Snare for local traction exposure of laparoscope

Abstract

The utility model relates to a snare for local traction exposure of a laparoscope. Comprising a sleeve, a silk thread is contained in the sleeve, a puncture needle used for puncturing the abdominal cavity wall to lead the silk thread out is installed at one end of the silk thread, a through thread hole is formed in the tightening fastener, the other end of the silk thread penetrates through the thread hole of the tightening fastener, and then the end of the silk thread is fixedly connected with the tightening fastener. And a lantern ring required for binding a pulled object in the abdominal cavity is formed. According to the snare for local traction exposure of the laparoscope, the convenience of surgical operation is improved, the operation difficulty of traction exposure in the abdominal cavity is reduced, and potential damage to visceral organs in the abdominal cavity in the traction exposure operation process is reduced or avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical devices, and particularly relates to a snare for local traction and exposure in laparoscopic surgery, which is used in minimally invasive laparoscopic surgery. Background Art

[0002] During laparoscopic surgery, for example, in laparoscopic surgery for removing intra-abdominal diseased tissues, it is usually necessary to expose specific tissues in the abdominal cavity within the field of view of the laparoscope, and through sufficient exposure, observe the pathological conditions of local tissues and perform reasonable surgical resection operations. Since the organs, tissues, etc. in the abdominal cavity are stacked together, it is not easy to achieve the purpose of the aforementioned local exposure. In the prior art, the method of traction and exposure is usually adopted to achieve the purpose of fully exposing specific local tissues. Specifically, in the existing operation, a medical-grade silk thread is usually placed into the patient's abdominal cavity, one end of the silk thread is tied to the tissue to be pulled and fastened, and then the other end of the silk thread passes through the abdominal wall of the patient to reach the outside of the abdominal cavity, and the traction effect on the abdominal organs and tissues is achieved by pulling the silk thread outside, so as to achieve the purpose of exposing a specific surgical position.

[0003] The aforementioned operation is highly dependent on the operation skills of the surgeon and has the following problems: First, the silk thread with a puncture needle is not easy to be placed into the patient's abdominal cavity; second, in the narrow space of the abdominal cavity and within the limited field of view of the laparoscope, it is difficult to tie the end of the silk thread to the organs and tissues to be pulled, which is not only time-consuming and laborious, but also there will be a potential problem of puncturing the organs during the process of fastening with surgical forceps, etc.

[0004] In summary, it is necessary to develop and design an auxiliary instrument dedicated to local traction and exposure in the abdominal cavity to solve the aforementioned technical problems. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a snare for local traction and exposure in laparoscopic surgery, which improves the convenience of surgical operation, reduces the operation difficulty of traction and exposure in the abdominal cavity, and reduces or avoids potential harm to abdominal organs during the traction and exposure operation process.

[0006] The technical solution adopted by the utility model is: A snare for local traction and exposure in laparoscopic surgery includes a sleeve, a silk thread is accommodated inside the sleeve, a puncture needle for piercing the abdominal wall to lead the silk thread to the outside is installed at one end of the silk thread, and a tightening buckle is further included. A through wire hole is provided on the tightening buckle, and the other end of the silk thread passes through the wire hole of the tightening buckle and its end is fixedly connected to the tightening buckle to form a loop for binding the object to be pulled in the abdominal cavity.

[0007] Preferably, a groove is provided on the tightening fastener, the wire hole is located at the bottom of the groove, and the end of the sleeve is inserted into the groove of the tightening fastener.

[0008] Preferably, the sleeve is made of medical transparent rigid plastic material, and the tightening fastener is made of medical silica gel material.

[0009] Preferably, the main body part of the puncture needle is located inside the sleeve, and the puncture needle has an exposed section; it also includes a detachable end cap, and the end cap is installed at the end of the sleeve and encloses the exposed section of the puncture needle inside.

[0010] The advantages and positive effects of the present utility model are:

[0011] The present utility model provides a snare for laparoscopic local traction exposure, which is specifically used for locally pulling the internal organs and tissues in the abdominal cavity during laparoscopic surgery to expose the surgical site. Compared with the existing instruments (silk thread and puncture needle) used for local traction exposure, the snare in the present utility model is provided with a puncture needle at one end of the silk thread, a tightening fastener at the other end, and the tightening fastener forms a loop. Therefore, when locally pulling the internal organs and tissues in the abdominal cavity, it is only necessary to put the loop on the object to be pulled in the abdominal cavity and then tighten it, without performing operations such as buckling in the narrow internal space of the abdominal cavity. This significantly simplifies the local traction operation, improves the convenience of the surgical operation, and reduces the operation difficulty of local traction exposure in the abdominal cavity.

[0012] In the present utility model, by providing a sleeve and initially storing the silk thread in the sleeve, the loop part of the snare is more easily inserted into the patient's abdominal cavity through the laparoscopic channel, and at the same time, it is easy to displace the tightening fastener to tighten the loop. On the other hand, since a loop formed by the tightening fastener and the silk thread is used to locally pull the object to be pulled in the abdominal cavity, there is no need to use surgical forceps or the like to perform complex buckling operations in the abdominal cavity. Therefore, when using this snare, potential damage to the internal organs in the abdominal cavity during the traction exposure operation can be reduced or avoided. Description of the Drawings

[0013] Figure 1 is the front view perspective structural schematic diagram of the present utility model;

[0014] Figure 2 is Figure 1 the cross-sectional structural schematic diagram of the tightening fastener in

[0015] Figure 3 is the structural schematic diagram of the present utility model in the use state, showing the state where the snare is inserted into the abdominal cavity and the loop is combined with the object to be pulled in the abdominal cavity;

[0016] Figure 4 is the structural schematic diagram of the present utility model in the use state, showing the state where the puncture needle penetrates through the abdominal wall to the outside.

[0017] In the figure:

[0018] 1. Sleeve; 2. Silk thread; 3. Puncture needle; 4. Tightening fastener; 5. End cap; 6. Collar; 7. Abdominal wall; 8. Object to be pulled in the abdominal cavity; 9. Laparoscope channel. Specific embodiments

[0019] To further understand the content, features and effects of the present invention, the following embodiments are given for detailed description.

[0020] Please refer to Figure 1 , Figure 3 and Figure 4 , the snare for laparoscopic local traction and exposure of the present invention includes a sleeve 1, and the sleeve 1 is made of medical transparent rigid plastic materials such as polyvinyl chloride (PVC), polyethylene (PE), and polypropylene (PP), etc. Its function is to provide accommodation and support for other components.

[0021] A silk thread 2 is accommodated inside the sleeve 1. In the initial state, the silk thread 2 is located inside the sleeve 1 in the bent state shown in Figure 1 . Therefore, the fully extended length of the silk thread 2 is greater than the length of the sleeve 1. When performing the local traction and exposure operation, the silk thread 2 is pulled out from the sleeve 1 and is pulled from the bent state to the taut state. Since the sleeve 1 has structural strength and the silk thread 2 is accommodated inside the sleeve 1 when placed in the abdominal cavity, the relatively soft silk thread 2 can also be smoothly inserted into the abdominal cavity through the laparoscope channel.

[0022] A puncture needle 3 for piercing the abdominal wall 7 to lead the silk thread 2 to the outside is installed at one end of the silk thread 2. As shown in Figure 1 , the main body part of the puncture needle 3 is located inside the sleeve 1, and the puncture needle 3 also has an exposed section, which is convenient for taking out the puncture needle 3 from inside the sleeve 1.

[0023] In this embodiment, it also includes a detachable end cap 5. The end cap 5 is installed at the end of the sleeve 1 and closes the exposed section of the puncture needle 3 inside. The function of setting the end cap 5 is: when the snare is in a non-use state, by closing the exposed section of the puncture needle 3, the potential danger caused by the exposed needle tip is avoided. The end cap 5 can be made of medical silicone material, and the tip of the puncture needle 3 is inserted into the inside of the end cap 5, so that when the end cap 5 is removed, the puncture needle 3 can be taken out from inside the sleeve 1 at the same time.

[0024] It further includes a tightening fastener 4. A through wire hole is provided on the tightening fastener 4. The other end of the silk thread 2 passes through the wire hole on the tightening fastener 4 and its end is fixedly connected to the tightening fastener 4 to form a loop 6 required for binding the pulled object 8 in the abdominal cavity. When binding, the loop 6 of this snare is placed into the patient's abdominal cavity through the laparoscopic channel 9. After placing the pulled object 8 in the abdominal cavity into the loop 6, the silk thread 2 is pulled to displace the tightening fastener 4, and then the loop 6 is tightened. Then, the loop 6 is reliably combined with the pulled object 8 in the abdominal cavity. As described above, the tightening of the loop 6 is completed by the sleeve 1 pushing the tightening fastener 4 to displace when pulling the silk thread 2. Therefore, the radial dimension of the tightening fastener 4 should be larger than the radial dimension of the end of the sleeve 1.

[0025] Please refer to Figure 2 , a groove is provided on the tightening fastener 4, and the wire hole is located at the bottom of the groove. The end of the sleeve 1 is inserted into the groove of the tightening fastener 4. By providing the groove, in the initial state, the tightening fastener 4 can Figure 1 be combined with the end of the sleeve 1 in the state shown in

[0026] In this embodiment, the tightening fastener 4 is made of medical silicone material and has a certain elasticity. At this time, when the end of the sleeve 1 is inserted into its groove, due to the elastic effect, the tightening fastener 4 can be stably combined and will not fall off by itself. At the same time, due to the elastic effect of the tightening fastener 4 itself, when the loop 6 is tightened by pulling the silk thread 2 and moving the position of the tightening fastener 4 to bind the pulled object 8 in the abdominal cavity, the loop 6 can remain in the tightened state and will not loosen by itself.

[0027] It can be imagined that the tightening fastener 4 can also be a tightenable knot on the silk thread 2, that is, a loop 6 can be formed by tying a tightenable knot on the silk thread 2. Since the tightening of the loop 6 is achieved by the sleeve 1 pushing the tightening fastener 4 to displace when pulling the silk thread 2, the radial dimension of the tightenable knot as the tightening fastener 4 should be larger than the radial dimension of the end of the sleeve 1.

[0028] As a consumable used in laparoscopic surgery, this snare can be placed in a sterile package when leaving the factory and taken out for on-site use.

[0029] Production method:

[0030] The main part of the silk thread 2 is Figure 1The bent state shown in the figure is stored in the sleeve 1. After one end of the silk thread 2 passes through the thread hole on the tightening buckle 4, the end is fixedly connected (adhered or welded) to the tightening buckle 4. A puncture needle 3 is installed at the other end of the silk thread 2. The end of the sleeve 1 is inserted and connected to the groove of the tightening buckle 4. The main body part of the puncture needle 3 is placed into the other end of the sleeve 1 and the end cap 5 is installed. Then it is placed into a sterile package.

[0031] For the usage method, please refer to Figure 3 and Figure 4 :

[0032] During the operation, a laparoscopic channel 9 is established on the abdominal wall 7 of the patient. When this snare is needed, first take out the snare from the sterile package. Hold the rear end of the sleeve 1 by hand and insert the front loop 6 and the tightening buckle 4 into the patient's abdominal cavity through the laparoscopic channel 9. Under the vision of the laparoscope, use surgical forceps to place the object 8 being pulled in the abdominal cavity into the loop 6. Then, while removing the end cap 5 externally, take out the puncture needle 3 from the sleeve 1. While holding the sleeve 1 with one hand to keep its position basically unchanged, pull the silk thread 2 outwards. At this time, as the silk thread 2 moves outwards, the tightening buckle 4 moves on the silk thread 2, and the loop 6 gradually tightens and finally fixes on the object 8 being pulled in the abdominal cavity.

[0033] Then loosen the silk thread 2, pull out the sleeve 1 outwards, and separate the tightening buckle 4 from the end of the sleeve 1 (surgical forceps can be used to appropriately clamp the tightening buckle 4 to facilitate separation), so that the silk thread 2 and the puncture needle 3 pass through the sleeve 1. Finally, the sleeve 1 is removed and discarded. Then, the silk thread 2 and the sleeve 1 outside the abdominal cavity are inserted into the patient's abdominal cavity through the laparoscopic channel 9. Under the vision of the laparoscope, use surgical forceps to clamp the puncture needle 3 and puncture it at a suitable position on the abdominal wall 7 to lead out the silk thread 2 to the outside of the patient's abdominal cavity. By pulling the silk thread 2 externally, the object 8 being pulled in the abdominal cavity is locally pulled, and the surgical position is exposed in the vision of the laparoscope.

Claims

1. A snare for laparoscopic local traction exposure, characterized by: The invention comprises a sleeve (1), a silk thread (2) is stored inside the sleeve (1), a puncture needle (3) is installed at one end of the silk thread (2) for piercing the abdominal wall (7) to lead the silk thread (2) to the outside, and a tightening fastener (4) is provided with a through thread hole, and the other end of the silk thread (2) passes through the thread hole of the tightening fastener (4) and its end is fixedly connected to the tightening fastener (4) to form a ring (6) required for binding the pulled object (8) in the abdominal cavity.

2. The snare for laparoscopic local traction exposure as claimed in claim 1, characterized in that: A groove is provided on the tightening fastener (4), the wire hole is located at the bottom of the groove, and the end of the sleeve (1) is inserted into the groove of the tightening fastener (4).

3. The snare for laparoscopic local traction exposure as claimed in claim 2, characterized in that: The sleeve (1) is made of medical transparent hard plastic material, and the tightening fastener (4) is made of medical silicone material.

4. The snare for laparoscopic local traction exposure as claimed in claim 3, characterized in that: The main body of the puncture needle (3) is located inside the sleeve (1), and the puncture needle (3) has an exposed section; it also includes a detachable end cap (5), which is installed at the end of the sleeve (1) and seals the exposed section of the puncture needle (3) inside.

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