrusion or the wavy protrusion.

[0012] Preferably, a fixing hole is provided at the rear end of the pair of handles or one of the handles, and one end of the traction line is directly or indirectly fixed to the fixing hole.

[0013] Preferably, the cross section of the puncture needle tip is star-shaped to increase the puncture ability of the needle tip and reduce damage to the target tissue.

[0014] Compared with the prior art, the incision-free tissue grasping device for endoscope of the present invention has the following advantages:

[0015] The incision-free tissue grasping device for endoscope of the present invention can be used for pulling tissues in laparoscopic surgery. The grasper is pulled outside the patient's body cavity away from the operating incision through a traction line, so as to fully expose the surgical field of view, facilitate the doctor's operation, and is simple and easy to operate, does not occupy the surgical incision, and reduces mutual interference between instruments.

[0016] The embodiments of the present invention are described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the incision-free tissue grasping device for endoscope of the present invention (a pair of grasping forceps is in a closed state);

[0018] Figure 2It is a structural schematic diagram of the incision-free tissue grasping device for endoscope of the present invention (a pair of grasping forceps are in an open state);

[0019] Figure 3 It is a structural schematic diagram of the laparoscope releaser of the present invention;

[0020] Figure 4 It is a schematic diagram of the structure of the clamping forceps head and the grasping forceps of the present invention when they are ready to be adapted;

[0021] Figure 5 It is a schematic diagram of the structure of the gripper of the present invention;

[0022] Figure 6 It is a schematic diagram of the structure of the V-shaped groove and the boss provided on the grasping forceps of the present invention;

[0023] Figure 7 It is a structural schematic diagram of a grasping forceps of the present invention provided with a toothed groove;

[0024] Figure 8 It is a structural schematic diagram of a pair of hinged gripping handles of the gripper of the present invention;

[0025] Fig. 9 It is a schematic diagram of the structure of the grasper, the traction line and the puncture needle after being assembled in the present invention;

[0026] Fig.10 It is a front view of the needle head portion of the puncture needle of the present invention;

[0027] Fig.11 yes Fig.10 Left side view of the needle shown;

[0028] Fig.12 is a perspective view of the needle head portion of the puncture needle of the present invention;

[0029] Fig.13 yes Fig.12 Left side view of the needle shown. DETAILED DESCRIPTION

[0030] like Figure 1 , Figure 2 , which are schematic diagrams of a pair of grasping forceps of an incision-free tissue grasping device for endoscope provided by an embodiment of the present invention in two states: closed and opened. Figure 1 , Figure 2It can be known that the incision-free tissue grasping device for endoscope of the present invention comprises: a laparoscope releaser 1, having a clamping rod 13 and a pair of clamping forceps heads 14 arranged at the front end of the clamping rod 13 and capable of opening or closing; a grasper 2, having a pair of grasping handles 21 hinged to each other and a pair of grasping forceps correspondingly connected to the front ends of the pair of grasping handles 21; a traction wire 4, one end of which is connected to a pair of grasping handles or a grasping handle; a puncture needle 5, the tail end of which has a needle hole for connecting to the other end of the traction wire 4; wherein, the pair of grasping handles 21 are clamped by a pair of clamping forceps heads 14, and the pair of grasping handles 21 drive the pair of grasping forceps to first open to contain the target tissue and then close to grasp the target tissue; wherein, the traction wire 4 is driven by the puncture needle 5 to pull the grasper 2 after grasping the target tissue, so as to fully expose the surgical field of view. Specifically, as Figure 1-Figure 3 As shown, the laparoscope releaser 1 of this embodiment includes a handle 11 having a fixed handle and a movable handle, a clamping rod 13 connected to the handle 11, a rotating wheel 12 sleeved at the connection between the clamping rod 13 and the handle 11, and a pair of clamping forceps 14 arranged at the front end of the clamping rod 13. The operator can adjust the angle of the pair of clamping forceps 14 at the front end by rotating the rotating wheel 12 with the index finger, and clamp or open the pair of clamping forceps 14 by moving the movable handle relative to the fixed handle to clamp or open the handle 11, so as to drive the pair of grasping forceps of the grasper 2 to release or grasp the target tissue.

[0031] Among the above-mentioned components of the laparoscope releaser 1, the structures of the other components except the pair of clamping forceps 14 can refer to the structure of the endoscopic separation forceps used in laparoscopic surgery in the prior art, so the structures of these components are not described in detail here.

[0032] In order to quickly align and clamp the pair of gripping handles 21 of the gripping device 2 when the laparoscope releaser 1 clamps the gripping device 2, the present embodiment also has a rapid positioning structure, which can be used as follows: Figure 4 The structure shown in the figure comprises: a pair of bosses 141 arranged on the inner side walls of the pair of clamping pliers 14; a pair of grooves 211 arranged on the pair of gripping handles 21, the grooves being perpendicular to the thickness direction of the gripping handles; wherein the pair of bosses 141 can be inserted into the pair of grooves 211. Alternatively, a pair of through holes (such as Figure 5 As shown in the figure, a pair of bosses 141 can be correspondingly inserted into a pair of through holes. Alternatively, the quick positioning structure of the present invention can also adopt the following structure (not shown in the figure), including: a pair of grooves arranged on the inner side walls opposite to each other of a pair of clamping pliers; a pair of bosses arranged on the outer side walls opposite to each other of a pair of gripping handles; wherein the pair of bosses can be inserted into the pair of grooves.

[0033] During design, the clamping pliers head 14 is as shown in FIG. Figure 4The hook shape shown, that is, the clamping pliers head 14 has a connecting section 143 whose extension direction is consistent with the length extension direction of the clamping rod 13 and a vertical section 142 vertically connected to the front end of the connecting section 143, and the boss 141 or the groove is arranged on the inner side wall of the vertical section 142 facing the other clamping pliers head, and the protruding direction of the boss 141 or the recessed direction of the groove is perpendicular to the length extension direction of the connecting section 143.

[0034] By inserting the boss into the groove or through hole, the laparoscope releaser 1 can quickly align and clamp the pair of gripping handles 21 of the gripper 2, thereby improving the surgical efficiency. In order to further improve the positioning speed and accuracy when the pair of clamping forceps 14 clamp the pair of gripping handles 21, the boss of this embodiment can be made of a magnetic material, such as a magnet, and correspondingly, at least a portion of the element with the groove is made of a material that can be attracted to the magnet, such as iron.

[0035] In order to prevent the pair of clamping forceps 14 of the laparoscope releaser 1 from loosening when clamping the pair of gripping handles 21 of the gripper 2, the boss is a boss with a cylindrical cross section (not shown in the figure), and the groove is a groove with a cylindrical cross section. Figure 4 As shown, the boss is a boss with a star-shaped cross section, and correspondingly, the groove is a groove with a star-shaped cross section.

[0036] Of course, in order to prevent the clamping forceps 14 from loosening when clamping the pair of grasping handles 21, an uneven texture structure, such as a wavy pattern or a toothed pattern, can also be provided on the inner side wall of the clamping forceps 14 for clamping the pair of grasping handles 21. When in use, the laparoscope releaser 1 of this embodiment clamps the grasper 2 outside the body (when the laparoscope releaser 1 clamps the grasper 2, the pair of clamping forceps 14 of the laparoscope releaser 1 are opened to clamp the pair of grasping handles of the grasper 2; then the grasper 2 is sent into the chest cavity through the surgical incision, and when the target position is reached, the handle of the laparoscope releaser 1 is held tightly to close the pair of clamping forceps, so as to drive the pair of grasping forceps to open through the pair of grasping handles, so that the jaws of the pair of grasping forceps contain the target tissue, and then the handle is released, the closing force of the pair of clamping forceps becomes smaller, so that the jaws of the pair of grasping forceps gradually close, so that the target tissue to be grasped can be grasped by the pair of grasping forceps 2. target tissue; after the handle of the laparoscope releaser is completely released, the gripper that grasps the target tissue is separated from the laparoscope releaser, and the laparoscope releaser 1 can be withdrawn from the chest cavity. In this way, subsequent operations can be performed without the need for the laparoscope releaser 1, solving the following problems existing in the prior art during surgery: during surgery, the laparoscope releaser 1 needs to be inserted into the incision all the time, and multiple surgical instruments enter and exit the same incision together, thereby causing operational interference between multiple surgical instruments; or, multiple incisions are required for multiple surgical instruments to enter and exit, increasing the trauma caused to the patient by multiple incisions, which is not conducive to the patient's physical recovery.

[0037] After the grasper 2 of this embodiment is sent into the chest cavity by the laparoscope releaser, in addition to grasping the target tissue in the patient's chest cavity, it can also connect the traction line 4 and the puncture needle 5, so that the puncture needle 5 can drive the traction line 4 to pass through the patient's body cavity, and then pull the grasper 2 outside the patient's body through the traction line, so as to pull the target tissue through the grasper 2, fully expose the surgical field of view, and do not occupy the operating incision. The target tissue can be pulled from a direction different from the incision, which is in line with the doctor's normal surgical operating habits, that is, it is in line with the doctor's habit of not operating under laparoscope.

[0038] like Figure 5 As shown, the gripper 2 of this embodiment comprises a pair of gripping handles 21 hinged to each other and a pair of gripping pliers correspondingly connected to the front ends of the pair of gripping handles 21, namely a first gripping pliers 22 and a second gripping pliers 23. The pair of gripping pliers can be clamped and fitted to each other.

[0039] Among them, a force-adding structure is provided on the inner side walls of the pair of grasping forceps (i.e., the surfaces that fit together when clamped together) to facilitate the pair of grasping forceps to firmly grasp the target tissue. The force-adding structure can adopt the following structures, including: a recessed structure provided on the inner side wall of the first grasping forceps 22 in the pair of grasping forceps; a protruding structure provided on the inner side wall of the second grasping forceps 23 in the pair of grasping forceps; or the following structures can be adopted, including: a protruding structure provided on the inner side wall of the first grasping forceps 22 in the pair of grasping forceps; a recessed structure provided on the inner side wall of the second grasping forceps 23 in the pair of grasping forceps. The above-mentioned recessed structure and the protruding structure are matched to increase the force of the pair of grasping forceps to clamp the target tissue, and make the target tissue evenly stressed when being clamped to avoid damage.

[0040] The protruding structure may be a plurality of protruding points (not shown in the figure), or one or more tooth-shaped protrusions, or wavy protrusions, and correspondingly, the recessed structure may be a pit or tooth-shaped groove (such as a groove) adapted to the above-mentioned protruding points, tooth-shaped protrusions or wavy protrusions. Figure 6 as shown) or wavy grooves.

[0041] When designing, you can use Figure 6 In the structure shown in the figure, a tooth-shaped groove 221 extending along the length is provided at the center of the inner side wall of the first grasping forceps 22, and a tooth-shaped protrusion 231 extending along the length is provided on the inner side wall of the second grasping forceps 23, and the protrusion 231 can be inserted into the groove 221. Alternatively, the following method can be adopted: Figure 7 The manner of multiple toothed grooves shown.

[0042] Among them, the pair of handles 21 and the pair of grasping forceps of the grasper 2 can be made of memory metal respectively. When the pair of handles 21 are clamped by the laparoscope releaser, the pair of grasping forceps open, and after the pair of grasping forceps grasp the target tissue and the laparoscope releaser is withdrawn from the chest cavity, the pair of grasping forceps can automatically close to clamp the target tissue through the closed jaws.

[0043] Alternatively, the pair of gripping handles 21 of the gripper 2 may be formed as follows: Figure 8 The structure shown is hinged together, that is, a pair of gripping handles 21 can be connected together through a hinge shaft, and a spring 24 is mounted on the hinge shaft to close the pair of gripping pliers after opening through the elastic restoring force of the spring 24. The structure of the pair of gripping handles 21 being hinged together can also refer to the hinge structure of clothespins in the prior art and other structures that can make hinged elements automatically close after opening, and will not be repeated here.

[0044] When designing, the handle of this embodiment can be adopted as follows Figure 5 The two-section structure shown is a rear section of the gripper and a front section of the gripper, and the rear section of the gripper and the front section of the gripper are bent, and the gripper connected to the gripper extends forward from the front section of the gripper along the extension direction of the clamping rod. When designing, the gripper extending forward can be extended forward in an arc shape, such as the center of the arc of the gripper is located on the extension line of the entire length of the gripper 2 or below the extension line. Alternatively, the gripper extending forward can be extended forward in a straight line.

[0045] The bosses, grooves or through holes provided on the gripping handles are all provided on the rear section of the gripping handles. In addition, in order to facilitate the connection of the traction line 4 with the gripper 2, the present embodiment further provides a fixing hole 212 (such as Figure 5 As shown, a fixing hole is provided at the rear end of the pair of rear sections of the gripping handles), one end of the traction line 4 is directly or indirectly fixed to the fixing hole 212, for example, one end of the traction line is directly tied to the fixing hole 212, or a connecting ring 3 can be tied and fixed at one end of the traction line 4, and the connecting ring is passed through the fixing hole 212 (as shown in FIG. Fig. 9 shown).

[0046] A puncture needle 5 is connected to the other end of the pull line 4, and the tail end of the puncture needle 5 has a needle hole for connecting with the other end of the pull line 4. When designing, the needle head of the puncture needle 5 can be used as follows Figure 10-13 The structure shown in FIG. 5 is that the needle 51 is conical, and the outer periphery of the cross section of the needle 51 is in the shape of a fine star (e.g. Fig.11 , Fig.13 As shown), that is, the outer wall of the needle head is provided with ridges and grooves at intervals, thereby increasing the sharpness of the puncture needle 5 when puncturing tissue and reducing damage to the tissue.

[0047] During design, the traction line 4 is a single-strand suture line about 30 cm long, and a scale is set every 1 cm on the traction line 4 to facilitate the measurement of the distance between the grasper and the chest wall. The puncture needle 5 can be a sharp needle about 8 cm long. The traction line 4 is driven by the puncture needle 5 to pass through the patient's body cavity, and then the grasper 2 grasping the tissue is pulled by the traction line 4 to expose the surgical field of view.

[0048] Next, the use process of the gripping device of this embodiment is described.

[0049] Grasping process: The laparoscope releaser clamps a pair of handles at the rear end of the grasper outside the patient's body and sends the grasper into the chest cavity through a surgical incision. The handle of the laparoscope releaser is held tightly at the target position to open the pair of graspers at the front end of the grasper. The opened pair of graspers press against the target tissue to be grasped, and then the laparoscope releaser is slowly released, so that the pair of graspers of the grasper can grasp the tissue to be grasped. Completely release the handle of the laparoscope releaser and withdraw the laparoscope releaser from the chest cavity. After holding the puncture needle with a needle holder (a conventional surgical instrument in the prior art) to suture the tissue as required, the puncture needle is penetrated from the chest wall from the inside to the outside in the direction of required traction. The puncture needle brings out part of the traction line, and then the traction line is pulled outside the chest wall to achieve the effect of traction of the tissue.

[0050] Release / removal process: After the traction operation is completed, use scissors to cut the traction line in the chest cavity, extend the laparoscope releaser into the chest cavity and clamp the pair of handles of the grasper, hold the handle of the laparoscope releaser tightly, and the pair of forceps of the grasper will open and release the grasped tissue, and then withdraw the laparoscope releaser and the grasper.

[0051] The gripping device of the present invention is developed to address the following situations in the prior art: currently, endoscopic tissue graspers all need to be operated through an incision, and current endoscopic surgery tends to be single-port or small-port. Multiple surgical instruments entering and exiting the same incision will inevitably interfere with each other, and the traction angle is too concentrated, making it impossible to achieve angled traction and expose the position of the target tissue, increasing the difficulty of the surgery and even the risk of the surgery, which is not conducive to the safe and convenient conduct of the surgery.

[0052] With the gripping device of the present invention, the rear end of the gripper is connected to the puncture needle through a traction line. The puncture needle can be pulled out of the body to pull the tissue without occupying the operating incision, and the tissue can be pulled from a direction different from the incision, thereby achieving the purpose of reducing the length of the surgical incision and reducing the number of incisions. At the same time, it can also pull from the non-surgical incision direction, which conforms to the operating habits of normal surgery, avoids mutual interference between instruments, improves surgical efficiency, and facilitates surgical operations. In addition, the reduction of incisions and surgical instruments can reduce the trauma caused to the patient's body and reduce the patient's medical expenses. The laparoscope releaser quickly aligns and clamps the gripper, which can shorten the operation time and improve work efficiency.

[0053] Although the embodiments of the present invention are described in detail above, the embodiments of the present invention are not limited thereto. Those skilled in the art may modify the embodiments of the present invention based on the principles of the embodiments of the present invention. Therefore, all modifications made in accordance with the principles of the embodiments of the present invention should be understood to fall within the protection scope of the embodiments of the present invention.

Claims

1. An incision-free tissue grasping device for endoscope, characterized in that: include: A laparoscope releaser for clamping a grasper, comprising a clamping rod and a pair of clamping forceps arranged at the front end of the clamping rod and capable of opening or closing to clamp the grasper; A gripper for grasping a target tissue, comprising a pair of gripping handles hinged to each other for being grasped by a pair of gripping forceps heads of a laparoscope releaser, and a pair of grasping forceps correspondingly connected to the front ends of the pair of gripping handles, the gripping handles comprising a bent gripping handle rear section and a gripping handle front section, the grasping forceps being connected to the corresponding gripping handle front section and extending forward from the gripping handle front section along the extension direction of the clamping rod; A traction line used for suturing tissues in the chest cavity and pulling tissues after suturing, one end of which is connected to a pair of gripping handles or the rear section of a gripping handle; A puncture needle used to drive a traction line to suture tissues and, after suturing the tissues, to bring part of the traction line outside the chest wall in the traction direction required by the tissues, wherein the tail end of the puncture needle has a needle hole for connecting with the other end of the traction line; The pair of gripping handles of the grasper are clamped by the pair of clamping forceps of the laparoscope releaser to deliver the grasper into the chest cavity through the incision, and the pair of gripping handles drive the pair of gripping forceps to first open to contain the target tissue and then close to grasp the target tissue; then, the laparoscope releaser is withdrawn from the chest cavity, and the tissue is sutured by a traction line connected to the rear section of the gripping handle and passed through the puncture needle; After tissue suturing, the puncture needle is penetrated through the chest wall in the direction of tissue traction required and part of the traction wire is brought out. The traction wire outside the chest wall is pulled to pull the tissue, expose the surgical field, and avoid mutual interference between surgical instruments.

2. The incision-free tissue grasping device for endoscope according to claim 1, characterized in that: The invention also comprises a quick positioning structure for enabling a pair of clamping forceps of the laparoscope releaser to quickly align and clamp a pair of gripping handles of the gripper.

3. The incision-free tissue grasping device for endoscope according to claim 2, characterized in that: The rapid positioning structure comprises: A pair of bosses disposed on opposite inner side walls of the pair of clamping pliers; A pair of grooves or a pair of through holes provided on the pair of gripping handles; Wherein, the pair of bosses can be inserted into the pair of grooves or the pair of through holes.

4. The incision-free tissue grasping device for endoscope according to claim 2, characterized in that: The rapid positioning structure comprises: A pair of grooves provided on opposite inner side walls of the pair of clamping pliers; A pair of bosses disposed on the outer side walls of the pair of grips facing away from each other; Wherein, the pair of bosses can be inserted into the pair of grooves.

5. The incision-free tissue grasping device for endoscope according to claim 3, characterized in that: The boss is a boss with a cylindrical or star-shaped cross section, and the groove is a groove with a cylindrical or star-shaped cross section.

6. The incision-free tissue grasping device for endoscope according to any one of claims 1 to 5, characterized in that: The inner side walls of the pair of grasping forceps of the grasper are arranged opposite to each other, and a force-adding structure is provided to facilitate the pair of grasping forceps to grasp the target tissue.

7. The incision-free tissue grasping device for endoscope according to claim 6, characterized in that: The force-adding structure comprises: A recessed structure or a protruding structure provided on the inner side wall of a first grasping forceps of the pair of grasping forceps; a protruding structure or a recessed structure provided on the inner side wall of the second grasping forceps of the pair of grasping forceps; The recessed structure is matched with the protruding structure to increase the force of a pair of grasping forceps to clamp the target tissue, and the target tissue is evenly stressed when being clamped to avoid damage.

8. The incision-free tissue grasping device for endoscope according to claim 7, characterized in that: The protruding structure includes a convex point or a tooth-shaped protrusion or a wavy protrusion, and the concave structure includes a concave pit or a tooth-shaped groove or a wavy groove matched with the convex point or the tooth-shaped protrusion or the wavy protrusion.

9. The incision-free tissue grasping device for endoscope according to claim 1, characterized in that: A fixing hole is arranged at the rear end of the pair of gripping handles or one gripping handle, and one end of the traction line is directly or indirectly fixed to the fixing hole.

10. The incision-free tissue grasping device for endoscope according to claim 1, characterized in that: The cross section of the puncture needle is star-shaped to increase the puncture ability of the needle and reduce damage to the target tissue.

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