CN110236646A - Trocar for laparoscopic surgery - Google Patents

Abstract

The invention discloses a special trocar for laparoscopic surgery, which comprises a cannula assembly composed of a cannula and a tube head, and a puncture assembly composed of a needle handle, a needle body and a needle point, and the needle body is passed through the sleeve , a plugging assembly for plugging the poking hole is sheathed on the end of the sleeve near the tube head. The invention has the advantages of simple structure, and the plugging component is arranged on the sleeve, which can completely block the poking hole, reduce the chance of tumor cells entering the poking hole in the abdominal wall, and reduce the probability of tumor implantation and metastasis in the poking hole. For infected patients, it can reduce the probability of poking hole infection; the blocking component is provided with antibiotic coating or antibiotic ointment, which can antibacterial and anti-inflammatory the tissue around the poking hole and reduce the chance of poking hole infection.

Description

Trocar for laparoscopic surgery

technical field

The invention relates to medical instruments, in particular to a trocar dedicated to laparoscopic surgery.

Background technique

Compared with traditional surgery, laparoscopic minimally invasive surgery has the advantages of less trauma, less damage to surrounding tissues, faster recovery, and can significantly reduce postoperative pain. Has been widely used. The trocar for laparoscopy is a kind of minimally invasive surgical instrument. During the operation, the trocar is used to establish a surgical channel for minimally invasive instruments to enter and exit the abdominal cavity. The puncture device includes a cannula assembly and a puncture assembly. After the puncture is successful, the puncture assembly is pulled out, and the minimally invasive instrument is passed in and out through the cannula assembly. After the operation is completed, the cannula assembly is pulled out to suture the wound. However, there is a gap between the cannula assembly of the existing puncture device and the poking hole, and the abdominal air and tumor cells enter the poking hole from the gap between the sleeve and the poking hole, thereby causing iatrogenic tumors to grow, increasing Patient pain and medical costs. According to literature reports, the incidence of poking tumor implantation after laparoscopic minimally invasive gallbladder cancer surgery is as high as 14% to 29%, and the poking tumor implantation rate of colorectal cancer is 0.69% to 3.3%. Therefore, how to design a special piercer capable of closing the gap between the poking hole and the cannula is a related problem to be solved urgently by those skilled in the art.

Contents of the invention

The object of the present invention is to provide a puncture device specially used for laparoscopic surgery with sealing function.

To achieve the above object, the present invention takes the following technical solutions:

The puncture device for laparoscopic surgery according to the present invention includes a cannula assembly composed of a cannula and a tube head, and a puncture assembly composed of a needle handle, a needle body and a needle point, and the needle body is inserted into the cannula. A plugging assembly for plugging the poking hole is sheathed on the end of the sleeve near the tube head.

The closure assembly includes a flexible closure bag set on the right end of the casing, the left pocket of the flexible closure bag fits in the gap with the casing, and the right pocket is firmly connected with the casing; the flexible closure A pair of perforations are arranged at intervals on the inner side of the bag, and one end of the drawstring that slides through the perforations is fixedly connected with the left end of the flexible sealing bag, and the other end of the drawstring goes out through the perforations and is tied to the fixing piece at the right end of the casing.

The outer side of the flexible sealing bag is provided with a plurality of support strips extending along its length direction at intervals. The support strips have a double-layer structure, the support strips are filled with antibiotic ointment, and the outer layer of the support strips is provided with Easy to tear marks.

The blocking assembly includes a silica gel blocking block that is fixedly connected to the right end of the sleeve. The silica gel blocking block is coated with an antibiotic coating. The diameter of the right surface of the blocking block is 13-15mm, and the diameter of the left surface is 12mm.

The occlusion component is a flexible bladder fixedly connected to the right end of the sleeve. The outer surface of the flexible bladder is coated with an antibiotic coating. The connecting tube of the flexible bladder is connected to the sleeve through a connecting snap ring. The outer diameter is 12 ~ 15mm.

The antibiotic coating is erythromycin ointment coating or mupirocin ointment coating.

The invention has the advantages of simple structure, and the plugging component is arranged on the sleeve, which can completely block the poking hole, reduce the chance of tumor cells entering the poking hole in the abdominal wall, and reduce the probability of tumor implantation and metastasis in the poking hole. For infected patients, it can reduce the chance of poking hole infection; the antibiotic coating or antibiotic ointment on the plugging component can antibacterial and anti-inflammatory the tissue around the poking hole, reducing the chance of poking hole infection.

Description of drawings

Fig. 1 is a schematic structural view of the present invention.

Fig. 2 is a schematic diagram of the blocking components in Fig. 1 in a stacked state.

Fig. 3 is another structural schematic diagram of the blocking assembly of the present invention.

Fig. 4 is a schematic diagram of the third structure of the blocking assembly of the present invention.

Fig. 5 is an enlarged cross-sectional view along A-A in Fig. 4 .

Detailed ways

As shown in Figure 1, the trocar dedicated to laparoscopic surgery according to the present invention includes a cannula assembly composed of a cannula 1.1, a tube head 1.2, and a puncture assembly composed of a needle handle 2.1, a needle body 2.2, and a needle tip 2.3. The needle body 2.2 is installed in the sleeve 1.1, and the end of the sleeve 1.1 close to the tube head 1.2 is fitted with a sealing assembly for sealing the poking hole.

As shown in Figures 1 and 2, the closure assembly includes a flexible closure bag 3.1 set on the right end of the sleeve 1.1, the left pocket of the flexible closure bag 3.1 is in clearance fit with the sleeve 1.1, and The mouth of the bag is fixedly connected to the casing 1.1; a pair of perforations 3.2 are arranged at intervals on the inner side of the flexible sealing bag 3.1, and one end of the drawstring 3.3 slidingly penetrated in the perforation 3.2 is fixedly connected to the left end of the flexible sealing bag 3.1, and The other end goes out through the perforation 3.2 and binds it on the fixing piece 3.4 at the right end of the casing 1.1; the outer side of the flexible sealing bag 3.1 is provided with a plurality of support strips 3.5 extending along its length direction, and the support strips 3.5 are double Layer structure, the inside of the support bar 3.5 is filled with antibiotic paste, and the outer layer of the support bar 3.5 is provided with easy-to-tear marks 3.6 extending along its length direction. When in use, according to the patient’s condition, cut a poking hole at a suitable location on the patient’s abdomen, then insert the puncture device into the human body with B-ultrasound or X-ray, pull out the puncture component and seal the poking hole, and untie it when blocking The drawstring 3.3 pulls the flexible sealing bag 3.1 outward, and the flexible sealing bag 3.1 moves outward along the casing 1.1 and stacks together at its fixed end to seal the poking hole, and binds the drawstring 3.3 to the fixing piece again On 3.4, fix the stacked flexible sealing bag 3.1; when the flexible sealing bag 3.1 moves outward, the support bar 3.5 is squeezed and ruptured, and the antibiotic ointment inside the supporting bar 3.5 is applied to the outer surface of the flexible sealing bag 3.1, Anti-inflammation of the tissue around the poking hole to reduce the chance of infection; after the operation is completed, untie the drawstring 3.3 and pull out the cannula 1.1. When the cannula 1.1 moves outward, the flexible sealing bag 3.1 goes outward together with the cannula 1.1 move.

As shown in Figure 3, the blocking assembly includes a silicone blocking block 4 fixedly connected to the right end of the casing 1.1, and the silicone blocking block 4 is coated with an antibiotic coating, which is erythromycin ointment coating or mupirocin ointment coating, the silica gel plugging block 4 is a conical structure with a small left and a large right, the diameter of the right surface of the silica gel plugging block 4 is 14mm, and the diameter of its left surface is 12mm; The elasticity of the plugging block 4 turns it outward, so that the silicone plugging block 4 smoothly enters the poking hole. After the force disappears, the silicone plugging block 4 automatically resets and fixes the poking hole. The tube 1.1 is pulled out, and the silicone rubber block is turned inward under force and pulled out of the body together with the sleeve 1.1.

As shown in Figures 4 and 5, the blocking component is a flexible capsule 5.1 fixedly connected to the right end of the sleeve 1.1, and the outer surface of the flexible capsule 5.1 is coated with an antibiotic coating, which is an erythromycin ointment coating Or mupirocin ointment coating, the connecting tube 5.2 of the flexible capsule 5.1 is connected with the sleeve tube 1.1 through the connecting snap ring 5.3, the right end of the connecting tube 5.2 is provided with a shut-off valve 5.4, and the outer diameter of the flexible capsule 5.1 after filling is 12 ~15mm. When in use, place the cannula 1.1 in the body cavity of the patient so that the flexible bladder 5.1 is completely inside the poking hole, insert the nipple of the syringe into the connecting tube 5.2, fill the flexible bladder 5.1 with gas or pure water through the syringe, and close the The cut-off valve 5.4 and the filled flexible capsule 5.1 seal the poking hole; after the operation is completed, open the shut-off valve 5.4, use a syringe to draw out the gas or pure water in the flexible capsule 5.1, and then pull out the cannula 1.1.

Claims (6)

1. a kind of laparoscopic surgery special puncture outfit, including the sheath assembly being made of casing (1.1), tube head (1.2) and by needle The piercing assembly that handle (2.1), needle body (2.2) and needle point (2.3) are constituted, the needle body (2.2) are threaded through described sleeve pipe (1.1) It is interior, it is characterised in that: casing (1.1) end sleeve close to the tube head (1.2) is equipped with the blocking component for blocking stamp card hole.

2. laparoscopic surgery special puncture outfit according to claim 1, it is characterised in that: the blocking component includes suit Flexible blockage bag (3.1) in described sleeve pipe (1.1) right part, left sack and casing (1.1) of the flexible blockage bag (3.1) Clearance fit, right sack are fixedly connected with casing (1.1)；Flexible blockage bag is arranged at intervals with a pair of of perforation on the inside of (3.1) (3.2), drawstring (3.3) one end that sliding is threaded through in the perforation (3.2) is fixedly connected with flexible blockage bag (3.1) left end, The other end is pierced by perforation (3.2) binding on the fixinig plate (3.4) of casing (1.1) right end outward.

3. laparoscopic surgery special puncture outfit according to claim 2, it is characterised in that: the flexible blockage bag (3.1) Outside spacers are provided with a plurality of support bar (3.5) extended along its length, and the support bar (3.5) is double-layer structure, branch Antibiotic cream is filled in stay (3.5), support bar (3.5) outer layer is provided with the easy tear mark (3.6) extended along its length.

4. laparoscopic surgery special puncture outfit according to claim 1, it is characterised in that: the blocking component includes being connected Silica gel plugging block (4) in described sleeve pipe (1.1) right part is coated with antibiotic coating, silica gel on the silica gel plugging block (4) Plugging block (4) is truncated cone-shaped structure left small and right large, and the right surface diameter of silica gel plugging block (4) is 13~15mm, left surface Diameter is 12mm.

5. laparoscopic surgery special puncture outfit according to claim 1, it is characterised in that: the blocking component is to be connected in The flexible pocket (5.1) of described sleeve pipe (1.1) right part, flexible pocket (5.1) lateral surface are coated with antibiotic coating, flexible pocket (5.1) connecting tube (5.2) is connected by Joining clasp (5.3) with casing (1.1), and connecting tube (5.2) end, which is provided with, to be cut Only valve (5.4), the outer diameter after flexible pocket (5.1) is full are 12~15mm.

6. laparoscopic surgery special puncture outfit according to claim 4 or 5, it is characterised in that: the antibiotic coating is Erythromycin ointment coating or mupirocin ointment coating.