CN215839385U

CN215839385U - Puncture dilator

Info

Publication number: CN215839385U
Application number: CN202122164819.XU
Authority: CN
Inventors: 李大可; 叶道明; 张小荣; 李志勇; 褚楚
Original assignee: Sunshine Medical Equipment Co ltd
Current assignee: Sunshine Medical Equipment Co ltd
Priority date: 2021-09-08
Filing date: 2021-09-08
Publication date: 2022-02-18
Anticipated expiration: 2031-09-08

Abstract

The utility model belongs to the technical field of medical appliances, and particularly relates to a puncture dilator which comprises a sleeve and a plurality of dilation pieces capable of puncturing the abdominal wall, wherein the sleeve provides a channel for the puncture dilator to pass in and out; the expansion piece is rotatably arranged at the inner end part of the sleeve; when the puncture outfit is not inserted, the head ends of the expansion pieces are gathered; the puncture outfit forces the head ends of the expansion pieces to open after entering. The dilator is used in cooperation with the puncture outfit after directly puncturing the abdominal wall, when the puncture outfit stretches into the dilator, the dilation piece is opened and then stretched outwards to achieve the dilation effect, and the human body does not need to be filled with CO₂A gas. Operating the apparatus stillThrough the operation of the puncture outfit, the method has the advantages of the traditional suspension laparoscope, and reduces the wound caused by the puncture and lifting of the metal wire on the abdominal wall.

Description

Puncture dilator

Technical Field

The utility model belongs to the technical field of medical instruments, and particularly relates to a puncture dilator.

Background

Minimally invasive surgery refers to performing surgery in a human body through a small opening of about 5 to 12mm on the human body and through modern medical instruments and equipment.

The puncture outfit is a surgical instrument for providing an instrument access channel for minimally invasive surgery, and simultaneously, gas is isolated in the surgical process, so that the air tightness is ensured.

In order to meet the requirement of exposing an operation space in an operation, an inflating device is used for inflating the human body, so that the operation time is increased, and other instruments and equipment are needed. CO currently in use₂Gas, reported to increase the blood carbonic acid concentration in surgical patients, causing risks of hypercapnia, gas embolism, thrombosis, subcutaneous emphysema, and CO₂The gas may increase the activity of tumor cells, increasing the risk of postoperative recurrence of metastases.

The suspended laparoscope is a device in which a metal wire passes through the skin under the lower abdomen, below the midumbilical cord, to the pubic symphysis and then is lifted up subcutaneously. However, the puncture and pulling of the surgical wire can cause a large trauma to the abdominal wall. And the TROCAR still needs to be punctured after suspension, so that the abdominal wall has much trauma and scars.

SUMMERY OF THE UTILITY MODEL

In order to solve the above technical problems, an object of the present invention is to provide a puncture dilator which provides sufficient space for a surgery by pulling the abdominal wall.

In order to achieve the technical purpose, the utility model adopts the following technical scheme:

a puncture dilator comprising:

the sleeve provides a passage for the puncture outfit to enter and exit;

a plurality of abdominal wall pierceable spreader tabs rotatably mounted to the inner end of said cannula; when the puncture outfit is not inserted, the head ends of the expansion pieces are gathered; the puncture outfit forces the head ends of the expansion pieces to open after entering.

Preferably, the expansion piece gradually widens from the tip end to the tail end.

Preferably, the expansion piece further comprises a collar for keeping the head ends of the expansion pieces gathered.

As a preferable technical solution, a fixing groove into which the collar is snapped is provided on an outer side wall of the sleeve.

As a preferable technical scheme, a jaw is arranged at the tail end of the expansion piece, a rotating shaft matched with the jaw is arranged at the inner end part of the sleeve, and the jaw is clamped on the rotating shaft and can rotate around the rotating shaft.

As a preferred technical scheme, a limiting blocking piece is fixedly arranged between the expansion pieces.

Preferably, the expansion pieces are 4 pieces and are uniformly arranged along the circumferential direction of the sleeve.

As a preferred technical scheme, a base is arranged at the outer end part of the sleeve, and a sealing ring is arranged in the base in a matched mode.

Due to the adoption of the technical scheme, the utility model has at least the following beneficial effects: the dilator is used in cooperation with the puncture outfit after directly puncturing the abdominal wall, when the puncture outfit stretches into the dilator, the dilation piece is opened and then stretched outwards to achieve the dilation effect, and the human body does not need to be filled with CO₂A gas. The operation instrument still operates the operation through the puncture outfit, and the method has the advantages of the traditional suspension laparoscope and reduces the wound caused by the puncture and the lifting of the metal wire on the abdominal wall.

Drawings

The drawings are only for purposes of illustrating and explaining the present invention and are not to be construed as limiting the scope of the present invention. Wherein:

FIG. 1 is a schematic perspective view of an embodiment of the present invention;

FIG. 2 is a schematic top view of an embodiment of the present invention;

FIG. 3 is a schematic view of the structure of the sleeve portion in the embodiment of the present invention;

FIG. 4 is a schematic view of the structure of the extender piece portion in an embodiment of the present invention;

FIG. 5 is a schematic view showing the puncture instrument after the respective expansion pieces are opened after the puncture instrument is inserted.

Detailed Description

The utility model is further illustrated below with reference to the figures and examples. In the following detailed description, certain exemplary embodiments of the present invention are described by way of illustration only. Needless to say, a person skilled in the art realizes that the described embodiments can be modified in various different ways without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are illustrative in nature and not intended to limit the scope of the claims.

Examples

As shown in fig. 1 to 5, the puncture dilator includes a cannula 10 and a plurality of dilating segments 20 capable of puncturing the abdominal wall, in this embodiment, 4 dilating segments 20 are taken as an example, and 4 dilating segments are uniformly arranged along the circumferential direction of the cannula 10, however, 3 or 5 dilating segments 20 may also be used, which shall fall within the protection scope of the present invention. Wherein, the cannula 10 provides a passage for the puncture outfit to enter and exit; the expansion piece 20 is rotatably mounted to the inner end of the sleeve 10; referring to fig. 1, when the puncture outfit is not entered, the head ends of the expansion pieces 20 are gathered, and the plurality of expansion pieces are gathered to form a cone shape, so that the puncture outfit can directly puncture the abdominal wall; referring to fig. 5, the puncture outfit forces the head ends of the expansion pieces 20 to open after entering, and the expansion pieces are petal-shaped after opening and can prop against the abdominal wall.

Referring to fig. 4, the expansion tab 20 widens from a tip, which facilitates penetration through the abdominal wall, to a tail, which widens against the abdominal wall. A claw 21 is integrally formed at the tail end of the expansion piece 20, referring to fig. 3, a rotating shaft 11 matched with the claw 21 is arranged at the inner end of the sleeve 10, and the claw 21 can be clamped into the rotating shaft 11 and can rotate around the rotating shaft 11. A limiting blocking piece 22 is fixedly arranged between the tail ends of the expansion pieces 20, when the puncture outfit extends into the sleeve 10, the limiting blocking piece 22 is pushed open by the puncture outfit and then is propped against, so that the expansion pieces 20 are rotated to be opened, and the supporting surfaces 23 on the expansion pieces 20 support the abdominal wall; on the other hand, the limiting stop pieces 22 also have the function of ensuring that the tips of the expansion pieces 20 are kept fixed and positioned when the dilator pierces the abdominal wall.

In addition, in order to ensure that the tip of each expansion piece 20 is fixed and kept in a gathered state when the dilator pierces the abdominal wall, a silicon rubber clamping ring 30 is clamped between the middle parts of the expansion pieces 20. The outer side wall of the sleeve 10 is provided with a fixing groove 12 for the clamping ring 30 to be clamped in, when the puncture outfit extends in and the 4 expansion pieces 20 are opened, the clamping ring 30 can move upwards until moving into the fixing groove 12, and the clamping ring 30 is prevented from falling off in a human body when the dilator is taken out after an operation.

The outer end part of the sleeve 10 is provided with a base 40, and a silicon rubber sealing ring 41 is arranged in the base 40 in a matching way, so that the sealing function is provided after the puncture outfit enters.

The dilator is used in cooperation with the puncture outfit after directly puncturing the abdominal wall, when the puncture outfit stretches into the dilator, the limiting blocking sheet 22 is pushed open, the 4 expansion sheets 20 are opened and stretched outwards to play a role in expansion, and the dilator does not need to be filled with CO in the human body₂A gas.

In the operation process, the dilator is firstly penetrated into the abdominal cavity, then the puncture outfit is penetrated into the dilator, so that 4 dilator sheets of the dilator are opened, the abdominal wall is lifted up through the external suspension accessory apparatus, thereby expanding the operation space, meanwhile, the operation apparatus still operates the operation through the puncture outfit.

The above description is only an exemplary embodiment of the present invention, and is not intended to limit the scope of the present invention. Any equivalent changes and modifications that can be made by one skilled in the art without departing from the spirit and principles of the utility model shall fall within the protection scope of the utility model.

Claims

1. A puncture dilator, comprising:

the sleeve provides a passage for the puncture outfit to enter and exit;

2. The puncture dilator of claim 1, wherein: the expansion piece gradually widens from the head end to the tail end.

3. The puncture dilator of claim 1, wherein: and the clamping ring is used for keeping the head ends of the expansion pieces gathered.

4. The puncture dilator of claim 3, wherein: and a fixing groove for the clamping ring to be clamped is formed in the outer side wall of the sleeve.

5. The puncture dilator of claim 1, wherein: the tail end of the expansion piece is provided with a clamping jaw, the inner end part of the sleeve is provided with a rotating shaft matched with the clamping jaw, and the clamping jaw is clamped into the rotating shaft and can rotate around the rotating shaft.

6. The puncture dilator of claim 5, wherein: and a limiting blocking piece is fixedly arranged between the expansion pieces.

7. The puncture dilator of claim 1, wherein: the expansion pieces are 4 pieces and are uniformly arranged along the circumferential direction of the sleeve.

8. The puncture dilator of any one of claims 1 to 7, wherein: the outer end of the sleeve is provided with a base, and a sealing ring is arranged in the base in a matched mode.