Measuring and positioning device for lower incisal edge of rectum low tumor in laparoscopic surgery

Abstract

The invention relates to the field of medical apparatus and instruments, and discloses a rectum low tumor insection edge measuring and positioning device in laparoscopic surgery, the rectum low tumor insection edge measuring and positioning device comprises an inflating and positioning device, an inflating channel and a miniature inflating pump, the inflating and positioning device is composed of a silica gel air bag and a retractable supporting framework assembly, the supporting framework assembly is arranged in the silica gel air bag, and the inflating channel is communicated with the inflating and positioning device; the bottom end of the silica gel air bag is fixedly connected with an integrated inflation channel, the bottom end of the inflation channel is fixedly connected with a miniature inflation pump, the inflation positioning device can be fed into the body through the anus, the miniature inflation pump inflates the inflation positioning device through the inflation channel, the inflation positioning device is in an expanded and full state, the peripheral side wall is attached to the intestinal wall, and the supporting framework assembly is matched. The three-dimensional shape in a full-gas state is guaranteed, and a series of problems that in an existing laparoscopic surgery, the accuracy is poor, anastomosis is not easy, or excision is not thorough due to the fact that the specific position is judged through hand touch or an endoscopic surgery instrument serves as a reference object for locating the lower incisal edge of the rectum low tumor in the laparoscopic surgery at present are solved.

Description

Technical Field

[0001] This invention belongs to the field of medical device technology, specifically relating to a device for measuring and locating the lower resection margin of a low rectal tumor during laparoscopic surgery. Background Technology

[0002] In surgical procedures for malignant tumors of the digestive tract, it is often necessary to ensure that the upper and lower resection margins of the tumor are far enough away from the tumor to ensure that the pathological examination of the resection margin is negative, thereby greatly reducing the probability of tumor recurrence at the anastomosis. According to the "Guidelines for the Diagnosis and Treatment of Colorectal Cancer in China (2020 Edition)," the distance between the distal resection margin of the tumor and the tumor has been clarified for different stages of rectal cancer.

[0003] Low rectal tumors are very close to the anus, and the incision site is between the tumor and the anus. Generally, the lower rectal incision margin is 2 cm away from the tumor. If the incision is too close to the tumor, incomplete resection is likely, while if it is too far away, it may damage the anal tissue and affect the sphincter function. Therefore, precise anal preservation means preserving as much of the anal tissue as possible while completely removing the tumor. This is very important for ensuring the patient's postoperative quality of life.

[0004] Currently, surgery for low rectal cancer lacks precise techniques and instruments for locating the tumor resection margin. This leads to reliance on the surgeon's clinical experience for tumor removal, with some procedures using only laparoscopic instruments as reference points to roughly determine the distance or relying solely on manual palpation to pinpoint the exact location. This demands a high level of skill from the surgeon and is quite challenging, as it makes it difficult to accurately determine the resection range and location. If the resection is too large, the remaining normal bowel segments may be too short for easy anastomosis; if the resection is too small, the tumor may not be completely removed, leading to recurrence and affecting prognosis. Therefore, we propose a device for measuring and locating the lower resection margin of low rectal tumors during laparoscopic surgery. Summary of the Invention

[0005] One object of the present invention is to solve at least the above-mentioned problems and to provide at least the advantages that will be described later.

[0006] To achieve the above objectives, the present invention provides a device for measuring and locating the lower resection margin of rectal tumors in laparoscopic surgery, comprising an inflation positioning device, an inflation channel, and a micro inflation pump. The inflation positioning device consists of a silicone air bladder and a retractable support frame assembly. The support frame assembly is disposed inside the silicone air bladder, and an integrated inflation channel is fixedly connected to the bottom end of the silicone air bladder. A micro inflation pump is fixedly connected to the bottom end of the inflation channel.

[0007] Furthermore, both the silicone airbag and the inflation channel are equipped with scale lines.

[0008] Furthermore, a hemispherical guide is fixed at the center of the top of the silicone airbag of the inflation positioning device.

[0009] Furthermore, the silicone airbag is in a contracted shape, and the outer side of the silicone airbag is flush with the side of the hemispherical threading piece.

[0010] Furthermore, the support frame assembly includes a first support arc plate, a second support arc plate, a first limiting crossbar, and a second limiting crossbar. The first support arc plate and the second support arc plate are fixedly connected to the inner walls of both sides of the silicone airbag near the top and bottom ends, respectively. The first support arc plate and the second support arc plate on both sides of the silicone airbag are flush and symmetrical to each other. A support vertical rod is fixedly connected between the upper and lower sets of the first support arc plate and the second support arc plate in the silicone airbag. The first support arc plate and the second support arc plate are fixedly connected to the first limiting crossbar and the second limiting crossbar on the side close to each other, and the outer side walls of the first limiting crossbar and the second limiting crossbar are in contact with each other. A limiting crossbar groove is opened on the outer side wall of the second limiting crossbar corresponding to the side wall of the first limiting crossbar. An integrated limiting slider is fixed at the end of the first limiting crossbar away from the first support arc plate and is snapped into the limiting crossbar groove. The connection between the inner side wall of the silicone airbag and the first and the second support arc plates is at the midpoint of the outer arc surface of the first and the second support arc plates.

[0011] Furthermore, the overall height of the inflatable positioning device after inflation is two centimeters.

[0012] Compared with the prior art, the advantages of the present invention are:

[0013] This laparoscopic rectal tumor lower resection margin measurement and positioning device can be inserted into the body through the anus before surgery, without inflation. During surgery, a miniature air pump inflates the device through the inflation channel, making it fully expanded. The side walls adhere to the intestinal wall, ensuring continuous abdominal pressure during laparoscopic surgery. The entire device is made of elastic materials such as silicone, along with a supporting skeleton component, to ensure its three-dimensional shape when fully inflated. This device solves a series of problems in current laparoscopic surgery, such as poor accuracy, difficulty in anastomosis, or incomplete resection, which are usually determined by touch or laparoscopic instruments. Attached Figure Description

[0014] Figure 1 This is a cross-sectional view of the silicone airbag of the present invention. Figure 1 ;

[0015] Figure 2 This is a schematic diagram of the spray head of the present invention;

[0016] Figure 3 This is a cross-sectional view of the silicone airbag of the present invention. Figure 2 ;

[0017] In the diagram: 1-Inflation positioning device; 2-Inflation channel; 3-Miniature air pump; 4-Silicone airbag; 5-Support frame assembly; 6-Hemispherical guide piece; 7-Scale line; 8-Support arc plate one; 9-Support arc plate two; 10-Limiting horizontal bar one; 11-Limiting horizontal bar two; 12-Limiting horizontal groove; 13-Limiting slider; 14-Supporting vertical bar. Detailed Implementation

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Please see Figure 1 , Figure 2 , Figure 3 A device for measuring and locating the lower resection margin of a low rectal tumor during laparoscopic surgery includes an inflation positioning device 1, an inflation channel 2, and a micro inflation pump 3. The inflation positioning device 1 consists of a silicone air bladder 4 and a retractable support frame assembly 5. The support frame assembly 5 is located inside the silicone air bladder 4, and an integrated inflation channel 2 is fixedly connected to the bottom end of the silicone air bladder 4. The micro inflation pump 3 is fixedly connected to the bottom end of the inflation channel 2.

[0020] Both the silicone airbag 4 and the inflation channel 2 are equipped with scale lines 7 to accommodate different distances between the distal resection margin of the tumor and the tumor when adjusting the device for use.

[0021] The inflation positioning device 1 is fixed with a hemispherical guide 6 at the top center of the silicone airbag 4. The smooth arc surface of the hemispherical guide 6 makes it easy to insert the inflation positioning device 1 and the inflation channel 2 into the human body through the anus. Then, the micro air pump 3 inflates the inflation positioning device 1 through the inflation channel 2. When the silicone airbag 4 is inflated, it will...

[0022] In the initial state, the silicone airbag 4 in the inflation positioning device 1 is in a contracted state, and the outer side of the silicone airbag 4 is flush with the side of the hemispherical guide piece 6.

[0023] The support frame assembly 5 includes a first support arc plate 8, a second support arc plate 9, a first limiting crossbar 10, and a second limiting crossbar 11. The first support arc plate 8 and the second support arc plate 9 are fixedly connected to the inner walls of both sides of the silicone airbag 4 near the top and bottom ends, respectively. The first support arc plate 8 and the second support arc plate 9 on both sides of the silicone airbag 4 are flush and symmetrical. Supporting vertical rods 14 are fixedly connected between the upper and lower sets of the first and second support arc plates 8 and the second support arc plate 9 in the silicone airbag 4. The first support arc plate 8 and the second support arc plate 9 are fixed close to each other on one side. A limiting crossbar 10 and a limiting crossbar 2 11 are connected, and the outer side walls of the limiting crossbar 10 and the limiting crossbar 2 11 are in contact with each other. A limiting cross groove 12 is started on the outer side wall of the limiting crossbar 2 11 corresponding to the limiting crossbar 10. A limiting slider 13 is fixedly installed on the end side of the limiting crossbar 10 away from the supporting arc plate 1 8, which is integrated and snapped into the limiting cross groove 12. The connection between the inner side wall of the silicone airbag 4 and the supporting arc plate 1 8 and the supporting arc plate 2 9 is at the midpoint of the outer arc surface of the supporting arc plate 1 8 and the supporting arc plate 2 9.

[0024] After inflation, the overall height of the inflatable positioning device 1 is two centimeters. The low rectal tumor is very close to the patient's anus, and the cutting position is between the tumor and the anus. Generally, the lower rectal cutting edge is two centimeters away from the tumor.

[0025] Working principle: Before the surgery begins, the inflatable positioning device 1 is in a contracted state, and its overall width is the same as that of the hemispherical guide 6. The smooth arc surface of the hemispherical guide 6 facilitates the insertion of the inflatable positioning device 1 and the inflation channel 2 into the human body through the anus. During the surgery, the micro-inflator 3 inflates the inflatable positioning device 1 through the inflation channel 2. The silicone airbag 4 will begin to expand during inflation. During the expansion process, the two supporting arc plates 8 and 9 on both sides of the silicone airbag 4 will move laterally to both sides. At this time, the upper limit crossbar 10 of the supporting arc plate 8 and the upper limit crossbar 11 of the supporting arc plate 9 will fit together and move laterally, and be engaged by the limiting slider 13. In the limiting transverse groove 12, the separation process of the first supporting arc plate 8 and the second supporting arc plate 9 is limited. Then, the two sets of the first supporting arc plate 8 and the two sets of the second supporting arc plate 9 can provide rigid support for the expanded silicone airbag 4, so that the inflation positioning device 1 is fully expanded after inflation, and its four sides are in contact with the intestinal wall. At the same time, it can continuously ensure the abdominal pressure during laparoscopic surgery. Its height is exactly equal to the distance between the bottom of the tumor and the lower resection margin of the rectum. The practical application of this lower resection margin measurement and positioning device for rectal low tumors solves a series of problems in the existing technology, such as poor accuracy, difficulty in anastomosis or incomplete resection, when using hand touch or laparoscopic surgical instruments as references to determine the specific position.

[0026] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A device for measuring and locating the lower resection margin of a low rectal tumor during laparoscopic surgery, characterized in that: It includes an inflation positioning device (1), an inflation channel (2) and a micro inflation pump (3). The inflation positioning device (1) consists of a silicone airbag (4) and a retractable support frame assembly (5). The support frame assembly (5) is located inside the silicone airbag (4), and an integrated inflation channel (2) is fixedly connected to the bottom end of the silicone airbag (4). The micro inflation pump (3) is fixedly connected to the bottom end of the inflation channel (2).

2. The device for measuring and locating the lower resection margin of a low rectal tumor during laparoscopic surgery according to claim 1, characterized in that: Both the silicone airbag (4) and the inflation channel (2) are provided with scale lines (7).

3. The device for measuring and locating the lower resection margin of a low rectal tumor during laparoscopic surgery according to claim 1 or 2, characterized in that: The inflation positioning device (1) is fixed with a hemispherical guide (6) at the top center of the silicone airbag (4).

4. The device for measuring and locating the lower resection margin of a low rectal tumor during laparoscopic surgery according to claim 1 or 2, characterized in that: The silicone airbag (4) is in a contracted shape, and the outer side of the silicone airbag (4) is flush with the side of the hemispherical threading piece (6).

5. The device for measuring and locating the lower resection margin of a low rectal tumor during laparoscopic surgery according to claim 4, characterized in that: The supporting frame assembly (5) includes a first supporting arc plate (8), a second supporting arc plate (9), a first limiting crossbar (10), and a second limiting crossbar (11). The first supporting arc plate (8) and the second supporting arc plate (9) are fixedly connected to the inner walls of both sides of the silicone airbag (4) near the top and bottom ends, respectively. The first supporting arc plate (8) and the second supporting arc plate (9) on both sides of the silicone airbag (4) are flush and symmetrical to each other. The upper and lower sets of the first supporting arc plate (8) and the second supporting arc plate (9) in the silicone airbag (4) are fixedly connected to each other by a vertical supporting rod (14). The first supporting arc plate (8) and the second supporting arc plate (9) are close to each other on one side. A limiting crossbar 1 (10) and a limiting crossbar 2 (11) are fixedly connected, and the outer side walls of the limiting crossbar 1 (10) and the limiting crossbar 2 (11) are attached to each other. A limiting crossbar groove (12) is opened on the outer side wall of the limiting crossbar 2 (11) corresponding to the one attached to the limiting crossbar 1 (10). A limiting slider (13) is fixedly installed at the end of the limiting crossbar 1 (10) away from the supporting arc plate 1 (8) and is integrated and snapped into the limiting crossbar groove (12). The connection between the inner side wall of the silicone airbag (4) and the supporting arc plate 1 (8) and the supporting arc plate 2 (9) is at the midpoint of the outer arc surface of the supporting arc plate 1 (8) and the supporting arc plate 2 (9).

6. The device for measuring and locating the lower resection margin of a low rectal tumor during laparoscopic surgery according to claim 1 or 2, characterized in that: The overall height of the inflatable positioning device (1) after inflation is two centimeters.

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