CN110547860B - Single-port laparoscope puncture outfit - Google Patents

Abstract

The invention provides a single-port laparoscope puncture outfit, which comprises: the channel comprises a flexible film channel, an upper ring piece and a lower ring piece which are combined at the upper end and the lower end of the flexible film channel; the fixing seat is provided with a circumferential wall, a stop piece formed on the upper side of the circumferential wall and an annular table formed at the upper end of the stop piece; an axially extending operating gap is formed between the annular table and the stop piece; the peripheral surface of the peripheral wall below the stop piece is positioned in the sealing fit channel, and the stop piece stops the upper clamping ring; the upper end of the clamping ring forms a connecting part, the lower end of the clamping ring forms the inner wall of the circumferential wall in a positioning fit manner, and the connecting part is used for being connected with the soft cover bag in a sealing manner; the lower end of the soft cover bag is in sealing joint with the connecting part, and a boss for connecting the sleeve is formed on the soft cover bag.

Description

A single-port laparoscopic trocar

technical field

The invention belongs to medical surgical supplies, in particular to a single-hole multi-channel trocar for laparoscopic surgery, which is suitable for the introduction and operation of minimally invasive laparoscopic surgical instruments through a single hole.

Background technique

In recent years, minimally invasive laparoscopic surgery has developed rapidly, and the previous multi-instrument introduction has been improved from 3-4-hole thocar introduction to one-hole multi-instrument introduction. This procedure makes a small incision from the patient's umbilicus, and puts in a single-hole multi-channel trocar, which can introduce various instruments, which not only reduces the trauma of the patient, but also produces the effect of no scarring in the incision, which is very popular among doctors and patients. The main structure of the single-hole multi-channel trocar is composed of a multi-channel platform and a channel. The main function of the multi-channel is to provide a stage for the operation of the surgical machine, and the channel to enter and exit the human body, and the function of the channel is to open the wound on the abdominal wall to provide support for the implementation of the operation. At present, foreign countries have successively reported single-hole multi-channel trocars such as Tri-port, quad-port, SiLS port, and Uni-x port. Some of them only have a through-hole type, and a file card must be used to transition the introduction device; some are equipped with a sealed valve. The channel does not need to be inserted into the incision; the positioning of the trocar and the incision is also different, and the length of the clip is not adjustable with the bell mouth inlay positioning (SiLS); there is a cone inserted into the incision (Uni-x), which cannot be positioned by itself and must be sutured . Although the length of the positioning pipe of the Tri-quad-port is adjustable, the adjustment is very inconvenient and the operation is difficult. Most of the above are integrated structures, and the removal of the excision must be removed as a whole, which is not only troublesome to operate, but also has the risk of contamination of the incision by the diseased tissue. The above-mentioned various trocar introduction instruments use the transition of the pull card, a few have a sealing channel, and most of them use a gel sealing valve, which is not reliable. The shortcomings of the single-hole multi-channel trocar are in urgent need of continuous improvement. The single-hole multi-channel trocar (authorized announcement number CN202179581U) developed by Beijing Aerospace Cardi Technology Development Institute has improved the design of the channel on this basis. At the same time, it adopts a split type, and the upper end structure and lower end pipeline are detachable, which is convenient for surgery. Extraction in the process. And the domestic design of single-hole puncture mostly adopts this "sleeve" or "buckle method" to assemble the upper multi-channel platform and the lower channel together, such as (authorized announcement number CN206403837U). Since _CO2 gas needs to be filled into the patient's body during the operation to facilitate the operation, the single-hole trocar is required to have a certain airtightness. Therefore, the installation part of the upper multi-channel platform and the lower channel is usually smaller than the diameter of the upper end of the channel, and D1 is smaller than D2, which often results in the need for multiple people to assist the doctor to pull the multi-channel platform during the operation, and then buckle it on the channel, as shown in Figure 1. . At the same time, in order to better ensure air tightness, manufacturers often make a curved surface that is the same as that of the channel on the mating surface of the multi-channel platform to better increase the contact area. However, due to the difficulty of installation, it is often difficult to assemble these surfaces one by one, resulting in air leakage during the operation and hindering the operation, as shown in Figure 2.

SUMMARY OF THE INVENTION

The present invention provides a single-hole laparoscopic trocar comprising:

a channel, the channel includes a flexible film channel and an upper ring piece and a lower ring piece combined with the upper end and the lower end of the flexible film channel;

a fixing seat, the fixing seat has a circumferential wall, a stopper formed on the upper side of the circumferential wall, and an annular platform formed on the upper end of the stopper; an axially extending platform is formed between the annular platform and the stopper operating gap;

The peripheral wall is located inside the sealing and matching channel of the outer peripheral surface below the stopper, and the stopper stops on the upper snap ring;

a snap ring, the upper end of the snap ring forms a connecting part and the lower end of the snap ring forms the inner wall of the circumferential wall for positioning and fitting, the connecting part is used for sealing connection with the soft cuff;

A soft cuff, the lower end of the soft cuff is in sealing engagement with the connecting part, and a boss for connecting the sleeve is formed on the soft cuff.

Preferably, the bosses are cylindrical-like bosses, and the cylindrical-like bosses are cylinders stacked layer by layer from bottom to top with diameters decreasing in sequence.

Preferably, the wall thickness at the interface between the layers is smaller than the thickness at other parts of the boss.

Preferably, the snap ring has a disc-shaped member and a ring member, and the ring member is provided with a plurality of snap grooves at intervals in the circumferential direction; the inner wall of the circumferential wall is provided with a plurality of snap-fit grooves in the circumferential direction. A matching buckle; a socket groove is formed between the disc-shaped member and the annular platform, and the lower end of the soft cuff is socketed in the socket groove.

Preferably, the card slot is inclined toward the upper side.

Preferably, the snap ring is fixedly matched with the fixing seat through a fastener.

Preferably, a sealing ring is sleeved on the outer peripheral surface of the peripheral wall below the stopper piece.

Preferably, an operating gap is formed between the annular platform and the stopper, and preferably, the operating gap is greater than 5 mm.

Preferably, the sleeve is provided with a needle seat upper cover, a protective sleeve, a sealing valve, a gas choke valve, and a puncture sleeve along the central axis of the sleeve. A groove around the circumference is formed inside the sealing valve, and a groove for positioning is formed on the outer wall of the protective sleeve. The puncture sleeve is provided with a raised step, and the lower end of the upper cover of the needle seat is provided with a step that is limited and matched with the raised step.

Preferably, the annular platform is provided with at least one toggle member facing the outside.

Compared with the prior art, the present invention has the following beneficial effects:

By nesting and matching the snap ring, the fixing seat and the flexible cover, the invention has good air tightness effect, convenient assembly and operation by doctors.

Description of drawings

1 is a schematic structural diagram of a single-hole laparoscopic trocar provided by the prior art;

2 is a schematic structural diagram of a single-hole laparoscopic trocar provided by the prior art;

3 is a schematic structural diagram of a single-hole laparoscopic trocar provided by the present invention;

4 is a schematic diagram of the structure disassembly of the single-hole laparoscopic trocar provided by the present invention;

5 is a schematic diagram of the use state of the single-hole laparoscopic trocar provided by the present invention;

6 is a schematic structural diagram of a soft cuff provided by the present invention and an A-direction structural cross-sectional view;

7 is a schematic structural diagram of a snap ring provided by the present invention;

8 is a schematic structural diagram of a fixing base provided by the present invention;

Fig. 9 is the structural representation of the sleeve provided by the present invention;

10 is a schematic diagram of the nesting structure of the snap ring, the soft cuff and the fixing seat provided by the present invention;

11 and 12 are schematic diagrams illustrating the use of the single-hole laparoscopic trocar provided by the present invention.

Detailed ways

The present invention or the technical solutions of the invention are further described in detail below through specific embodiments and in conjunction with the accompanying drawings;

In the description of the present invention, it should be understood that the orientations or positional relationships indicated by the terms "top", "inside", "outside", "upper" and "lower" are based on the orientations or positional relationships shown in the accompanying drawings. , is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention; in this application , the proximal end should be interpreted as the part close to the operator (physician), and the distal end should be understood as the part away from the physician.

In the description of the present invention, it should be noted that, unless otherwise specified and limited, the terms "installation" and "connection" should be understood in a broad sense, for example, it may be a mechanical connection or an electrical connection, or it may be an internal connection between two components. The connection may be direct connection or indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

As shown in FIG. 3 and FIG. 4 , an embodiment of the present invention provides a single-hole laparoscopic trocar, which includes a channel 1 and a multi-channel platform 2;

The channel 1 includes a flexible film channel 12 and an upper ring member 11 and a lower ring member 13 combined with the upper and lower ends of the flexible film 12 channel; optionally, the upper and lower snap rings are a circular part, and the cross-sectional shape can be circular. , rectangle, trapezoid, oval, waist; flexible channel is a thin film made of soft material. The upper ring member 11 and the lower ring member 13 are welded together with the flexible film by heat sealing or ultrasonic wave;

Multi-channel platforms include:

The fixing seat 21, refer to FIG. 4 and FIG. 7, the fixing seat 21 has a circumferential wall 216, a stopper 211 formed on the upper side of the circumferential wall 216, and an annular platform 212 formed on the upper end of the stopper 211. The peripheral wall 216 is located on the outer peripheral surface 216A below the stopper piece to seal and fit inside the flexible film channel, and the stopper 211 stops the upper snap ring 11; in this way, when the outer peripheral surface 216A enters the channel, the stopper 211 stops. It can avoid the defect that the fixed seat slides down into the channel during the treatment process, so that the fixed seat can be positioned stably; An axially extending operating gap A is formed between the stoppers 211; the operating gap can be used by a user, such as a doctor's fingers, so that the doctor can directly reach into the operating gap A and turn the turning piece, which is convenient for the doctor to apply The multi-channel platform can be pulled out quickly from the channel; the defect of inconvenient disassembly and assembly of the existing trocar is avoided;

The snap ring 22, the upper end of the snap ring forms a connecting portion and the lower end of the snap ring is positioned and matched with the inner wall of the circumferential wall 216; the connecting portion is used for sealing connection with the soft cuff; in this way, the multi-channel platform and the channel can be connected. sealed connection;

The soft cuff 23, the lower end of the soft cuff 23 is in sealing engagement with the connecting part, and a boss 231 for connecting the sleeve 25 is formed on the soft cuff; further, there are 2 A small cylindrical hole (injection valve mounting hole) for mating with the insufflation valve. When mating, the cylindrical end face of the lower end of the air injection valve is inserted into the small cylindrical hole on the cover bag, and the size of the hole is smaller than that of the cylindrical end surface of the air injection valve. air tightness;

Referring to Figure 5, during the operation, the doctor makes an incision in the patient's abdomen and inserts the snap ring into the patient's abdominal wall, and fills the patient's body with CO ₂ gas through the gas injection valve, thus obtaining the operation space; at the same time, the surgical instrument enters the operation through the upper sleeve. ;

In some preferred embodiments of the present invention, as shown in FIG. 6 , the bosses are cylindrical-like bosses, and the cylindrical-like bosses are cylinders that are stacked layer by layer from bottom to top and whose diameters decrease sequentially (D1>D2 >D3); the number of layers can be 1, 2, or 3, which is determined according to the size and height of the boss. At the same time, the wall thickness t1 at the junction of the layers is smaller than the thickness t2 of other parts of the boss. When using a single-hole trocar, it is often necessary to twist the surgical instrument left and right to find a better operating angle, and the instrument will drive the quasi-cylindrical boss on the soft cuff to move together. The wall thickness between the layers is reduced, similar to the function of joints, and the doctor is more flexible when operating; The sleeve that fits the upper end is determined. We will call the single-hole trocar with 3 quasi-cylindrical bosses as the 3-channel single-hole trocar; we will call the single-hole trocar with 4 quasi-cylindrical bosses as the 4-channel single-hole trocar; there will be 5 A single-hole trocar with a cylindrical boss is called a 5-channel single-hole trocar;

The lower end surface of the soft cuff preferably has an annular buckle, the upper end surface of the annular buckle is a plane or a protrusion, and the shape can be a triangular or semicircular or rectangular, trapezoidal, etc., and the lower end surface is a plane or a protrusion, The shape can be triangular-like or semi-circular or rectangular, trapezoidal, etc.;

In this embodiment, as shown in FIG. 7 , the snap ring 22 has a disk-shaped member 221 and a ring-shaped member 222 . A plurality of card slots 2221 are arranged at intervals;

Please refer to FIG. 8 and FIG. 4 , the inner wall of the circumferential wall is circumferentially spaced with a plurality of buckles 213 that are snap-fitted with the card slot; preferably, the card slot is inclined toward the upper side, so that the buckle can be avoided. Release from the card slot;

As shown in FIG. 10 , a socket groove is formed between the disk-shaped member 221 and the annular platform 212 , and the lower end of the soft cuff is socketed in the socket groove.

Referring to FIG. 10, the present invention cooperates by nesting and extruding the snap ring, the fixing seat and the flexible cover; a sleeve groove is formed between the lower end surface of the snap ring and the upper end surface of the fixing ring to press the flexible cover The snap ring and the fixing ring are fixed by the cooperation of the snap ring and the square groove; because the lower end face of the snap ring disc and the upper end face of the fixing ring disc have various cross-section methods, there will be many For example, the lower end face of the clasp ring disc, the upper end face of the fixed ring disc and the cuff slot are all flat, or the cuff slot is flat, and the other two faces are triangles, etc.

It can be understood that the snap ring and the fixing seat provided by the present invention can be fixed and matched in various ways, for example, a bolt is used for fixing, and at this time, the snap ring is still in the shape of a disc at the upper end and a ring at the lower end. 16 pins. At this time, the upper end face of the fixed seat also has 4-16 corresponding pin holes. The two press the flexible cover bag through the cooperation of the bolt and the bolt hole; the position where the lower end surface of the snap ring disc and the upper end surface of the fixing seat are in contact with the cover bag, the cross-sectional shape can be a plane or a protrusion, and the shape can be similar. Triangle or semicircle or rectangle, trapezoid, etc.;

Preferably, a ring of sealing ring 26 is sleeved on the outer peripheral surface of the circumferential wall below the stopper, so as to improve the sealing performance between the circumferential wall and the channel; there is an annular groove under the fixed seat for matching with the sealing ring, The sealing ring is made of elastic material. When installing, the sealing ring is sleeved on the annular groove; in order to ensure better sealing, the outer section of the sealing ring can be rectangular, oval, zigzag or triangular.

Referring to FIG. 11 , an operating gap A is formed between the annular platform and the stopper. Preferably, the operating gap A is greater than 5 mm. Through the operating gap, the snap ring, the fixing seat and the soft cuff can be quickly removed. One-piece pull-out channel, quick and easy to use.

In this embodiment, as shown in FIG. 9 , the sleeve is composed of a needle seat upper cover 251, a protective sleeve 252, a sealing valve 253, a choke valve 254, and a puncture sleeve 255 along the central axis. A groove in the direction of the protective sleeve is formed on the outer wall of the protective sleeve with a protrusion for positioning and matching; a raised step is provided inside the puncture sleeve, and a step that is limited and matched with the raised step is provided at the lower end of the upper cover of the needle seat;

Through the puncture device provided by the present invention, a method of use for quick disassembly and assembly is provided; specifically,

When leaving the factory, the soft cuff, the retaining ring and the fixing seat are nested together to form a multi-channel platform; when the doctor uses it, as shown in Figure 11, only the outer peripheral surface of the fixing seat equipped with the sealing ring of the multi-channel platform needs to be inserted into The upper snap ring of the channel, the stopper stops at the upper end of the upper snap ring for positioning the fixing seat to complete the installation; the sealing ring on the multi-channel platform ensures the tightness of the two;

When disassembling, as shown in Figure 12, since there is an operating gap H between the upper end face of the fixing seat and the upper snap ring, the doctor puts his finger into the operating gap, turns the wrench block, and easily removes the upper snap ring from the fixing seat; , The air tightness effect is good, the doctor is easy to assemble, and the doctor is easy to operate.

In the description of this specification, reference to the description of the terms "some embodiments," "some implementations," "examples," etc. means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in the present invention. in at least one embodiment or example. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, those skilled in the art may combine and combine the different embodiments or examples described in this specification, as well as the features of the different embodiments or examples, without conflicting each other.

Although the embodiments of the present invention have been shown and described above, it should be understood that the above-mentioned embodiments are exemplary and should not be construed as limiting the present invention. Embodiments are subject to variations, modifications, substitutions and variations.

Claims (10)

1. A single port laparoscopic puncture instrument, comprising:

a channel (1) comprising a flexible membrane channel (12) and an upper ring (11) and a lower ring (13) joined at the upper and lower ends of the flexible membrane channel;

the fixing seat (21) is provided with a circumferential wall (216), a stop piece (211) formed on the upper side of the circumferential wall (216) and an annular table (212) formed at the upper end of the stop piece (211), the stop piece can avoid the defect that the fixing seat slides downwards into a channel in the treatment process, so that the fixing seat is stably positioned, an axially extending operation gap (A) is formed between the annular table and the stop piece, and the operation gap can be used for a finger of a user to stretch into;

the peripheral wall is positioned in the inner part of the outer peripheral surface sealing fit channel below a stop piece, and the stop piece stops at the upper ring piece (11);

the upper end of the clamping ring (22) forms a connecting part, the lower end of the clamping ring is matched with the inner wall of the circumferential wall (216) in a positioning mode, and the connecting part is used for being connected with the soft cover bag in a sealing mode;

the lower end of the soft cover bag (23) is in sealing joint with the connecting part, and a boss for connecting the sleeve is formed on the soft cover bag;

through the operation clearance, the clamping ring, the fixing seat and the soft cover bag can be quickly pulled out of the channel integrally.

2. The single port laparoscopic puncture instrument according to claim 1, wherein said boss is a cylinder-like boss, said cylinder-like boss being a cylinder stacked layer upon layer from bottom to top and having a diameter decreasing in order.

3. The single port laparoscopic puncture instrument according to claim 2, wherein the wall thickness at the layer-to-layer interface is less than the thickness elsewhere on the boss.

4. The haplopore laparoscopic puncture instrument according to claim 1, wherein said snap ring has a disc-shaped member (221) and a ring-shaped member (222), said disc-shaped member being disposed around an upper end of said ring-shaped member; the annular part is provided with a plurality of clamping grooves (2221) at intervals in the circumferential direction; a plurality of buckles (213) which are in clamping fit with the clamping grooves are arranged on the inner wall of the circumferential wall at intervals in the circumferential direction; a sleeving groove is formed between the disc-shaped piece and the annular table, and the lower end of the soft cover bag is sleeved in the sleeving groove.

5. The single port laparoscopic puncture instrument according to claim 4, wherein said catching groove is inclined toward an upper side.

6. The haplopore laparoscopic puncture instrument of claim 1, wherein said snap ring is fixedly engaged with said holder by means of a fastener.

7. The single port laparoscopic puncture instrument according to claim 1, wherein said circumferential wall is provided with a ring of sealing ring around its outer circumference below said stop piece.

8. The single port laparoscopic puncture instrument according to claim 1, wherein said operating gap is greater than 5 mm.

9. The single port laparoscopic puncture instrument according to claim 1, wherein the sleeve is provided with a needle holder upper cover, a protection sleeve, a sealing valve, a choke valve and a puncture cannula along a central axis, wherein a groove is formed around a circumferential direction inside the sealing valve, and a protrusion is formed on an outer wall of the protection sleeve in positioning fit therewith; the puncture sleeve is internally provided with a raised step, and the lower end of the upper cover of the needle base is provided with a step which is in limit fit with the raised step.

10. The haplopore laparoscopic puncture instrument according to any one of claims 1 to 9, wherein said annular table is provided with at least one trigger (2121) toward the outside.

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