TWI452995B - Tran-urethral resectoscope tool for resection of urinary bladder tumors - Google Patents

Description

Transurethral endoscopy bladder tumor resection tool

The present invention relates to a transurethral endoscopic bladder tumor resection tool; and more particularly to a bladder tumor resection tool having an auxiliary safety device disposed on a cutting loop.

For example, Figure 1 discloses an exploded side view of a conventional tran-urethral resectoscope mechanism. Referring to Figure 1, the conventional endoscopic tumor resection mechanism 1 is a long tubular tool that passes through the urethra of the human body and then enters the interior of the bladder. The endoscopic tumor resection mechanism 1 has an endoscope seat 10 and a reciprocation mechanism 11.

Referring again to FIG. 1, the endoscope base 10 has a cystoscope window 101, and the cystoscope window 101 is used to examine the inside of the bladder. In addition, a tool assembly channel 102 is longitudinally extended on one side of the endoscope base 10, and the tool assembly channel 102 is for receiving an electric cutting tool 20, as shown in the lower position of FIG. The electric cutting tool 20 is used to perform electric scraping to scrape a tumor located on the inner surface of the bladder.

Figure 2 is a side elevational view of a combination of conventional transurethral endoscopic bladder tumor resection mechanisms. Referring to FIG. 2, the tool assembly channel 102 of the endoscope base 10 is coupled to the electric cutting tool 20 so that the electric cutting tool 20 can move relative to the tool combination channel 102 in a relatively reciprocating operation. In addition, one end of the electric cutting tool 20 is locked to the reciprocating mechanism 11 so that the reciprocating mechanism 11 and the electric cutting tool 20 can synchronously reciprocate.

Referring again to FIG. 1, in addition to combining the cutting tool 20, the tool combination channel 102 of the endoscope base 10 can also be selected as an auxiliary conduit channel. The auxiliary catheter channel is used to directly pass through a ureteral catheter [not shown], so that the ureteral catheter enters the interior of the kidney via the bladder and ureter, and other parts of the ureteral catheter are not described in detail herein.

Referring again to FIGS. 1 and 2, the endoscope base 10 has a guide slider 103 connected to the cystoscope window 101. The reciprocating mechanism 11 is longitudinally reciprocable along the guiding slide 103. As shown in FIG. 2, one end of the electric cutting tool 20 is locked to the reciprocating mechanism 11 so that the reciprocating mechanism 11 and the electric cutting tool 20 can reciprocate synchronously.

Referring again to FIGS. 1 and 2, the reciprocating mechanism 11 has a C-shaped spring piece 111 coupled to the endoscope base 10, and the C-shaped spring piece 111 is used to provide a resilient pressure to the reciprocating mechanism 11. So that the reciprocating mechanism 11 is against the cystoscope window 101. When the C-shaped spring piece 111 is pressed, the reciprocating mechanism 11 can be caused to move.

Fig. 2A is a perspective view showing the electric cutting tool of the conventional transurethral endoscopic bladder tumor resection mechanism located at the position of the electric guide wire. Referring to FIGS. 2 and 2A, the electric cutting tool 20 has a first end and a second end, wherein the first end includes an electric cutting wire 201, and the second end includes an electrode 202. The electric cutting wire 201 is used to electrically cut the bladder tumor, and the electrode 202 is electrically connected to the reciprocating mechanism 11 to supply an appropriate current through the electric cutting wire 201.

Figure 3 is a side elevational view of a reciprocating motion of a transurethral endoscopic bladder tumor resection mechanism. Referring to FIG. 3, when the C-shaped spring piece 111 is pressed, the reciprocating mechanism 11 and the electric cutting tool 20 can be driven to move relatively forward, as indicated by the leftward arrow direction of FIG. 3; In the case of the C-shaped spring piece 111, the reciprocating mechanism 11 and the electric cutting tool 20 can be moved relatively rearward, as indicated by the direction of the right arrow in FIG.

In the above, FIG. 3A is a side view showing the state of use of a bladder tumor resection operation using an electric cutting tool of a transurethral endoscopic bladder tumor resection mechanism. Referring to FIG. 3A, the electric cutting wire 201 of the electric cutting tool 20 can cut a tumor 4 along a surface 3 of the bladder wall. During the tumor resection operation, the electric cutting wire 201 of the electric cutting tool 20 can enter the side of the tumor 4 along the bladder wall surface 3, as indicated by the left arrow direction of FIG. 3A; When the electric cutting wire 201 of the cutting tool 20 is against one side of the tumor 4, the electric cutting wire 201 of the electric cutting tool 20 is energized, and the tumor 4 is electrically burned along the surface 3 of the bladder wall. As shown by the direction of the right arrow in Figure 3A, a muscle layer 31 is left.

Referring to FIG. 3A again, when the electric cutting wire 201 of the electric cutting tool 20 is pressed against and scraped off the tumor 4, the operator must manually operate the electric cutting wire 201 to perform the electric shaving operation. And the tumor should be scraped off step by step. However, the operator manually manipulates the curvature guidewire 201 via the cystoscope window 101 [shown in FIG. 3], which may be due to the operator's inability to accurately control the electrosurgical scraping depth of the curvilinear guidewire 201. Or, due to energization, the bladder wall surface 3 and the muscle layer 31 are subjected to current stimulation contraction, causing the preset scraping depth to change, and causing accidental scraping of the epidermal layer and the muscle layer 31 or the peritoneal layer 34 of the bladder wall surface 3, and entering The internal space of the posterior abdominal cavity 32, or the internal space of the peritoneal cavity 33, thereby increasing the risk of surgery for the patient, for example, cutting the blood vessel of the posterior abdominal cavity 33 to cause internal bleeding or the cells of the tumor 4 diffusing into the interior of the peritoneal cavity 33. .

Therefore, during the endoscopic bladder tumor resection operation, the operator may accidentally scratch the epidermal layer and the muscle layer 31 or the peritoneal layer 34 of the bladder wall surface 3 due to the above-mentioned inadvertent operation. Therefore, it is necessary to further improve the configuration of the conventional electric cutting tool and its electric cutting guide wire in order to improve the aforementioned surgical risk.

The human bladder medical technology is only disclosed in a few domestic patents. For example, the self-cleaning bladder discharge device of the Republic of China Patent No. 422710 and the self-clearing bladder drainage device of No. 333449. The above-mentioned domestic patents are only for reference to the technical background of the present invention and the state of the art is not limited to the scope of the present invention.

The human bladder medical technology is also only disclosed in some US patents. For example, US Patent No. 7,263,999 for the use of the uterus and urinary bladder and ring for preventing prolapse of uterus and rectum, US 5,520,636 for the Application of flushing the urinary bladder, US 5,149,329 for the Surgical suture carrier and method for Urinary bladder neck suspension and US 4,227,532 Device for crushing calculi in the urinary bladder. The above-mentioned U.S. patents are only for the purpose of the technical background of the present invention and are intended to limit the scope of the present invention.

In view of the above, the present invention is to solve the above problems, and provides a transurethral endoscope bladder tumor resection tool, which is disposed on an electric cutting guide wire by using an auxiliary safety guard, and uses the auxiliary safety guard to limit the electric cutting. The depth of the tumor of the guide wire is cut to achieve the purpose of reducing the risk of surgery.

The main object of the present invention is to provide a transurethral endoscope bladder tumor resection tool which is provided on an electric cutting guide wire by an auxiliary safety guard and uses the auxiliary safety guard to limit the tumor scraping of the electric cutting guide wire. Depth to achieve the goal of reducing the risk of surgery for patients.

In order to achieve the above object, a transurethral endoscope bladder tumor resection tool according to a preferred embodiment of the present invention comprises: an electric cutting tool body having a first end and a second end; and an electric cutting guide wire disposed on the a first end of the electric cutting tool body; and an auxiliary safety guard disposed on one side of the electric cutting guide wire, forming a predetermined gap between the electric cutting guide wire and the auxiliary safety guard; wherein the auxiliary The safety guard is used to control the scraping depth of the electric cutting guide wire.

The auxiliary safety guard of the preferred embodiment of the present invention is made of an insulating material and does not have the characteristics of compression deformation.

The shape of the auxiliary safety guard according to the preferred embodiment of the present invention corresponds to the shape of the electric cutting guide wire.

In the preferred embodiment of the invention, the auxiliary safety guard has a joint.

In the preferred embodiment of the present invention, the joint of the auxiliary safety guard is adhered to the first end of the electric cutting tool body.

The predetermined gap of the preferred embodiment of the invention has a horizontal spacing.

The predetermined gap of the preferred embodiment of the invention has a vertical height difference.

In order to fully understand the present invention, the preferred embodiments of the present invention are described in detail below and are not intended to limit the invention.

The transurethral endoscopic bladder tumor resection tool of the preferred embodiment of the present invention can be applied to various technical fields of endoscopic bladder tumor resection, and can be applied to various bladder tumor resection operations, but it is not intended to limit the present invention. The scope of application of bladder tumor resection tools.

Figure 4 is a perspective perspective view of a transurethral endoscopic bladder tumor resection tool in a preferred embodiment of the present invention in a portion of a curvature guide wire; Figure 5 is a view showing a transurethral endoscopic bladder tumor resection in accordance with a preferred embodiment of the present invention. The tool is located in the side view of the electric guide wire; FIG. 5A is a side view showing the use state of the transurethral endoscopic bladder tumor resection tool for performing the bladder tumor resection operation according to the preferred embodiment of the present invention, FIGS. 4 and 5. And Fig. 5A only reveals the portion of the electrosurgical guide wire, the remainder of which is compared to the conventional electric cutting tool of Fig. 1, which is hereby incorporated by reference.

Referring to Figures 4 and 5, the transurethral endoscope bladder tumor resection tool of the preferred embodiment of the present invention is an elongated strip tool, which is an electric cutting tool body 50 having a first end and A second end [not shown]. The cutting tool body 50 has two support rods 51a, 51b, and the support rods 51a, 51b extend forwardly to form a fork shape, but it is not intended to limit the scope of the present invention. The support rods 51a, 51b are covered with an insulating material to avoid leakage.

Referring to FIGS. 4 and 5, the cutting tool body 50 includes an electric cutting guide wire 501 and an auxiliary safety guard 503. The electric cutting wire 501 is disposed at the first end of the electric cutting tool body 50, and the electric cutting wire 501 is bent downward by about 90° with respect to the electric cutting tool body 50, but it is not used to limit the present invention. The scope. The electric cut guide wire 501 of the preferred embodiment of the present invention is made of a conductive material that is bridged between the support rods 51a, 51b and is electrically connected. The electric cutting wire 501 is a thin metal wire having a circular arc shape or other suitable shape, but it is not intended to limit the scope of the present invention.

Referring to Figures 4 and 5 again, the auxiliary safety guard 503 is a curved thin wire having a circular arc shape or other suitable shape, but it is not intended to limit the scope of the present invention. In the preferred embodiment of the present invention, the auxiliary safety guard 503 is disposed on one side of the electric cutting guide wire 501, that is, the auxiliary safety guard 503 is located inside the electric cutting guide wire 501, so as to functionally protect the auxiliary safety guard The piece 503 can be used to control the scraping depth of the electric cutting wire 501. The auxiliary safety guard 503 of the preferred embodiment of the present invention is made of an insulating material and does not have the property of being compressed and deformed. In addition, the shape of the auxiliary safety guard 503 according to the preferred embodiment of the present invention corresponds to the shape of the electric cutting guide wire 501.

Referring to the fourth and fifth embodiments, the auxiliary safety guard 503 of the preferred embodiment of the present invention has a joint portion 504, so that the auxiliary safety guard 503 is coupled to the support rod 51a of the electric cutting tool body 50, 51b; Thus, the auxiliary safety guard 503 corresponds to the electric cutting guide wire 501. In the preferred embodiment of the present invention, the joint portion 504 of the auxiliary safety guard 503 is adhered to the first end of the electric cutting tool body 50.

Referring to FIG. 5 again, in order for the electric cut guide wire 501 to perform a bladder tumor resection operation, an appropriate gap must be reserved between the electric cut guide wire 501 and the auxiliary safety guard 503. The preferred embodiment of the present invention forms a predetermined gap between the electric cutting wire 501 and the auxiliary safety guard 503, that is, the predetermined gap of the electric cutting wire 501 and the auxiliary safety guard 503 has a horizontal spacing, such as the fifth. The horizontal arrow of the figure shows that the predetermined gap of the electric cutting wire 501 and the auxiliary safety guard 503 has a vertical height difference, as indicated by the vertical arrow in FIG.

Referring to FIGS. 5 and 5A, when the electric cutting wire 501 of the electric cutting tool body 50 is against and scraped off the tumor 4, the auxiliary safety guard 503 also abuts against the appropriate portion of the tumor 4; The operator does not need to worry about accidentally scratching the epidermal layer of the bladder wall surface 3 and the muscle layer 31 or the peritoneal layer 34 to operate the electric cutting wire 501, such as the double-dashed arrow in Figure 5A. The tumor 4 is shown to be scraped off by electrocautery, and the remainder is compared to Figure 3A, which is incorporated herein by reference. At this time, the electrosurgical cutting tissue of the tumor 4 can pass through the predetermined gap of the electric cutting wire 501 and the auxiliary safety guard 503, and will not be further described herein.

The foregoing preferred embodiments are merely illustrative of the invention and the technical features thereof, and the techniques of the embodiments can be carried out with various substantial equivalent modifications and/or alternatives; therefore, the scope of the invention is subject to the appended claims. The scope defined by the scope shall prevail.

1. . . Endoscopic tumor resection mechanism

10. . . Endoscope base

101. . . Cystoscope window

102. . . Tool combination channel

103. . . Guide slider

11. . . Reciprocating mechanism

111. . . C type spring piece

20. . . Electric cutting tool

201. . . Electric cutting guide wire

202. . . electrode

3. . . Bladder wall surface

31. . . Muscle layer

32. . . Posterior abdominal cavity

33. . . Peritoneal cavity

34. . . Peritoneal layer

4. . . Tumor

50. . . Electric cutting tool body

501. . . Electric cutting guide wire

503. . . Auxiliary safety guard

504. . . combination

51a. . . Support rod

51b. . . Support rod

Figure 1: An exploded side view of a conventional transurethral endoscopic bladder tumor resection mechanism.

Figure 2: Side view of a combination of conventional transurethral endoscopic bladder tumor resection mechanisms.

Figure 2A: A perspective view of a conventional transurethral endoscopic bladder tumor resection mechanism with an electric cutting tool located at the position of the electric guide wire.

Figure 3: Side view of a reciprocating motion of a transurethral endoscopic bladder tumor resection mechanism.

Fig. 3A is a side view showing the state of use of a bladder tumor resection operation by a conventional transurethral endoscopic bladder tumor resection mechanism.

Figure 4: A perspective view of a transurethral endoscopic bladder tumor resection tool in accordance with a preferred embodiment of the present invention at the site of the electrically guided guidewire.

Figure 5: A side view of a transurethral endoscopic bladder tumor resection tool in accordance with a preferred embodiment of the present invention.

Fig. 5A is a side view showing the state of use of a transurethral endoscopic bladder tumor resection tool for performing a bladder tumor resection operation according to a preferred embodiment of the present invention.

50. . . Electric cutting tool body

501. . . Electric cutting guide wire

503. . . Auxiliary safety guard

504. . . combination

51a. . . Support rod

51b. . . Support rod

Claims (10)

A transurethral endoscope bladder tumor resection tool includes: an electric cutting tool body having a first end and a second end; and an electric cutting guide wire disposed at the first end of the electrosurgical tool body And an auxiliary safety guard disposed on one side of the electric cutting guide wire, forming a predetermined fixed gap between the electric cutting guide wire and the auxiliary safety guard, and the predetermined fixed gap has a predetermined fixed horizontal distance And a predetermined fixed vertical height distance; wherein the auxiliary safety guard is made of an insulating material, and the auxiliary safety guard is used for fixedly controlling the scraping depth of the electric cutting guide wire. A transurethral endoscope bladder tumor resection tool, comprising: an electric cutting tool body having an electric cutting guide wire and an auxiliary safety guard, the electric cutting guide wire being located on one side of the auxiliary safety guard, and A predetermined fixed gap is formed between the electric cutting guide wire and the auxiliary safety guard, wherein the predetermined fixed gap has a predetermined fixed horizontal distance and a predetermined fixed vertical height distance, and the auxiliary safety guard is made of an insulating material. The transurethral endoscopic bladder tumor resection tool according to claim 1 or 2, wherein the auxiliary safety guard is a curved thin wire. The transurethral endoscopic bladder tumor resection tool according to claim 1 or 2, wherein the shape of the auxiliary safety guard corresponds to the shape of the electric guide wire. The transurethral endoscopic bladder tumor resection tool of claim 1 or 2, wherein the auxiliary safety guard has a joint. The transurethral endoscopic bladder tumor resection tool according to claim 5, wherein the joint of the auxiliary safety guard is adhered to the electric cutting tool body. The transurethral endoscopic bladder tumor resection tool of claim 1 or 2, wherein the predetermined gap has a horizontal spacing. The transurethral endoscopic bladder tumor resection tool of claim 1 or 2, wherein the predetermined gap has a vertical height difference. The transurethral endoscopic bladder tumor resection tool according to claim 1 or 2, wherein the auxiliary safety guard has an arc shape. The transurethral endoscopic bladder tumor resection tool according to claim 1 or 2, wherein the auxiliary safety guard has no deformation characteristics.