CN109498121B

CN109498121B - Sealing element for puncture outfit and puncture outfit

Info

Publication number: CN109498121B
Application number: CN201811539851.8A
Authority: CN
Inventors: 朱健; 刘国宁; 高俊
Original assignee: Jiangsu Regrown Medical Technology Co ltd
Current assignee: Jiangsu Regrown Medical Technology Co ltd
Priority date: 2018-12-17
Filing date: 2018-12-17
Publication date: 2020-05-15
Anticipated expiration: 2038-12-17
Also published as: WO2020125028A1; CN109498121A

Abstract

The invention discloses a sealing element for a puncture outfit and the puncture outfit, which comprise a deformation body made of flexible materials, wherein the deformation body is provided with a gas inlet and outlet channel and a through hole, and the circle center of the through hole and the central shaft of a puncture cannula are on the same straight line; when air is fed, the deformation body expands to reduce the through hole; when exhausting, the deformation body contracts and the through hole expands. The deformable body sealing structure of the sealing element is ingenious in design, is suitable for surgical instruments of different sizes, and is reliable in sealing performance and safe in clinical use. In addition, the deformation body is matched with the guide frame for use, so that the deformation body is ensured to expand towards the circle center of the through hole, the deformation body is tightly attached to a surgical instrument, and the sealing property is greatly improved; through the gas access passage, the internal gas of control deformation body can contract the through-hole to sealed, also can expand the through-hole, makes things convenient for the change of surgical instruments.

Description

Sealing element for puncture outfit and puncture outfit

Technical Field

The invention relates to the field of medical instruments, in particular to a sealing element for a puncture outfit and the puncture outfit.

Background

The disposable puncture outfit is an important appliance in laparoscopic surgery, is a matched surgical appliance for extrathoracic and abdominal cavity endoscope, and is suitable for establishing a working channel for thoracic and abdominal cavity surgery in the thoracic and abdominal cavity endoscopy and surgical process. With the development of imaging technology and imaging technology, minimally invasive surgical methods represented by laparoscopic surgery have been rapidly developed in recent years, and particularly, in gynecology, general surgery, and other surgeries involving abdominal cavities, the open surgery is gradually changed into the minimally invasive surgery in cavities. In laparoscopic surgery, what generally adopted is 2 ~ 5 puncture holes, one places the peritoneoscope, and remaining hole is used for placing surgical instruments, and surgical instruments uses the external diameter to divide into approximately 5mm, 10mm, 12mm, 15mm etc. need supporting compatible internal diameter puncture sleeve pipe in the use to avoid pneumoperitoneum gas leakage, influence the operation and go on.

Clinically, a surgery usually needs the surgical instruments of multiple specifications to in-process used in turn in the operation, uses the surgical instruments of multiple specifications on a puncture sleeve pipe, leads to pneumoperitoneum gas leakage, and in the operation simultaneously, the surgical instruments are movable, and the commonly used duckbill seal structure is difficult to obtain good sealed effect, and because the duckbill structure is one-way structure, is difficult to reverse take out the tissue excision when the operation, causes the operation difficulty, causes the misery for patient.

Disclosure of Invention

Aiming at overcoming the defects in the prior art, the invention mainly aims to overcome the defects in the prior art and discloses a sealing element for a puncture outfit, which is characterized by comprising a deformation body made of flexible materials, wherein a gas inlet and outlet channel is arranged on the deformation body, a through hole is arranged on the deformation body, and the circle center of the through hole and the central shaft of a puncture cannula are on the same straight line; when air is fed, the deformation body expands to shrink the through hole; when exhausting, the deformation body contracts and the through hole expands.

Furthermore, the deformation body is arranged in a split mode and is composed of at least two parts.

Further, the deformation body is annular, and the through hole is provided in the center of the deformation body.

Further, the flexible material is rubber or fabric with a sealing layer.

Furthermore, a guide frame used for limiting and guiding the deformation body to expand towards the center of the through hole is arranged on the periphery of the deformation body.

Furthermore, the guide frame comprises a support plate and a guide plate, wherein the guide plate is fixed on the support plate, and the cross section of the guide plate is concave.

Furthermore, a plurality of positioning columns are arranged on the contact surface of the guide plate and the supporting plate, and positioning holes matched with the positioning columns are arranged at the corresponding positions of the supporting plate.

Furthermore, the periphery of the deformable body is provided with a fixing edge, and the deformable body and the guide frame are fixed through the fixing edge.

A puncture outfit comprises the sealing element and an air inlet channel, wherein the air inlet channel and the air outlet channel of the deformable body are respectively communicated with the air inlet channel and the outside through valves.

A puncture outfit comprises the sealing element, an air inlet channel and a smoke exhaust channel, wherein the air inlet channel and the smoke exhaust channel of the deformation body are respectively communicated with the air inlet channel and the smoke exhaust channel of the puncture outfit through valves.

The invention has the following beneficial effects:

the deformable body sealing structure of the sealing element is ingenious in design, is suitable for surgical instruments of different sizes, and is reliable in sealing performance and safe in clinical use. In addition, the deformation body is matched with the guide frame for use, so that the deformation body is ensured to expand towards the circle center of the through hole, the deformation body is tightly attached to a surgical instrument, and the sealing property is greatly improved; through gaseous access passage, the internal portion gas of control deformation can contract the through-hole to sealed, also can expand the through-hole, makes things convenient for the change of surgical instruments and takes out the operation residue.

Drawings

FIG. 1 is a schematic view of a seal for a puncture instrument according to the present invention;

FIG. 2 is a schematic view of the installation of the seal;

FIG. 3 is a schematic view of the installation of the guide frame;

FIG. 4 is a top view of the guide frame;

FIG. 5 is a cross-sectional view taken along line B-B of FIG. 4;

FIG. 6 is a schematic view of a puncture instrument;

FIG. 7 is a schematic structural diagram of a deformable body connecting valve;

FIG. 8 is a schematic diagram of a variant connection according to an embodiment;

FIG. 9 is a schematic view showing a connection of another embodiment of a transformation;

FIG. 10 is a schematic structural view of another variant;

the reference numbers are as follows:

1. the gas inlet and outlet channel comprises a gas inlet and outlet channel 3, a through hole 4, a puncture sleeve 5, a guide frame 6, a fixing transformer 7, an air inlet channel 8, a smoke exhaust channel 11, an air inlet valve 12, an exhaust valve 51, a guide plate 52, a support plate 61, a fixing hole 511, a positioning column 521 and a positioning hole.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The sealing element for the puncture outfit comprises a deforming body made of flexible materials, wherein a gas inlet and outlet channel 1 is arranged on the deforming body, comprises a gas inlet and a gas outlet, and is expanded or contracted by inflating or exhausting the deforming body; the air inlet and the air outlet can be opened and closed through the valve, and then the air inlet and the air outlet are realized. Of course, it can be easily understood that only one air hole can be arranged on the deformation body, the air hole is compatible with the air intake and exhaust functions, the air hole is externally connected with two valves (an air intake valve 11 and an exhaust valve 12), as shown in fig. 7, the air inlet and outlet channel 1 is respectively connected with the air intake valve 11 and the exhaust valve 12, and the air intake and exhaust functions are realized through valve control.

The deformable body is provided with a through hole 3, and surgical instruments enter the abdominal cavity through the through hole 3. The circle center of the through hole 3 and the central shaft of the puncture cannula 4 are on the same straight line; when the air inlet is opened, the air enters the deformable body, the deformable body expands to reduce the through hole and wrap the surgical instrument, so that the sealing function is realized; if no surgical instrument is placed in the through hole 3, the interior of the deformation body is inflated and expanded, and the through hole 3 is contracted until being closed. When the air inlet is closed, the air outlet is opened, and the air in the deformable body is exhausted, the deformable body contracts, and the through hole 3 expands, so that the surgical instrument can be conveniently taken out; in addition, the air in the deformable body is pumped through the exhaust port, and the deformable body is made of flexible materials, so that the through hole 3 is expanded towards the periphery of the deformable body, the diameter of the through hole 3 is opened to the maximum, and the placement and the taking out of surgical instruments are not influenced. The section of the deformation body is a symmetrical cone-shaped structure. Facilitating the shrinkage of the through-hole 3.

In one embodiment, the deformable body is provided in a split manner and is composed of at least two parts. The deformation body is formed by splicing the two parts; this can improve the sealing property of the through-hole 3. When the deformation body is infinitely divided into a plurality of parts around the center of the through hole 3, it can be thought that when each part is inflated, each part expands towards the circle center, and a better sealing effect can be achieved. As shown in fig. 10, the deformable body 31 has a cone-shaped cross section, and because the deformable body is composed of two parts, and the joint thereof corresponds to a through hole 311 for passing a surgical instrument, the sealing effect can be satisfied without additionally providing the through hole 311.

In an embodiment, the deformation body is ring-shaped, and the through hole 3 is provided in the center of the deformation body. Like this, the deformation body is concentric circles with through-hole 3, guarantees that the deformation body atress is even when aerifing, avoids taking place partial position overexpansion, makes the deformation body inflation malformation, influences the leakproofness of through-hole 3.

In one embodiment, the flexible material may be one of rubber, plastic, thermoplastic elastomer, and fabric with a sealing layer, wherein the rubber is a high elastic polymer compound, has elasticity, and has good sealing performance, and can be closely attached to the surgical instrument when inflated. Of course, the flexible material may also be a fabric with a sealing layer.

In one embodiment, as shown in fig. 3 to 5, in order to prevent the deformation body from expanding in two directions, i.e., up and down, during inflation, the waste of gas is caused, and the deformation efficiency of the deformation body is low, the pressing force is dispersed, and the sealing effect of the through hole 3 is greatly reduced. Therefore, a guide frame 5 for restricting and guiding the deformation body to expand toward the center of the through hole 3 is provided around the deformation body. The guide frame 5 includes a guide plate 51 and a support plate 52, the guide plate 51 is mounted on the support plate 52, and has a concave cross section, the deformable body is disposed between the guide plate 51 and the support plate 52, i.e., disposed in a concave groove, and the deformable body is restrained from expanding upward and downward, so as to be expanded and deformed toward the center of the through hole 3. In a specific embodiment, a plurality of positioning posts 511 are disposed on the contact surface of the guide plate 51 and the support plate 52, and positioning holes 521 matched with the positioning posts 511 are disposed at corresponding positions of the support plate 52, so that the guide plate 51 and the support plate 52 can be firmly connected together, the positioning holes 521 are in interference fit with the positioning posts 511; in addition, in order to facilitate the installation of the guide frame 5 in the puncture instrument, the positioning column 511 is protruded from the positioning hole 521, and the protruded portion is fixed to the puncture instrument, so that the installation of more installation members can be avoided.

On the basis of the above embodiment, the periphery of the deformable body is provided with the fixing edge 6, and the deformable body is fixed with the guide frame 5 through the fixing edge 6, so that the deformable body is prevented from displacing and affecting the sealing effect of the through hole 3. Preferably, the positioning edge 6 can be provided with a fixing hole 61 corresponding to the positioning column 511.

In order to improve the sealing effect of the sealing element, a plurality of deformation bodies can be arranged in a superposed manner. The two variants are usually arranged in parallel.

The invention also discloses a puncture outfit, which comprises the sealing element in the embodiment and an air inlet channel 7, wherein air is inflated to the abdominal cavity through the air inlet channel 7 to form pneumoperitoneum, as shown in fig. 6 and 8; the sealing element is arranged in the puncture outfit, and the air inlet of the deforming body is controlled to be communicated or disconnected with the air inlet channel 7 through the valve. The air outlet is directly discharged through a valve. When the valve of the air outlet is closed, the valve of the air inlet is opened, and the deformable body is inflated by the gas in the air inlet channel 7, so that the deformable body expands and deforms. When the valve of the air outlet is opened and the valve of the air inlet is closed, the gas in the deformation body is directly discharged into the operating room, and the through hole 3 is expanded. The deformation body is controlled by the gas filled in the pneumoperitoneum, and an external gas source is not needed, so that the structure is simple, and the cost is reduced.

The invention also discloses another puncture outfit, which comprises the sealing element of the embodiment, an air inlet channel 7 and a smoke exhaust channel 8, wherein air is inflated into the abdominal cavity through the air inlet channel 7 to form pneumoperitoneum, and then smoke and water vapor generated in the operation process are exhausted out of the abdominal cavity through the smoke exhaust channel 8, as shown in fig. 2 and 9. The sealing element is arranged in the puncture outfit, and the air inlet of the valve control deformation body is communicated or disconnected with the air inlet channel 7, and the air outlet of the valve control deformation body is communicated or disconnected with the smoke exhaust channel 8. When the valve of the air outlet is closed, the valve of the air inlet is opened, and the deformable body is inflated by the gas in the air inlet channel 7, so that the deformable body expands and deforms. When the valve of the air outlet is opened, the valve of the air inlet is closed, the deformation body exhausts air, and the through hole 3 expands. Through smoke exhaust passage's negative pressure, the internal gas of discharge deformation that can be very fast, through-hole 3 is to the peripheral expansion of deformation, opens the diameter of through-hole 3 to the biggest, can not influence placing and taking out of surgical instruments. The deformation body is controlled by means of the cooperation of the air inlet channel 7 and the smoke exhaust channel 8 with the valve, and the deformation body can be controlled without external equipment, so that the structure is simple, and the cost is reduced.

The above are merely preferred embodiments of the present invention, and are not intended to limit the scope of the invention; it is intended that the following claims be interpreted as including all such alterations, modifications, and equivalents as fall within the true spirit and scope of the invention.

Claims

1. A sealing element for a puncture outfit is characterized by comprising a deformation body made of flexible materials, wherein a gas inlet and outlet channel is arranged on the deformation body, and the gas inlet and outlet channel comprises a gas inlet and a gas outlet; the deformable body is provided with a through hole, the circle center of the through hole is in the same straight line with the central shaft of the puncture cannula, and the through hole is used for placing surgical instruments different from the puncture outfit; when air is supplied, the deformation body expands to reduce the through hole, when the surgical instrument is placed in the through hole, the through hole is reduced to wrap the surgical instrument to realize a sealing function, and when the surgical instrument is not placed in the through hole, the through hole is contracted until the through hole is closed; when exhausting, the deformation body contracts, and the through hole expands, so that the surgical instrument is convenient to take out; the deformable body is arranged in a split manner and consists of at least two parts; the periphery of the deformable body is provided with a guide frame for limiting and guiding the deformable body to expand towards the center of the through hole; the sealing element is arranged in the puncture outfit, the air inlet of the air inlet and outlet channel is communicated with the air inlet channel of the puncture outfit through an air inlet valve, and the air outlet of the air inlet and outlet channel is directly discharged through the valve.

2. The seal for a puncture instrument according to claim 1, wherein the deformation body has an annular shape, and the through hole is provided in a center of the deformation body.

3. A seal for a puncture instrument according to claim 1, wherein the flexible material is one of rubber, plastic, thermoplastic elastomer, and fabric with a sealing layer.

4. The seal of claim 1, wherein said guide frame comprises a support plate and a guide plate, said guide plate being fixed to said support plate and having a cross-section in the shape of a "concave".

5. The sealing member for puncture instrument according to claim 4, wherein the contact surface of the guide plate and the support plate is provided with a plurality of positioning posts, and positioning holes matched with the positioning posts are provided at corresponding positions of the support plate.

6. The sealing member for a puncture instrument according to claim 1, wherein a fixing edge is provided on a periphery of the deformable body, and the deformable body is fixed to the guide frame by the fixing edge.

7. A puncture device, comprising the sealing member for a puncture device according to any one of claims 1 to 6, and further comprising a gas inlet passage, wherein the gas inlet and outlet passages of the deformable body are respectively communicated with the gas inlet passage of the puncture device and the outside through valves.

8. A puncture device comprising the sealing member for a puncture device according to any one of claims 1 to 6, further comprising an air inlet passage and a smoke exhaust passage, wherein the air inlet and outlet passages of the deformable body are respectively communicated with the air inlet passage and smoke exhaust passage of the puncture device through valves.