Trocar with air bag

Abstract

The utility model relates to a trocar with an air bag, belongs to the technical field of medical instruments, and solves the problem that the air bag is easy to separate from the trocar under the action of abdominal wall resistance in the prior art. The trocar with the air bag comprises an outer tube, the air bag and a protective sleeve, the air bag and the protective sleeve are both arranged on the outer tube, the protective sleeve is arranged at one end of the air bag, and the protective sleeve is used for isolating an abdominal wall opening of a patient from the end of the air bag and preventing the abdominal wall from pushing and pulling the air bag. The protective sleeve of the trocar is the conical protective sleeve, the outer diameter of the protective sleeve is gradually enlarged in the direction from the outer wall of the outer tube to the air bag, and in the process that the trocar is inserted into the abdominal wall, the protective sleeve can separate the abdominal wall, isolate the opening of the abdominal wall from the air bag, prevent the abdominal wall from pushing and pulling the air bag and prevent the air bag from being separated from the outer tube.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical equipment, in particular to a trocar with an air bag. Background Art

[0002] The main function of the trocar used in laparoscopic surgery is to construct a channel for laparoscopic instruments (such as lenses, laparoscopic needle holders, etc.). One end of the trocar is inserted into the skin and stuck in the abdominal wall, and the other end is exposed to the external environment. The overall structure of the trocar provides a channel for surgical forceps, ultrasonic scalpels and other surgical instruments to enter the abdominal cavity for surgical operations.

[0003] The existing laparoscopic trocars are not easy to fix. During the operation, the trocars and the abdominal wall are prone to loosening and displacement. During the operation, the trocars are prone to fall out or slide too deep, which affects the surgical operation and delays the operation time. In addition, the trocars are repeatedly inserted into the abdominal wall, resulting in the formation of multiple Y-shaped holes in the abdominal wall, the enlargement of the peritoneal fissure, and the formation of subcutaneous emphysema during the operation. In the prior art, there is a method of adding an air bag to the trocar to close the abdominal wall incision and fix the trocar to the abdominal wall. However, after the trocar is inserted into the abdominal wall, the air bag is affected by the resistance of the abdominal wall and may be separated from the trocar, which affects the surgical operation and delays the operation time.

[0004] Therefore, there is an urgent need for a trocar with an air bag to solve the problem in the prior art that the air bag is separated from the trocar due to the resistance of the abdominal wall. Utility Model Content

[0005] In view of the above analysis, the embodiment of the utility model aims to provide a trocar with an airbag to solve the problem in the prior art that the airbag is easily separated from the trocar due to the resistance of the abdominal wall.

[0006] The purpose of this utility model is mainly achieved through the following technical solutions:

[0007] A trocar with an airbag comprises an outer tube, an airbag and a protective sleeve. The airbag and the protective sleeve are both arranged on the outer tube. The protective sleeve is arranged at one end of the airbag. The airbag is used to fix the outer tube to the patient's abdominal wall, and the protective sleeve is used to prevent the patient's abdominal wall from pushing and pulling the airbag.

[0008] Furthermore, the outer diameter of the protective sleeve gradually increases from the outer wall of the outer tube toward the airbag.

[0009] Furthermore, the protective sleeve is a conical protective sleeve.

[0010] Furthermore, it also includes a sleeve seat, which is connected to the outer tube.

[0011] Furthermore, it also includes an airway tube, which is connected to the airbag.

[0012] Furthermore, it also includes an air guide interface, which is arranged on the sleeve seat, and the air guide tube is connected to the air guide interface.

[0013] Furthermore, the outer tube includes an outer tube body and a slide groove, and the slide groove is arranged on the inner wall of the outer tube body.

[0014] Furthermore, it also includes an extension tube, which is arranged in the outer tube and can slide in the outer tube, and is used to extend the outer tube.

[0015] Furthermore, the extension tube includes an extension tube body and a positioning block. The extension tube body is arranged in the outer tube body, and the positioning block is arranged on the outer wall of the extension tube body, and the positioning block can slide in the slide groove.

[0016] Furthermore, the outer tube also includes a positioning groove, which is arranged on the inner wall of the outer tube body and is connected to and perpendicular to the slide groove. The positioning block can be connected to the positioning groove and slide in the positioning groove; the positioning groove is used to limit the extension tube to prevent the extension tube from retracting into or extending out of the outer tube.

[0017] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0018] (1) The protective sleeve of the trocar of the utility model is a conical protective sleeve, and the outer diameter of the protective sleeve gradually increases from the outer wall of the outer tube to the direction of the airbag. When the trocar of the utility model is inserted into the abdominal wall, the protective sleeve can separate the abdominal wall, isolate the abdominal wall opening from the end of the airbag, and prevent the abdominal wall from pushing and pulling the airbag, thereby preventing the airbag from detaching from the outer tube;

[0019] (2) The air bag of the trocar of the present invention can fix the trocar of the present invention to the abdominal wall of the patient and close the opening of the abdominal wall, thereby preventing the patient from easily forming subcutaneous emphysema during the operation.

[0020] In the present invention, the above-mentioned technical solutions can be combined with each other to achieve more preferred combination solutions. Other features and advantages of the present invention will be described in the following content, and some advantages can be obvious from the description or understood by implementing the present invention. The purpose and other advantages of the present invention can be realized and obtained through the contents specifically pointed out in the text and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are only used for the purpose of illustrating specific embodiments and are not to be considered as limiting the present invention. In the entire drawings, the same reference symbols represent the same components.

[0022] Figure 1 is a schematic diagram of the overall structure of the trocar;

[0023] Figure 2 It is a schematic diagram of the longitudinal section structure of the trocar;

[0024] Figure 3 It is a schematic diagram of the overall structure of the extension tube.

[0025] Reference numerals:

[0026] 1-outer tube; 2-air bag; 3-tube seat; 4-air guide tube; 5-air guide interface; 6-protective sleeve; 7-extension tube; 11-outer tube body; 12-slide groove; 13-positioning groove; 14-positioning recess; 71-extension tube body; 72-positioning block; 73-elastic member. DETAILED DESCRIPTION

[0027] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the present invention and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.

[0028] A specific embodiment of the utility model is as follows Figure 1 As shown, a trocar with a balloon is disclosed, comprising an outer tube 1 and a balloon 2, wherein the balloon 2 is arranged on the outer tube 1. The balloon 2 is used to fix the trocar of this embodiment to the abdominal wall of the patient and to close the abdominal wall opening.

[0029] Preferably, if Figure 2 As shown, the trocar needle of this embodiment further comprises a trocar seat 3, which is connected to the outer tube 1, and the trocar seat 3 is used to connect to a laparoscope and laparoscopic surgical instruments.

[0030] The trocar of the present embodiment further comprises an air guide tube 4 and an air guide interface 5, one end of the air guide tube 4 is connected to the air bag 2, and the other end of the air guide tube 4 is connected to the air guide interface 5, and the air guide interface 5 is arranged on the trocar seat 3. The air guide interface 5 is used to connect with the inflation device, and to guide air into the air bag 2 through the air guide tube 4 to inflate the air bag 2, thereby fixing the trocar of the present embodiment to the abdominal wall and closing the abdominal wall opening.

[0031] Preferably, the outer tube 1 is a circular tube including a central axis.

[0032] Preferably, the sleeve seat 3 is a round tube, and the sleeve seat 3 is coaxial with the outer tube 1 .

[0033] Preferably, the trocar of the present embodiment further comprises a protective sleeve 6, which is arranged at one end of the airbag 2 and fixedly connected to the outer tube 1. The protective sleeve 6 is a conical protective sleeve, and the outer diameter of the protective sleeve 6 gradually expands from the outer wall of the outer tube 1 toward the airbag 2. In the process of inserting the trocar of the present embodiment into the abdominal wall, the protective sleeve 6 can separate the abdominal wall, isolate the abdominal wall opening from the end of the airbag 2, block the abdominal wall from pushing and pulling the airbag 2, and prevent the airbag 2 from detaching from the outer tube 1.

[0034] Preferably, if Figure 1 As shown, the trocar of the present embodiment further comprises an extension tube 7, which is disposed inside the outer tube 1 and can slide inside the outer tube 1. When the trocar of the present embodiment is in use, the length outside the abdominal wall remains unchanged, while the length inside the abdominal wall can be changed, thereby changing the total length of the trocar of the present embodiment to meet the needs of different patients.

[0035] Preferably, the extension tube 7 is coaxial with the outer tube 1 .

[0036] Preferably, if Figure 2 and Figure 3 As shown, the outer tube 1 includes an outer tube body 11 and a slide groove 12; the extension tube 7 includes an extension tube body 71 and a positioning block 72, the extension tube body 71 is arranged in the outer tube body 11, and the slide groove 12 is arranged on the inner wall of the outer tube body 11; the positioning block 72 is arranged on the outer wall of the extension tube body 71, and the positioning block 72 can slide in the slide groove 12. The slide groove 12 is used to limit the extension tube 7 to prevent the extension tube 7 from rotating in the outer tube 1 and causing harm to the patient.

[0037] In order to fix the total length of the trocar of this embodiment, it is necessary to fix the position of the extension tube body 71 and the outer tube body 11. Preferably, the outer tube 1 also includes a positioning groove 13, which is arranged on the inner wall of the outer tube body 11, and is connected to the slide groove 12 and is perpendicular to the slide groove 12. By rotating the extension tube body 71, the positioning block 72 can be connected to the positioning groove 13 and slide in the positioning groove 13. The positioning groove 13 is used to limit the extension tube 7, prevent the extension tube 7 from retracting into or extending out of the outer tube 1, fix the position of the extension tube body 71 and the outer tube body 11, and thus fix the total length of the trocar of this embodiment.

[0038] Preferably, a plurality of positioning grooves 13 are provided, so that the total length of the trocar of this embodiment can be fixedly set to a plurality of lengths to meet the needs of different patients.

[0039] In order to prevent the positioning block 72 from being separated from the positioning groove 13, preferably, the outer tube 1 further includes a positioning recess 14; the extension tube 7 further includes an elastic member 73, the positioning recess 14 is arranged at the bottom of the positioning groove 13, one end of the elastic member 73 is connected to the extension tube body 71, and the other end of the elastic member 73 is connected to the positioning block 72. The elastic member 73 is used to keep the positioning block 72 away from the outer wall of the extension tube body 71, and can connect the positioning block 72 to the positioning recess 14, thereby preventing the extension tube 7 from rotating in the outer tube 1.

[0040] In order to make the positioning block 72 detach from the positioning recess 14 , preferably, the outer wall of the positioning block 72 is spherical or arc-shaped. By rotating the extension tube 71 , the positioning block 72 can press the elastic member 73 and move toward the extension tube 71 , so that the positioning block 72 can detach from the positioning recess 14 .

[0041] In order to reduce the internal space occupied by the extension tube 7, preferably, the extension tube 7 further includes a through hole, which is arranged on the extension tube body 71, and the elastic member 73 is arranged in the through hole, and one end is connected to the through hole. By compressing the positioning block 72, the elastic member 73 can be retracted into the through hole, so as not to occupy the internal space of the extension tube 7, leaving space for the laparoscope and laparoscopic surgical instruments.

[0042] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed in the present invention should be included in the protection scope of the present invention.

Claims

1. A trocar with an air bag, characterized in that: The invention comprises an outer tube (1), an air bag (2) and a protective sleeve (6), wherein the air bag (2) and the protective sleeve (6) are both arranged on the outer tube (1), and the protective sleeve (6) is arranged at one end of the air bag (2). The air bag (2) is used to fix the outer tube (1) to the abdominal wall of a patient, and the protective sleeve (6) is used to prevent the abdominal wall of the patient from pushing or pulling the air bag (2).

2. The trocar with balloon according to claim 1, characterized in that: The outer diameter of the protective sleeve (6) gradually increases from the outer wall of the outer tube (1) toward the air bag (2).

3. The trocar with balloon according to claim 2, characterized in that: The protective sleeve (6) is a conical protective sleeve.

4. The trocar with balloon according to claim 1, characterized in that: It also comprises a sleeve seat (3), which is connected to the outer tube (1).

5. The trocar with balloon according to claim 1, characterized in that: It also includes an airway tube (4), which is connected to the airbag (2).

6. The trocar with balloon according to claim 5, characterized in that: It also comprises an air guide interface (5), wherein the air guide interface (5) is arranged on the sleeve seat (3), and the air guide tube (4) is connected to the air guide interface (5).

7. The trocar with balloon according to claim 1, characterized in that: The outer tube (1) comprises an outer tube body (11) and a slide groove (12), wherein the slide groove (12) is arranged on the inner wall of the outer tube body (11).

8. The trocar with balloon according to claim 7, characterized in that: It also comprises an extension tube (7), which is arranged in the outer tube (1) and can slide in the outer tube (1). The extension tube (7) is used to extend the outer tube (1).

9. The trocar with balloon according to claim 8, characterized in that: The extension tube (7) comprises an extension tube body (71) and a positioning block (72); the extension tube body (71) is arranged inside the outer tube body (11); the positioning block (72) is arranged on the outer wall of the extension tube body (71); and the positioning block (72) can slide inside the slide groove (12).

10. The trocar with balloon according to claim 9, characterized in that: The outer tube (1) further comprises a positioning groove (13), which is arranged on the inner wall of the outer tube body (11) and is connected to the slide groove (12) and is perpendicular to the slide groove (12). The positioning block (72) can be connected to the positioning groove (13) and slide in the positioning groove (13); the positioning groove (13) is used to limit the extension tube (7) to prevent the extension tube (7) from being retracted into or extended out of the outer tube (1).

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