Patent Description:
Ureteral stricture and obstruction are common causes of hydronephrosis. Many types of diseases, comprising benign and malignant diseases, may cause ureteral stricture. Ureteroscopy is an important way to diagnose and treat ureteral obstruction. According to the structural characteristics of ureteroscopy, it can be classified into flexible ureteroscope, rigid ureteroscope, and semi-rigid ureteroscope and so on. The existing ureteroscope has a single function, and different ureteroscopes need to be replaced for different treatment operations, which brings inconvenience to the operation of medical staff.

Therefore, there is an urgent need to develop a multifunctional endoscopic system for cavity inspection and treatment on ureter, including endoureterotomy, monopolar electric resection, bipolar electric resection, laser resection, catheter placement, and clamping.

Document <CIT> describes a resectoscope apparatus for such treatments as resecting and coagulating tissues within a body cavity according to the preamble of claim <NUM>.

In view of the above problems, the present application is intended to provide a multifunctional endoscopic system for cavity inspection and treatment.

In order to achieve the above objective, the present application adopts the following technical solutions, a multifunctional endoscopic system as defined in claim <NUM>.

Preferably, the internal incision piece comprise an internal incision knife, and is formed with a blade portion at a front end thereof, and a snap-fitting portion at a rear end thereof; and a plurality of cylindrical connecting pieces are spaced apart on an outer side wall of an middle portion of the internal incision piece, and the connecting piece are open at both ends thereof.

Preferably, the internal incision knife is a long handled cold knife; and the internal incision knife has a knife head, and the knife head is straight, semicircular or hook.

Preferably, the internal incision piece comprises an internal incision electrode, and is formed with an electrode portion at a front end of the internal incision piece, and a snap-fitting portion at a rear end of the internal incision piece; and a cylindrical connecting piece is arranged on an outer side wall of an middle portion of the internal incision piece, and the connecting piece is open at both ends thereof.

Preferably, the electrode portion of the internal incision electrode is a needle electrode or a ring electrode.

Preferably, the endoscope adopts a straight rigid tube fiber endoscope with a diameter less than ϕ2 mm; and the endoscope sheath has a diameter less than ϕ2.

The present application adopting the above technical solution, has the following advantages: The present application provides a multifunctional endoscopic system for cavity inspection and treatment, which includes an internal incision working hand piece, and an internal incision piece arranged on the internal incision working hand piece, a endoscope sheath connected to a front end of the internal incision working hand piece, and an endoscope connected to a back end of the internal incision working hand piece. The internal incision piece adopts an internal incision knife or an internal incision electrode, and the corresponding internal incision working hand piece adopts cold knife type internal incision working hand piece or monopolar and bipolar mixed-type internal incision working hand piece. According to the treatment requirements, different instruments can be chosen and combined for treatment, and to perform ureteroscopy to the ureter, and perform multiple treatment operations comprising internal incision, monopolar electric resection, bipolar electric resection, laser resection, etc., which are convenient for medical staff to perform operation treatment. The endoscopic system of the present application has an elongate endoscope sheath, precise orientation, and complete functions, and it is easier for the endoscopic system to enter a narrow segment of the cavity for diagnosis, and different treatment methods can be selected according to treatment requirements.

The present invention will be described in detail below with reference to the appended drawings and embodiments. Apparently, it should be understood that the drawings are only provided to better understand the present application, but not to limit the present application.

As shown in <FIG>, a multifunctional endoscopic system for cavity inspection and treatment is provided in this embodiment, it comprises.

Further, as shown in <FIG>, this embodiment also comprises an endoscope bridge <NUM>, which comprises a main channel <NUM> used to replace the internal incision working hand piece <NUM> and connected with the endoscope <NUM> and the endoscope sheath <NUM>; and a bypass channel <NUM> connected with the main channel <NUM>, the bypass channel <NUM> is provided with an on-off valve <NUM>. The bypass channel <NUM> is opened when performing treatment operations such as laser resection, catheter placement, and clamping.

Further, the internal incision working hand piece <NUM> adopts a cold knife type internal incision working hand piece, comprising a fixed hand piece <NUM>; an operation handle <NUM>, arranged on the fixed hand piece <NUM> and used to push the internal incision piece <NUM> to move forward and back axially along the extension part <NUM> of the endoscope <NUM>, and a V-shape resilient piece <NUM> arranged between the fixed hand piece <NUM> and the operation handle <NUM> for resetting the operation handle <NUM>. A channel <NUM> is formed between the fixed hand piece <NUM> and the operation handle <NUM> for the extension part <NUM> of the endoscope <NUM> to pass through. A mounting slot <NUM> is formed between the fixing hand piece <NUM> and the operation handle <NUM> for fixing the internal incision piece <NUM>.

Further, a limiting block (not shown in the figure) is arranged on a side of the operation handle <NUM> close to the fixed hand piece <NUM> and protruded therefrom. During operation, the incision knife <NUM> is pushed by the operator through the operation handle <NUM> to move and extend to the outside of the endoscope sheath <NUM>, when the limiting block is against a side wall of the fixed hand piece <NUM>, the continuous extension of the internal incision knife <NUM> is stopped, and the operator is informed that the internal incision knife <NUM> has reached a specified length, which is convenient for the operator to operate and improve operating efficiency. Preferably, a groove (not shown in the figure) for receiving the limiting block is arranged on the operation handle <NUM>, and the limiting block is rotatably arranged in the groove.

Further, as shown in <FIG>, the internal incision knife <NUM> is formed with a blade portion <NUM> at a front end thereof, and a snap-fitting portion <NUM> at a rear end thereof; and a plurality of cylindrical connecting pieces <NUM> are spaced apart on an outer side wall of an middle portion of the internal incision piece <NUM>, and the connecting piece <NUM> are open at both ends thereof. The extension part <NUM> of the endoscope <NUM> passes through the plurality of connecting pieces <NUM> in sequence, such that the internal incision knife <NUM> is axially distributed below the extension part <NUM> of the endoscope <NUM>, the rear end of the internal incision knife <NUM> is inserted into the internal incision working hand piece <NUM>, and the internal incision knife <NUM> is arranged to snap-fit fixedly on the internal incision working hand piece <NUM> with the snap-fitting portion <NUM> on the internal incision knife <NUM>. When the internal incision working hand piece <NUM> is used to push the internal incision knife <NUM> to move along the axial direction of the extension part <NUM> of the endoscope <NUM>, the connecting piece <NUM> plays a guiding role.

Further, the internal incision knife <NUM> is a long handled cold knife; and the internal incision knife has a knife head, and the knife head is straight, semicircular or hook.

Further, the endoscope <NUM> adopts a straight rigid tube fiber endoscope with a diameter less than ϕ2 mm; and the endoscope sheath <NUM> has a diameter less than ϕ2.

The usage method of this embodiment is as follows:
Taking the endoscopic system for inspection and treatment in this embodiment to treat middle and upper ureteral stricture through a urethra as an example, a normal saline perfusion is used during the operation.

As shown in <FIG>, compared with Example <NUM>, a multifunctional endoscopic system for cavity inspection and treatment is provided in this embodiment, it comprises.

Further, the monopolar and bipolar mixed type internal incision working hand piece <NUM> comprises a fixed hand piece <NUM>; an operation handle <NUM>, arranged on the fixed hand piece <NUM> and used to push the internal incision electrode <NUM> to move forward and back axially along the extension part <NUM> of the endoscope <NUM>, and a V-shape resilient piece <NUM> arranged between the fixed hand piece <NUM> and the operation handle <NUM> for resetting the operation handle <NUM>. A channel <NUM> is formed between the fixed hand piece <NUM> and the operation handle <NUM> for the extension part <NUM> of the endoscope <NUM> to pass through. A mounting slot <NUM> is formed between the fixing hand piece <NUM> and the operation handle <NUM> for fixing the internal incision electrode <NUM>; and the operation handle <NUM> is provided with an electrode connecting socket for connecting an electrode.

Further, the electrode connection socket <NUM> comprises a monopolar socket and a bipolar socket arranged on the operation handle <NUM>.

Further, the internal incision electrode <NUM> is formed with an electrode portion <NUM> at a front end thereof, and a snap-fitting portion <NUM> at a rear end thereof; and a plurality of cylindrical connecting pieces <NUM> are spaced apart on an outer side wall of an middle portion of the internal incision electrode <NUM>, and the connecting piece <NUM> are open at both ends thereof. The extension part <NUM> of the endoscope <NUM> passes through the plurality of connecting pieces <NUM> in sequence, such that the internal incision electrode <NUM> is axially distributed below the extension part <NUM> of the endoscope <NUM>, the rear end of the internal incision electrode <NUM> is inserted into the monopolar and bipolar mixed type internal incision working hand piece <NUM>, and the internal incision electrode <NUM> is arranged to snap-fit fixedly on the monopolar and bipolar mixed type internal incision working hand piece <NUM> with the snap-fitting portion <NUM> on the internal incision electrode <NUM>. When the mono-polar and bipolar mixed type internal incision working hand piece <NUM> is used to push the internal incision electrode <NUM> to move along the axial direction of the extension part <NUM> of the endoscope <NUM>, the connecting piece <NUM> plays a guiding role.

Further, as shown in <FIG>, the electrode portion <NUM> located at the front end of the internal incision electrode <NUM> adopts a needle electrode or a ring electrode.

Further, this embodiment also comprises an endoscope bridge <NUM>, which comprises a main channel <NUM> used to replace the monopolar and bipolar mixed type internal incision working hand piece <NUM> and connected with the endoscope <NUM> and the endoscope sheath <NUM>; and a bypass channel <NUM> that is connected with the main channel <NUM>, the bypass channel <NUM> is provided with an on-off valve <NUM>. The bypass channel <NUM> is opened when performing treatment operations such as laser resection, catheter placement, and clamping.

The usage method of this embodiment is as follows:
Taking the endoscopic system for inspection and treatment in this embodiment to treat middle and upper ureteral stricture through a urethra as an example, a solution perfusion of the solution having <NUM>% by volume of mannitol or <NUM>% by volume of glucose is used during the surgery operation.

Claim 1:
A multifunctional endoscopic system for cavity inspection and treatment, comprising
an internal incision working hand piece (<NUM>);
an internal incision piece (<NUM>), arranged to snap-fit fixedly on the internal incision working hand piece (<NUM>),
an endoscope (<NUM>), arranged to insert into the internal incision working hand piece (<NUM>) from a rear end of the internal incision working hand piece (<NUM>), wherein a head part (<NUM>) of the endoscope (<NUM>) is snap-fitted on the rear end of the internal incision working hand piece (<NUM>), and an extension part (<NUM>) of the endoscope (<NUM>) passes through an inner cavity of the internal incision working hand piece (<NUM>) and extends from a front end of the internal incision working hand piece (<NUM>);
an endoscope sheath (<NUM>), snap-fitted on the front end of the internal incision working hand piece (<NUM>), wherein the internal incision piece (<NUM>) and the extension part (<NUM>) of the endoscope (<NUM>) are axially sleeved in the endoscope sheath (<NUM>),
wherein the internal incision working hand piece (<NUM>) comprises:
a fixed hand piece (<NUM>);
an operation handle (<NUM>), arranged on the fixed hand piece (<NUM>) and used to push the internal incision piece (<NUM>) to move forward and back axially along the extension part (<NUM>) of the endoscope (<NUM>), and
a V-shape resilient piece (<NUM>) for resetting the operation handle (<NUM>); wherein,
a channel (<NUM>) is formed between the fixed hand piece (<NUM>) and the operation handle (<NUM>) for the extension part (<NUM>) of the endoscope (<NUM>) to pass through,
characterized in that a mounting slot (<NUM>) is formed between the fixing hand piece (<NUM>) and the operation handle (<NUM>) for fixing the internal incision piece (<NUM>), and
a limiting block is arranged on a side of the operation handle (<NUM>) close to the fixed hand piece (<NUM>) and protruded therefrom, so as to be against a side wall of the fixed hand piece (<NUM>) during operation, and a groove for receiving the limiting block is arranged on the operation handle (<NUM>), and the limiting block is rotatably arranged in the groove.