CN216221490U

CN216221490U - Positioning probe for low-or mid-position tumor in rectum

Info

Publication number: CN216221490U
Application number: CN202122630712.XU
Authority: CN
Inventors: 林佳锐; 许春彦; 黄利生; 庄业忠; 袁锦鹏
Original assignee: Cancer Hospital of Shantou University Medical College
Current assignee: Cancer Hospital of Shantou University Medical College
Priority date: 2021-10-30
Filing date: 2021-10-30
Publication date: 2022-04-08
Anticipated expiration: 2031-10-30

Abstract

The utility model relates to a positioning probe for a low-position tumor in a rectum, which comprises a probe body and is characterized in that: the device also comprises a hemispherical head made of transparent plastic, a camera, at least one distance sensor and an intestinal canal swelling mechanism; the hemispherical head is arranged at the front end of the probe body; a mounting cavity is arranged in the head part of the hemispherical surface, and the camera and the distance sensor are mounted in the mounting cavity; the intestinal canal swelling mechanism is arranged on the circumference of the probe body and is close to the hemispherical head. The intrarectal mid-low tumor positioning probe can be used for positioning intrarectal mid-low tumors without depending on ultrasonic equipment, so that the equipment cost is greatly reduced, the operation difficulty is reduced, and the intrarectal mid-low tumor positioning precision is improved.

Description

Positioning probe for low-or mid-position tumor in rectum

Technical Field

The utility model relates to a medical probe, in particular to a positioning probe for low-position tumors in rectum.

Background

At present, in the operation process of middle-low rectal cancer, due to the lack of technology and instrument for accurately positioning the position of the tumor lower margin, the positioning and excision of the tumor lower margin can be usually carried out only by the clinical experience of an operator in the operation, so that the operation requirement on the operator is higher, and a certain operation difficulty is improved. Some early rectal cancer patients cannot judge the lower edge of the tumor if the tumor cannot be seen by naked eyes during the operation, and the tumor position can be estimated only according to preoperative examination data. Therefore, the resection range of the tumor can not be accurately determined in the middle-low rectal cancer operation, if the resection range is too large, the residual normal intestinal canal is too short to heal after the operation, and the defecation and defecation control function after the operation is influenced; if the resection range is too small, the tumor is not completely resected, and the recurrence is easily caused, thereby affecting the prognosis.

In order to improve the accuracy of tumor location, most of the hospitals in the first-line city currently adopt puncture equipment with an ultrasonic probe. For example, chinese patent document CN209490029U discloses a 3D positioning device for rectum anal tube, which precisely positions a tumor and marks the distal margin of the tumor, the depth of the tumor-infiltrating intestinal tube, the arc length of the tumor-infiltrating intestinal tube, etc. by using an ultrasonic probe, thereby marking the 3D effect of the tissue to be excised, guiding the operator to precisely position the excision position and excision range during the operation, improving the excision rate of the tumor, reducing unnecessary trauma, and facilitating postoperative recovery of the patient. The chinese patent document CN112716576A also discloses a puncture positioning device, which positions a tumor by an ultrasonic probe, and then adjusts the axial and circumferential positions of a puncture needle catheter, so that a puncture needle in the puncture needle catheter is led out from the puncture needle catheter, and a trace amount of coloring agent is injected into the tumor edge position point by point, thereby completing the accurate positioning of the tumor edge.

However, the tumor locating device with the ultrasonic probe needs to be used together with an ultrasonic device, the whole device is high in price and cannot be popularized in hospitals in non-first-line cities, and the hospitals in the non-first-line cities still need to rely on the experience of operators to determine the approximate position of the tumor during relevant operations. Moreover, the puncture positioning method is easy to cause the puncture of the intestinal canal to cause the pollution in the operation, and even the tumor may spread.

Disclosure of Invention

The utility model aims to provide a positioning probe for a mid-low tumor in rectum, which can position the mid-low tumor in rectum without depending on ultrasonic equipment, greatly reduce equipment cost, reduce operation difficulty and improve positioning accuracy of the mid-low tumor in rectum. The technical scheme is as follows:

the utility model provides a low position tumour location probe in rectum, includes the probe body, its characterized in that: the device also comprises a hemispherical head made of transparent plastic, a camera, at least one distance sensor and an intestinal canal swelling mechanism; the hemispherical head is arranged at the front end of the probe body; a mounting cavity is arranged in the head part of the hemispherical surface, and the camera and the distance sensor are mounted in the mounting cavity; the intestinal canal swelling mechanism is arranged on the circumference of the probe body and is close to the hemispherical head.

The camera is generally a miniature camera, and the distance sensor is generally a miniature distance sensor.

The positioning probe for the low-position tumor in the rectum is usually connected to one end of a light guide fiber, the other end of the light guide fiber is connected with a display, and the condition in the rectum is shot by a camera and fed back to the display. When the multifunctional endoscope is used, the probe can be arranged on an auxiliary dilator which is convenient to enter an anus and extend into a rectum, and the auxiliary dilator is manually pushed to advance the probe in the rectum.

The distance sensor is used for detecting the distance from the lower edge of the tumor, and is generally about 2cm at the lower edge of the tumor in the intrarectal mid-low tumor operation; when the distance sensor detects that the distance is 2cm from the lower edge of the tumor, the probe stops advancing, and the operator can determine the position of the tumor.

The front end of the probe body is a smooth hemispherical head, so that the discomfort of a patient when the probe enters the rectum from the anus of the patient can be reduced, and the probe can move more smoothly in the rectum; the transparent hemispherical head part does not influence the shooting effect of the miniature camera in the rectum. The intestinal tube swelling mechanism is arranged on the probe body, so that the intestinal wall where the probe reaches is swelled, and an operator can judge the specific position of the probe in the rectum according to the swelled position of the intestinal tube, thereby determining the position of the lower edge of the tumor in the rectum.

As a preferable scheme of the present invention, the number of the distance sensors is two, the camera is disposed at the middle position of the hemispherical head, and the two distance sensors are respectively disposed at two sides of the camera.

As a further preferable aspect of the present invention, the intestinal tube swelling mechanism includes a plurality of blunt protrusions provided along a circumferential direction of a front end edge of the probe body. After the probe enters the rectum, the blunt convex part can extrude the intestinal wall to form a bulge on the outer side of the intestinal wall, and an operator can judge the position of the probe in the rectum according to the bulge position of the intestinal wall.

As another further preferable aspect of the present invention, the intestinal tube swelling mechanism includes a plurality of air outlets and one-way valves provided in the respective air outlets, which are provided along the circumferential direction of the front end edge of the probe body. The gas outlet is connected with a gas source outside the trachea, and after the position of the lower edge of the tumor is determined by the probe, the gas is inflated into the intestinal tract through the gas outlet, so that the intestinal tract is inflated, the intestinal tract environment where the probe is located is enlarged, and the condition that the camera can shoot the tumor more clearly is achieved. On the other hand, the swelling position outside the intestinal tract can be seen from the abdominal cavity after the intestinal tract swells, so that an operator can visually see the position of the tumor from the outside.

Compared with the prior art, the utility model has the following advantages:

according to the intrarectal low-level tumor positioning probe, the camera and the distance sensor are arranged in the probe, so that the probe can accurately position the intrarectal low-level tumor without being detected by ultrasonic equipment, and the equipment cost is greatly reduced; and the intestinal canal swelling mechanism is arranged on the probe body, so that the intestinal wall where the probe reaches is swelled, an operator can judge the specific position of the probe in the rectum according to the swelling position of the intestinal canal, the experience of the operator is not required to be relied on, the operation difficulty is reduced, and the positioning precision of the low-level tumor in the rectum is improved.

Drawings

FIG. 1 is a schematic structural diagram of a first embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a second embodiment of the present invention;

wherein, each is marked as: 1-probe body, 2-hemispherical head, 201-installation cavity, 3-camera, 4-distance sensor, 5-blunt convex part and 5' -air outlet.

Detailed Description

The following further describes the preferred embodiments of the present invention with reference to the accompanying drawings.

Example one

As shown in figure 1, the intrarectal mid-low tumor positioning probe comprises a probe body 1, a hemispherical head 2 made of transparent plastic, a camera 3, two distance sensors 4 and an intestinal canal swelling mechanism; the hemispherical head 2 is arranged at the front end of the probe body 1; a mounting cavity 201 is formed in the hemispherical head 2, the camera 3 and the distance sensor 4 are mounted in the mounting cavity 201, the camera 3 is arranged in the middle of the mounting cavity 201, and the two distance sensors 4 are respectively arranged on two sides of the camera 3; the intestine bulging mechanism includes a plurality of blunt protrusions 5 provided along the circumferential direction of the front end edge of the probe body 1 and close to the hemispherical head 2.

When the device is used, the probe is arranged on an auxiliary dilator which is convenient to enter an anus and extend into a rectum, and the auxiliary dilator is manually pushed to enable the probe to advance in the rectum; the probe is usually connected to one end of the light-conducting fiber, the other end of the light-conducting fiber is connected to the display, and the condition in the rectum is shot by the camera 3 and fed back to the display; when the distance sensor 4 detects that the distance is 2cm from the lower edge of the tumor, the probe stops advancing, the blunt convex part 5 can extrude the intestinal wall to form a bulge on the outer side of the intestinal wall, and an operator can judge the position of the probe in the rectum according to the bulge position of the intestinal wall.

Example two

In the case where the other portions are the same as those in the first embodiment, the differences are as follows: as shown in fig. 2, the intestine bulging mechanism includes a plurality of air outlets 5 'provided along the front end edge of the probe body 1 in the circumferential direction and check valves (not shown) provided in the respective air outlets 5'. The air outlet 5 'is externally connected with an air source through an air pipe, after the position of the lower edge of the tumor is determined by the probe, the one-way valve is opened, the air is filled into the intestinal tract through the air outlet 5', the intestinal tract is expanded, the intestinal tract environment where the probe is located is enlarged, and the camera 3 can more clearly shoot the tumor; on the other hand, the swelling position outside the intestinal tract can be seen from the abdominal cavity after the intestinal tract swells, so that an operator can visually see the position of the tumor from the outside.

In addition, it should be noted that the names of the parts and the like of the embodiments described in the present specification may be different, and the equivalent or simple change of the structure, the characteristics and the principle described in the present patent idea is included in the protection scope of the present patent. Various modifications, additions and substitutions for the specific embodiments described may be made by those skilled in the art without departing from the scope of the utility model as defined in the accompanying claims.

Claims

1. The utility model provides a low position tumour location probe in rectum, includes the probe body, its characterized in that: the device also comprises a hemispherical head made of transparent plastic, a camera, at least one distance sensor and an intestinal canal swelling mechanism; the hemispherical head is arranged at the front end of the probe body; a mounting cavity is arranged in the head part of the hemispherical surface, and the camera and the distance sensor are mounted in the mounting cavity; the intestinal canal swelling mechanism is arranged on the circumference of the probe body and is close to the hemispherical head.

2. The endorectal low tumor localization probe of claim 1, wherein: the quantity of the distance sensors is two, the camera is arranged in the middle of the head of the hemispherical surface, and the two distance sensors are respectively arranged on two sides of the camera.

3. The endorectal low tumor localization probe of claim 2, wherein: the intestinal tube swelling mechanism comprises a plurality of blunt convex parts arranged along the circumferential direction of the front end edge of the probe body.

4. The endorectal low tumor localization probe of claim 2, wherein: the intestinal canal swelling mechanism comprises a plurality of air outlets and one-way valves, wherein the air outlets and the one-way valves are circumferentially arranged along the front end edge of the probe body, and the one-way valves are arranged in the corresponding air outlets.