CN106618722A - Transurethral laparoscope cannula use for disposable engagement - Google Patents

Abstract

The invention provides a disposable transurethral laparoscopic casing for anastomosis. The sleeve includes: a sleeve body, including a tube body, an inner end and an outer end, wherein the tube body has a lumen used as an operation channel, and the opening of the inner end has a sawtooth structure; and an obturator, including a rod body , a front end and a tail, wherein the rod body is cylindrical, the front end has a closing head, and the tail is a cylindrical manipulation unit, and the obturator is used to close the inner cavity of the casing. The insertion of the cannula through the urethra will not damage the urethra; it can also be inserted into laparoscopic instruments; the sawtooth structure at the inner end of the cannula can support the internal opening of the urethra for easy suturing; the use of the cannula can reduce the risk of bladder urethral anastomosis or The operation difficulty of in situ neocystourethral anastomosis makes the suture more convenient and accurate, and helps patients recover urinary continence after operation. In addition, the sawtooth structure can also have an inward shape, which can reduce damage to surrounding tissues when the cannula is inserted through the urethra.

Description

Disposable transurethral laparoscopic sleeve for anastomosis

technical field

The invention belongs to the field of medical equipment, and relates to a disposable transurethral laparoscopic sleeve for anastomosis.

Background technique

At present, urological surgery can be performed by minimally invasive laparoscopic anastomosis. However, in radical prostatectomy or radical cystectomy, when performing laparoscopic vesicourethral anastomosis or in situ neovesicourethral anastomosis, in order to expose the broken end of the urethra to facilitate anastomosis, the common method is to use a common catheter In and out of the urethral stump, but at this time the urethra retracts or collapses due to lack of continuous support, making suturing more difficult. In addition, due to the thin urethra and the limited field of view of the laparoscope, it is difficult to control the reasonable spacing of the suture needles. In addition, the tension at the two ends of the anastomosis is often high, which makes the operation difficult and easily leads to poor suture effect, which makes the postoperative Complications such as leakage of urine. Therefore, we need to design a transurethral laparoscopic sleeve that can well support the urethral stump and guide the suturing process and the laparoscopic instruments.

In addition, if only the ordinary laparoscopic sleeve is extended and modified, and the obturator is converted into a smooth end of the transurethral obturator, but when the obturator passes through the laparoscopic sleeve, due to the thickness of the sleeve wall, As a result, there is a level difference between the end of the obturator and the opening at the end of the cannula, and the edge produced by this level difference often causes damage to the passing urethral tissue when the laparoscopic cannula enters the urethra for anastomosis.

Contents of the invention

The invention provides a disposable anastomotic transurethral laparoscopic sleeve. The cannula is used for anastomosis such as vesicourethra anastomosis or in situ neovesicourethra anastomosis, the operation is convenient, and tissue damage can be avoided or reduced.

The disposable anastomotic transurethral laparoscopic sleeve includes:

A sleeve body, wherein the sleeve body includes a tube body, an inner end and an outer end, wherein the tube body is a hollow cylinder with a lumen used as an operation channel, and the opening of the inner end has a sawtooth structure; and

The obturator includes a rod body, a front end and a tail part, wherein the rod body is cylindrical, the front end has a closing head, and the tail part is a cylindrical manipulation unit, and the obturator is used to close the inner cavity of the casing.

Preferably, the sawtooth structure at the inner end of the sleeve includes a plurality of sawtooths evenly distributed in the circumferential direction of the opening.

Further, the sawtooth structure at the inner end of the sleeve can have an inward shape.

The sawtooth structure is set to support the internal opening of the urethra during anastomosis, and the depressions corresponding to the multiple sawtooths can be set to correspond to the insertion points of suture needles to determine the distance between suture needles.

Preferably, the end of the closing head at the front end of the obturator is spherical.

Further, the sealing head is made of flexible material.

Additionally, the outer end of the cannula can be used to place laparoscopic instruments and operate through the lumen of said cannula.

When performing anastomosis, the head of the obturator carried by the cannula is spherical, so it can be inserted through the urethra without damaging the urethra; after the cannula is successfully inserted through the urethra, pull out the obturator and the The tube is inserted into the laparoscopic operation instrument, which can assist in pulling and other operations during laparoscopic surgery; the inner end of the cannula is serrated (serrated inward, avoiding damage to the urethra during insertion), and can be used during vesicourethral anastomosis or original When performing neovesicourethral anastomosis, it can support the internal opening of the urethra, and the needle does not need to go in and out of the urethra back and forth when suturing the needle. The operation difficulty of in situ neocystourethral anastomosis makes the suture more convenient and accurate, and may help patients recover urinary continence postoperatively.

Description of drawings

Fig. 1 is a schematic structural view of a sleeve body of a disposable transurethral laparoscopic sleeve for anastomosis according to a specific embodiment of the present invention.

Fig. 2 is an enlarged left view schematic diagram of the sawtooth structure at the inner end of the casing shown in Fig. 1 .

Fig. 3 is a schematic structural view of an obturator of a disposable transurethral laparoscopic sleeve for anastomosis according to a specific embodiment of the present invention.

detailed description

In order to make the technical solutions, innovative features, objectives and effects of the present invention easy to understand, the present invention will be further elaborated and described below in conjunction with specific illustrations and through the following specific embodiments.

Fig. 1 and Fig. 2 are schematic structural diagrams of a sleeve body of a disposable transurethral laparoscopic sleeve for anastomosis according to a specific embodiment of the present invention. As shown in Figure 1, the sleeve body 1 included in the disposable anastomotic transurethral laparoscopic sleeve includes a tube body 11, an inner end 12 and an outer end 13, wherein the tube body 11 is a hollow cylinder with a channel for operation. the inner cavity of the sleeve body 1; the outer end 13 of the sleeve body 1 can be used to insert laparoscopic instruments and perform surgical operations through the inner cavity of the sleeve body 11; the inner end opening of the sleeve body 1 has a sawtooth structure 14, and the sawtooth structure 14 has a retracted shape. As shown in FIG. 2 , the serration structure 14 includes a plurality of serrations that are evenly distributed in the circumferential direction of the opening.

Fig. 3 is a schematic structural view of the obturator 2 of the disposable transurethral laparoscopic sleeve for anastomosis according to a specific embodiment of the present invention. As shown in FIG. 3 , the obturator includes a rod body 21 , a front end 22 and a tail 23 . Wherein the front end of the obturator 2 has a closing head, the end of the closing head is smooth spherical; the rod body 21 is cylindrical; the tail 23 is a cylindrical operating unit, which can be used to manipulate the obturator to close the inner cavity of the sleeve body 1.

In some preferred embodiments, the length of the pipe body 11 is 180 mm; the circumference is 21F. There are 6 sawtooths in the sawtooth structure of the inner end opening of the sleeve body 1 . The total length of the rod body 21 and the closing head in the obturator is 185mm. The sealing head material is made of flexible material, and the flexible material can be silica gel or rubber.

The operation of the disposable anastomotic transurethral laparoscopic sleeve includes: before the operation starts, the operator holds the tube body 11 of the laparoscopic sleeve body 1 with one hand, and the manipulation unit at the tail of the obturator 2 with the other hand, and the obturator The sealing head of the device 2 is inserted forward from the outer end 13 of the casing body 1, and passes through the inner cavity of the casing body 11 until the sealing head fits with the sawtooth structure of the inner end 12 of the casing body, and at the same time the smooth end of the sealing head protrudes The inner end 12 of the cannula; because the sawtooth structure of the inner end 12 of the cannula has an inward shape, the diameter of the joint between the closing head and the inner end of the cannula 12 is smaller than the diameter of the exposed closing head, so that the cannula equipped with an obturator enters the urethra reduce damage to surrounding tissues.

During operation, the operator holds the manipulation unit at the tail of the obturator 2, and implants the cannula body 1 equipped with the obturator 2 into the urethra of the patient; The tube body 11 stays in the urethra, and the sawtooth structure of the inner end opening of the sleeve tube supports the urethra; when anastomosis is performed, a laparoscopic operating instrument is inserted from the outer end 13 of the tube body 1, and passes through the tube body 11. The inner cavity reaches the operation site; when suturing, keep the original position of the sleeve body 1 still, use the sawtooth structure at the inner end 12 of the sleeve to support the urethra, and the suture needle insertion point is located in the depression corresponding to the sawtooth of the sawtooth structure. Spacer stitching.

After the operation is completed, move the closing head of the obturator 2 forward again, insert it from the outer end 13 of the casing body 1, pass through the inner cavity of the casing body 11, until the sealing head fits with the sawtooth structure at the inner end 12 of the casing body, and at the same time The smooth end of the closure head protrudes beyond the inner end 12 of the sleeve. Pull out the laparoscopic sleeve body 1 along the urethra.

The disposable transurethral laparoscopic cannula for anastomosis provided by the present invention can support the internal opening of the urethra when performing vesicourethral anastomosis or in situ neovesicourethral anastomosis due to the use of the sawtooth structure at the inner end of the laparoscopic cannula , At the same time, use the depression corresponding to the sawtooth as the needle entry point, which ensures the distance between the suture needles and does not need to go in and out, which greatly reduces the difficulty of operation and postoperative complications. At the same time, due to the retracted shape of the inner end of the sleeve, the sleeve damages surrounding tissues when entering and leaving the urethra, thereby reducing the pain of the patient.

In the above, specific shapes, materials or process sequences of corresponding products and methods are described for the technology of the present invention, and some specific parameters are provided for the purpose of illustration for some specific embodiments. However, it should be understood that these specific descriptions do not limit the technical solutions of the present invention; that is to say, changes and modifications related to shapes, materials, process sequences or parameters are still included in the spirit and scope of the present invention.

Claims (7)

1. a kind of disposable coincideing uses type per urethra laparoscopic cannula, and it includes：

Union body (1), wherein described sleeve pipe body (1) include body (11), inner (12) and outer end (13), wherein the body (11) it is hollow cylinder, with the inner chamber as operating walk way, the inner opening has broached-tooth design (14)；And

Obturator (2), including the body of rod (21), front end (22) and afterbody (23), wherein the body of rod (21) is cylinder, it is described before With closed head, the afterbody (23) is cylindrical actuation unit at end (22), and the obturator (2) is for closing described sleeve pipe body (1) inner chamber.

2. the broached-tooth design (14) of sleeve pipe according to claim 1, wherein described sleeve pipe the inner (12) is included in opening week To the multiple sawtooth being evenly distributed.

3. the broached-tooth design (14) of sleeve pipe according to claim 2, wherein described sleeve pipe the inner (12) is with interior receipts shape.

4. sleeve pipe according to claim 1, wherein the broached-tooth design (14) is set to be propped up when anastomosis is carried out Support orificium urethrae internum, while recess corresponding with the plurality of sawtooth may be configured as corresponding to entry point during suture needle to determine seam Close pin spacing.

5. sleeve pipe according to claim 1, wherein the termination of the closed head is spherical.

6. sleeve pipe according to claim 1, wherein the closed head is made up of flexible material.

7. sleeve pipe according to claim 1, the wherein outer end (13) of described sleeve pipe body (1) can be used for inserting laparoscopic procedure Apparatus, and the inner chamber through the body (11) operated.