An intraoperative tumor contamination protection device

Abstract

This utility model discloses an intraoperative tumor contamination prevention device, comprising a hollow outer tube, an inner push rod, and a tumor isolation sleeve. The tumor isolation sleeve includes: an isolation sleeve body; and a skeleton disposed on the inner wall of the isolation sleeve body. The skeleton is a retractable and expandable hollow skeleton that can be extended synchronously with the isolation sleeve body. This intraoperative tumor contamination prevention device has a simple structure and is easy to operate. Its tumor isolation sleeve is easily extended and will not collapse after extension, facilitating anastomosis operations and not affecting postoperative bowel function, thus improving surgical success rate and patient satisfaction.

Description

Technical Field

[0001] This utility model relates to the field of medical devices, and in particular to an intraoperative tumor contamination prevention device. Background Technology

[0002] Currently, in the clinical treatment of colorectal cancer, especially sigmoid colon and rectal cancer, the stapler head is often inserted into the proximal end of the tumor through the anus. During this process, the stapler head passes through the tumor, which carries the risk of being contaminated by tumor cells and implanting the tumor elsewhere.

[0003] To address the aforementioned problems, the inventors previously developed an intraoperative tumor contamination prevention device, such as... Figures 1-4 As shown, it includes: a hollow outer tube 1; an inner push rod 2 slidably connected inside the hollow outer tube 1, the front part of the inner push rod 2 having a front cavity 21; and a tumor isolation sleeve 3, the rear part of which is fitted onto the outside of the hollow outer tube 1, and the front part of which is placed inside the front cavity 21 of the inner push rod 2. The rear end of the inner push rod 2 is a push-hand part 22, through which a force is applied to push the inner push rod forward along the hollow outer tube 1. The rear end of the hollow outer tube 1 has a flange 11, and the tumor isolation sleeve 3 is tightly fitted onto the outer wall of the flange 11. The outer wall of the flange 11 is smooth to avoid scratching the tumor isolation sleeve 3 when in contact with it. In use, first insert the hollow outer tube 1 into the anus 4, then push the inner push rod 2 forward along the hollow outer tube 1. As the inner push rod 2 gradually extends forward out of the hollow outer tube 1, the tumor isolation sleeve 3 placed in the front cavity 21 of the inner push rod 2 is gradually pushed out; as... Figure 2 and 3 As shown, during the entire process of the tumor isolation sleeve 3 being pushed out, since the rear part of the tumor isolation sleeve 3 is tightly fitted onto the hollow outer tube 1 and remains stationary, only the part of the tumor isolation sleeve 3 that passes near the tumor 5 is contaminated, and the rest of the tumor isolation sleeve 3 will not be contaminated by the tumor during the pushing process.

[0004] However, when the inventors applied the above-mentioned device in the first line of treatment, they found that the device had the following defects during use: 1. In order to make the tumor isolation sleeve fit on the hollow outer tube and be pushed by the inner push rod, it is made of a relatively soft material. However, due to its softness, it is difficult to be quickly pushed out and everted; 2. When the intestine is anastomosed through the tumor isolation sleeve using a stapler, the soft material of the tumor isolation sleeve will collapse and block the intestine, making it difficult for the stapler head to enter the intestine through the tumor isolation sleeve; 3. After the stapler is used for anastomosis, the tumor isolation sleeve will remain in the intestine, which will affect intestinal function to a certain extent and cause discomfort to the patient. Summary of the Invention

[0005] The purpose of this invention is to overcome the problems existing in the prior art and provide an intraoperative tumor contamination protection device with a simple structure and convenient operation. Its tumor isolation sleeve is easy to push out and will not collapse after being pushed out, which is conducive to the anastomosis operation and will not affect the patient's intestinal function after treatment, thereby improving the success rate of surgery and patient satisfaction.

[0006] To achieve the above-mentioned objectives of this utility model, the following technical solution is provided:

[0007] An intraoperative tumor contamination protection device includes a hollow outer tube, an inner push rod, and a tumor isolation sleeve. The tumor isolation sleeve includes an isolation sleeve body and a skeleton disposed on the inner wall of the isolation sleeve body. The skeleton is a retractable and expandable hollow skeleton that can be extended synchronously with the isolation sleeve body.

[0008] Preferably, the skeleton is a skeleton with interlaced mesh or holes.

[0009] Preferably, the skeleton is attached to the inner wall of the isolation sleeve body.

[0010] Preferably, the inner wall of the isolation sleeve body is provided with a slot, and the skeleton is embedded in the slot.

[0011] Preferably, it also includes a hollow protective sleeve disposed on the inner wall of the skeleton.

[0012] Preferably, it also includes a pull cord located at the upper end of the tumor isolation sleeve to facilitate its removal from the patient's intestines.

[0013] Preferably, the pull rope is located at the upper end of the isolation sleeve body, frame, or protective sleeve.

[0014] The beneficial effects of this invention are reflected in the following aspects: This invention avoids contamination of the stapler head during the process of passing through the tumor. The tumor isolation sleeve can be quickly pushed out and turned outward by the inner push rod. The stapler head can easily enter the intestine through the tumor isolation sleeve. After the intestine is anastomosed with the stapler, the tumor isolation sleeve can be removed without affecting the patient's intestinal function and improving the patient's comfort. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of an existing intraoperative tumor contamination protection device;

[0016] Figures 2 to 4 This is a schematic diagram of the process of inserting an intraoperative tumor contamination prevention device through the anus into the proximal end of the tumor using existing technology.

[0017] Figure 5 This is a schematic diagram of the first structure of the intraoperative tumor contamination protection device of this utility model when the tumor isolation sleeve is in the fully extended state;

[0018] Figure 6 yes Figure 5 The diagram shown is a planar representation of the unfolded skeleton used in the tumor isolation sleeve.

[0019] Figure 7 This is a schematic diagram of the second structure of the tumor isolation sleeve of this utility model when it is in the fully extended state;

[0020] Figure 8 This is a schematic diagram of the third structure of the tumor isolation sleeve of this utility model when it is in the fully extended state;

[0021] Figure 9 This is a schematic diagram of the fourth structure of the tumor isolation sleeve of this utility model when it is in the fully extended state;

[0022] Figure 10 This is a schematic diagram of the tumor isolation sleeve of this utility model being removed after surgery. Detailed Implementation

[0023] This invention provides an intraoperative tumor contamination prevention device, used before the stapler is placed near the tumor to isolate the tumor from the stapler, preventing the stapler head from being contaminated during passage through the tumor. Furthermore, the tumor isolation sleeve can be quickly pushed out and everted when pushed by the inner push rod, allowing the stapler head to easily enter the intestine through the tumor isolation sleeve. After the intestine is anastomosed with the stapler, the tumor isolation sleeve can be removed without affecting the patient's intestinal function, thus improving patient comfort.

[0024] The present invention will now be described in detail with reference to the accompanying drawings. In the following text, the definitions of "front" and "back" are based on the human anus. The direction of travel from the outside of the anus to the inside of the anus is called forward travel; the area in front of this forward travel direction is defined as front, and the area behind this forward travel direction is defined as back.

[0025] The structure of the intraoperative tumor contamination protection device of this utility model is similar to that of the applicant's prior application. Figures 1-4 The structures of the intraoperative tumor contamination protection devices are basically the same, including: a hollow outer tube 1; an inner push rod 2 that is slidably connected inside the hollow outer tube 1, with a front cavity 21 at the front of the inner push rod 2; and a tumor isolation sleeve 3, the rear of which is sleeved outside the hollow outer tube 1, and the front of which is placed inside the front cavity 21 of the inner push rod 2.

[0026] The difference between this application and the aforementioned prior application is that, in order to facilitate the smooth ejection of the tumor isolation sleeve by the inner push rod, this application improves the aforementioned tumor isolation sleeve 3. Specifically, the tumor isolation sleeve can be adopted as follows: Figure 5 The first structure shown includes: an isolation sleeve body 6; and a skeleton 7 disposed on the inner wall of the isolation sleeve body. The skeleton is a retractable and expandable hollow skeleton that can be extended synchronously with the isolation sleeve body, and it has a certain rigidity to support the isolation sleeve body.

[0027] The skeleton can be a skeleton with an interlaced grid (such as...). Figure 6 (As shown), or the skeleton is a skeleton with several mesh holes. During manufacturing, the skeleton can be a shrinkable and expandable skeleton made of titanium metal, or a shrinkable and expandable skeleton made of shape memory metal. The skeleton can be attached to the inner wall of the isolation sleeve body by adhesive or compression molding, or a slot can be provided on the inner wall of the isolation sleeve body, and the skeleton can be embedded in the slot.

[0028] Furthermore, to facilitate the removal of the tumor isolation sheath from the patient's intestines after surgery and to prevent adverse effects on the patient's intestines, such as... Figure 7 As shown, this invention can also, based on the first structure of the tumor isolation sleeve described above, provide a pull rope 9 at the upper end of the tumor isolation sleeve to facilitate its removal from the patient's intestines. This pull rope can be located at the upper edge of the isolation sleeve body or at the upper edge of the skeleton. The end of the pull rope extends downwards from the inside of the tumor isolation sleeve, so that by pulling the pull rope downwards, the tumor isolation sleeve can be pulled out from top to bottom in the opposite direction.

[0029] Since the inner push rod will come into direct contact with the skeleton when it pushes the tumor isolation sleeve, in order to prevent the inner push rod from damaging the skeleton, this utility model can also provide a hollow protective sleeve 8 on the inner wall of the skeleton (e.g., ...) based on the first structure of the tumor isolation sleeve described above. Figure 8 As shown, the protective sleeve can be made of the same material as the isolation sleeve body. During manufacturing, the protective sleeve and the isolation sleeve body can also be molded as one piece, and then the skeleton is placed in the sandwich between the two.

[0030] Similarly, in order to facilitate the removal of the tumor isolation sleeve from the patient's intestines, the present invention may also provide a pull rope on the tumor isolation sleeve with the protective sleeve. The pull rope may be set at the upper edge of the isolation sleeve body, at the upper edge of the skeleton, or at the upper edge of the protective sleeve.

[0031] The following description, in conjunction with the accompanying drawings, describes the process of using the intraoperative tumor contamination protection device of this utility model during surgery:

[0032] Before surgery, such as Figure 1 As shown, the lower end of the tumor isolation sleeve with a relatively large diameter is tightly fitted onto the outer wall of the flange 11 at the rear end of the hollow outer sleeve 1, while keeping the isolation sleeve body away from the outer wall of the outer sleeve. During fitting, the tumor isolation sleeve 3 can be tightly fitted onto the outer wall of the flange 11 by having a diameter smaller than the outer diameter of the flange 11, or by using a fastening ring, or by using other methods to achieve a tight fit, as long as it is convenient to detach the tumor isolation sleeve 3 from the flange 11.

[0033] During surgery, such as Figure 2 As shown, first insert the hollow outer tube 1 into the anus 4, then push the inner push rod 2 forward along the hollow outer tube 1. As the inner push rod 2 gradually extends forward beyond the hollow outer tube 1, the tumor isolation sleeve 3 placed in the anterior cavity 21 of the inner push rod 2 is gradually pushed out; as... Figure 2 and 3 As shown, during the entire process of the tumor isolation sleeve 3 being pushed out, since the rear part of the tumor isolation sleeve 3 is tightly fitted onto the hollow outer tube 1 and remains stationary, only the part of the tumor isolation sleeve 3 that passes near the tumor 5 is contaminated, and the rest of the tumor isolation sleeve 3 will not be contaminated by the tumor during the pushing out process.

[0034] like Figure 4 As shown, after the tumor isolation sleeve 3 is fully pushed out, the tumor isolation sleeve 3 is detached from the flange 11 of the hollow outer tube 1, the hollow outer tube 1 and the inner push rod 2 are removed, and the tumor isolation sleeve 3 is left in the patient's intestine. Under the support of the skeleton, the tumor isolation sleeve will remain in a conical shape in the intestine, with the openings at both ends open and not collapse. The stapler is inserted into the tumor isolation sleeve 3 through the opening. Since the stapler and the tumor are isolated by the tumor isolation sleeve 3, the stapler is prevented from being contaminated when passing through the tumor, thus improving the success rate of the operation.

[0035] After removing the tumor and the tumor protective sleeve 3 near its proximal end, the upper end of the tumor protective sleeve 3 is folded downwards and in the opposite direction by pulling the rope at the top (e.g., Figure 10 (as shown), until it is completely withdrawn from the intestines.

[0036] Although the present invention has been described in detail above, it is not limited thereto. Those skilled in the art can make modifications based on the principles of the present invention. Therefore, all modifications made in accordance with the principles of the present invention should be understood as falling within the protection scope of the present invention.

Claims

1. An intraoperative tumor contamination prevention device, comprising a hollow outer tube, an inner push rod, and a tumor isolation sleeve, characterized in that, The tumor isolation sleeve includes: The isolation sleeve body; A skeleton installed on the inner wall of the isolation sleeve body; The skeleton is a retractable and expandable hollow skeleton that can be extended synchronously with the isolation sleeve body.

2. The intraoperative tumor contamination prevention device according to claim 1, characterized in that, The skeleton is a skeleton with interlaced grids or mesh.

3. The intraoperative tumor contamination prevention device according to claim 1, characterized in that, The skeleton is attached to the inner wall of the isolation sleeve body.

4. The intraoperative tumor contamination prevention device according to claim 1, characterized in that, The inner wall of the isolation sleeve body is provided with a slot, and the skeleton is embedded in the slot.

5. The intraoperative tumor contamination prevention device according to claim 1, characterized in that, It also includes a hollow protective sleeve disposed on the inner wall of the skeleton.

6. The intraoperative tumor contamination prevention device according to any one of claims 1-5, characterized in that, It also includes a pull cord located at the top of the tumor isolation sleeve to facilitate its removal from the patient's intestines.

7. The intraoperative tumor contamination prevention device according to claim 6, characterized in that, The pull rope is located at the upper end of the isolation sleeve body, frame, or protective sleeve.

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