Traction core and traction device for endoscopic surgery

Abstract

The present invention discloses a traction core and a traction device for endoscopic surgery. The traction core includes a core body, and the core body includes a first body and a second body. The second body is located at the rear end of the first body, and the diameter of the second body is greater than the diameter of the first body. The traction core has a structure with different thicknesses. The thicker part is harder and convenient for pushing and pulling, and the thinner part is softer, which is convenient for bending and ensuring the safety of traction. The sliding part is designed in the traction device to facilitate pushing and pulling the traction core during surgery. The traction device is designed to allow the traction core to pass through the outer tube and the third handle in sequence, so that the traction core is convenient to insert and withdraw, and the structure is simple and convenient to operate. The traction device is designed to allow the traction core, inner tube and outer tube to achieve multi-stage telescopic expansion, so that the hardness of the outer tube and the bending of the front end of the traction core can be conveniently adjusted during surgery. The present invention has a reasonable structure, can more safely and effectively achieve tissue traction to expose the surgical field of view, effectively assist in completing endoscopic surgery, and can be widely used in the field of endoscopic surgery.

Description

Technical Field

[0001] The invention relates to the field of endoscopic surgery, in particular to a traction core and a traction device used for endoscopic surgery, wherein the traction core is applied in the traction device. Background Art

[0002] With the development of endoscopic minimally invasive technology, some gastrointestinal lesions, such as early gastrointestinal tumors, can be minimally invasively removed under endoscopy. Compared with surgical operations, endoscopic minimally invasive technology is less invasive and simpler and faster, but it also has limitations. At present, the endoscopes used in endoscopic minimally invasive surgery are soft endoscopes and single-port endoscopes. The operation of the endoscopist is similar to single-arm operation, so it is not as flexible and manipulable as surgical and laparoscopic surgery under multi-port double-arm operation.

[0003] The tissue traction device can solve this limitation very well. By pulling the tissue, the surgical site can be fully exposed, which can improve the efficiency of the operation and reduce the risk of the operation. This will help more endoscopic operating rooms to master and skillfully perform endoscopic minimally invasive surgery, so that more patients can benefit. Although some endoscopic surgical tissue traction devices have appeared clinically, they all have limitations, especially limited scope of use and poor maneuverability, making them difficult to promote and popularize. The device described in this patent can solve these limitations, and effectively assist endoscopic surgery through tissue traction, so that endoscopic surgery can be completed more safely and effectively. Summary of the invention

[0004] In order to solve the above technical problems and assist endoscopic surgery to be completed more safely and effectively, the technical solutions adopted by the present invention are as follows:

[0005] The present invention provides a traction core, which comprises a core body. The core body comprises a first body and a second body. The second body is located at the rear end of the first body, and the diameter of the second body is greater than that of the first body.

[0006] Furthermore, the second body is formed with a second limiting portion, and the diameter of the second limiting portion is greater than the diameter of the second body.

[0007] Furthermore, the first body is formed with a first limiting portion, and the diameter of the first limiting portion is greater than the diameter of the first body.

[0008] Furthermore, a third limiting portion is formed at the rear end of the core body, and a diameter of the third limiting portion is greater than a diameter of the rear end of the core body.

[0009] Furthermore, a large ring is arranged at the front end of the core body, and a small ring is arranged on the large ring.

[0010] Further, a plurality of small rings are arranged at the front end of the core body.

[0011] Furthermore, the hardness of the second body is greater than the hardness of the first body.

[0012] Furthermore, the core body includes a third body, the third body is located at the rear end of the second body, and the diameter of the third body is greater than the diameter of the second body.

[0013] The present invention provides a traction device for endoscopic surgery, which includes a first handle, a sliding part, an outer tube and a traction core. The outer tube is located at the front end of the first handle, a sliding groove for the sliding part to move is formed in the first handle, the traction core passes through the outer tube, and the rear end of the traction core is installed on the sliding part.

[0014] Furthermore, the sliding portion is formed with a first through hole through which the traction core can pass.

[0015] Furthermore, the pulling core can be pulled out from the rear end of the sliding part.

[0016] Furthermore, two first mounting parts are formed at the front end of the sliding part, a fourth limiting part is arranged between the two first mounting parts, the fourth limiting part is formed with a second through hole for the traction core to pass through, and the fourth limiting part prevents the traction core from escaping from the front end of the sliding part.

[0017] Furthermore, a fifth limiting portion is arranged at the rear end of the sliding portion, and the fifth limiting portion prevents the traction core from escaping from the rear end of the sliding portion.

[0018] Furthermore, a second mounting portion is arranged at the front end of the first handle, and the outer tube is arranged at the second mounting portion.

[0019] Furthermore, the first handle includes two first side plates, the two first side plates are arranged opposite to each other, and the area between the two first side plates is a sliding groove.

[0020] Furthermore, the rear ends of the two first side panels are connected as one.

[0021] Furthermore, a bottom cover is arranged at the rear end of the first handle.

[0022] Furthermore, a sixth limiting portion is formed on the inner wall of the front end of the outer tube.

[0023] The invention provides a traction device for endoscopic surgery, which comprises a third handle, an outer tube and a traction core. The outer tube is located at the front end of the third handle, and the traction core passes through the outer tube and the third handle.

[0024] Furthermore, a pull ring is arranged at the rear end of the traction core.

[0025] The invention provides a traction device for endoscopic surgery, which comprises a fourth handle, an outer tube, an inner tube and a traction core, wherein the outer tube is located at the front end of the fourth handle, the inner tube passes through the outer tube and the fourth handle, and the traction core passes through the inner tube.

[0026] Furthermore, a seventh limiting portion is formed at the rear end of the inner tube.

[0027] Furthermore, a hand-held part is installed at the rear end of the traction core.

[0028] Furthermore, the hand-held portion is formed with a mounting groove for fixing the rear end of the traction core.

[0029] Beneficial effects: The traction core has a structure of different thicknesses, the thicker part is harder and convenient for pushing and pulling, and the thinner part is softer and convenient for bending, ensuring the safety of pushing and pulling; the sliding part is designed in the traction device to facilitate pushing and pulling the traction core during surgery; the traction device is designed so that the traction core passes through the outer tube and the third handle in sequence, the structure is simple and convenient to operate, and the traction core can be flexibly pulled out or inserted according to surgical needs; the traction device is designed so that the traction core, inner tube and outer tube can achieve multi-stage telescopic expansion, and the hardness of the outer tube and the bending of the front end of the traction core can be conveniently adjusted during surgery. The present invention has a reasonable structure, can more safely and effectively realize tissue traction to expose the surgical field of view, effectively assist in completing endoscopic surgery, and can be widely used in the field of endoscopic surgery. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural diagram of the traction core in the first embodiment;

[0031] Figure 2 It is a structural diagram of the traction core in the second embodiment;

[0032] Figure 3 It is a structural diagram of the traction core in the third embodiment;

[0033] Figure 4 It is a structural diagram of the traction core in the fourth embodiment;

[0034] Figure 5 A structural diagram of the front end of a traction core having a large ring and a small ring;

[0035] Figure 6 A structural diagram of the front end of a traction core having a plurality of small rings;

[0036] Figure 7 is a structural diagram of the traction device in the first embodiment;

[0037] Figure 8 for Figure 7 Exploded view of the structure in

[0038] Fig. 9 This is a diagram of the internal structure of the traction device in the first embodiment;

[0039] Fig.10 It is an exploded view of the traction device in the second embodiment;

[0040] Fig.11 This is a diagram of the internal structure of the traction device in the second embodiment;

[0041] Fig.12 for Fig.11Partial view of area A in the middle;

[0042] Fig.13 for Fig.11 Partial view of area B in the middle;

[0043] Fig.14 is a structural diagram of the first handle;

[0044] Fig.15 for Fig.14 Left view of the middle structure;

[0045] Fig.16 is a front view of the second mounting portion;

[0046] Fig.17 for Fig.16 Left view of the middle structure;

[0047] Fig.18 for Fig.16 A top view of the structure in the middle;

[0048] Fig.19 is a structural diagram of the second mounting portion;

[0049] Fig. 20 is the front view of the bottom cover;

[0050] Fig.21 for Fig. 20 Left view of the middle structure;

[0051] Fig. 22 for Fig. 20 A top view of the structure in the middle;

[0052] Fig.23 This is the structural diagram of the bottom cover;

[0053] Fig.24 is the front view of the sliding part;

[0054] Fig.25 for Fig.24 Left view of the middle structure;

[0055] Fig.26 for Fig.24 A top view of the structure in the middle;

[0056] Fig. 27 It is the structural diagram of the sliding part;

[0057] Fig.28 It is a structural diagram of the traction device in the third embodiment;

[0058] Fig.29 for Fig.28 Exploded view of the structure in

[0059] Fig.30The internal structure diagram of the traction device in the third embodiment

[0060] Fig.31 is a structural diagram of the traction device in the fourth embodiment;

[0061] Fig.32 for Fig.31 Exploded view of the structure in

[0062] Fig.33 This is a diagram of the internal structure of the traction device in the fourth embodiment;

[0063] Fig.34 for Fig.33 Partial view of the middle C area;

[0064] Fig.35 for Fig.33 Partial view of area D in the middle;

[0065] Fig.36 Schematic diagram of the head structure when the traction device pulls the tissue Figure 1 ;

[0066] Fig.37 Schematic diagram of the head structure when the traction device pulls the tissue Figure 2 ;

[0067] Fig.38 This is a structural diagram of the handheld part. DETAILED DESCRIPTION

[0068] Combine the following Figures 1 to 38 The present invention is further described.

[0069] The present invention relates to a traction core, which is slender, elastic, bendable, and not easily deformed. The traction core includes a core body, which includes a first body 11 and a second body 12, wherein the second body 12 is located at the rear end of the first body 11, and the front end of the first body 11 is the front end of the core body. The length of the second body 12 is greater than the length of the first body 11, and the diameter of the second body 12 is greater than the diameter of the first body 11. The hardness of the second body 12 is greater than the hardness of the first body 11, and the first body 11 is relatively soft and thin, which is convenient for bending and adjusting the position of the traction tissue and preventing damage to the tissue during surgery, and the second body 12 is relatively hard, which is convenient for pushing the traction core during surgery.

[0070] The diameter involved in the present invention can be regarded as the diameter of a circle, or as the diameter of a circumscribed circle where the described structure is located.

[0071] In some embodiments, the second body 12 is formed with a second limiting portion 13 , and the diameter of the second limiting portion 13 is greater than the diameter of the second body 12 .

[0072] In some embodiments, the first body 11 is formed with a first limiting portion 14 , and a diameter of the first limiting portion 14 is greater than a diameter of the first body 11 .

[0073] In some embodiments, a third limiting portion 15 is formed at the rear end of the core body, and the diameter of the third limiting portion 15 is larger than the diameter of the rear end of the core body. In these embodiments, the rear end of the core body is the rear end of the second body 12, and the third limiting portion 15 is located at the rear end of the second body 12.

[0074] In some embodiments, a large ring 16 is arranged at the front end of the core body, and a small ring 17 is arranged at the large ring 16 . The large ring 16 is arranged at the front end of the first body 11 .

[0075] In some embodiments, a plurality of small rings 17 are arranged at the front end of the core body, and each small ring 17 is arranged at the front end of the first body 11 .

[0076] In some embodiments, the core body includes a third body 33, the third body 33 is located at the rear end of the second body 12, the diameter of the third body 33 is greater than the diameter of the second body 12, the hardness of the third body 33 is greater than the hardness of the second body 12, and the traction core is designed to be a multi-section structure with different hardness, which is convenient for pushing the traction core during surgery, effectively achieving traction and ensuring safety during traction. In these embodiments, the rear end of the core body is the rear end of the third body 33, and the third limiter 15 is located at the rear end of the third body 33.

[0077] The present invention relates to a traction device for endoscopic surgery, and the traction device is used for traction of tissue. The traction device comprises a first handle, a sliding part 18, an outer tube 19 and a traction core, wherein the outer tube 19 is located at the front end of the first handle, the outer diameter of the outer tube 19 is small, elastic, bendable, and not easily crushed by pressure, and a sliding groove for the sliding part 18 to move is formed in the first handle, the traction core passes through the outer tube 19, and the rear end of the traction core is installed on the sliding part 18. The movement of the sliding part 18 in the sliding groove can drive the traction core to expand and contract in the outer tube 19, and the first body 11 of the traction core can extend from the front end of the outer tube 19, and the traction core is fixed to the tissue to be pulled by the endoscopic tissue clamp, and the traction core is adjusted in real time by the sliding part 18 to pull or push the tissue of the surgical site to expose the surgical wound.

[0078] In the first embodiment, the second body 12 of the pulling core is formed with a second limiting portion 13 , and the diameter of the second limiting portion 13 is greater than the diameter of the second body 12 .

[0079] In the first embodiment, the sliding portion 18 is formed with a first through hole for the traction core to pass through, and the rear end of the traction core is located in the first through hole, where the rear end of the traction core is the rear end of the second body 12. The diameter of the second limiting portion 13 is smaller than the diameter of the first through hole, so the front end of the traction core can be inserted from the rear end port of the first through hole, and the rear end of the traction core can also be pulled out from the rear end of the sliding portion 18. Since the traction core can be inserted and pulled out in real time, the traction core can be pulled out or inserted as needed during surgery, and after being pulled out, the traction core of other specifications can be replaced to meet the needs of the surgery. In addition, since the traction core has a certain hardness, for some surgical sites, such as the deep colon, in order to ensure the safety of the operation, the traction core can be pulled out first, the outer tube can be placed in the deep colon first, and then the traction core can be inserted into the outer tube, which avoids the risk of transmitting the traction device.

[0080] In the first embodiment, two first mounting portions 20 are formed at the front end of the sliding portion 18, and the two first mounting portions 20 are respectively located on both sides of the front end port of the first through hole. A fourth limiting portion 21 is arranged between the two first mounting portions 20, and the two first mounting portions 20 are respectively formed with third through holes for mounting the ends of the fourth limiting portions 21. The fourth limiting portion 21 is formed with a second through hole for the traction core to pass through, and after the traction core passes through the second through hole, the second limiting portion 13 is located between the front end of the sliding portion 18 and the fourth limiting portion 21. The diameter of the second through hole is smaller than the diameter of the second limiting portion 13, and the fourth limiting portion 21 prevents the traction core from escaping from the front end of the sliding portion 18.

[0081] In the first embodiment, a fifth limiting portion 22 is arranged at the rear end of the sliding portion 18, and the fifth limiting portion 22 is installed at the rear end of the sliding portion 18 by means of a thread, a buckle, or a sleeve connection. The fifth limiting portion 22 is located at the port at the rear end of the first through hole, and the fifth limiting portion 22 prevents the traction core from escaping from the rear end of the sliding portion 18. After removing the fifth limiting portion, the traction core can be pulled out, and after installing the fifth limiting portion, the rear end of the traction core can be restricted in the sliding portion 18.

[0082] In the first embodiment, the fifth limiting portion 22 can be designed as a cap, and a sleeve 36 is formed at the rear end of the sliding portion 18 , and the cap is sleeved on the sleeve 36 .

[0083] In the first embodiment, a second mounting portion 23 is arranged at the front end of the first handle, the outer tube 19 is arranged at the second mounting portion 23, and the rear end of the outer tube 19 is installed at the front end of the second mounting portion 23 by means of threads.

[0084] In the first embodiment, the first handle includes two first side plates 24, which are arranged opposite to each other, and the area between the two first side plates 24 is a sliding groove. The front parts of the two first side plates 24 are fixed to the second mounting part 23 by buckles, and the rear ends of the two first side plates 24 are connected as a whole, and the rear ends of the two first side plates connected as a whole are formed with a through hole for the traction core to pass through.

[0085] In the first embodiment, a bottom cover 25 is arranged at the rear end of the first handle. The bottom cover 25 is a hollow structure. The bottom cover 25 is installed with the rear end of the first handle by snapping or threading. The bottom cover 25 is formed with a through hole for the traction core to pass through.

[0086] In the first embodiment, a large ring 16 is arranged at the front end of the traction core, and a small ring 17 is arranged on the large ring 16. Since the small ring 17 on the large ring 16 is not easy to slip off when clamped by the endoscope clamp, after the traction device is delivered and placed in the body, the small ring 17 is first clamped by the endoscope clamp, and the traction device is quickly delivered to the position of the tissue that needs to be pulled and fixed, so the small ring 17 plays a role of guidance and pre-fixation. Then the large ring 16 is fixed to the tissue that needs to be pulled by the endoscope clamp to achieve further traction.

[0087] In the first embodiment, it can also be designed that a plurality of small rings 17 are arranged at the front end of the pulling core.

[0088] In the second embodiment, the traction device is additionally provided with the following structure on the basis of the first embodiment: a sixth limiting portion 26 is formed on the inner wall of the front end of the outer tube 19, and the sixth limiting portion 26 is an annular structure with a perforation, and the first body 11 passes through the perforation of the sixth limiting portion 26; a first limiting portion 14 is formed on the first body 11, and the diameter of the first limiting portion 14 is larger than the diameter of the first body 11, and the diameter of the first limiting portion 14 is larger than the diameter of the perforation of the sixth limiting portion 26, and the end face of the sixth limiting portion 26 facing the front end port of the outer tube 19 is used to support the first limiting portion 14.

[0089] When the traction device in the second embodiment is in use, the sliding portion 18 is moved backward. After the first limiting portion 14 abuts against the sixth limiting portion 26, the sliding portion 18 continues to be moved backward. The traction core can drive the front end of the outer tube 19 to bend, which can increase the diversity of the directions of traction of the tissue during surgery and achieve effective tissue traction.

[0090] The present invention relates to a traction device for endoscopic surgery, which can be regarded as Embodiment 3. The traction device comprises a third handle 27, an outer tube 19 and a traction core, wherein the outer tube 19 is located at the front end of the third handle 27, and the outer tube 19 is installed at the front end of the third handle 27 by means of a thread, and the traction core passes through the outer tube 19 and the third handle 27, and a pull ring 28 is arranged at the rear end of the traction core, and the traction core can be pulled to freely extend and retract by the pull ring 28.

[0091] In the third embodiment, a large ring 16 is arranged at the front end of the pulling core, and a small ring 17 is arranged at the large ring 16. Alternatively, it can be designed that a plurality of small rings 17 are arranged at the front end of the pulling core.

[0092] In the third embodiment, the core body includes a third body 33, the third body 33 is located at the rear end of the second body 12, the diameter of the third body 33 is greater than the diameter of the second body 12, and the hardness of the third body 33 is greater than the hardness of the second body 12. The traction core is designed to be a multi-section structure with different hardness. The harder second body and the third body facilitate pushing the traction core during surgery, and the softer first body ensures the safety of the traction process.

[0093] The present invention relates to a traction device for endoscopic surgery, which can be regarded as a fourth embodiment. The traction device includes a fourth handle 29, an outer tube 19, an inner tube 30 and a traction core, wherein the outer tube 19 is located at the front end of the fourth handle 29, the inner tube 30 passes through the outer tube 19 and the fourth handle 29, and the traction core passes through the inner tube 30. The inner tube 30 is designed to achieve multi-stage telescopic extension, and the hardness of the outer tube and the bending of the front end of the traction core are adjusted by the telescopic inner tube 30.

[0094] In the fourth embodiment, a seventh limiting portion 31 is formed at the rear end of the inner tube 30 . The diameter of the seventh limiting portion 31 is larger than the diameter of the hole of the fourth handle 29 . The seventh limiting portion 31 prevents the rear end of the inner tube 30 from entering the fourth handle 29 .

[0095] In the fourth embodiment, the rear end of the core body is formed with a third limiting portion 15, and the diameter of the third limiting portion 15 is larger than the diameter of the rear end of the core body. The rear end of the traction core is installed with a hand-held portion 32, and the hand-held portion 32 is formed with a mounting groove 34 for fixing the rear end of the traction core. The side wall of the mounting groove 34 is formed with a step surface 35. After the third limiting portion 15 is inserted from one end of the mounting groove 34, the step surface 35 abuts against the third limiting portion 15, so that the third limiting portion 15 can only be taken out from the end of the mounting groove 34.

[0096] In embodiment four, the core body includes a third body 33, which is located at the rear end of the second body 12. The diameter of the third body 33 is greater than the diameter of the second body 12, and the hardness of the third body 33 is greater than the hardness of the second body 12. The traction core is designed to be a structure with multiple sections of different hardness, which is convenient for pushing the traction core during surgery.

[0097] In the fourth embodiment, a large ring 16 is arranged at the front end of the pulling core, and a small ring 17 is arranged at the large ring 16. Alternatively, it can be designed that a plurality of small rings 17 are arranged at the front end of the pulling core.

[0098] In the traction devices of the above four embodiments, the front end of the traction core is thinner, and the other parts of the traction core are thicker, and a small ring is designed to achieve effective tissue traction.

[0099] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A traction device for endoscopic surgery, characterized in that: The invention comprises a first handle, a sliding portion (18), an outer tube (19) and a pulling core, wherein the outer tube (19) is located at the front end of the first handle, a sliding groove is formed in the first handle for the sliding portion (18) to move, the pulling core passes through the outer tube (19), and the rear end of the pulling core is mounted on the sliding portion (18); The sliding portion (18) is formed with a first through hole through which the traction core can pass; Two first mounting portions (20) are formed at the front end of the sliding portion (18); a fourth limiting portion (21) is arranged between the two first mounting portions (20); the fourth limiting portion (21) is formed with a second through hole for the traction core to pass through; the fourth limiting portion (21) prevents the traction core from falling out of the front end of the sliding portion (18); A fifth limiting portion (22) is arranged at the rear end of the sliding portion (18), and the fifth limiting portion (22) prevents the traction core from escaping from the rear end of the sliding portion (18); The traction core comprises a core body, the core body comprises a first body (11) and a second body (12), the second body (12) is located at the rear end of the first body (11), and the diameter of the second body (12) is greater than the diameter of the first body (11); The second body (12) is formed with a second limiting portion (13), the diameter of the second limiting portion (13) is greater than the diameter of the second body (12), and the diameter of the second through hole is smaller than the diameter of the second limiting portion (13).

2. The traction device for endoscopic surgery according to claim 1, characterized in that: The first body (11) is formed with a first limiting portion (14), and the diameter of the first limiting portion (14) is greater than the diameter of the first body (11).

3. The traction device for endoscopic surgery according to claim 1, characterized in that: A third limiting portion (15) is formed at the rear end of the core body, and the diameter of the third limiting portion (15) is greater than the diameter of the rear end of the core body.

4. The traction device for endoscopic surgery according to claim 1, characterized in that: A large ring (16) is arranged at the front end of the core body, and a small ring (17) is arranged on the large ring (16).

5. The traction device for endoscopic surgery according to claim 1, characterized in that: A plurality of small rings (17) are arranged at the front end of the core body.

6. The traction device for endoscopic surgery according to claim 1, characterized in that: The hardness of the second body (12) is greater than the hardness of the first body (11).

7. The traction device for endoscopic surgery according to claim 1, characterized in that: The core body comprises a third body (33), the third body (33) is located at the rear end of the second body (12), and the diameter of the third body (33) is greater than the diameter of the second body (12).

8. The traction device for endoscopic surgery according to claim 1, characterized in that: The traction core can be pulled out from the rear end of the sliding part (18).

9. The traction device for endoscopic surgery according to claim 1, characterized in that: A second mounting portion (23) is arranged at the front end of the first handle, and the outer tube (19) is arranged on the second mounting portion (23).

10. The traction device for endoscopic surgery according to claim 1, characterized in that: The first handle comprises two first side plates (24), the two first side plates (24) are arranged opposite to each other, and the area between the two first side plates (24) is a sliding groove.

11. The traction device for endoscopic surgery according to claim 10, characterized in that: The rear ends of the two first side plates (24) are connected as one body.

12. The traction device for endoscopic surgery according to claim 1, characterized in that: A bottom cover (25) is arranged at the rear end of the first handle.

13. The traction device for endoscopic surgery according to claim 1, characterized in that: A sixth limiting portion (26) is formed on the inner wall of the front end of the outer tube (19).

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