CN210228277U

CN210228277U - Power-assisted co-rotating abdominal wall puncture double cannula

Info

Publication number: CN210228277U
Application number: CN201821399309.2U
Authority: CN
Inventors: Andong Ling; 凌安东; Bin Ling; 凌斌
Original assignee: Hefei Hebo Medical Instrument Co ltd
Current assignee: Hefei Hebo Medical Instrument Co ltd
Priority date: 2018-08-29
Filing date: 2018-08-29
Publication date: 2020-04-03
Anticipated expiration: 2028-08-29

Abstract

The utility model discloses a rotatory abdominal wall puncture double cannula is altogether rotated to helping hand formula, characterized by: the inner sleeve is of a hollow tubular structure, one end of the inner sleeve is a conical pipe, the surface of the inner sleeve is a rotary thread, the middle part of the inner sleeve is a cylindrical pipe, the other end of the inner sleeve is a circular cover, the central part of the circular cover is a small circular hole, butterfly blades which symmetrically extend are arranged on the outer side of the circular cover, and a polygonal bayonet is arranged on the inner side of the circular cover of the inner sleeve and is correspondingly buckled and fixed with a polygonal snap plate of; the outer sleeve is of a hollow tubular structure, the outer side of the outer sleeve is provided with a polygonal clamping plate of the outer sleeve, the center of the outer sleeve is provided with a large circular hole, and a conical tube of the inner sleeve is inserted through an elastic sealing cap of the outer sleeve and the large circular hole; the puncture cone is sealed with the cone rod through the elastic sealing cap of the inner sleeve, the cone head taper is in continuous fit with the rotary screw thread, the base of the puncture cone is pressed during abdominal wall puncture to rotate the butterfly blade which is expanded by the inner sleeve, the outer sleeve is driven to coaxially rotate together, and the outer sleeve spirally and stably penetrates through the abdominal wall and is placed in the abdominal cavity.

Description

Power-assisted co-rotating abdominal wall puncture double cannula

Technical Field

The invention relates to an operation auxiliary device, which is used for safely establishing a cannula passage with a large caliber at a small incision part of an abdominal wall in laparoscopic operation.

Background

The small incision of the abdominal wall is forcibly expanded in a short time due to the elastic action of skin, subcutaneous fat and muscles of the abdominal wall, namely, a smooth large channel communicated with the abdominal cavity is established in the abdominal wall, so that massive tissues or organs cut by the laparoscope and massive surgical instruments can safely and smoothly enter and exit the abdominal cavity. The thick channel established by such forced expansion ensures enough smooth space though the caliber is thick, but the incision is still tiny as before due to natural elastic recovery of abdominal wall tissues after the operation.

However, because the diameter of the outer cannula is large, the inner cannula with small diameter is sometimes required to be gradually transited to be suitable for being inserted into the conventional laparoscopic surgical instrument, and therefore, the inner cannula and the outer cannula are required to be used simultaneously after being sleeved, and a puncture cone is usually inserted into the axes of the inner cannula and the outer cannula to be punctured into the abdominal cavity together. However, the outer cannula is thick, the outer cannula is too hard to puncture through thick abdominal wall tissues in a small incision on the abdominal wall skin, the inner cannula at the front end of the puncture cannot be actively rotated, the outer cannula is particularly hard to rotate when the puncture cone is pressed, and the inner cannula at the front end of the puncture does not rotate along with the puncture cone, so that an operator is forced to puncture the abdominal cavity by virtue of the vertical pressing force.

Disclosure of Invention

The invention aims to avoid the defects of the prior art, and the inner sleeve is actively rotated, particularly the force arm when the inner sleeve is rotated is prolonged, the inner sleeve and the outer sleeve are buckled to drive the outer sleeve to coaxially rotate together and spirally and stably enter the abdominal cavity, so that the outer sleeve is forcibly placed in the small incision puncture of the abdominal wall in the laparoscopic surgery, namely, the large channel of the sleeve is established on the abdominal wall more safely, more labor-saving and more convenient.

The invention adopts the following technical scheme for solving the technical problems:

1. the booster type co-rotating abdominal wall puncture double cannula is characterized in that: the inner sleeve (1) is of a hollow tubular structure, one end of the inner sleeve is a conical tube (11), the surface of the inner sleeve is a rotary thread (111), the middle of the inner sleeve is a cylindrical tube (12), the other end of the inner sleeve is a circular cover (13), the central part of the circular cover is a small circular hole (131), the small circular hole is covered with an elastic sealing cap (1311), butterfly blades (132) which are symmetrically extended are arranged on the outer side of the circular cover, and a multi-edge bayonet (133) of the inner sleeve is arranged on the inner side of the circular cover and is mutually buckled and fixed.

2. The booster type co-rotating abdominal wall puncture double cannula is characterized in that: the outer sleeve (2) is of a hollow tubular structure, one end of the outer sleeve is a flat-mouth end (21), the outer side of the other end of the outer sleeve is provided with an outer sleeve polygonal snap plate (22), the center of the outer sleeve is a large circular hole (23), the large circular hole is covered with a second elastic sealing cap (231), a conical tube (11) of the inner sleeve is inserted through the elastic sealing cap (231) of the outer sleeve and the large circular hole (23), and a polygonal bayonet (133) of the inner sleeve is buckled with the outer sleeve polygonal snap plate (22).

3. The booster type co-rotating abdominal wall puncture double cannula is characterized in that: the puncture cone (3) is sealed with the cone rod (32) through the elastic sealing cap (1311) of the inner sleeve and inserted into the small circular hole (131) to penetrate through the inner sleeve and the outer sleeve, the taper of the cone head (31) is continuously matched with the rotary thread (111), the butterfly blade (132) which is expanded from the inner sleeve is rotated by pressing the puncture cone base (33) during abdominal wall puncture, and the outer sleeve (2) is driven to coaxially rotate together to spirally and stably penetrate through the abdominal wall and be placed into the abdominal cavity.

Compared with the prior art, the invention has the beneficial effects that:

1. according to biomechanics and an abdominal wall puncture principle, when the palm of a hand presses the puncture cone base, the thumb can freely push the butterfly leaf, so that the inner sleeve is actively rotated, the thread of the inner sleeve at the front end of the puncture is spirally and stably penetrated through abdominal wall tissues in the abdominal wall and enters the abdominal cavity, and the puncture cone is safer.

2. The circular cover of the inner sleeve and the outward-extending butterfly blades of the inner sleeve are force arms which push the inner sleeve to rotate and extend, so that the inner sleeve is rotated more labor-saving.

3. The inner sleeve is connected with the outer sleeve through the buckle when the abdominal wall is punctured, the outer sleeve rotates along with the inner sleeve, and the outer sleeve can stably penetrate through the abdominal wall and is placed into the abdominal cavity conveniently.

Drawings

FIG. 1 is a schematic view of the inner sleeve structure;

FIG. 2 is a schematic view of the inner sleeve structure;

FIG. 3 is a schematic view of the structure of the outer sleeve;

FIG. 4 is a schematic view of the structure of the outer sleeve;

FIG. 5 is a schematic view of the structure of the puncture cone;

fig. 6 is a schematic view of a combination of a power-assisted co-rotating abdominal wall puncture double cannula.

Detailed Description

The conical tube (11) and the cylindrical tube (12) of the inner sleeve (1) pass through the second elastic sealing cap (231) of the outer sleeve (2) and the large round hole (23) and the outer sleeve sheath tube (24) to penetrate into the outer sleeve (2), the conical part of the conical tube (11) surpasses the flat mouth end (21), and at the moment, the polygonal bayonet (133) in the circular cover (13) of the inner sleeve (1) is matched and buckled with the polygonal snap plate (22) of the outer sleeve (2).

The puncture cone (3) passes through the elastic sealing cap (1311) of the inner sleeve (1) and the cylindrical tube (12) of the inner sleeve (1), and the cone head (31) of the puncture cone (3) exceeds the conical tube (11) of the inner sleeve (1) (figure 6).

The operator holds the combined inner sleeve (1), the outer sleeve (2) and the puncture cone (3) (figure 6), the puncture cone is forcibly inserted into the abdominal cavity from the abdominal skin incision, the palm presses the base (33) of the puncture cone (3), the thumb pushes the butterfly leaves (132) of the inner sleeve (1) to continuously rotate, the rotary thread (111) on the surface of the inner sleeve conical tube (11) at the front end of the puncture enters the abdominal cavity in a spiral manner, and the outer sleeve (2) is driven to rotate and stably penetrate through the abdominal wall in a spiral manner and enter the abdominal cavity due to the fact that the inner sleeve (1) is connected with the outer sleeve (2) in a multi-edge buckling manner.

Withdrawing the inner cannula (1) and the puncture awl (3) after evacuation, and taking the outer cannula (2) retained on the abdominal wall as a large passage for entering and exiting the abdominal cavity.

Claims

1. The booster type co-rotating abdominal wall puncture double cannula is characterized in that: the pipe joint is composed of an inner sleeve (1) and an outer sleeve (2), the inner sleeve (1) is of a hollow tubular structure, one end of the inner sleeve is a conical pipe (11), the surface of the inner sleeve is a rotary thread (111), the middle part of the inner sleeve is a cylindrical pipe (12), the other end of the inner sleeve is a circular cover (13), the central part of the circular cover is a small circular hole (131), the small circular hole is covered with an elastic sealing cap (1311), the outer side of the circular cover is provided with symmetrically extending butterfly blades (132), the inner side of the circular cover is provided with an inner sleeve polygonal bayonet (133) which is mutually buckled and fixed with an outer sleeve polygonal snap plate (22), the outer sleeve (2) is of a hollow tubular structure, one end of the outer sleeve is a flat end (21), the outer side of the other end of the outer sleeve is provided with an outer sleeve polygonal snap plate (22), the center of the inner sleeve is a large circular hole (23), the large circular hole (23) is covered with a, the polygonal bayonet (133) of the inner sleeve (1) is buckled with the polygonal snap-gauge (22) of the outer sleeve (2).

2. The power-assisted co-rotating abdominal wall puncture double cannula of claim 1, wherein: the puncture cone (3) consists of a cone head (31), a cone rod (32) and a base (33), the puncture cone (3) passes through the elastic sealing cap (1311) of the inner sleeve (1) and the cylindrical pipe (12) of the inner sleeve (1), and the cone head (31) of the puncture cone (3) exceeds the conical pipe (11) of the inner sleeve (1).