Negative pressure lithotripsy device for bladder stones

Abstract

The utility model relates to a negative pressure lithotripsy and stone removal device for bladder stones, including a handle and a sheath connected thereto, the sheath having mutually isolated video wiring channels, holmium laser fiber channels, negative pressure channels and water inlet channels, the outlet end of the video wiring channel being sealed and equipped with a camera, the holmium laser fiber channel being used for the holmium laser fiber to extend therein, and the negative pressure channel being used for stone removal; the sheath is provided with a stone baffle, the stone baffle being telescopically matched with the insertion end of the sheath to adjust the position of the stone baffle; wherein the stone baffle has a water screening hole; the outlet end of the water inlet channel is a flat arc structure to form a waterfall outlet, the water outlet of the waterfall outlet generates buoyancy for the stone; wherein the concave surface of the flat arc structure faces the stone baffle. The utility model realizes bladder stone holmium laser lithotripsy and negative pressure suction removal under full visual conditions, and can realize simultaneous stone crushing and stone removal without the need for the combined use of other operating instruments, thereby facilitating clinical operation and shortening operation time.

Description

Technical Field

[0001] The utility model belongs to the technical field of stone surgical instruments, and in particular relates to a negative pressure lithotripsy and stone removal device for bladder stones. Background Art

[0002] The incidence of bladder stones is high, and most clinical procedures use transurethral holmium laser lithotripsy under an electroresectoscopy or ureteroscope. Ordinary electroresectoscopy does not have a dedicated holmium laser fiber channel, and the fiber can only be inserted through the electroresection ring channel. The channel is prone to water leakage, which affects the surgical field of view. After lithotripsy, it is necessary to connect an irrigator and repeatedly rinse to suck out the broken stones. The stone removal process is not visible and takes a long time. Lithotripsy under a ureteroscope only has water inlet and no circulating water outlet channel, which affects the field of view. After lithotripsy, it is also necessary to use an electroresectoscopy or a disposable sheath to remove the stones.

[0003] In addition, the currently commonly used endoscopic lithotripsy for bladder stones has the following disadvantages: first, lithotripsy and stone removal need to be carried out in two stages; second, a combination of multiple instruments is required to complete it; third, the stone removal process is not visible, takes a long time, and is inefficient. Utility Model Content

[0004] Based on the above-mentioned shortcomings and deficiencies in the prior art, one of the purposes of the present invention is to at least solve one or more of the above-mentioned problems in the prior art. In other words, one of the purposes of the present invention is to provide a negative pressure lithotripsy device for bladder stones that meets one or more of the above-mentioned needs.

[0005] In order to achieve the above utility model purpose, the utility model adopts the following technical solutions:

[0006] A negative pressure lithotripsy and stone removal device for bladder stones, comprising a handle and a sheath connected thereto, the sheath having a video wiring channel, a holmium laser optical fiber channel, a negative pressure channel and a water inlet channel isolated from each other, a camera being sealed and installed at the outlet end of the video wiring channel, the holmium laser optical fiber channel being used for the holmium laser optical fiber to extend therein, and the negative pressure channel being used for stone removal;

[0007] The sheath body is provided with a stone baffle, which is telescopically matched with the probe end of the sheath body to adjust the position of the stone baffle; wherein the stone baffle has a water screening hole;

[0008] The water outlet end of the water inlet channel is a flat arc structure to form a waterfall outlet, and the water from the waterfall outlet generates buoyancy on the gravel; wherein the concave surface of the flat arc structure faces the stone baffle.

[0009] As a preferred embodiment, the video wiring channel, holmium laser fiber channel, negative pressure channel, and water inlet channel are distributed in sequence from top to bottom along the cross-section of the sheath, and the stone baffle is located above the video wiring channel.

[0010] As a preferred embodiment, the insertion end of the sheath is a sloped structure, and the ends of the video wiring channel, the holmium laser optical fiber channel, the negative pressure channel and the water inlet channel are distributed in sequence from the outside to the inside along the sloped structure.

[0011] As a preferred solution, the slope of the inclined surface structure is 12°.

[0012] As a preferred solution, the sheath body has a guide slideway, the stone baffle plate is extended with a guide rod, and the guide rod is slidably matched with the guide slideway;

[0013] When the stone baffle slides to the target position, the guide rod is fixed to the sheath body through the fixing piece.

[0014] As a preferred solution, the sheath is provided with scale lines corresponding to the slideway for determining the sliding distance of the stone baffle.

[0015] As a preferred solution, the stone baffle is a semi-arc structure, with its concave surface facing the bladder stones.

[0016] As a preferred solution, the water inlet end of the water inlet channel is connected to a perfusion pump.

[0017] As a preferred solution, a fine-tuning switch is provided at the water inlet end of the water inlet channel.

[0018] As a preferred solution, the sheath is a cylindrical structure with a diameter of 6 to 9 mm.

[0019] Compared with the prior art, the utility model has the following beneficial effects:

[0020] (1) The utility model can realize bladder stone holmium laser lithotripsy and negative pressure suction removal under full visualization, and can realize simultaneous lithotripsy and stone removal without the need for the combined use of other operating instruments, thus facilitating clinical operation and shortening operation time;

[0021] (2) The stone baffle of the utility model is attached to the stone surface to fix the stone, which is conducive to stone crushing; and the design of the water screening hole of the stone baffle is conducive to water circulation and floating of broken stones;

[0022] (3) The utility model utilizes the water from the waterfall outlet to generate buoyancy on the gravel to make the gravel float, cooperates with the stone baffle, and combines the inclined surface structure design of the probe end of the sheath body to facilitate the gravel to be sucked out of the body by the negative pressure channel;

[0023] (4) The water inlet channel and the negative pressure channel form a continuous cycle of water inlet and outlet, which effectively ensures a clear field of vision while taking away the heat generated by holmium laser lithotripsy through the circulating water in and out, thus avoiding thermal damage to the bladder mucosa.

[0024] (5) The stone baffle at the upper end of the sheath is semi-arc-shaped, and the extension length of the stone baffle can be adjusted according to the size of the stone, with good adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic structural diagram of a negative pressure lithotripsy and stone-clearing device for bladder stones according to Embodiment 1 of the present utility model;

[0026] Figure 2 It is a schematic diagram of a half-section structure of a negative pressure lithotripsy and stone-clearing device for bladder stones according to Example 1 of the utility model;

[0027] Figure 3 yes Figure 2 A magnified view of part A in FIG.

[0028] Figure 4 yes Figure 2 A magnified view of part B in FIG.

[0029] Figure 5 It is a structural schematic diagram of the extended length indicator of the stone baffle plate of Example 1 of the utility model;

[0030] Figure 6 It is a schematic diagram of the end surface structure of the probe end of the sheath body of Example 1 of the utility model;

[0031] Figure 7 It is a schematic structural diagram of a negative pressure lithotripsy and stone-clearing device for bladder stones in Example 1 of the utility model in an extended state;

[0032] Figure 8 yes Figure 7 Enlarged view of part C in . DETAILED DESCRIPTION

[0033] In order to more clearly illustrate the embodiments of the utility model, the specific implementation methods of the utility model will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0034] Embodiment 1:

[0035] like Figure 1-8 As shown, the negative pressure lithotripsy and stone removal device for bladder stones of this embodiment includes a sheath body 1, and the two ends of the sheath body 1 are respectively an insertion end I and a handheld end II. The handheld end II of the sheath body 1 is provided with a handle 2, which is convenient for holding the negative pressure lithotripsy and stone removal device, and entering the location of the bladder stone through the insertion end I to perform bladder stone surgery.

[0036] Specifically, the sheath body 1 is a long cylindrical structure with a diameter of 9 mm, and the insertion end I of the sheath body is a slope structure X, and the slope of the slope structure is 12°.

[0037] The sheath body 1 of this embodiment has mutually isolated guide slides 10, video wiring channels 11, holmium laser fiber channels 12, negative pressure channels 13, and water inlet channels 14. The guide slides 10, video wiring channels 11, holmium laser fiber channels 12, negative pressure channels 13, and water inlet channels 14 all extend along the axial direction of the sheath body and are distributed in sequence from top to bottom along the cross section of the sheath body. Based on the inclined structure of the probe end I of the sheath body, the ends of the guide slides 10, video wiring channels 11, holmium laser fiber channels 12, negative pressure channels 13, and water inlet channels 14 are distributed in sequence from outside to inside along the inclined structure, and a space for accommodating bladder stones 0 is reserved.

[0038] Among them, a stone baffle 3 is installed in the guide slide 10, and a guide rod 4 is extended from the stone baffle 3. The guide rod 4 is slidably matched with the guide slide 10, so that the stone baffle 3 can be telescopically matched with the probe end I of the sheath body, thereby adjusting the position of the stone baffle 3 to adapt to bladder stones of different sizes. Specifically, the stone baffle 3 is a semi-arc structure, and its concave surface faces the bladder stone 0, which is convenient for the stone baffle 3 to attach to the stone surface to fix the stone, avoid the water flow impacting the stone to cause shaking, and affect the crushing of the stone. Among them, the stone baffle 3 is covered with water screening holes 30, and the aperture of the water screening holes 30 is 1mm, which is conducive to water circulation, and at the same time prevents the crushed stones from floating excessively, and is easy to be sucked out by the negative pressure channel 13 under negative pressure.

[0039] In addition, the guide rod 4 is an L-shaped structure, including a guide section 41 and a fixed section 42. The guide section 41 is embedded in the guide slide 10, and the fixed section 42 protrudes from the travel groove 100 at the top of the guide slide 10. The fixed section 42 is threadedly connected with a nut member 5; when the stone baffle 3 is extended to the target position, it is fixed to the sheath body 1 by the nut member 5, thereby achieving position fixation of the guide rod 4 and the stone baffle 3.

[0040] The outer side of the sheath body 1 of this embodiment has a scale line K corresponding to the travel notch 100, and the scale line K is used to determine the extension length of the stone baffle 3. Specifically, the length of the scale line K is 1 cm.

[0041] The stone baffle 3 of this embodiment is located above the video wiring channel 11 to ensure the field of view of video acquisition.

[0042] The outlet end of the video wiring channel 11 of this embodiment is sealed with a camera 6, and the image of the bladder stone is collected by the camera 6 to realize the visual operation of the surgery.

[0043] The holmium laser fiber channel 12 of this embodiment is used for the holmium laser fiber to extend into, which is convenient for the holmium laser fiber to be placed and reduces the shaking of the fiber due to water ingress. The holmium laser fiber is combined with a camera for visual effective lithotripsy. A rubber sealing cap is provided in the holmium laser fiber channel 12 to prevent water from entering the holmium laser fiber channel.

[0044] The negative pressure channel 13 of this embodiment is connected to negative pressure suction, which can crush stones while suctioning and clearing them; the negative pressure can be adjusted to suck out the crushed stones and achieve stone cleaning.

[0045] The outlet end of the water inlet channel 14 of this embodiment is a flat arc structure to form a waterfall outlet P. The water outlet of the waterfall outlet P generates buoyancy for the gravel; wherein the concave surface of the flat arc structure faces the stone baffle 3. In addition, the water inlet channel 14 is connected to the irrigation pump, and the water inlet flow rate and pressure can be adjusted to ensure a clear field of vision. In addition, in addition to the parameter adjustment of the irrigation pump, a fine-tuning switch 7 is provided at the water inlet end of the water inlet channel 14. During the operation, the water inlet flow rate can be adjusted according to the clarity of the surgical field of vision, so as to ensure the clarity of the surgical field of vision and to generate buoyancy to suspend the gravel.

[0046] The operation process of the negative pressure lithotripsy and stone removal device for bladder stones in this embodiment is as follows:

[0047] The water inlet channel is connected to the irrigation pump, and the water inlet pressure and flow rate are adjusted to ensure a clear field of vision. The holmium laser fiber is inserted through the rubber cap of the holmium laser fiber channel, and the extended length of the stone baffle is adjusted. The stone baffle is attached to the surface of the bladder stone to fix the stone and crush it. During the lithotripsy process, the stone baffle remains extended, and the pressure and flow rate of the injected water are controlled by adjusting the irrigation pump to form buoyancy to suspend the crushed stones. The negative pressure channel is connected to the negative pressure suction to suck out the crushed stones.

[0048] Embodiment 2:

[0049] The negative pressure lithotripsy and stone removal device for bladder stones in this embodiment is different from that in embodiment 1 in that:

[0050] The fine-tuning switch at the water inlet end of the water inlet channel is omitted, and the pressure and flow of the water injection can be directly controlled by the injection pump to meet the needs of different applications;

[0051] In addition, the diameter of the sheath can also be 6mm, 7mm, 7.5mm, 8mm, 8.5mm, etc. to meet the needs of different applications;

[0052] For other structures, please refer to Example 1.

[0053] The above description is only a detailed description of the preferred embodiments and principles of the present invention. For ordinary technicians in this field, according to the ideas provided by the present invention, there will be changes in the specific implementation methods, and these changes should also be regarded as the protection scope of the present invention.

Claims

1. A negative pressure lithotripsy device for bladder stones, comprising a handle and a sheath connected thereto, characterized in that: The sheath body has a mutually isolated video wiring channel, a holmium laser optical fiber channel, a negative pressure channel and a water inlet channel. A camera is sealed and installed at the outlet end of the video wiring channel. The holmium laser optical fiber channel is used for the holmium laser optical fiber to extend into, and the negative pressure channel is used for stone removal. The sheath body is provided with a stone baffle, which is telescopically matched with the probe end of the sheath body to adjust the position of the stone baffle; wherein the stone baffle has a water screening hole; The water outlet end of the water inlet channel is a flat arc structure to form a waterfall outlet, and the water from the waterfall outlet generates buoyancy on the gravel; wherein the concave surface of the flat arc structure faces the stone baffle.

2. The negative pressure stone crushing and clearing device according to claim 1, characterized in that: The video wiring channel, holmium laser optical fiber channel, negative pressure channel, and water inlet channel are distributed in sequence from top to bottom along the cross section of the sheath, and the stone baffle is located above the video wiring channel.

3. The negative pressure stone crushing and clearing device according to claim 2, characterized in that: The insertion end of the sheath is a sloped structure, and the ends of the video wiring channel, the holmium laser optical fiber channel, the negative pressure channel and the water inlet channel are distributed in sequence from the outside to the inside along the sloped structure.

4. The negative pressure stone crushing and clearing device according to claim 3, characterized in that: The slope of the inclined surface structure is 12°.

5. The negative pressure stone crushing and clearing device according to claim 1, characterized in that: The sheath body has a guide slideway, and the stone baffle plate is extended with a guide rod, and the guide rod is slidably matched with the guide slideway; When the stone baffle slides to the target position, the guide rod is fixed to the sheath body through the fixing piece.

6. The negative pressure stone crushing and clearing device according to claim 5, characterized in that: The sheath body is provided with scale lines corresponding to the slideway for determining the sliding distance of the stone baffle.

7. The negative pressure stone crushing and clearing device according to claim 1, 5 or 6, characterized in that: The stone baffle is a semi-arc structure, and its concave surface faces the bladder stone.

8. The negative pressure stone crushing and clearing device according to claim 1, characterized in that: The water inlet end of the water inlet channel is connected to the perfusion pump.

9. The negative pressure stone crushing and clearing device according to claim 1, characterized in that: A fine-tuning switch is provided at the water inlet end of the water inlet channel.

10. The negative pressure stone crushing and clearing device according to claim 1, characterized in that: The sheath body is a cylindrical structure with a diameter of 6 to 9 mm.

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