CN216797777U - Visual puncture sheath and puncture expansion subassembly - Google Patents

Abstract

The utility model discloses a visual puncture sheath and a puncture expansion assembly, wherein the puncture sheath comprises a sheath tube, a light guide sleeve, an imaging device and an illuminating device, and the sheath tube is a hollow long tube; the light guide sleeve is arranged at the front end of the sheath tube, is made of a light guide material and performs light guide and light expansion; the imaging device is fixed in the mounting sleeve and is electrically connected with a transmission cable; the lighting device is arranged at the rear end of the imaging device and conducts light rays into the light guide sleeve through the light guide device. The puncture expansion assembly comprises the puncture sheath, an outer sheath and an expansion mechanism, wherein the outer sheath is sleeved outside the puncture sheath; the expansion mechanism is detachably sleeved outside the outer sheath and is additionally provided with an imaging device, so that images at the front end of the puncture sheath can be observed during puncture, and an operator can judge the position and the direction of the front end of the puncture sheath; the imaging device is fixed to the light guide sleeve, and meanwhile light guide illumination can be given to the imaging device, so that the brightness of the picture is improved, and a clearer image is provided.

Description

Visual puncture sheath and puncture expansion assembly

Technical Field

The utility model relates to the field of medical equipment, in particular to a visual puncture sheath and a puncture expansion assembly.

Background

Puncture sheaths are widely used in vascular puncture and percutaneous lithotomy. The blood vessel puncture uses contrast medium to carry out blood vessel development, the contrast medium is used too much and will cause injury to the human body, and the contrast medium only images in the blood vessel that circulates, but will not see any effect in the blood vessel that has the thrombus blockage, and the doctor is constantly blindly trying when looking for the correct blood vessel. Percutaneous nephrolithotomy is to establish a channel from skin to kidney at waist, insert nephroscope into kidney through the channel, and use laser, ultrasonic and other lithotripsy tools to break up kidney stone and take out it. The doctor also adopts the mode of "blind insertion" when the puncture sheath is inserted, and the operation is all based on experience, appears damaging the phenomenon of organs such as kidney easily. To avoid such an injury, it is often necessary to incorporate ultrasound imaging during dilation of the puncture. This mode of operation is very inconvenient. Therefore, the existing puncture sheath has no visual function and has defects in operation.

SUMMERY OF THE UTILITY MODEL

To overcome at least one of the above-mentioned problems of the prior art, the present invention provides a visual puncture sheath and puncture dilator assembly that allows direct visualization of the tip leading end during puncture and that is safer to operate.

The visual puncture sheath comprises a sheath tube, a light guide sleeve, an imaging device and an illuminating device, wherein the sheath tube is a hollow long tube; the light guide sleeve is arranged at the front end of the sheath tube, is made of a light guide material and performs light guide and light expansion; the imaging device is fixed in the mounting sleeve and is electrically connected with a transmission cable; the illumination device is disposed at a rear end of the imaging device.

The visual puncture sheath has at least the following beneficial effects: an imaging device is added, so that the image of the front end of the puncture sheath can be observed during puncture, and the position and the direction of the front end of the puncture sheath can be judged by an operator; the imaging device is fixed to the light guide sleeve, and meanwhile light guide illumination can be given to the imaging device, so that the brightness of the picture is improved, and a clearer image is provided.

In some embodiments of the above-mentioned visual puncture sheath, the hollow portion of the light guide sleeve has a square cross section, the imaging device has a square shape and is inscribed on the inner wall of the light guide sleeve, and the light guide sleeve fixes the imaging device by using a gap between the sheath tube and the imaging device, so that the imaging device with a larger diameter can be placed in the light guide sleeve, and an image with a larger resolution can be provided.

In some embodiments of the above-mentioned visual puncture sheath, the light shielding layer is disposed on the inner wall of the light guide sleeve, so as to prevent light from directly entering the imaging device, thereby preventing the problem of whitening of the local overexposure image.

In some embodiments of the above-described visualization puncture sheath, the forward end of at least one of the light-guiding sleeve and the sheath tube is a puncture tip, and the puncture tip projects forward, the tip facilitating insertion of the puncture sheath.

The visual puncture expansion assembly comprises the puncture sheath, an outer sheath and an expansion mechanism, wherein the outer sheath is sleeved outside the puncture sheath; the expansion mechanism comprises a plurality of expansion pipes with different pipe diameters, the expansion pipes are sequentially nested from small to large according to the pipe diameters, and the expansion mechanism is detachably sleeved outside the outer sheath.

The visual puncture dilation assembly described above has at least the following beneficial effects: the puncture sheath with the visual function establishes the channel, and the sheath and the expanding mechanism mechanically expand the punctured channel, so that the puncture process is safer, other developing devices are not needed to work in a matching manner, and the operation is simpler and more convenient.

In some embodiments of the above-described visualization puncture dilation assembly, the outer sheath is coated with a lubricious coating on its outer circumference to render the outer sheath more hydrophilic to facilitate insertion of the outer sheath over the puncture sheath and into the passage created by the puncture sheath.

In some embodiments of the above-described visual puncture dilation assembly, a gap is left between the outer sheath and the sheath, and the gap forms a first channel through which an operation instrument such as a laser fiber can be introduced for lithotripsy or a suction device can be introduced for drainage.

In some embodiments of the above-mentioned visual puncture dilation assembly, a gap is left between the inner wall of the innermost dilation tube and the outer sheath, the gap forms a second channel, the second channel can be independently introduced with an operation instrument such as a laser fiber to perform lithotripsy, or be independently introduced with a liquid suction device to perform liquid discharge, or be matched with the first channel to perform lithotripsy or stone discharge simultaneously, which is more convenient.

Drawings

In order to more clearly illustrate the technical solution in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. Obviously, the described figures are only some embodiments of the utility model, not all embodiments, and other designs and figures can be obtained by those skilled in the art without inventive effort, based on these figures:

FIG. 1 is a schematic view of a first embodiment of a puncture sheath according to the present invention;

FIG. 2 is a schematic view of a first embodiment of the puncture sheath of the present invention;

FIG. 3 is a schematic view of a first embodiment of the puncture sheath of the present invention;

FIG. 4 is a schematic structural view of a second embodiment of the puncture sheath of the present invention;

FIG. 5 is a schematic structural view of a second embodiment of the puncture sheath of the present invention;

FIG. 6 is a schematic structural view of a second embodiment of the puncture sheath of the present invention;

fig. 7 is a schematic structural view of a first embodiment of a puncture and dilation assembly of the present invention.

Detailed Description

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

It should be noted that unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly and include, for example, fixed or removable connections or integral connections; the connection can be mechanical connection or electrical connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 6, a visual puncture sheath comprises a sheath tube 1, a light guide sleeve 2, an imaging device 3 and an illuminating device, wherein the sheath tube 1 is a hollow long tube; the light guide sleeve 2 is arranged at the front end of the sheath tube 1, and the light guide sleeve 2 is made of a light guide material and performs light guide and light expansion; the imaging device 3 is fixed in the light guide sleeve 2, and the imaging device 3 is electrically connected with a transmission cable; the illumination device is disposed at the rear end of the imaging device 3.

The imaging device 3 is additionally arranged in the puncture sheath, so that the image of the front end of the puncture sheath can be observed during puncture, an operator can judge the position and the direction of the front end of the puncture sheath conveniently, the risk degree of an operation is reduced, and the safety of a patient is ensured. And utilize light guide sleeve 2 fixed image device 3, can also give image device 3 leaded light illumination simultaneously, improved the luminance of picture, provide clearer image, make things convenient for the operation puncture sheath more.

The cross section of the hollow part in the light guide sleeve 2 is square, the imaging device 3 is square and internally connected with the inner wall of the light guide sleeve 2, no gap exists between the light guide sleeve 2 and the imaging device 3, the gap between the sheath tube 1 and the imaging device 3 is utilized to fix the imaging device 3, the inner diameter of the hollow part in the light guide sleeve 2 can be increased, the imaging device 3 with larger diameter is placed in, a larger image with higher resolution can be provided, the picture is clearer, and the operation is more convenient.

Be provided with the light shield layer on the inner wall of light guide sleeve 2, can avoid light to penetrate into imaging device 3 inside directly, prevent to cause the problem that the local overexposure picture is whitish, guarantee picture quality.

The front end of at least one of the light guide sleeve 2 and the sheath tube 1 is a puncture tip, the puncture tip extends forwards, and the tip is favorable for inserting the puncture sheath. Referring to the first embodiment in fig. 1 to 3, the light guide sleeve 2 is disposed inside the front end of the sheath 1, and the end of the sheath 1 is a puncture tip, and the puncture is performed by using the tip of the sheath 1. Referring to the second embodiment in fig. 6, the light guide sleeve 2 is disposed outside the front end of the sheath 1, and the end of the light guide sleeve 2 is a puncture tip, and the puncture is performed by the end of the catheter sleeve 2.

LED lamp pearl or other illumination light sources can be chooseed for use to lighting device, and the light source setting of will throwing light on is located 3 rear ends of image device at sheath pipe 1, or sets up outside sheath pipe 1, then transmits light to leaded light sleeve 2 in with optic fibre 4. In the first embodiment, the bottom end of the light guide sleeve 2 is provided with a groove for facilitating the insertion of the optical fiber 4, which can facilitate the positioning and installation of the optical fiber 4.

Referring to fig. 7, a visual puncture expansion assembly is further provided, and comprises the puncture sheath, an outer sheath 5 and an expansion mechanism, wherein the outer sheath 5 is sleeved outside the puncture sheath, the expansion mechanism comprises a plurality of expansion pipes 6 with different pipe diameters, the expansion pipes 6 are sequentially nested from small to large according to the pipe diameters, and the expansion mechanism is detachably sleeved outside the outer sheath 5.

The outer sheath 5 is sleeved outside the puncture sheath, the tip of the puncture sheath is inserted into a body, the outer sheath 5 enters along a puncture hole established by the puncture sheath, a channel is established by the puncture sheath with a visual function, the outer sheath 5 and the expansion mechanism are inserted into the channel along the puncture sheath to expand the punctured channel, and in order to place a medical instrument with a larger size. The puncture sheath with the imaging device 2 ensures that the puncture process is safer, other developing devices such as an X-ray scanner are not needed to cooperate, the needed operation instruments are fewer, and the operation is simpler.

The outer circumferential surface of the sheath 5 is coated with a lubricating coating, so that the sheath 5 is more hydrophilic and smoother in a liquid environment, the insertion resistance of the sheath 5 is reduced, and the injury to a patient is also reduced.

A gap is reserved between the outer sheath 5 and the sheath tube, the gap forms a first channel 7, and the first channel 7 can be used for introducing operation 1 instruments such as a laser fiber and the like for carrying out stone breaking or a liquid suction device for carrying out liquid discharge. A gap is reserved between the inner wall of the innermost expanding tube 6 and the sheath 5, the gap is a second channel 8, the second channel 8 can be independently introduced into operation instruments such as a laser fiber for gravel crushing or an imbibition device for liquid discharge, and can also be matched with the first channel 7 for gravel crushing or stone discharge and other operations, so that more functions can be realized, and the operation is more convenient.

While the preferred embodiments of the present invention have been illustrated and described, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the utility model.

Claims (8)

1. A visual puncture sheath, comprising: comprises that

The sheath tube (1), the sheath tube (1) is a hollow long tube;

the light guide sleeve (2) is arranged at the front end of the sheath tube (1), and the light guide sleeve (2) is made of a light guide material and performs light guide and light expansion;

the imaging device (3) is fixed in the light guide sleeve (2), and the imaging device (3) is electrically connected with a transmission cable;

and the illuminating device is arranged at the rear end of the imaging device (3).

2. The visual puncturing sheath of claim 1, wherein: the cross section of the hollow part of the light guide sleeve (2) is square, and the imaging device (3) is square and is inscribed on the inner wall of the light guide sleeve (2).

3. The visual puncturing sheath of claim 1, wherein: and a shading layer is arranged on the inner wall of the light guide sleeve (2).

4. The visual puncturing sheath of claim 1, wherein: the front end of at least one of the light guide sleeve (2) and the sheath tube (1) is a puncture tip, and the puncture tip extends forwards.

5. A visual puncture dilation assembly, comprising: comprises that

A puncture sheath according to any one of the preceding claims;

the sheath (5), the sheath (5) is sleeved outside the puncture sheath;

the expansion mechanism comprises a plurality of expansion pipes (6) with different pipe diameters, each expansion pipe (6) is formed by sequentially nesting the pipe diameters from small to large, and the expansion mechanism is detachably sleeved outside the sheath (5).

6. The visual puncture dilation assembly of claim 5, wherein: the outer peripheral surface of the sheath (5) is coated with a lubricating coating.

7. The visual puncture dilation assembly of claim 5, wherein: a gap is reserved between the outer sheath (5) and the sheath tube (1), and the gap is a first channel (7).

8. The visual puncture dilation assembly of claim 5 or 7, wherein: a gap is reserved between the inner wall of the innermost expanding tube (6) and the outer sheath (5), and the gap is a second channel (8).

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